Hi Ben,
Thanks for reaching out.
It appears that the bug has been gone with a kernel upgrade to 6.12.32+bpo-amd64 (and firmware-intel-graphics on 20250410-2~bpo12+1).
Its running on the newer kernel/firmware for several days now
without any issues. So, it was probably a kernel issue (although I
don't know why downgrading the firmware package had worked, too).
So, I guess we can close the issue.
Best
Maximilian
lspci -nnvv:
00:00.0 Host
bridge [0600]: Intel Corporation Atom Processor Z36xxx/Z37xxx
Series SoC Transaction Register [8086:0f00] (rev 11)
Subsystem:
Intel Corporation Atom Processor Z36xxx/Z37xxx Series SoC
Transaction Register [8086:0f31]
Control:
I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status:
Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency:
0
Kernel
driver in use: iosf_mbi_pci
00:02.0
VGA compatible controller [0300]: Intel Corporation Atom
Processor Z36xxx/Z37xxx Series Graphics & Display
[8086:0f31] (rev 11) (prog-if 00 [VGA con
troller])
DeviceName:
Onboard IGD
Subsystem:
Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics
& Display [8086:0f31]
Control:
I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status:
Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency:
0
Interrupt:
pin A routed to IRQ 103
Region
0: Memory at 90000000 (32-bit, non-prefetchable) [size=4M]
Region
2: Memory at 80000000 (32-bit, prefetchable) [size=256M]
Region
4: I/O ports at e080 [size=8]
Expansion
ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities:
<access denied>
Kernel
driver in use: i915
Kernel
modules: i915