Bug#1125001: linux-image-loong64: Backlight and touchpad doesn't work on laptop.

[Salvatore Bonaccorso <carnil@debian.org>]

Control: tags -1 + upstream moreinfo

Hi,

On Thu, Jan 08, 2026 at 04:22:22PM +0800, larryw3i wrote:
> Package: linux-image-loong64
> Version: 6.17.12-1
> Severity: important
> X-Debbugs-Cc: debian-loongarch@lists.debian.org
> User: debian-loongarch@lists.debian.org
> Usertags: loong64
> 
> Dear Maintainer,
> I have been using Loongson 3A6000 laptops for some time now, but the
> backlight on these laptops has always been unadjustable, and their touchpads
> are also nonfunctional. Every time I go out, I have to bring my own mouse,
> which is very inconvenient! Moreover, the screen backlight cannot be
> adjusted, and it constantly hurts my eyes.
> 
> I have learned that some distros have already got relevant patches
> (https://loongfans.cn/en/pages/guides/errata-laptop.html), and I hope you
> can fix these issues sincerely.

Those patches need to go upstream so we can include fixes, we won't
pick changes which are not going to land upsteam. For the second patch
it is 75604e9a5b60 ("pwm: loongson: Fix LOONGSON_PWM_FREQ_DEFAULT")
which landed in 6.18-rc1 and backported to 6.17.3 as well.

But I do not see the former one. What is the status of that?

Regards,
Salvatore