| 2021-07-15 07:00:31 |
GT |
bug |
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added bug |
| 2021-07-16 19:53:55 |
Launchpad Janitor |
linux (Ubuntu): status |
New |
Confirmed |
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| 2021-07-19 11:38:24 |
Anthony Wong |
bug |
|
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added subscriber Anthony Wong |
| 2021-07-29 23:09:51 |
GT |
bug watch added |
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https://bugzilla.kernel.org/show_bug.cgi?id=209167 |
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| 2021-09-14 20:46:04 |
josedorrego |
bug |
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added subscriber josedorrego |
| 2021-09-14 22:37:03 |
MP |
bug |
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added subscriber MP |
| 2021-11-25 04:18:23 |
Eduardo Rojas RodrÃguez |
bug |
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added subscriber Eduardo Rojas RodrÃguez |
| 2021-12-02 05:16:19 |
Anthony Wong |
linux (Ubuntu): assignee |
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AaronMa (mapengyu) |
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| 2021-12-02 05:16:36 |
Anthony Wong |
nominated for series |
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Ubuntu Jammy |
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| 2021-12-02 05:16:36 |
Anthony Wong |
bug task added |
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linux (Ubuntu Jammy) |
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| 2021-12-02 05:16:36 |
Anthony Wong |
nominated for series |
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Ubuntu Trusty |
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| 2021-12-02 05:16:36 |
Anthony Wong |
bug task added |
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linux (Ubuntu Trusty) |
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| 2021-12-02 08:21:38 |
AaronMa |
bug task deleted |
linux (Ubuntu Trusty) |
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| 2021-12-02 08:21:49 |
AaronMa |
bug task added |
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linux-oem-5.13 (Ubuntu) |
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| 2021-12-02 08:22:00 |
AaronMa |
bug task added |
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linux-oem-5.14 (Ubuntu) |
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| 2021-12-02 08:22:14 |
AaronMa |
nominated for series |
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Ubuntu Impish |
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| 2021-12-02 08:22:14 |
AaronMa |
bug task added |
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linux (Ubuntu Impish) |
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| 2021-12-02 08:22:14 |
AaronMa |
bug task added |
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linux-oem-5.13 (Ubuntu Impish) |
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| 2021-12-02 08:22:14 |
AaronMa |
bug task added |
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linux-oem-5.14 (Ubuntu Impish) |
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| 2021-12-02 08:22:14 |
AaronMa |
nominated for series |
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Ubuntu Focal |
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| 2021-12-02 08:22:14 |
AaronMa |
bug task added |
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linux (Ubuntu Focal) |
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| 2021-12-02 08:22:14 |
AaronMa |
bug task added |
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linux-oem-5.13 (Ubuntu Focal) |
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| 2021-12-02 08:22:14 |
AaronMa |
bug task added |
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linux-oem-5.14 (Ubuntu Focal) |
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| 2021-12-02 08:22:25 |
AaronMa |
bug task deleted |
linux (Ubuntu Focal) |
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| 2021-12-02 08:22:32 |
AaronMa |
bug task deleted |
linux (Ubuntu Jammy) |
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| 2021-12-02 08:22:40 |
AaronMa |
bug task deleted |
linux-oem-5.13 (Ubuntu Impish) |
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| 2021-12-02 08:22:47 |
AaronMa |
bug task deleted |
linux-oem-5.13 (Ubuntu Jammy) |
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| 2021-12-02 08:22:53 |
AaronMa |
bug task deleted |
linux-oem-5.14 (Ubuntu Impish) |
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| 2021-12-02 08:22:58 |
AaronMa |
bug task deleted |
linux-oem-5.14 (Ubuntu Jammy) |
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| 2021-12-02 08:33:35 |
AaronMa |
description |
*Problem description:*
On Lenovo Thinkpad T14s, X13, A475 (and probably more models) the Elantech Trackpoint firmware is defective. The trackpoint cursor often suddenly jumps to an edge/corner, because the hardware/firmware sometimes reports wrong coordinates / loses sync. Currently, the Trackpoint is barely usable and it's impossible to productively work using it.
For a long while, Elantech has not yet put forward (nor confirmed) a firmware update. However, there is a Linux kernel patch mitigating the firmware bug. The kernel bugfix discards the wrongly reported packages by the Elantech hardware. This solves the problem for the user.
*Solution:* Please apply existing kernel patch here.
https://bugzilla.kernel.org/show_bug.cgi?id=209167 Bug entry in the Linux Kernel.org Bugzilla
https://bugzilla.kernel.org/attachment.cgi?id=295733&action=diff Diff of bugfix
*T14s and X13 are Ubuntu certified:*
The Lenovo Thinkpad T14s and X13 are Ubuntu certified, but apparently this hardware issue has slipped the Ubuntu certification process! https://ubuntu.com/certified/202006-27978 and https://ubuntu.com/certified/202006-27979
*Further information:*
https://forums.lenovo.com/t5/Fedora/T14s-AMD-Trackpoint-almost-unusable/m-p/5064952?page=1 Discussion on the bug in the Lenovo forum. E.g. see comment 18 by Lenovo employee MarkRHPearson
*My System:*
Lenovo Thinkpad T14s (AMD) 20ujs00k00
Ubuntu 21.04 and 20.04
see entries in kernel.org bugzilla for logs. |
*Problem description:*
On Lenovo Thinkpad T14s, X13, A475 (and probably more models) the Elantech Trackpoint firmware is defective. The trackpoint cursor often suddenly jumps to an edge/corner, because the hardware/firmware sometimes reports wrong coordinates / loses sync. Currently, the Trackpoint is barely usable and it's impossible to productively work using it.
