On 10/2/26 10:47, Alex Deucher wrote:
+ Mario
On Fri, Oct 2, 2026 at 8:52 AM Johannes Stezenbach <[email protected]> wrote:
Hi,
I have one Asrock Deskmini X600 with Ryzen 8700G.
Recently a BIOS update was released which updates
AGESA ComboAM5 from 1.2.0.3g to 1.3.0.1a.
https://www.asrock.com/nettop/AMD/DeskMini%20X600%20Series/index.asp#BIOS
The result is boot failure before any message could be printed
with my self-built kernel, which has the amdgpu driver built-in.
However, a Debian rescue image with kernel 7.2.8 could boot
(in text mode or vesa graphics mode).
Using the rescue system, I installed the Debian kernel 7.2.8,
it can boot but hangs after the amdgpu module is loaded
(no error message or crash output).
It can boot successfully with module_blacklist=amdgpu.
https://packages.debian.org/forky/linux-image-7.2.8+deb14-amd64
If you have any ideas what to try please let me know soon,
otherwise I'll have to downgrade to the previous BIOS version.
Can you get ssh access to the system? Can you boot without amdgpu and
then log in remotely and manually load amdgpu and get the dmesg
output?
Alex
Depending upon how early it hangs, anything saved into the journal from
previous boot? You can try:
# journalctl -k -b-1
Also; what is the version of your DMCUB
(/lib/firmware/amdgpu/dcn_3_1_4_dmcub.bin.zst)?
You can use this script to parse it:
https://gitlab.com/kernel-firmware/linux-firmware/-/blob/main/contrib/get_amdgpu_fw_version.py?ref_type=heads
If you upgrade to the latest upstream version does it help?
Thanks,
