ALREADY APPLIED[I]: [PATCH 0/1][SRU][I/OEM-5.13/OEM-5.14] Fix cursor jump issue of Elan Trackpoint on ThinkPad AMD

Stefan Bader stefan.bader at canonical.com
Thu Dec 16 08:59:53 UTC 2021


On 02.12.21 09:35, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1936295
> 
> [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(+)
> 

This was already applied to impish:linux/master-next as part of upstream stable 
patchset 2021-12-09. I have adjusted the commit message to include the 
additional bug reference. Thanks.

-Stefan


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