Schiit devices (Wyrd and Yggdrasil) - Disappearing and reappearing rapidly in app when mounted USB to NUC

Charles_Smith · October 7, 2017, 5:25pm

I updated Roon and Fedora 26 today.
My devices attached to the core (an intel NUC) by USB to a Schiit Wyrd, come and disappear in the roon client software. It appears that the RATT Server process (mono-sgen) is getting a SIGSEGV. As soon as I turn off the Wyrd the problem goes away. Removing the Wyrd, and just plugging in the Yggdrasil directly generates the same behavior… but a Chord Mojo does not. I’d guess that the issue is likely the USB connection to the Schiit hardware that is the issue. Noting that this has been working flawlessly until today.

I’ve been running a stable configuration for months, but took both updates (because gee what could go wrong?)
@support

Any ideas?

Greg · October 7, 2017, 5:55pm

Hi Charles,

Since you typed @support in your message, they will be notified. No need to flag your post too.

Hopefully they will be along soon to help you out.

Cheers, Greg

eric · October 8, 2017, 6:02pm

Hi @Charles_Smith ----- Thank you for the report and sharing your feedback with us. The insight is very appreciated!

Moving forward, to help aide in my understanding of this behavior, may I very kindly ask you to please provide me with the following information:

An expanded description of your current setup, using this link as a guide.
When you performed the mentioned tests with the “Wyrd”, Yggdrasil", and the “Mojo” were you using the same USB cable and port on the NUC for each device?
During your troubleshooting, if you have another device available such as a laptop or desktop computer, have you tried setting it up as a “Roon remote” and mounting one of the DACs having this issue to it to verify if things are stable?

-Eric

Charles_Smith · October 9, 2017, 11:26pm

Roon version 1.3 build 262 stable 64 bit on server and client
Linux Fedora 26, up to date with all patches
SELinix disabled
Hardware is a Intel NUC NUC6i7KYK
Storage is a Samsung 960 PRO Series - 2TB PCIe NVMe card
Music is stored on a NAS connected by a managed gigabit switch
QNAP TS-421 (up to date software) dual gig ethernet conf
4 TB drives in a RAID 5 configuration
Western Digital WDC WD40EFRX-68WTON080.0 (matched)
all show good smart status in their last extended
test as well as in current short tests.
Filesystems show no errors
Netgear GS724T managed switch, it’s running a few levels back firmware and has been
stable since spring 2017
FWIW everything in this part of the network is backed by a single APC Smart UPS2200
(which is a considerably better then average ups then ‘normal’)

NUC – Netgear GS724T ==== QNAP TS-421
(with 16 gb raw storage in a single ext4 filesystem)

There was no other load on the NUC minimal load on the NAS.

The configuration runs properly with Airplay devices (a Denon receiver
and a NAIM MuSo), as well as with a macbook client running wirelessly
and roving inside the local network across multiple access points.

Over the last several months it’s been stable running most days with the
Schiit equipment.

Library is 10182 tracks

Involved equipment

NUC— USB to Wyrd (USB to) Yggdrasil
or
NUC— USB to Yggdrasil

USB Port (Back panel)
USB cable (#1 from back panel to Schiit Wyrd)
USB cable (#2 from front panel to Schiit Yddrasill or from Wyrd to Yggdrasil)
USB cable (#3 from Wyrd to Yddrasill or from front panel to Yggdrasil)

NUC --1—Wyrd --2-- Yddrasill
NUC --2—Yggdrasil
NUC f–2-- Yggdrasil
NUC f --3-- Yggdrasil
This seems to rule out a single port or cable as 3 cables and two ports fail.
Unless we have
multiple cable/port failures, which in the absence of a power issue seem unlikely.
See reference to sine-wave power supply to ensure we do not have power issues.

Then I tested another DAC[mojo] (replace the Yggdrasil in this case using the front port
and a different cable (Mojo is Micro USB not The USB A to B of the Wyrd/Ydrasill).

In this case the device(mojo) shows up normally as a dac connected to the server,
and RAATServer does not crash.

Leading to…
it’s either the Yggdrasil which developed a problem during the upgrade
(as it was working earlier in the day before upgrading the software)
or it’s the RAAT Server on Fedora.

I also tried the Yggdrasil alone connected to a Macbook pro running roon (the server still on fedora). That worked fine. The coonection there was a little different, the USB was cable #2 with a USB C to USB A dongle, and the macbook was connected to the same network switch through a wireless access point. connected via gig ethernet.

Describe The Issue

The Crash, As Noted earlier RAAT Server gets a SIGSEGV and crashes as soon as I connect
the Ydrasill. I get a list of devices in the client (indicating it’s scanning the server
hardware and sending some of it) which blinks away in a flash.

eric · October 10, 2017, 2:07pm

Hi @Charles_Smith ----- Thank you for the very detailed follow up, the feedback /insight are very appreciated!

