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
