Public bug reported:
This is probably an upstream bug, but this looks like the first pont of
contact.
I have a TV tuner card that works with old CPUs but fails with new CPUs
that are "too fast". This is a known problem and there is a workaround
for it. The workaround is automatically applied when a "fast" CPU is
detected, but not mine.
The workaround can be forced by adding this file to /etc/modprobe.d
# /etc/modprobe.d/Hauppauge-WinTV-QuadHD.conf
# 0 means force workaround off
# 1 means auto detect troublsome CPUs
# 2 means force workaround on
options cx23885 dma_reset_workaround=2
My CPU is only a Ryzen 3 2200G. I will attach the output of cpuid,
minus the serial number.
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-19-generic 5.3.0-19.20
ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1
Uname: Linux 5.3.0-19-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: psd 1263 F.... pulseaudio
/dev/snd/controlC1: psd 1263 F.... pulseaudio
CurrentDesktop: XFCE
Date: Thu Oct 31 10:34:56 2019
InstallationDate: Installed on 2019-10-21 (9 days ago)
InstallationMedia: Xubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
IwConfig:
lo no wireless extensions.
enp12s0 no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcEnviron:
LANGUAGE=en_AU:en
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_AU.UTF-8
SHELL=/bin/bash
ProcFB: 0 nouveaudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-19-generic
root=UUID=a506aa84-ff7a-48c6-8121-fae57b937f9c ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-5.3.0-19-generic N/A
linux-backports-modules-5.3.0-19-generic N/A
linux-firmware 1.183.1
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/02/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P3.40
dmi.board.name: B450 Pro4
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP3.40:bd07/02/2019:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB450Pro4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug eoan
** Attachment added: "output of cpuid"
https://bugs.launchpad.net/bugs/1850728/+attachment/5301554/+files/cpuid.out.txt
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https://bugs.launchpad.net/bugs/1850728
Title:
CPU mis identified, need to force workaround
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