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Piotr Czekalski
Asked: 2021-03-21 09:08:16 +0800 CST

Ubuntu 20.04 Wacom Stylus use causes immediate hang

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After the latest updates, my Lenovo Yoga X390 hangs whenever I use Wacom Stylus. So far everything was ok till the recent kernel update. Now touching the screen with a stylus causes immediate os hang (had to do a hard reset).

Removing the Wacom kernel module solves the problem temporarily, as pen and touch work, but obviously, there is no pressure sensitivity.

$ lsmod | grep wacom
wacom                 118784  0
usbhid                 57344  1 wacom
hid                   135168  5 wacom,usbhid,hid_sensor_hub,intel_ishtp_hid,hid_generic

dmesg does not show any errors.

The kernel is:

Linux n317-pc01 5.8.0-45-generic #51~20.04.1-Ubuntu SMP Tue Feb 23 13:46:31 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Any help is highly appreciated.

20.04

1 Answers

  1. The bug is caused by updating kernel 5.8.0-44 to 5.8.0-45. With kernel rolled-back to 5.8.0-44, the stylus works as expected.

    I submitted a kernel bug report for the issue: https://bugs.launchpad.net/kernel-sru-workflow/+bug/1921052

    The problem will be solved with the 5.8.0-49 kernel release. Please update to this kernel if you experience this behavior.

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