On 23.11.24 11:12, Bastian Blank wrote:
On Sat, Nov 23, 2024 at 12:04:46AM +0200, Jaak Ristioja wrote:
I'm thinking of bisecting this. Any ideas where I could find a set of
suitable pre-built kernels to speed things up?
There is snapshot.debian.org, which stores old versions of packages. It
might miss some, but it is still a useful starting point:
https://snapshot.debian.org/package/linux/
Yes, thank you! After some testing, and it appers that the modesetting
regression was introduced somewhere between these two kernels:
linux-image-5.0.0-trunk-amd64_5.0.2-1~exp1_amd64.deb
linux-image-5.2.0-0.bpo.2-amd64_5.2.9-2~bpo10+1_amd64.deb
A quick look at the changes between debian/5.0.2-1_exp1 and
debian/5.2.9-2_bpo10+1 in [1] revealed some IOMMU related changes,
notably bug #935270 [2]. I have verified the workaround for this bug is
to use intel_iommu=igfx_off as a kernel parameter, works at least with
the following kernels:
linux-image-5.2.0-0.bpo.2-amd64_5.2.9-2~bpo10+1_amd64.deb
linux-image-6.11.7-amd64_6.11.7-1_amd64.deb
linux-image-6.12-rc6-amd64_6.12~rc6-1~exp1_amd64.deb
Jaak
[1]: https://salsa.debian.org/kernel-team/linux.git
[2]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=935270
