Hi Salvatore, Yes sorry, I misstyped 6.12.57
I'm writing this email from v6.12.63 ! I found the root cause, when testing 6.12.57 I installed the image then the headers and the NVIDIA DKMS module was not rebuilt because the matching linux- headers package was not installed at the time the kernel image was configured. If I install the headers first and then the linux-image package, DKMS correctly builds the NVIDIA module and 6.12.63 works fine, so it doesn't look like a kernel regression after all. I don't know if I should manually run dkms autoinstall myself after a kernel update (I never had to before) or if there was a bug during the install process of this update. Best regards, Zacharie Monnet Le mardi, 13 janvier 2026, 13.17:59 h heure normale d’Europe centrale Salvatore Bonaccorso a écrit : > Hi Zacharie, > > On Mon, Jan 12, 2026 at 09:22:28PM +0100, Zacharie Monnet wrote: > > Package: src:linux > > Version: 6.12.63-1 > > Severity: normal > > X-Debbugs-Cc: none, [email protected] > > > > Boot symptoms: > > > > - Journal flooded with tens of thousands of lines: > > pcieport 0000:00:01.0: AER: Multiple Correctable error message > > received > > pcieport 0000:00:01.0: PCIe Bus Error: severity=Correctable, > > type=Physical > > > > Layer > > > > [ 0] RxErr > > > > - systemd-modules-load.service fails > > > > Working kernel: > > - linux-image-6.11.57 (from Debian 13 early builds) boots cleanly > > As you have a reange of working and non working version, and can as I > understand easily reproduce the errors quickly, can you do a bisect? > > I assume in the above this was not present in 6.**12**.57 (6.11.57 > does not exist). So this would involve compiling and testing a few > kernels: > > git clone --single-branch -b linux-6.12.y > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git cd > linux-stable > git checkout v6.12.57 > cp /boot/config-$(uname -r) .config > yes '' | make localmodconfig > make savedefconfig > mv defconfig arch/x86/configs/my_defconfig > > # test 6.12.57 to ensure this is "good" > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install the resulting .deb package and confirm the problem does not > exist. > > # test 6.12.63 to ensure this is "bad" > git checkout v6.12.63 > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install the resulting .deb package and confirm problem is present. > > With that confirmed, the bisection can start: > > git bisect start > git bisect good v6.12.57 > git bisect bad v6.12.63 > > In each bisection step git checks out a state between the oldest > known-bad and the newest known-good commit. In each step test using: > > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install, try to boot / verify if problem exists > > and if the problem is hit run: > > git bisect bad > > and if the problem doesn't trigger run: > > git bisect good > > . Please pay attention to always select the just built kernel for > booting, it won't always be the default kernel picked up by grub. > > Iterate until git announces to have identified the first bad commit. > > Then provide the output of > > git bisect log > > In the course of the bisection you might have to uninstall previous > kernels again to not exhaust the disk space in /boot. Also in the end > uninstall all self-built kernels again. > > Regards, > Salvatore
