On Oct 07 2024, Thorsten Leemhuis wrote: > On 06.10.24 05:46, Linux regression tracking (Thorsten Leemhuis) wrote: > > On 06.10.24 01:01, Jose Fernandez wrote: > >> I'm using Fedora 40 with the vanilla kernel built from the 6.12-RC1 [1]. There > >> is a regression that causes the touchpad to stop working on my Thinkpad Z16 Gen > >> 2 (Sensil touchpad). dmesg shows this on 6.12-rc1 when filtering by `hid`: > > > > Could you try latest git instead of rc1 if you haven't yet? E.g. the > > latest packages from your "[1]". I wonder if this is > > https://bugzilla.redhat.com/show_bug.cgi?id=2314756 > > which is fixed by a3f9a74d210bf5 ("Revert "Input: Add driver for PixArt > > PS/2 touchpad"") [v6.12-rc1-post] > > (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3f9a74d210bf5b80046a840d3e9949b5fe0a67c > > ). > > Those two are apparently different problems, as from > https://bugzilla.redhat.com/show_bug.cgi?id=2314756 > it seems that it might be not kernel regression after all, but a change > in the Fedora's .config that causes your problems. > There were 2 problems happening at the same time. There is a high chance the whole issue was because of this config change in the Fedora kernel, because of automation. However, the PixArt driver was still bogus and interfered in PS/2 capable touchpads: we couldn't have a PS/2 fallback. IIRC, in the PixArt thread, they mentioned that they had something like "if that command fails, return a touchscreen, no matter what kind of failure it was". Anyway, we should be fine in the next Fedora builds, so I guess we can close these regressions. Cheers, Benjamin
