Created attachment 303972 [details] Kernel bisect result O/S: Archlinux. On any kernel release from 6.2 onwards I have found that the touchpad doesn't respond to multi finger touches properly. The pad works fine for single finger movement and single finger tap to click. If I click and hold the pad button and then use another finger to move such as for text selection, drag and drop, moving or resizing a window etc. Or if I try to use 2 finger scrolling then the mouse pointer jumps to the top or right or into the top right of the screen. All of this functionality worked as expected up to kernel 6.1.19. I have bisected the kernel and got the attached result. I have checked out kernel 6.2.6 and removed the `-funsigned-char` from the Makefile. Kernel 6.2.6 built with the modified Makefile restores the correct functionality. I believe the touchpad uses the psmouse driver so maybe the new build option has broken this driver.
(In reply to Barry from comment #0) > I believe the touchpad uses the psmouse driver so maybe the > new build option has broken this driver. Thx for the report. Could you please attach a dmesg of a relative fresh boot to check which drivers are involved?
Created attachment 303979 [details] attachment-3499-0.html Hi. If you check this link which is my report of the same bug on the arch bug tracker there is a patch attached which fixes the issue. https://bugs.archlinux.org/task/77733#comment216336 Get BlueMail for Android On 18 Mar 2023, 10:39, at 10:39, bugzilla-daemon@kernel.org wrote: >https://bugzilla.kernel.org/show_bug.cgi?id=217211 > >The Linux kernel's regression tracker (Thorsten Leemhuis) >(regressions@leemhuis.info) changed: > > What |Removed |Added >---------------------------------------------------------------------------- > CC| |regressions@leemhuis.info > >--- Comment #1 from The Linux kernel's regression tracker (Thorsten >Leemhuis) (regressions@leemhuis.info) --- >(In reply to Barry from comment #0) >> I believe the touchpad uses the psmouse driver so maybe the >> new build option has broken this driver. > >Thx for the report. Could you please attach a dmesg of a relative fresh >boot to >check which drivers are involved? > >-- >You may reply to this email to add a comment. > >You are receiving this mail because: >You reported the bug.
Created attachment 303980 [details] dmesg Output I am not the original poster of the issue but I also experiencing the same bug. Please find attached a copy of running dmesg straight after a reboot. Happy to provide more information if it helps. Thanks!
A patch that should fix this was posted here: https://lore.kernel.org/all/20230318133010.1285202-1-Jason@zx2c4.com/
After taking the latest Arch Linux updates I am no longer experiencing this issue. 6.2.13-arch1-1 Thanks again for the help.