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From: Romain Perier <romain.perier@gmail.com>
Newsgroups: linux.debian.bugs.dist,linux.debian.kernel
Subject: Bug#924913: trackpad on L480 unusable after upgrade to testing
Date: Mon, 18 Mar 2019 12:30:02 +0100
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Hello,

On Mon, Mar 18, 2019 at 11:27:41AM +0100, Alois Schl=F6gl wrote:
>=20
> Source: linux
> Severity: normal
>=20
> Dear Maintainer,
>=20
> =A0=A0 On a Lenovo L480 laptop, I've upgraded Debian from 9 (stretch) to =
10
> (testing).
> =A0=A0 After the upgrade, the touchpad and the trackpoint was not usable
> anymore.
>=20
>=20
> =A0=A0 This already has some bug report here,
> =A0=A0 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803600
>=20
> =A0=A0 As a workaround, one can run the command,
> =A0=A0=A0=A0=A0=A0 sudo sh -c 'echo -n "elantech">
> /sys/bus/serio/devices/serio1/protocol'
> =A0=A0 in order to use the touchpad. However, on a GUI Interface and with=
out
> =A0=A0 an external mouse, it's impossible to apply this workaround
> =A0 (switching to the terminal <CTRL>-<ALT>F1, login, and run the command
> above might work)
>=20
> =A0=A0 I expect to be able to use the touchpad just out of the box, not n=
eeding
> =A0=A0 to run the above workaround
>=20

Could you :

- Test with the last kernel uploaded to unstable (4.19.0-4:4.19.28) and con=
firm 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

>=20
> -- System Information:
> Debian Release: buster/sid
> =A0 APT prefers testing
> =A0 APT policy: (990, 'testing'), (500, 'stable')
> Architecture: amd64 (x86_64)
>=20
> 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=3Den_US.UTF-8, LC_CTYPE=3Den_US.UTF-8 (charmap=3DUTF-8),
> LANGUAGE=3Den_US:en (charmap=3DUTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled

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