Bug#922666: confirmed bug report
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?
Regards,
Salvatore
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