Moving forward, I would like to grab a set of your Roon and RAATServer logs so our techs can have a closer look into the behavior you’ve reported to us. May I kindly ask you to please use the instructions found here on how to locate and send your logs to us.

-Eric

Charles_Smith · October 11, 2017, 7:00pm

https://drive.google.com/file/d/0B__qFZKi7vuKTkgxSjdHMFBaWTg/view?usp=sharing
and
https://drive.google.com/file/d/0B__qFZKi7vuKUERKdC12MnRKVFU/view?usp=sharing
Are the log files a copy of part of the journal in case that’s helpful as I though the logs looked kind of boring, please let me know when I can delete the files

Summary

This text will be hidden

eric · October 11, 2017, 9:17pm

Hi @Charles_Smith ----- Thank you for getting back to me, confirming that the logs have been received and are in our queue to be evaluated by a member of our tech team.

Once my report has been updated and passed back, I will be sure to share the team’s thoughts/findings with you in a timely manor. Your patience is very appreciated!

-Eric

Charles_Smith · October 11, 2017, 11:30pm

Eric, Thank you, the software is a delight, and I’m happy to be of assistance in stomping out whatever bug might be at the heart of this (and hopefully not some sort of user snafu).
Charlie

Charles_Smith · October 19, 2017, 2:11pm

Eric,
Thanks for your continuing efforts, I did update to 1.3 build 269 and did not see any change in behavior. The problem seems to remain outstanding.

Charlie

eric · October 23, 2017, 4:59pm

Hi @Charles_Smith ---- Thank you for the update after the latest build release went live, I appreciate the feedback! My apologies for the slow response here.

Moving forward, I have updated my report to let our techs know that the issue is still occurring on build 269. Furthermore, I have enabled diagnostics on your account as well so we can get some deeper insight into this behavior.

Once I get an update from the team on their progress, I will be sure to share their thoughts/findings asap.

-Eric

Charles_Smith · October 23, 2017, 8:35pm

I will be out for a couple!e days but will enable the failing hardware Thursday to help generate some logs.

Charles_Smith · December 26, 2017, 8:55pm

Eric, Sorry for the delay travel and other issues prevented much in the way of activity over the last two months.
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC233 Analog [ALC233 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC233 Digital [ALC233 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: USB [Schiit Audio Gen 3 USB], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: USB [Schiit Audio Gen 3 USB], device 1: USB Audio [USB Audio #1]
Subdevices: 1/1
Subdevice #0: subdevice #0

Aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
default
Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=PCH
HDA Intel PCH, ALC233 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
Front speakers
surround21:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=PCH,DEV=0
HDA Intel PCH, ALC233 Digital
IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=PCH,DEV=0
HDA Intel PCH, HDMI 0
HDMI Audio Output
hdmi:CARD=PCH,DEV=1
HDA Intel PCH, HDMI 1
HDMI Audio Output
hdmi:CARD=PCH,DEV=2
HDA Intel PCH, HDMI 2
HDMI Audio Output
hdmi:CARD=PCH,DEV=3
HDA Intel PCH, HDMI 3
HDMI Audio Output
hdmi:CARD=PCH,DEV=4
HDA Intel PCH, HDMI 4
HDMI Audio Output
sysdefault:CARD=USB
Schiit Audio Gen 3 USB, USB Audio
Default Audio Device
front:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
Front speakers
surround21:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=USB,DEV=0
Schiit Audio Gen 3 USB, USB Audio
IEC958 (S/PDIF) Digital Audio Output

Charles_Smith · December 26, 2017, 8:56pm

card1stream0
Schiit Schiit Audio Gen 3 USB at usb-0000:00:14.0-3.1, high speed : USB Audio

Playback:
Status: Stop
Interface 1
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 7 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Interface 1
Altset 2
Format: S24_3LE
Channels: 2
Endpoint: 7 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Interface 1
Altset 3
Format: S32_LE
Channels: 2
Endpoint: 7 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us

and card1stream1
Schiit Schiit Audio Gen 3 USB at usb-0000:00:14.0-3.1, high speed : USB Audio #1

Playback:
Status: Stop
Interface 1
Altset 4
Format: SPECIAL
Channels: 2
Endpoint: 5 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us

