Bug#1022806: [SOLVED UPSTREAM?] linux-image-5.10.0-19-amd64: amggpu unbootable problem persists
I experienced this problem on a machine with the following
hardware:
CPU: AMD FX-8350 (8) @ 4.000GHz
GPU: AMD ATI Radeon R7 370 / R9 270/370 OEM
After bisecting from the 5.10.149 sources, I found that the commit
responsible for this bug was
867b2b2b6802fb3995a0065fc39e0e7e20d8004d, corresponding to
upstream commit 66f99628eb24409cb8feb5061f78283c8b65f820.
This commit was reverted already on the 5.10 tree:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=357db159e965efa6a0b7b6f9efa1c34bf876db2d
Indeed, vanilla Linux 5.10.153, which contains this revert and
which is the currently latest release in the 5.10 branch, seems to
boot properly with the amdgpu driver.
The Debian package linux-image-5.10.0-19-amd64 is built from
sources corresponding to the upstream release 5.10.149, which did
NOT contain the fix. This seems to explain why many people with
AMD GPUs, myself included, were experiencing problems during boot.
Since this problem seems to have been fixed upstream, I don’t
think there is anything to do on the Debian side... except of
course packaging the next linux-image package with a Linux source
tree containing these fixes.
I’m happy to provide more information about this if anyone deems
it necessary.
Best regards.
--
Cosimo Agati
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