Bug 206271 - Trackpoint stops working after updating from Kernel 5.4.11 to 5.4.12
Summary: Trackpoint stops working after updating from Kernel 5.4.11 to 5.4.12
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: USB (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: Default virtual assignee for Drivers/USB
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-01-21 20:15 UTC by Johannes Goepfert
Modified: 2020-02-23 10:34 UTC (History)
1 user (show)

See Also:
Kernel Version: 5.4.13
Tree: Mainline
Regression: Yes


Attachments

Description Johannes Goepfert 2020-01-21 20:15:51 UTC
The Trackpoint from my Lenovo X1 Tablet Gen 3 stopped working after updating to Kernel version 5.4.12. The Trackpoint is recognized by "usbmon" (usbmon gives an output) and also "libinput list-devices". But there is no output for "cat /dev/input/eventX".
Comment 1 Bernd Sontheimer 2020-02-23 10:34:04 UTC
(In reply to Johannes Goepfert from comment #0)
> The Trackpoint from my Lenovo X1 Tablet Gen 3 stopped working after updating
> to Kernel version 5.4.12. The Trackpoint is recognized by "usbmon" (usbmon
> gives an output) and also "libinput list-devices". But there is no output
> for "cat /dev/input/eventX".

I can confirm the issue for this specific tablet. Further, there are patches and a dkms module here https://github.com/Lunm0us/linux-tp1gen3 that fix the trackpoint and also enable missing function keys like FnLock.

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