Charles_Smith · December 26, 2017, 8:57pm

last few K from dmesg

[ 0.833890] intel_pstate: Intel P-state driver initializing
[ 0.835175] intel_pstate: HWP enabled
[ 0.835303] hidraw: raw HID events driver © Jiri Kosina
[ 0.835322] usbcore: registered new interface driver usbhid
[ 0.835323] usbhid: USB HID core driver
[ 0.835380] drop_monitor: Initializing network drop monitor service
[ 0.835433] ip_tables: © 2000-2006 Netfilter Core Team
[ 0.835724] Initializing XFRM netlink socket
[ 0.835837] NET: Registered protocol family 10
[ 0.837888] Segment Routing with IPv6
[ 0.837900] mip6: Mobile IPv6
[ 0.837901] NET: Registered protocol family 17
[ 0.838733] RAS: Correctable Errors collector initialized.
[ 0.838787] microcode: sig=0x506e3, pf=0x10, revision=0xba
[ 0.838989] microcode: Microcode Update Driver: v2.2.
[ 0.838993] AVX2 version of gcm_enc/dec engaged.
[ 0.838993] AES CTR mode by8 optimization enabled
[ 0.850031] sched_clock: Marking stable (850021483, 0)->(936289399, -86267916)
[ 0.850619] registered taskstats version 1
[ 0.850627] Loading compiled-in X.509 certificates
[ 0.880170] Loaded X.509 cert ‘Fedora kernel signing key: e9d7cd7507e60ec74e18a5c59fb68b17b937ecab’
[ 0.880190] zswap: loaded using pool lzo/zbud
[ 0.883201] Key type big_key registered
[ 0.884728] Key type encrypted registered
[ 0.887535] Magic number: 13:381:804
[ 0.887773] rtc_cmos 00:03: setting system clock to 2017-12-25 21:45:06 UTC (1514238306)
[ 0.889275] Freeing unused kernel memory: 2060K
[ 0.889275] Write protecting the kernel read-only data: 14336k
[ 0.889664] Freeing unused kernel memory: 1228K
[ 0.890327] Freeing unused kernel memory: 372K
[ 0.894897] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 0.894900] rodata_test: all tests were successful
[ 0.902349] systemd[1]: systemd 234 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN default-hierarchy=hybrid)
[ 0.902471] systemd[1]: Detected architecture x86-64.
[ 0.902472] systemd[1]: Running in initial RAM disk.
[ 0.902479] systemd[1]: Set hostname to .
[ 0.930309] systemd[1]: Listening on Journal Socket.
[ 0.930365] systemd[1]: Reached target Local File Systems.
[ 0.930410] systemd[1]: Listening on udev Kernel Socket.
[ 0.930458] systemd[1]: Listening on Journal Socket (/dev/log).
[ 0.930715] systemd[1]: Created slice System Slice.
[ 0.931155] systemd[1]: Starting Create list of required static device nodes for the current kernel…
[ 0.938326] audit: type=1130 audit(1514238306.550:2): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-tmpfiles-setup comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 0.938607] audit: type=1130 audit(1514238306.550:3): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-tmpfiles-setup-dev comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 0.980765] audit: type=1130 audit(1514238306.592:4): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-journald comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 0.986562] audit: type=1130 audit(1514238306.598:5): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-vconsole-setup comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 0.986564] audit: type=1131 audit(1514238306.598:6): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-vconsole-setup comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 1.006206] audit: type=1130 audit(1514238306.618:7): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=dracut-cmdline comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 1.024215] audit: type=1130 audit(1514238306.636:8): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=dracut-pre-udev comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 1.029439] audit: type=1130 audit(1514238306.641:9): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-udevd comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 1.084077] audit: type=1130 audit(1514238306.696:10): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-udev-trigger comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 1.122273] pps_core: LinuxPPS API ver. 1 registered
[ 1.122274] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti giometti@linux.it
[ 1.124450] PTP clock support registered
[ 1.126838] sdhci: Secure Digital Host Controller Interface driver
[ 1.126839] sdhci: Copyright© Pierre Ossman
[ 1.127691] nvme nvme0: pci function 0000:3d:00.0
[ 1.128851] sdhci-pci 0000:02:00.0: SDHCI controller found [1217:8621] (rev 1)
[ 1.130786] mmc0: Unknown controller version (3). You may experience problems.
[ 1.134031] mmc0: SDHCI controller on PCI [0000:02:00.0] using ADMA
[ 1.153155] usb 2-4: new SuperSpeed USB device number 2 using xhci_hcd
[ 1.157992] e1000e: Intel® PRO/1000 Network Driver - 3.2.6-k
[ 1.157992] e1000e: Copyright© 1999 - 2015 Intel Corporation.
[ 1.158265] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 1.355816] nvme0n1: p1 p2
[ 1.402279] usb 2-4: New USB device found, idVendor=2109, idProduct=0812
[ 1.402284] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.402287] usb 2-4: Product: USB3.0 Hub
