Hello Benjamin, On Tue, Jun 24, 2025 at 09:57:04PM -0600, Benjamin Martin wrote: > Please see attached log, this is with the Debian 13 (Trixie), I get the same > results as with Debian 12. With 3 monitors it locks up (just the monitors or > the graphics card, not the computer, I can still login with ssh), and with 2 > monitors it works. It does look like the the error is different in the logs. > I think it is the actual graphics card that is "locking up" because I can > turn off the monitors and turn them on again and they will still display > that same thing as before. The only way to get out of this is to reboot the > computer. > > Boot 1 is at the beginning of the log file and it is with the 3 screens > turned on. > > Boot 2 starts at Jun-24 20:19:25 and is with 2 screens > > I was really hoping that we could get this fixed before Trixie becomes > stable. As I really wanted to update my main computer to Trixie, when it > becomes stable. > > I had one guy look at this problem and he thinks that it is the "plymouth > service" that is causing this problem. He was unable to troubleshoot it any > further as he said it is almost imposible to remove plymouth from Debian and > still have a working system. > > I have tested with the latest Fedora +KDE and all 3 screens works great, no > problems whatsoever. Currently Fedora is using kernel 6.15** But I remember > checking back when Fedora was still on the same kernel version as Trixie and > it was working then as well. > > So this has me believe that it is not in the kernel but something that is > added by Debian. If you want I can send you a boot log from Fedora so that > you can compare it with Debian.
That would be great, ideally with similar kernels. Given that Fedora is
at 6.15, can you try with Debian's 6.15 kernel from experimental to
compare? Also I wouldn't be surprised if userspace also plays a role
here. So creating a monolithic kernel for your system and booting that
once with Debian and once with Fedora would probably also help.
That would be done using something like:
git clone
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
cd linux-stable
git checkout v6.15.4
cp /boot/config-$(uname -r) arch/x86/configs/my_defconfig
make my_defconfig
make localmodconfig
make localyesconfig
make -j 12
make install
Best regards
Uwe
signature.asc
Description: PGP signature
