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Bug#1128396: linux-image-6.12.69+deb13-amd64: Black screen on boot with Intel Meteor Lake xe driver (PCI ID 7d55)

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Hi Stanislav,

On Thu, Feb 19, 2026 at 10:02:20AM +0100, Salvatore Bonaccorso wrote:
> Control: tags -1 + moreinfo
> 
> On Thu, Feb 19, 2026 at 10:36:57AM +0200, stanislav wrote:
> > Package: linux-image-6.12.69+deb13-amd64
> > Version: 6.12.69-1
> > Severity: important
> > 
> > After upgrading from kernel 6.12.63+deb13-amd64 to 6.12.69+deb13-amd64,
> > the system boots to a black screen with no Wayland/KDE Plasma session starting.
> > 
> > Hardware: Intel Meteor Lake-P [Intel Arc Graphics] (PCI ID 7d55, rev 08)
> > Driver: xe (with force_probe=7d55)
> > Desktop: KDE Plasma Wayland (kwin_wayland)
> > 
> > Kernel 6.12.63+deb13-amd64 works correctly with the same configuration.
> > Kernel 6.12.69+deb13-amd64 results in a completely black screen after boot.
> > 
> > Kernel parameters:
> >   xe.enable_psr=0 xe.enable_panel_replay=0 xe.enable_fbc=0
> >   xe.enable_dc=0 xe.enable_sagv=0 xe.enable_dpt=0 xe.psr_safest_params=1
> > 
> > modprobe.d configuration:
> >   options xe force_probe=7d55
> >   blacklist i915
> > 
> > The firmware package firmware-intel-graphics 20250410-2 is installed.
> 
> Can you please provide a full kernel log with booting 6.12.69-1 with
> the black screens?
> 
> Can you please test if the problem persists with 6.12.73-1 as released
> via trixie-security?
> 
> Additionally, if the issue is still reproducible with 6.12.73-1, can
> you please bisect the changes between 6.12.63-1 and 6.12.69-1 to
> identify the problem? If you can do that will 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 v6.12.63
>     cp /boot/config-$(uname -r) .config
>     yes '' | make localmodconfig
>     make savedefconfig
>     mv defconfig arch/x86/configs/my_defconfig
> 
>     # test 6.12.63 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 6.12.69 to ensure this is "bad"
>     git checkout v6.12.69
>     make my_defconfig
>     make -j $(nproc) bindeb-pkg
>     ... install the resulting .deb package and confirm problem exists.
> 
> With that confirmed, the bisection can start:
> 
>     git bisect start
>     git bisect good v6.12.63
>     git bisect bad v6.12.69
> 
> 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, 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.

With this procedure, can you please still bisect the issue so we can
identify the breaking commit?

Regards,
Salvatore

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Bug#1128396: linux-image-6.12.69+deb13-amd64: Black screen on boot with Intel Meteor Lake xe driver (PCI ID 7d55) Salvatore Bonaccorso <carnil@debian.org> - 2026-02-19 10:10 +0100
  Bug#1128396: linux-image-6.12.69+deb13-amd64: Black screen on boot with Intel Meteor Lake xe driver (PCI ID 7d55) Salvatore Bonaccorso <carnil@debian.org> - 2026-02-25 21:30 +0100

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