[ 1.402289] usb 2-4: Manufacturer: VIA Labs, Inc.
[ 1.404555] hub 2-4:1.0: USB hub found
[ 1.404960] hub 2-4:1.0: 4 ports detected
[ 1.417201] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
[ 1.499643] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 00:1f:c6:9c:85:aa
[ 1.499646] e1000e 0000:00:1f.6 eth0: Intel® PRO/1000 Network Connection
[ 1.499722] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: FFFFFF-0FF
[ 1.500625] [drm] Found 128MB of eDRAM
[ 1.501721] e1000e 0000:00:1f.6 eno1: renamed from eth0
[ 1.502974] [drm] Memory usable by graphics device = 4096M
[ 1.502977] [drm] Replacing VGA console driver
[ 1.505146] Console: switching to colour dummy device 80x25
[ 1.511588] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.511590] [drm] Driver supports precise vblank timestamp query.
[ 1.513783] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 1.514076] usb 1-4: new high-speed USB device number 2 using xhci_hcd
[ 1.514573] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_26.bin (v1.26)
[ 1.522250] [drm] Initialized i915 1.6.0 20170818 for 0000:00:02.0 on minor 0
[ 1.527310] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 1.528798] acpi device:0f: registered as cooling_device13
[ 1.529042] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input3
[ 1.591462] clocksource: Switched to clocksource tsc
[ 1.644198] usb 1-4: New USB device found, idVendor=2109, idProduct=2812
[ 1.644202] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.644204] usb 1-4: Product: USB2.0 Hub
[ 1.644206] usb 1-4: Manufacturer: VIA Labs, Inc.
[ 1.645068] hub 1-4:1.0: USB hub found
[ 1.645213] hub 1-4:1.0: 4 ports detected
[ 1.696334] fbcon: inteldrmfb (fb0) is primary device
[ 1.778443] Console: switching to colour frame buffer device 480x135
[ 1.821760] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 1.959031] usb 1-4.2: new full-speed USB device number 3 using xhci_hcd
[ 2.049625] usb 1-4.2: New USB device found, idVendor=1e7d, idProduct=2dbe
[ 2.049626] usb 1-4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2.049627] usb 1-4.2: Product: ROCCAT Kone Pure
[ 2.049628] usb 1-4.2: Manufacturer: ROCCAT
[ 2.055594] input: ROCCAT ROCCAT Kone Pure as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.2/1-4.2:1.0/0003:1E7D:2DBE.0001/input/input4
[ 2.107396] konepure 0003:1E7D:2DBE.0001: input,hiddev96,hidraw0: USB HID v1.00 Mouse [ROCCAT ROCCAT Kone Pure] on usb-0000:00:14.0-4.2/input0
[ 2.107590] input: ROCCAT ROCCAT Kone Pure as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.2/1-4.2:1.1/0003:1E7D:2DBE.0002/input/input5
[ 2.128111] usb 1-4.4: new full-speed USB device number 4 using xhci_hcd
[ 2.159456] konepure 0003:1E7D:2DBE.0002: input,hidraw1: USB HID v1.11 Keyboard [ROCCAT ROCCAT Kone Pure] on usb-0000:00:14.0-4.2/input1
[ 2.222453] usb 1-4.4: New USB device found, idVendor=24f0, idProduct=0141
[ 2.222458] usb 1-4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2.222461] usb 1-4.4: Product: Das Keyboard
[ 2.222464] usb 1-4.4: Manufacturer: Metadot - Das Keyboard
[ 2.224203] input: Metadot - Das Keyboard Das Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4:1.0/0003:24F0:0141.0003/input/input6
[ 2.276287] hid-generic 0003:24F0:0141.0003: input,hidraw2: USB HID v1.10 Keyboard [Metadot - Das Keyboard Das Keyboard] on usb-0000:00:14.0-4.4/input0
[ 2.277564] input: Metadot - Das Keyboard Das Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4:1.1/0003:24F0:0141.0004/input/input7
[ 2.304923] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 2.329337] hid-generic 0003:24F0:0141.0004: input,hidraw3: USB HID v1.10 Device [Metadot - Das Keyboard Das Keyboard] on usb-0000:00:14.0-4.4/input1
[ 2.644289] systemd-journald[221]: Received SIGTERM from PID 1 (systemd).
[ 2.656454] systemd: 17 output lines suppressed due to ratelimiting
[ 2.681303] SELinux: Disabled at runtime.
[ 2.681315] SELinux: Unregistering netfilter hooks
[ 2.719251] [drm] RC6 on
[ 2.814948] EXT4-fs (dm-0): re-mounted. Opts: (null)
[ 2.821525] systemd-journald[600]: Received request to flush runtime journal from PID 1
[ 2.863919] random: crng init done
[ 3.069158] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[ 3.077265] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().
[ 3.108214] mei_me 0000:00:16.0: enabling device (0000 -> 0002)
[ 3.109717] RAPL PMU: API unit is 2^-32 Joules, 5 fixed counters, 655360 ms ovfl timer
[ 3.109718] RAPL PMU: hw unit of domain pp0-core 2^-14 Joules
[ 3.109719] RAPL PMU: hw unit of domain package 2^-14 Joules
[ 3.109719] RAPL PMU: hw unit of domain dram 2^-14 Joules
[ 3.109720] RAPL PMU: hw unit of domain pp1-gpu 2^-14 Joules
[ 3.109720] RAPL PMU: hw unit of domain psys 2^-14 Joules
[ 3.129376] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
[ 3.138143] thunderbolt 0000:06:00.0: NHI initialized, starting thunderbolt
[ 3.138146] thunderbolt 0000:06:00.0: allocating TX ring 0 of size 10
[ 3.138162] thunderbolt 0000:06:00.0: allocating RX ring 0 of size 10
