XPost: linux.debian.kernel
From: carnil@debian.org
Hi Stanislav,
Please do alsways include the Debian bug report address in recpients
as well. I'm forwarding your mails to the BTS:
----- Forwarded message from stanislav bozhikov
-----
From: stanislav bozhikov
Date: Thu, 19 Feb 2026 15:47:46 +0200
To: Salvatore Bonaccorso
Subject: Re: Bug#1128396: linux-image-6.12.69+deb13-amd64: Black screen on
boot with Intel Meteor Lake xe driver (PCI
ID 7d55)
Delivered-To: salvatore.bonaccorso@gmail.com
Message-ID:
On Thu, Feb 19, 2026 at 11:02 AM 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.
>
> Regards,
> Salvatore
>
[ 0.000000] Linux version 6.12.69+deb13-amd64 (debian-kernel@
ists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) 14.2.0, GNU ld
(GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC Debian 6.12.69-1
(2026-02-08)
[ 0.000000] Command line: BOOT_IMAGE=/@rootfs/boot/vmlinuz-6.
2.69+deb13-amd64 root=UUID=95cb75b3-3d9a-4a5f-aa6e-9adbc0e452da ro single
dis_ucode_ldr rootflags=subvol=@rootfs nomodeset
[ 0.000000] x86/split lock detection: #AC: crashing the kernel on kernel
split_locks and warning on user-space split_locks
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009efff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009f000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000005a54bfff] usable
[ 0.000000] BIOS-e820: [mem 0x000000005a54c000-0x0000000064615fff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000064616000-0x000000006470dfff] ACPI data
[ 0.000000] BIOS-e820: [mem 0x000000006470e000-0x00000000648a7fff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000648a8000-0x0000000069ffefff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000069fff000-0x0000000069ffffff] usable
[ 0.000000] BIOS-e820: [mem 0x000000006a000000-0x000000007e7fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000c0000000-0x00000000cfffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fe000000-0x00000000fe010fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fe410000-0x00000000fe410fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fed00000-0x00000000fed00fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fed20000-0x00000000fed7ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[continued in next message]
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
|
