Re: Backlight control does not work no entries /sys/class/backlight(solved)

>On Sat, 2025-09-27 at 15:21 +0000, Cliff mcDiarmid wrote:

> The interesting thing is that the Ubuntu distro I used to build LFS has the
> same firmware, drivers etc and the backlight functions!

>So if the "same" here means the exactly same file... note that Ubuntu
>has /lib/firmware/amdgpu/renoir_asd.bin.zst that the Ubuntu maintainers
>have compressed with zstd. If you want to use it you must set
>CONFIG_FW_LOADER_COMPRESS_ZSTD=y when you build the kernel.

Thanks.

Yep that did.  The massive hack of copying the Ubuntu firmware, for amdgpu,
EXACTLY to LFS worked.
And as a bonus suspend now works, which it didn't before.
So what is so different about Ubuntu's firmware?
It was compressed with zstd, but what else?

Anyway thanks again

-- 
http://lists.linuxfromscratch.org/sympa/info/blfs-support
Unsubscribe: See the above information page