Bug#924913: trackpad on L480 unusable after upgrade to testing
On 3/18/19 12:20 PM, Romain Perier wrote:
> 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 ?
Dear Romainm
I upgraded the kernel and rebooted:
schloegl@debian10:~$ uname -a
Linux debian10 4.19.0-4-amd64 #1 SMP Debian 4.19.28-2 (2019-03-15)
x86_64 GNU/Linux
With this kernel the trackpoint is working, the trackpad is still not
usable.
(This improves the situation because now at least one pointer device is
available).
> - 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
root@debian10:~# cat /sys/bus/serio/devices/serio1/firmware_id
PNP: LEN2036 PNP0f13
>
> Thanks,
> Regards,
> Romain
Thank You,
Alois
>> -- 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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