Control: found -1 linux/5.10.106-1 Control: found -1 linux/5.16.12-1~bpo11+1 On Friday, 10 June 2022 07:57:12 CEST Bogdan Veringioiu wrote: > the bug is still exists in kernel version 5.10.106 (32 bit). > > Also tried a newer kernel linux-image-5.16.0-0.bpo.4 from > bullseye-backports, with the same result. Thanks for that. Metadata updated accordingly. > Symptoms: > The monitor gets blank when the i915 changes resolution on boot. > The PC remains accessible (ssh). That seems different from what Ben reported, which may be useful info. @Ben: can you tell whether you can ssh into your device or not? > The intel_iommu=off does not work. > > Some details about the system below: > > $ dmesg | grep 915 > > [ 8.816308] i915 0000:00:02.0: vgaarb: deactivate vga console > [ 8.846333] i915 0000:00:02.0: [drm] Failed to find VBIOS tables (VBT) When putting "i915 [drm] Failed to find VBIOS tables (VBT)" into a search engine, most results were about GPU passthrough (VMs). I don't see a (direct) connection with this bug, but thought I'd share this observation in case it might give a clue to others. > [ 8.846882] i915 0000:00:02.0: vgaarb: changed VGA decodes: > olddecodes=io+mem,decodes=io+mem:owns=io+mem > [ 9.116269] i915 0000:00:02.0: [drm] Initialized overlay support. > [ 9.118527] [drm] Initialized i915 1.6.0 20200917 for 0000:00:02.0 on > minor 0 > [ 9.163178] fbcon: i915drmfb (fb0) is primary device > [ 9.203620] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device Request to both Bogdan and Ben: Can you share the full dmesg output of the 'failing' system and in case of a working workaround (like "intel_iommu=off"), also the dmesg output of that? The full dmesg output may contain clues as to why this issue occurs.
Attachment:
signature.asc
Description: This is a digitally signed message part.