Note: in bionic, it will cause login from graphic console to hang for a quite long time, most likely will failed in the end.
To reproduce:
HW: a machine with intel GPU and plugged AMD card.
A HDMI/DP monitor without audio output plugged into intel GPU.
TLP is installed with certain aggressive config.
Please refer to the tlp config is: LP: #1869999
try to "cat /proc/asound/card0/codec#2"
it will hang for long time (like 30 seconds) and kernel will output lots of log like:
[ 30.476204] snd_hda_intel 0000:00:0e.0: azx_get_response timeout, switching to polling mode: last cmd=0x20bf8100
[ 31.488128] snd_hda_intel 0000:00:0e.0: No response from codec, disabling MSI: last cmd=0x20bf8100
[ 169.630066] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -11
[ 420.027224] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -11
[ 422.051178] snd_hda_intel 0000:00:0e.0: azx_get_response timeout, switching to single_cmd mode: last cmd=0x20170503
[ 422.051383] azx_single_wait_for_response: 3 callbacks suppressed
[ 422.084088] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -5
...
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.13
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gdm 1387 F.... pulseaudio
/dev/snd/controlC1: gdm 1387 F.... pulseaudio
DistributionChannelDescriptor:
# This is the distribution channel descriptor for the OEM CDs
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-bionic-amd64-20180608-47+beaver-osp1-sanbernardino+X106
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2020-04-01 (0 days ago)
InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20180608-09:38
IwConfig:
lo no wireless extensions.
wlp0s12f0 no wireless extensions.
enp2s0 no wireless extensions.
MachineType: Dell Inc. Wyse 5070 Extended Thin Client
Package: linux-oem-osp1 5.0.0.1046.49
PackageArchitecture: amd64
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-1046-oem-osp1 root=UUID=92c21a5d-dea7-4377-b26e-c7c0edccc25b ro mem_sleep_default=deep quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.0.0-1046.51-oem-osp1 5.0.21
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.0.0-1046-oem-osp1 N/A
linux-backports-modules-5.0.0-1046-oem-osp1 N/A
linux-firmware 1.173.9
Tags: bionic
Uname: Linux 5.0.0-1046-oem-osp1 x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 01/08/2020
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.5.0
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.5.0:bd01/08/2020:svnDellInc.:pnWyse5070ExtendedThinClient:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct3:cvr:
dmi.product.family: Wyse Thin Client 5000 Series
dmi.product.name: Wyse 5070 Extended Thin Client
dmi.product.sku: 080C
dmi.sys.vendor: Dell Inc.
apport information