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

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  Bug#1000481: upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip Ben Mueller <letterbox@internix.de> - 2021-11-23 23:00 +0100
    Bug#1000481: upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip Paul Gevers <elbrus@debian.org> - 2021-12-23 21:10 +0100
      Bug#1000481: upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip Ben Mueller <letterbox@internix.de> - 2021-12-24 00:00 +0100
        Bug#1000481: upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip Paul Gevers <elbrus@debian.org> - 2021-12-24 07:40 +0100
    Processed: Re: Bug#1000481: upgrade-reports: Bullseye kernel  hangs while initialising i915 gpu driver on old intel graphic chip "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-12-24 07:40 +0100

#1355 — Bug#1000481: upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip

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.

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#1356

[Multipart message — attachments visible in raw view] — view raw

Hi Ben,

Sorry it took so long to get back to you.

On 23-11-2021 22:46, Ben Mueller wrote:
> 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:

Which package has the driver you're using? I propose we reassign this 
package to that package for further investigation.

Paul

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#1357

Hi Paul,

On 12/23/21 9:05 PM, Paul Gevers wrote:
> Sorry it took so long to get back to you.

I'm fine. I found a solution that works for me.

>> 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.
> 
> Which package has the driver you're using? I propose we reassign this
> package to that package for further investigation.

The i915 gpu driver belongs to the kernel: linux-image-amd64.
I first saw the problem with version 5.10.70-1
(linux-image-5.10.0-9-amd64). Now I'm using version 5.10.84-1
(linux-image-5.10.0-10-amd64) which also works fine using the boot
parameter "intel_iommu=off". Although I did not try this version in the
default configuration without this boot parameter.

  Ben

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#1358

[Multipart message — attachments visible in raw view] — view raw

Control: reassign -1 src:linux 5.10.70-1

Hi Ben,

On 23-12-2021 23:46, Ben Mueller wrote:
> On 12/23/21 9:05 PM, Paul Gevers wrote:
>>> 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.
>>
>> Which package has the driver you're using? I propose we reassign this
>> package to that package for further investigation.
> 
> The i915 gpu driver belongs to the kernel: linux-image-amd64.

So, I reassign the bug report to the linux source package.

> I first saw the problem with version 5.10.70-1
> (linux-image-5.10.0-9-amd64). Now I'm using version 5.10.84-1
> (linux-image-5.10.0-10-amd64) which also works fine using the boot
> parameter "intel_iommu=off". Although I did not try this version in the
> default configuration without this boot parameter.

It would help the Debian linux maintainers a lot if you could/want to 
try this with the latest version in bullseye. Just in case it got 
already fixed without going noticed inside Debian.

Paul

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#1359 — Processed: Re: Bug#1000481: upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip

Processing control commands:

> reassign -1 src:linux 5.10.70-1
Bug #1000481 [upgrade-reports] upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip
Bug reassigned from package 'upgrade-reports' to 'src:linux'.
Ignoring request to alter found versions of bug #1000481 to the same values previously set
Ignoring request to alter fixed versions of bug #1000481 to the same values previously set
Bug #1000481 [src:linux] upgrade-reports: Bullseye kernel hangs while initialising i915 gpu driver on old intel graphic chip
Marked as found in versions linux/5.10.70-1.

-- 
1000481: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1000481
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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