Comment 0 for bug 2058830

Current version of amdgpu in linux-firmware shipped with ubuntu 22.04 (jammy) and ubuntu 23.10 (mantic) create various problems when decoding VP9 content with the iGPU on modern AMD mobile processor (rembrant and phoenix, i.e. 6xxxU/H, 7x40U/H and 7735U/H processor).

The issue has been reported and solved upstream:

https://gitlab.com/kernel-firmware/linux-firmware/-/commit/977332782302476e1c863b09b840f463d0378807

Solution dates to the end of February: https://gitlab.com/kernel-firmware/linux-firmware/-/commit/977332782302476e1c863b09b840f463d0378807

Ubuntu 24.04 already ships the updated binaries and should not be affected.

Steps to reproduce:
* on an affected system play a VP9 video with hardware decoding

Additional links:
* https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=977332782302476e1c863b09b840f463d0378807
* https://bugzilla.redhat.com/show_bug.cgi?id=2267714
* https://www.phoronix.com/news/AMDGPU-Firmware-Fixes-VP9

Workaround:
* download the amdgpu folder from upstream linux-firmware repos
* compress each file with zstd
* copy into /lib/firmware/amdgpu
* regenerate the initrd

I'm currently running ubuntu 23.10 (mantic) with binaries from upstream and the issue is solved.