Bug#922666: confirmed bug report
On 2021-04-30 21:04:29, Salvatore Bonaccorso wrote:
> Control: tags -1 + moreinfo
>
> Hi Tollef, Antoine,
>
> On Wed, Sep 11, 2019 at 08:20:22PM -0400, Antoine Beaupré wrote:
>> Control: forcemerge 922666 928189
>> Control: severity 922666 important
>> Control: tags 922666 +patch +confirmed
>>
>> I also see a regression with touchpads and trackpoint on a Thinkpad E431
>> after upgrading from Debian stretch to buster. My research indicates
>> this is a kernel regression, as yet to be fixed.
>>
>> This is the result of my research, as available online at:
>>
>> https://anarc.at/services/upgrades/buster/#touchpad-trackpoint-freeze-after-sleep
>>
>> On a Thinkpad E431, the entire mouse interface (touch, trackpoint)
>> freezes after sleep. Keyboard still works but not mouse until a
>> reboot.
>>
>> There's [bug 922666][] in Debian buster, without a fix. It also says
>> it eventually recovers, which is not our experience. Possible dupe is
>> [bug 928189][].
>>
>> [bug 928189]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928189
>> [bug 922666]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922666
>>
>> There's also [bug 1791427][] in Ubuntu 18.04 that seems related, and
>> which proposes the following workarounds:
>>
>> * In gsettings: `org.gnome.desktop.peripherals.touchpad click-method disabled`
>>
>> * A .service file:
>>
>> # /etc/systemd/system/touchpad-sleep.service
>> # restore touchpad on suspend
>>
>> [Unit]
>> Description=Restore Touchpad on suspend
>> Before=sleep.target
>> StopWhenUnneeded=yes
>>
>> [Service]
>> #Type=oneshot
>> Type=idle
>> RemainAfterExit=yes
>> ExecStart=/bin/bash -c 'echo "0000:00:1f.4" > /sys/bus/pci/drivers/i801_smbus/unbind'
>> ExecStop=/bin/bash -c 'echo "0000:00:1f.4" > /sys/bus/pci/drivers/i801_smbus/bind'
>>
>> [Install]
>> WantedBy=sleep.target
>>
>> * "Maybe try xserver-xorg-input-evdev instead of xserver-xorg-input-libinput?"
>>
>> * reloading `psmouse`:
>>
>> sudo modprobe -r psmouse
>> sudo modprobe psmouse
>>
>> * "`modprobe i2c-i801` after removing it from the `blacklist.conf` seems to solve the issue."
>>
>> * whatever this is:
>>
>> # echo 1 > /sys/devices/rmi4-00/nosleep
>>
>> * "Anyone who still affected by touchpad issues after S3. Please
>> switch back to suspend-to-idle in BIOS if s2idle is
>> supported. ThinkPad Carbon 6th and Yoga 3rd do support
>> suspend-to-idle in BIOS->config->power menu."
>>
>> [bug 1791427]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791427
>>
>> There's also [bug 1442699][] in Fedora, which suggests those
>> workarounds:
>>
>> * another module reload:
>>
>> sudo rmmod i2c_hid
>> sudo modprobe i2c_hid
>>
>> * "Just updated to kernel-4.12.5-300.fc26.x86_64 in updates-testing
>> and this issue seems to have been resolved (for me)."
>>
>> * another `/proc` hack:
>>
>> echo -n "reconnect" > /sys/bus/serio/devices/serio1/drvctl
>>
>> * "The `psmouse.synaptics_intertouch=0` workaround still works for me."
>>
>> [bug 1442699]: https://bugzilla.redhat.com/show_bug.cgi?id=1442699
>>
>> Also related is this [libinput bug][] that's closed as "not our bug"
>> because they claim it's a bug in the kernel.
>>
>> [libinput bug]: https://bugs.freedesktop.org/show_bug.cgi?id=103149
>>
>> There are [two][] [patches][] on the Linux kernel which apparently fix the
>> issue, still pending approval:
>>
>> [two]: https://lkml.org/lkml/2019/2/20/700
>> [patches]: https://lkml.org/lkml/2019/2/20/701
>>
>> Possibly related: https://lkml.org/lkml/2016/8/18/134
>>
>> [5.1rc7][] shipped two fixes against the `synaptics-rmi4` module. A
>> [pull request][] has been merged in mainline with two other fixes on
>> the module./ [5.0.11][] also has fixes on the module. It's clearly a
>> regression from Debian stretch (kernel 4.9) since it was working fine
>> before.
>>
>> Possibly related, [two-finger scrolling bug in Ubuntu][], which
>> identifies [this commit][] as the source of the regression. [Upstream
>> kernel bug][], still open.
>>
>> [5.1rc7]: https://lkml.org/lkml/2019/4/28/270
>> [pull request]: https://lkml.org/lkml/2019/7/12/19
>> [5.0.11]: https://lkml.org/lkml/2019/5/2/287
>> [Upstream kernel bug]: https://bugzilla.kernel.org/show_bug.cgi?id=196719
>> [this commit]: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e839ffab028981ac77f650faf8c84f16e1719738
>> [two-finger scrolling bug in Ubuntu]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722478
>>
>> I haven't tried any of those workarounds. I hope this helps!
>
> Can you confirm if this issue is still present with a recent kernel?
e.g. buster-backports?
--
The flesh you so fancifully fry
Is not succulent, tasty or kind
It's death for no reason
And death for no reason is murder
- Morrissey
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