Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu Groovy)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1926030
Title:
IR Remote Keys Repeat Many Times Starting with Kernel 5.8.0-49
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Groovy:
Confirmed
Bug description:
[Impact]
Patch:
* media: rc: fix timeout handling after switch to microsecond durations
* media: rc: ite-cir: fix min_timeout calculation
Were applied to Groovy with our stable update process (bug 1918516)
User reported that IR Remote key press will be repeated for multiple times
with these patches applied.
Commit 528222d853f92 ("media: rc: harmonize infrared durations to
microseconds") that needs to be fixed by these two does not exist in
5.8 kernel. The patch author Matthias Reichl also state these are for
5.10 and onward.
[Fix]
Revert these two patches for groovy.
[Test]
Test kernels for G-5.8 / F-5.8 can be found here:
https://people.canonical.com/~phlin/kernel/lp-1926030-revert-for-ir/
User Ted L confirmed that F-5.8 test kernel can fix the problem.
[Where problems could occur]
The chance to cause regression can be considered as low since the original
patch that need to be fix by these two patches does not exist in 5.8 at all.
[Original Bug Report]
I use an IR remote with the ir-keytable package. Everything was working fine
until kernel 5.8.0-49 was automatically installed by Software Updater on Ubuntu
20.04.2. When any key is pressed on the remote, the key is repeated about 500
times. The kernel is now 5.8.0-50, and the problem persists.
Other users on the MythTV mailing list are reporting the issue, and it
appears that the problem is related to changes in the following files:
drivers/media/rc/ir-mce_kbd-decoder.c
drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
drivers/media/rc/serial_ir.c
It has been reported that reverting the ir-mce_kbd-decoder.c and rc-
main.c files to the older versions fixes the problem.
/proc/version_signature > version.log:
Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18
lspci -vnvn:
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core
Processor Host Bridge/DRAM Registers [8086:590f] (rev 06)
Subsystem: ASUSTeK Computer Inc. Xeon E3-1200 v6/7th Gen Core Processor Host
Bridge/DRAM Registers [1043:8694]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: [e0] Vendor Specific Information: Len=10 <?>
Kernel driver in use: skl_uncore
ir-keytable -V:
IR keytable control version 1.18.0
lsb_release -rd:
Description: Ubuntu 20.04.2 LTS
Release: 20.04
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ted 1020 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-09-19 (217 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
IwConfig:
lo no wireless extensions.
enp3s0 no wireless extensions.
enp0s31f6 no wireless extensions.
MachineType: System manufacturer System Product Name
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-50-generic
root=UUID=529cae8e-19cd-4732-80d5-b3dca123afc6 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18
RelatedPackageVersions:
linux-restricted-modules-5.8.0-50-generic N/A
linux-backports-modules-5.8.0-50-generic N/A
linux-firmware 1.187.11
RfKill:
Tags: focal
Uname: Linux 5.8.0-50-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd mythtv plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/05/2017
dmi.bios.release: 5.12
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3405
dmi.board.asset.tag: Default string
dmi.board.name: H110T
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr3405:bd07/05/2017:br5.12:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH110T:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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