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Bug#1000481: marked as done (upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip)

Your message dated Thu, 20 Feb 2025 14:18:11 +0100 (CET)
with message-id <20250220131811.9808DBE2EE7@eldamar.lan>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #1000481,
regarding upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
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immediately.)


-- 
1000481: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1000481
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: upgrade-reports
Severity: normal
X-Debbugs-Cc: letterbox@internix.de

My previous release is: Buster
I am upgrading to: Bullseye
Archive date: ?
Upgrade date: 2021-11-21
uname -a before upgrade: (kernel: linux-image-4.19.0-18-amd64 4.19.208-1)
uname -a after upgrade: Linux rappel 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux
Method: apt

Contents of /etc/apt/sources.list:
deb http://ftp.de.debian.org/debian/ bullseye main contrib non-free
deb-src http://ftp.de.debian.org/debian/ bullseye main
deb http://security.debian.org/debian-security bullseye-security main contrib non-free
deb-src http://security.debian.org/debian-security bullseye-security main
deb http://ftp.de.debian.org/debian/ bullseye-updates main contrib non-free
deb-src http://ftp.de.debian.org/debian/ bullseye-updates main

Further Comments/Problems:
The update went fine without errors. But booting with the new kernel did
not work. The display went black shortly after loading the new kernel. I
think it was the moment when it normally changes the display resolution.
The boot process did not continue. Keyboard and mouse were not functioning.
I had to hard switch off the computer. There were no logs written to disk.
Fortunately my old kernel linux-image-4.19.0-18-amd64 was still able to
boot.

I solved the problem by inserting a boot parameter "intel_iommu=off" to
grub. With this parameter the kernel from bullseye
linux-image-5.10.0-9-amd64 was able to boot properly and the graphic was
fine on console and with x. The kernel from buster did not need this
boot parameter.

I think the problem is, that the i915 gpu driver has difficulties to
initialise my old intel graphic chip. According to lspci it is:

00:02.0 VGA compatible controller: Intel Corporation 82Q35 Express Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
        Subsystem: Fujitsu Technology Solutions 82Q35 Express Integrated Graphics Controller
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at f0200000 (32-bit, non-prefetchable) [size=512K]
        I/O ports at 1c70 [size=8]
        Memory at e0000000 (32-bit, prefetchable) [size=256M]
        Memory at f0000000 (32-bit, non-prefetchable) [size=1M]
        Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

I hope this report will be useful to other people trying to run the
bullseye kernel on old intel hardware.

--- End Message ---
--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
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