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Groups > linux.debian.kernel > #63648

Bug#924913: trackpad on L480 unusable after upgrade to testing

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Hello,

On Mon, Mar 18, 2019 at 11:27:41AM +0100, Alois Schlögl wrote:
> 
> Source: linux
> Severity: normal
> 
> Dear Maintainer,
> 
>    On a Lenovo L480 laptop, I've upgraded Debian from 9 (stretch) to 10
> (testing).
>    After the upgrade, the touchpad and the trackpoint was not usable
> anymore.
> 
> 
>    This already has some bug report here,
>    https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803600
> 
>    As a workaround, one can run the command,
>        sudo sh -c 'echo -n "elantech">
> /sys/bus/serio/devices/serio1/protocol'
>    in order to use the touchpad. However, on a GUI Interface and without
>    an external mouse, it's impossible to apply this workaround
>   (switching to the terminal <CTRL>-<ALT>F1, login, and run the command
> above might work)
> 
>    I expect to be able to use the touchpad just out of the box, not needing
>    to run the above workaround
> 

Could you :

- Test with the last kernel uploaded to unstable (4.19.0-4:4.19.28) and confirm or
  not is the problem still exists ?

- According to the bug on launchpad and to the fix pushed upstream, the
  fix seems to be an hardware quirks, could you give me the output of the
  following command :
  $ /sys/bus/serio/devices/serio1/firmware_id


Thanks,
Regards,
Romain

> 
> -- System Information:
> Debian Release: buster/sid
>   APT prefers testing
>   APT policy: (990, 'testing'), (500, 'stable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 4.19.0-2-amd64 (SMP w/8 CPU cores)
> Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
> LANGUAGE=en_US:en (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled

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Bug#924913: trackpad on L480 unusable after upgrade to testing Alois Schlögl <alois.schloegl@ist.ac.at> - 2019-03-18 11:40 +0100
  Bug#924913: trackpad on L480 unusable after upgrade to testing Romain Perier <romain.perier@gmail.com> - 2019-03-18 12:30 +0100
    Bug#924913: trackpad on L480 unusable after upgrade to testing Alois Schlögl <alois.schloegl@ist.ac.at> - 2019-03-18 13:00 +0100
      Bug#924913: trackpad on L480 unusable after upgrade to testing Romain Perier <romain.perier@gmail.com> - 2019-03-18 20:00 +0100
        Bug#924913: trackpad on L480 unusable after upgrade to testing Alois Schlögl <alois.schloegl@ist.ac.at> - 2019-03-20 08:40 +0100
          Bug#924913: trackpad on L480 unusable after upgrade to testing Romain Perier <romain.perier@gmail.com> - 2019-03-26 21:10 +0100
            Bug#924913: trackpad on L480 unusable after upgrade to testing Romain Perier <romain.perier@gmail.com> - 2019-03-29 17:20 +0100
            Bug#924913: trackpad on L480 unusable after upgrade to testing Alois Schlögl <alois.schloegl@ist.ac.at> - 2019-05-29 18:10 +0200
              Bug#924913: trackpad on L480 unusable after upgrade to testing Romain Perier <romain.perier@gmail.com> - 2019-05-31 21:30 +0200
  Bug#924913: BIOS update helped Damien Miller <djm@djm.net.au> - 2019-07-22 10:10 +0200

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