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

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