For a long while, Elantech has not yet put forward (nor confirmed) a firmware update. However, there is a Linux kernel patch mitigating the firmware bug. The kernel bugfix discards the wrongly reported packages by the Elantech hardware. This solves the problem for the user.
*Solution:* Please apply existing kernel patch here.
https://bugzilla.kernel.org/show_bug.cgi?id=209167 Bug entry in the Linux Kernel.org Bugzilla
https://bugzilla.kernel.org/attachment.cgi?id=295733&action=diff Diff of bugfix
*T14s and X13 are Ubuntu certified:*
The Lenovo Thinkpad T14s and X13 are Ubuntu certified, but apparently this hardware issue has slipped the Ubuntu certification process! https://ubuntu.com/certified/202006-27978 and https://ubuntu.com/certified/202006-27979
*Further information:*
https://forums.lenovo.com/t5/Fedora/T14s-AMD-Trackpoint-almost-unusable/m-p/5064952?page=1 Discussion on the bug in the Lenovo forum. E.g. see comment 18 by Lenovo employee MarkRHPearson
*My System:*
Lenovo Thinkpad T14s (AMD) 20ujs00k00
Ubuntu 21.04 and 20.04
see entries in kernel.org bugzilla for logs.
SRU justification:
==============
[Impact]
The trackpoint cursor often suddenly jumps to an edge/corner, because
the hardware/firmware sometimes reports wrong coordinates / loses sync.
[Fix]
Ignore the buggy data reported by Elan TP firmware, make the TP usable.
[Test]
Tested on ThinkPad AMD X13 and users confirm on other platforms.
[Where problems could occur]
It's limited to specific Elan device, it may break the Elan Trackpoint.
Jammy already got this commit in Ubuntu-5.15.0-12.12
Phoenix Huang (1):
Input: elantench - fix misreporting trackpoint coordinates
drivers/input/mouse/elantech.c | 13 +++++++++++++
1 file changed, 13 insertions(+) |
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| 2021-12-02 17:29:52 |
Launchpad Janitor |
linux-oem-5.13 (Ubuntu): status |
New |
Confirmed |
|
| 2021-12-02 17:29:52 |
Launchpad Janitor |
linux-oem-5.14 (Ubuntu): status |
New |
Confirmed |
|
| 2021-12-02 17:29:52 |
Launchpad Janitor |
linux-oem-5.13 (Ubuntu Focal): status |
New |
Confirmed |
|
| 2021-12-02 17:29:52 |
Launchpad Janitor |
linux-oem-5.14 (Ubuntu Focal): status |
New |
Confirmed |
|
| 2021-12-02 17:29:52 |
Launchpad Janitor |
linux (Ubuntu Impish): status |
New |
Confirmed |
|
| 2021-12-03 09:10:21 |
Stefan Bader |
linux (Ubuntu Impish): importance |
Undecided |
Medium |
|
| 2021-12-03 09:40:27 |
Timo Aaltonen |
linux-oem-5.13 (Ubuntu Focal): status |
Confirmed |
Fix Committed |
|
| 2021-12-03 09:40:30 |
Timo Aaltonen |
linux-oem-5.14 (Ubuntu Focal): status |
Confirmed |
Fix Committed |
|
| 2021-12-03 09:40:34 |
Timo Aaltonen |
linux-oem-5.13 (Ubuntu): status |
Confirmed |
Invalid |
|
| 2021-12-03 09:40:37 |
Timo Aaltonen |
linux-oem-5.14 (Ubuntu): status |
Confirmed |
Invalid |
|
| 2021-12-05 22:36:40 |
Ubuntu Kernel Bot |
tags |
elantech kernel-bug |
elantech kernel-bug verification-needed-focal |
|
| 2021-12-05 22:39:46 |
MP |
linux-oem-5.13 (Ubuntu Focal): status |
Fix Committed |
In Progress |
|
| 2021-12-05 22:39:51 |
MP |
linux-oem-5.13 (Ubuntu Focal): status |
In Progress |
Fix Committed |
|
| 2021-12-06 05:00:36 |
AaronMa |
tags |
elantech kernel-bug verification-needed-focal |
elantech kernel-bug verification-done-focal |
|
| 2021-12-09 20:59:55 |
Launchpad Janitor |
linux-oem-5.14 (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2021-12-16 08:59:37 |
Stefan Bader |
linux (Ubuntu Impish): status |
Confirmed |
Fix Committed |
|
| 2022-01-04 04:00:14 |
Nobuto Murata |
bug |
|
|
added subscriber Nobuto Murata |
| 2022-01-06 03:22:04 |
AaronMa |
linux (Ubuntu): status |
Confirmed |
Fix Released |
|
| 2022-01-06 17:56:07 |
Ubuntu Kernel Bot |
tags |
elantech kernel-bug verification-done-focal |
elantech kernel-bug verification-done-focal verification-needed-impish |
|
| 2022-01-07 03:05:57 |
AaronMa |
tags |
elantech kernel-bug verification-done-focal verification-needed-impish |
elantech kernel-bug verification-done-focal verification-done-impish |
|
| 2022-01-10 18:15:10 |
Launchpad Janitor |
linux-oem-5.13 (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2022-01-31 12:32:51 |
Launchpad Janitor |
linux (Ubuntu Impish): status |
Fix Committed |
Fix Released |
|
| 2022-01-31 12:32:51 |
Launchpad Janitor |
cve linked |
|
2021-4090 |
|
| 2022-01-31 12:32:51 |
Launchpad Janitor |
cve linked |
|
2021-42327 |
|