[ 3.138172] thunderbolt 0000:06:00.0: control channel created
[ 3.138173] thunderbolt 0000:06:00.0: control channel starting…
[ 3.138174] thunderbolt 0000:06:00.0: starting TX ring 0
[ 3.138180] thunderbolt 0000:06:00.0: enabling interrupt at register 0x38200 bit 0 (0x0 -> 0x1)
[ 3.138181] thunderbolt 0000:06:00.0: starting RX ring 0
[ 3.138187] thunderbolt 0000:06:00.0: enabling interrupt at register 0x38200 bit 12 (0x1 -> 0x1001)
[ 3.153159] Bluetooth: Core ver 2.22
[ 3.153169] NET: Registered protocol family 31
[ 3.153169] Bluetooth: HCI device and connection manager initialized
[ 3.153172] Bluetooth: HCI socket layer initialized
[ 3.153173] Bluetooth: L2CAP socket layer initialized
[ 3.153177] Bluetooth: SCO socket layer initialized
[ 3.169981] Bluetooth: HCI UART driver ver 2.3
[ 3.169982] Bluetooth: HCI UART protocol H4 registered
[ 3.169983] Bluetooth: HCI UART protocol BCSP registered
[ 3.169995] Bluetooth: HCI UART protocol LL registered
[ 3.169997] Bluetooth: HCI UART protocol ATH3K registered
[ 3.169997] Bluetooth: HCI UART protocol Three-wire (H5) registered
[ 3.170266] Bluetooth: HCI UART protocol Intel registered
[ 3.170291] Bluetooth: HCI UART protocol Broadcom registered
[ 3.170291] Bluetooth: HCI UART protocol QCA registered
[ 3.170292] Bluetooth: HCI UART protocol AG6XX registered
[ 3.170293] Bluetooth: HCI UART protocol Marvell registered
[ 3.170927] iTCO_vendor_support: vendor-support=0
[ 3.172548] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[ 3.172668] iTCO_wdt: Found a Intel PCH TCO device (Version=4, TCOBASE=0x0400)
[ 3.172759] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[ 3.200608] Adding 16486396k swap on /dev/mapper/fedora-swap. Priority:-2 extents:1 across:16486396k SSFS
[ 3.205659] Intel® Wireless WiFi driver for Linux
[ 3.205659] Copyright© 2003- 2015 Intel Corporation
[ 3.211125] iwlwifi 0000:03:00.0: loaded firmware version 34.0.1 op_mode iwlmvm
[ 3.211682] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 3.237663] intel_rapl: Found RAPL domain package
[ 3.237664] intel_rapl: Found RAPL domain core
[ 3.237665] intel_rapl: Found RAPL domain uncore
[ 3.237666] intel_rapl: Found RAPL domain dram
[ 3.257661] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC233: line_outs=1 (0x1b/0x0/0x0/0x0/0x0) type:speaker
[ 3.257663] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 3.257664] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[ 3.257664] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 3.257665] snd_hda_codec_realtek hdaudioC0D0: dig-out=0x1e/0x0
[ 3.257665] snd_hda_codec_realtek hdaudioC0D0: inputs:
[ 3.275847] iwlwifi 0000:03:00.0: Detected Intel® Dual Band Wireless AC 8260, REV=0x208
[ 3.351554] iwlwifi 0000:03:00.0: base HW address: a0:c5:89:55:0c:bc
[ 3.435498] ieee80211 phy0: Selected rate control algorithm ‘iwl-mvm-rs’
[ 3.436197] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().
[ 3.436242] thermal thermal_zone4: failed to read out thermal zone (-61)
[ 3.441617] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0
[ 3.495895] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input8
[ 3.495984] input: HDA Intel PCH Speaker as /devices/pci0000:00/0000:00:1f.3/sound/card0/input9
[ 3.496090] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
[ 3.496172] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input11
[ 3.496250] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input12
[ 3.496332] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
[ 3.496412] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
[ 3.799643] thunderbolt 0000:06:00.0: current switch config:
[ 3.799649] thunderbolt 0000:06:00.0: Switch: 8086:1576 (Revision: 4, TB Version: 2)
[ 3.799651] thunderbolt 0000:06:00.0: Max Port Number: 11
[ 3.799653] thunderbolt 0000:06:00.0: Config:
[ 3.799656] thunderbolt 0000:06:00.0: Upstream Port Number: 5 Depth: 0 Route String: 0x0 Enabled: 1, PlugEventsDelay: 254ms
[ 3.799659] thunderbolt 0000:06:00.0: unknown1: 0x0 unknown4: 0x0
[ 3.822709] thunderbolt 0000:06:00.0: 0: uid: 0x80865fb118394800
[ 3.823421] thunderbolt 0000:06:00.0: Port 0: 8086:1576 (Revision: 4, TB Version: 1, Type: Port (0x1))
[ 3.823425] thunderbolt 0000:06:00.0: Max hop id (in/out): 7/7
[ 3.823427] thunderbolt 0000:06:00.0: Max counters: 8
[ 3.823429] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.823697] thunderbolt 0000:06:00.0: Port 1: 8086:1576 (Revision: 4, TB Version: 1, Type: Port (0x1))
[ 3.823701] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
[ 3.823703] thunderbolt 0000:06:00.0: Max counters: 16
[ 3.823705] thunderbolt 0000:06:00.0: NFC Credits: 0x7800000
[ 3.823869] thunderbolt 0000:06:00.0: Port 2: 8086:1576 (Revision: 4, TB Version: 1, Type: Port (0x1))
[ 3.823871] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
[ 3.823873] thunderbolt 0000:06:00.0: Max counters: 16
[ 3.823875] thunderbolt 0000:06:00.0: NFC Credits: 0x0
[ 3.823878] thunderbolt 0000:06:00.0: 0:3: disabled by eeprom
