Bug 829526 – sys-kernel/gentoo-kernel-bin-5.10.84 and 5.10.85: Acer VX15 Touchpad (I2C) is disabled

• Status: UNCONFIRMED
• Product: Gentoo Linux

[Description Hosein 2021-12-18 08:14:34 UTC]

After the latest stable updates, for both 5.10.84 and 5.10.85 gentoo-kernel-bin, my Acer VX15's touchpad is completely disabled.
I had to switch back to 5.10.78 to restore my touchpad.
However the recent kernels are fine if I go to bios setup and change my Touchpad driver to Basic instead of Advanced which requires I2C.
Mouse cursor doesn't appear in neither X nor Wayland so I'm positive it's kernel (and driver) related.

Reproducible: Always

Steps to Reproduce:
1. Type of Touchpad is on Advanced in BIOS setup
2. Boot on either kernels 5.10.84 or 5.10.85
3. Touchpad is not working
Actual Results:  
Touchpad not working

Expected Results:  
Touchpad working

[Comment 1 Michał Górny 2021-12-18 18:33:15 UTC]

Could you lsmod on both kernels, and diff the result?

[Comment 2 Michał Górny 2021-12-18 18:33:30 UTC]

(both = old/working and new/broken)

[Comment 3 Hosein 2021-12-18 20:17:00 UTC]

Created attachment 759614 [details]
lsmod on kernel 5.10.78

[Comment 4 Hosein 2021-12-18 20:17:41 UTC]

Created attachment 759615 [details]
lsmod on kernel 5.10.85

[Comment 5 Hosein 2021-12-18 20:18:30 UTC]

Created attachment 759616 [details]
lsmod on kernel 5.10.85 but with touchpad setting on bios set to "basic"

[Comment 6 Michał Górny 2021-12-18 21:26:37 UTC]

FWICS the following modules are no longer loaded by 85:

  hid_multitouch
  joydev
  vboxdrv
  vboxnetadp
  vboxnetflt

Could you try explicitly loading them one by one via modprobe and seeing if that makes the mouse appear again?  Also dmesg from 85 "advanced" mode could be helpful.

[Comment 7 Hosein 2021-12-19 14:43:54 UTC]

Created attachment 759771 [details]
dmesg on 5.10.85 with "advanced" bios setting, touchpad not working

[Comment 8 Hosein 2021-12-19 14:45:17 UTC]

(In reply to Michał Górny from comment #6)
> FWICS the following modules are no longer loaded by 85:
> 
>   hid_multitouch
>   joydev
>   vboxdrv
>   vboxnetadp
>   vboxnetflt
> 
> Could you try explicitly loading them one by one via modprobe and seeing if
> that makes the mouse appear again?  Also dmesg from 85 "advanced" mode could
> be helpful.


It didn't enable the touchpad unfortunately (although I didn't try importing vbox and friends since I already had rebuilt virtual box modules on 5.10.84 and nothing had happened.

[Comment 9 Michał Górny 2021-12-19 18:09:35 UTC]

Oh, and dmesg from 5.10.78 would also be useful for comparison.

[Comment 10 Hosein 2021-12-19 19:25:15 UTC]

Created attachment 759805 [details]
dmesg on 5.10.78 with "advanced" bios setting, touchpad working

[Comment 11 Hosein 2021-12-25 07:49:49 UTC]

This bug, somehow, got fixed on 5.15.11-gentoo-dist

Thanks!

[Comment 12 Hosein 2021-12-25 10:09:45 UTC]

(In reply to Hosein from comment #11)
> This bug, somehow, got fixed on 5.15.11-gentoo-dist
> 
> Thanks!

Nope, oddly it just worked in the first boot, after that it still doesn't work.