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

Package:
linux-image-loong64
Source:
linux-image-loong64
Submitter:
larryw3i
Date:
2026-01-22 11:57:04 UTC
Severity:
normal
Tags:
#1125001#5
Date:
2026-01-08 08:22:22 UTC
From:
To:
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.

The system info of my laptops:

* https://linux-hardware.org/?probe=b3d3e52355

* https://linux-hardware.org/?probe=bb12ab2e29

Regards,

larryw3i
#1125001#12
Date:
2026-01-13 12:03:18 UTC
From:
To:
Hi,

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
#1125001#19
Date:
2026-01-13 13:15:51 UTC
From:
To:
Dear Binbin Zhou,

Can you upstream the patches about `backlight and touchpad` , please?
Maybe lots of users (like me) need them.

Regards,

larryw3i
#1125001#24
Date:
2026-01-22 11:43:39 UTC
From:
To:
On Tue, 13 Jan 2026 21:15:51 +0800 larryw3i <larryw3i@yeah.net> wrote:
 > Dear Binbin Zhou,
 >
 > Can you upstream the patches about `backlight and touchpad` , please?
 > Maybe lots of users (like me) need them.
 >
 > Regards,
 >
 > larryw3i
 >
 > On 1/13/26 20:03, Salvatore Bonaccorso wrote:
 > > it is 75604e9a5b60 ("pwm: loongson: Fix LOONGSON_PWM_FREQ_DEFAULT")
 >
 >
 >