[ 3.823880] thunderbolt 0000:06:00.0: 0:4: disabled by eeprom
[ 3.823881] thunderbolt 0000:06:00.0: 0:5: disabled by eeprom
[ 3.823931] thunderbolt 0000:06:00.0: Port 6: 8086:1576 (Revision: 4, TB Version: 1, Type: PCIe (0x100101))
[ 3.823933] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
[ 3.823935] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.823937] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.823983] thunderbolt 0000:06:00.0: Port 7: 8086:1576 (Revision: 4, TB Version: 1, Type: PCIe (0x100101))
[ 3.823985] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
[ 3.823987] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.823989] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.823991] thunderbolt 0000:06:00.0: 0:8: disabled by eeprom
[ 3.823993] thunderbolt 0000:06:00.0: 0:9: disabled by eeprom
[ 3.824048] thunderbolt 0000:06:00.0: Port 10: 8086:1576 (Revision: 4, TB Version: 1, Type: DP/HDMI (0xe0101))
[ 3.824050] thunderbolt 0000:06:00.0: Max hop id (in/out): 9/9
[ 3.824052] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.824054] thunderbolt 0000:06:00.0: NFC Credits: 0x100000c
[ 3.824056] thunderbolt 0000:06:00.0: 0:b: disabled by eeprom
[ 3.825759] thunderbolt 0000:06:00.0: current switch config:
[ 3.825765] thunderbolt 0000:06:00.0: Switch: 8086:15d3 (Revision: 6, TB Version: 2)
[ 3.825769] thunderbolt 0000:06:00.0: Max Port Number: 11
[ 3.825772] thunderbolt 0000:06:00.0: Config:
[ 3.825778] thunderbolt 0000:06:00.0: Upstream Port Number: 1 Depth: 1 Route String: 0x1 Enabled: 1, PlugEventsDelay: 254ms
[ 3.825782] thunderbolt 0000:06:00.0: unknown1: 0x0 unknown4: 0x0
[ 3.833726] thunderbolt 0000:06:00.0: 1: reading drom (length: 0x68)
[ 3.905770] EXT4-fs (nvme0n1p1): mounted filesystem with ordered data mode. Opts: (null)
[ 3.958370] thunderbolt 0000:06:00.0: 1: uid: 0x1e5a49287a4500
[ 3.958458] thunderbolt 0000:06:00.0: Port 0: 8086:15d3 (Revision: 6, TB Version: 1, Type: Port (0x1))
[ 3.958461] thunderbolt 0000:06:00.0: Max hop id (in/out): 7/7
[ 3.958463] thunderbolt 0000:06:00.0: Max counters: 8
[ 3.958466] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.958742] thunderbolt 0000:06:00.0: Port 1: 8086:15d3 (Revision: 6, TB Version: 1, Type: Port (0x1))
[ 3.958746] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
[ 3.958748] thunderbolt 0000:06:00.0: Max counters: 16
[ 3.958750] thunderbolt 0000:06:00.0: NFC Credits: 0x7800048
[ 3.958953] thunderbolt 0000:06:00.0: Port 2: 8086:15d3 (Revision: 6, TB Version: 1, Type: Port (0x1))
[ 3.958955] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
[ 3.958957] thunderbolt 0000:06:00.0: Max counters: 16
[ 3.958959] thunderbolt 0000:06:00.0: NFC Credits: 0x0
[ 3.958962] thunderbolt 0000:06:00.0: 1:3: disabled by eeprom
[ 3.958964] thunderbolt 0000:06:00.0: 1:4: disabled by eeprom
[ 3.958966] thunderbolt 0000:06:00.0: 1:5: disabled by eeprom
[ 3.959025] thunderbolt 0000:06:00.0: Port 6: 8086:15d3 (Revision: 6, TB Version: 1, Type: PCIe (0x100102))
[ 3.959028] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
[ 3.959030] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.959032] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.959090] thunderbolt 0000:06:00.0: Port 7: 8086:15d3 (Revision: 6, TB Version: 1, Type: PCIe (0x100101))
[ 3.959094] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
[ 3.959096] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.959098] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.959146] thunderbolt 0000:06:00.0: Port 8: 8086:15d3 (Revision: 6, TB Version: 1, Type: DP/HDMI (0xe0102))
[ 3.959148] thunderbolt 0000:06:00.0: Max hop id (in/out): 9/9
[ 3.959150] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.959152] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 3.959154] thunderbolt 0000:06:00.0: 1:9: disabled by eeprom
[ 3.959156] thunderbolt 0000:06:00.0: 1:a: disabled by eeprom
[ 3.959209] thunderbolt 0000:06:00.0: Port 11: 8086:15d3 (Revision: 6, TB Version: 1, Type: DP/HDMI (0xe0102))
[ 3.959211] thunderbolt 0000:06:00.0: Max hop id (in/out): 9/9
[ 3.959213] thunderbolt 0000:06:00.0: Max counters: 2
[ 3.959215] thunderbolt 0000:06:00.0: NFC Credits: 0x800000
[ 5.851349] kauditd_printk_skb: 63 callbacks suppressed
[ 5.851350] audit: type=1130 audit(1514238311.462:74): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=lvm2-pvscan@259:2 comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.863087] audit: type=1130 audit(1514238311.474:75): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=systemd-fsck@dev-mapper-fedora\x2dhome comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.881871] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)
