Strange Touchpad behaviour since 2 days (mar 14th) in F23
I have a strange issue on my T450s Lenovo Laptop using F23 with Gnome on X. Everything was working brilliant from day 1 with the touchpad. Since evening of 14th of march (UTC) the touchpad is behaving strangely:
- in intervals the tap to click and two-finger scroll won't work in complete firefox and other apps especially Gnome buttons, windows Max, Min etc.
- when i physically click on the whole touchpad everything is fine again for a few seconds
- then it starts again to not Tap-to-click -> 1.
i'm clueless has anybody an idea how this came?
Have you tried booting an older kernel? How does the touchpad behave there?
Hi florian, great idea didn't try yet, but found the following in syslog exactly when it starts: mycomputer.localdomain /usr/libexec/gdm-x-session[2081]: (EE) libinput bug: unexpected scroll event 0 in area state Only thing related i find searching is https://bugzilla.redhat.com/show_bug.cgi?id=1209151 But this is from a year ago and slightly different as there are also other events (two/three finger taps) registered by libinput.
i started the previous kernel: 4.4.3-300.fc23.x86_64 #1 SMP Fri Feb 26 18:45:40 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux same behavior - same error message in the log. Can i revert / downgrade libinput to an earlier version?
Yes, you can try that. Citing from
man dnf:Downgrade Command:
dnf [options] downgrade <package-installed-specs>: Downgrades the specified packages to the highest of all known lower versions if possible. When version is given and is lower than version of installed package then it downgrades to target version.So, in your case it would be
sudo dnf downgrade libinput. That would mean you go one version lower than the currently installed one (and which is most likely the one you had installed previously).