[ 5.886577] audit: type=1130 audit(1514238311.497:76): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=dracut-shutdown comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.886849] audit: type=1130 audit(1514238311.497:77): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=nfs-config comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.886853] audit: type=1131 audit(1514238311.497:78): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=nfs-config comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.891672] audit: type=1130 audit(1514238311.502:79): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=systemd-journal-catalog-update comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.894169] audit: type=1130 audit(1514238311.505:80): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=fedora-import-state comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.897076] audit: type=1130 audit(1514238311.508:81): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=plymouth-read-write comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.897078] audit: type=1131 audit(1514238311.508:82): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=plymouth-read-write comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.903217] audit: type=1130 audit(1514238311.514:83): pid=1 uid=0 auid=4294967295 ses=4294967295 msg=‘unit=systemd-tmpfiles-setup comm=“systemd” exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success’
[ 5.925114] RPC: Registered named UNIX socket transport module.
[ 5.925115] RPC: Registered udp transport module.
[ 5.925116] RPC: Registered tcp transport module.
[ 5.925116] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 6.271908] ip6_tables: © 2000-2006 Netfilter Core Team
[ 6.321502] Ebtables v2.0 registered
[ 6.383357] IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready
[ 6.591214] IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready
[ 6.594644] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 6.695180] nf_conntrack version 0.5.0 (65536 buckets, 262144 max)
[ 6.891107] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 6.974465] Netfilter messages via NETLINK v0.30.
[ 6.977821] ip_set: protocol 6
[ 9.482302] e1000e: eno1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[ 9.482364] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready
[ 13.133286] FS-Cache: Loaded
[ 13.135731] Key type dns_resolver registered
[ 13.170366] FS-Cache: Netfs ‘cifs’ registered for caching
[ 13.170441] Key type cifs.spnego registered
[ 13.170443] Key type cifs.idmap registered
[ 15.121288] tun: Universal TUN/TAP device driver, 1.6
[ 15.121794] virbr0: port 1(virbr0-nic) entered blocking state
[ 15.121796] virbr0: port 1(virbr0-nic) entered disabled state
[ 15.121838] device virbr0-nic entered promiscuous mode
[ 15.185161] virbr0: port 1(virbr0-nic) entered blocking state
[ 15.185162] virbr0: port 1(virbr0-nic) entered listening state
[ 15.201547] virbr0: port 1(virbr0-nic) entered disabled state
[ 24.237544] fuse init (API version 7.26)
[ 24.797154] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 24.797156] Bluetooth: BNEP filters: protocol multicast
[ 24.797158] Bluetooth: BNEP socket layer initialized
[ 25.844000] rfkill: input handler disabled
[ 513.178680] usb 1-3: new high-speed USB device number 5 using xhci_hcd
[ 513.304842] usb 1-3: New USB device found, idVendor=0424, idProduct=2412
[ 513.304847] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 513.305499] hub 1-3:1.0: USB hub found
[ 513.305532] hub 1-3:1.0: 1 port detected
[ 513.600660] usb 1-3.1: new high-speed USB device number 6 using xhci_hcd
[ 513.699075] usb 1-3.1: New USB device found, idVendor=0d8c, idProduct=0316
[ 513.699080] usb 1-3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 513.699084] usb 1-3.1: Product: Schiit Audio Gen 3 USB
[ 513.699086] usb 1-3.1: Manufacturer: Schiit
[ 513.705511] input: Schiit Schiit Audio Gen 3 USB as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.1/1-3.1:1.2/0003:0D8C:0316.0005/input/input15
[ 513.705771] hid-generic 0003:0D8C:0316.0005: input,hidraw4: USB HID v1.00 Device [Schiit Schiit Audio Gen 3 USB] on usb-0000:00:14.0-3.1/input2
[ 513.766107] usbcore: registered new interface driver snd-usb-audio
[ 538.227880] usb 1-3: USB disconnect, device number 5
[ 538.227887] usb 1-3.1: USB disconnect, device number 6
[ 742.328117] usb 1-3: new high-speed USB device number 7 using xhci_hcd
[ 742.454193] usb 1-3: New USB device found, idVendor=0424, idProduct=2412
[ 742.454200] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 742.454845] hub 1-3:1.0: USB hub found
[ 742.454874] hub 1-3:1.0: 1 port detected
[ 742.743141] usb 1-3.1: new high-speed USB device number 8 using xhci_hcd
[ 742.841559] usb 1-3.1: New USB device found, idVendor=0d8c, idProduct=0316
[ 742.841564] usb 1-3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 742.841567] usb 1-3.1: Product: Schiit Audio Gen 3 USB
[ 742.841570] usb 1-3.1: Manufacturer: Schiit
[ 742.867331] input: Schiit Schiit Audio Gen 3 USB as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.1/1-3.1:1.2/0003:0D8C:0316.0006/input/input16
[ 742.867620] hid-generic 0003:0D8C:0316.0006: input,hidraw4: USB HID v1.00 Device [Schiit Schiit Audio Gen 3 USB] on usb-0000:00:14.0-3.1/input2

evand · December 26, 2017, 9:21pm

Have you updated to the latest and does problem still persist?

Charles_Smith · December 26, 2017, 10:55pm

Yes Evan, everything is up to date including a move to Fedora 27 (and all associated updates)_.
Thanks for asking.

moos · December 27, 2017, 12:18am

Hi @Charles_Smith
I had exactly the same issue, with my Yggdrasil, when I moved from a MacBook Pro to a NUC with ROCK installed.
All problems disappeared when I updated the Yggy with the new USB Gen5 (available on Schiit site).
Up to now nobody, included Roon support, could explain the reasons of such unusual behaviour. Your experience, anyway, is confirming NUC and Yggdrasil (at least with USB Gen3) have a sort of evident incopatibility
Hope it helps

eric · December 27, 2017, 3:19pm

Hi @Charles_Smith ----- Thank you for touching base with me and providing the results of troubleshooting exercise proposed in our PM conversation. The insight is very appreciated!

Moving forward, I have updated your ticket with the provided feedback and have passed it back over to our techs for review. Once the team has evaluated all the information from your update and have advised on the “next steps forward”, I will be sure to follow up ASAP.

-Eric

eric · December 29, 2017, 9:23pm

Hi @Charles_Smith ----- Again, thank you for your continued feedback and more importantly, thank you for your patience.

Moving forward, I spent some time today discussing this behavior you are experiencing with the Wyrd and Yggdrasil DACs, with our tech team and our CTO. During our meeting we tested with 3 different Schiit products in our QA lab (1 x Gen 2 board, 1 x Gen 3 boards, 2 x Gen 5 board) using ROCK, Ubuntu 16.04, and a SonicTransporter (which uses Fedora under the hood). All test runs produced no issues when the DACs were mounted directly to the units via USB.

There haven’t been changes to how Roon interacts with DAC drivers on linux for quite some time, so we are fairly confident that the trigger for this issue was not a software update on our end. It is slightly suspicious that this happened right around your upgrade to Fedora 26. That might point towards a compatibility problem introduced in the Fedora upgrade.

It would be interesting to know if your DAC works for you on another Linux distribution/machine—that has the potential to isolate the problem to just within your Fedora installation. Unfortunately, since we seem to be unable to reproduce this and establish failure as a baseline, it would not be productive for us to run that test.

Please let me know what you think and I will be glad to assist in anyway possible with the proposed test from above.

-Eric

Charles_Smith · January 12, 2018, 1:51am

Eric, I decided to see if I can duplicate with Schiit’s gen 5 USB board. I’m probably two months (maybe three) from having enough time to write a custom USB probe driver or do serious changes (like backleveling the full reinstall) and I can think of some more interesting projects … if I’m unique seeing this.

I did fall back to earlier versions of Fedora with no luck, and it is not tied to a specific port, so that makes it less likely but not impossible for this be related to the fedora version. That said I only had a few versions back available so I think my test was likely inconclusive.

Mu suspiciion is that I might (and this is the weird part) have a USB board that started to fail around that the time of the upgrade. I never turn this stuff off, and the upgrade would have been the first changes that might have resulted in temp variation in some time. I saw one other failure from a mac which I used in the interim on occasion… where I had a to power cycle to get things to work.
I replaced the board in the dac… and things work.

I have not tried reinserting the wyrd so thats the next thing to try (if the errors reoccur it will point right at the gen 3 board interface)…

I’ll try this next.