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Groups > linux.debian.kernel > #81617

Bug#1050852: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present

From Diederik de Haas <didi.debian@cknow.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1050852: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present
Date 2024-01-21 15:40 +0100
Message-ID <HYH9n-4AUN-3@gated-at.bofh.it> (permalink)
References <H8p3H-5r6r-1@gated-at.bofh.it> <H8p3H-5r6r-1@gated-at.bofh.it>
Organization Connecting Knowledge

Cross-posted to 2 groups.

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On Wednesday, 30 August 2023 10:34:03 CET hanzoh wrote:
> installing Debian 12 on an HP ProDesk 400 G5 Mini works fine, but gives the
> following warning in dmesg: 
> Failed to load DMC firmware i915/kbl_dmc_ver1_04.bin
> So when installing firmware-misc-nonfree, this firmware file becomes
> available and is loaded correctly. Unfortunately, this leads to the system
> crashing every few minutes.
> 
> I have narrowed it down to the following situation:
> - When firmware-misc-nonfree is installed, but I delete or rename
> /lib/firmware/i915/kbl_dmc_ver1_04.bin, the system no longer crashes 
> - With i915/kbl_dmc_ver1_04.bin present and a monitor being connected and
> turned on, the system no longer crashes 

Can you share (full, possibly anonymized) `dmesg` output when things work?

> Kernel: Linux 6.1.0-11-amd64 (SMP w/6 CPU threads; PREEMPT)

Can you try with a more recent kernel?
There hasn't been an update to the firmware, but 'in any case', the kernel 
shouldn't crash and it can be that a later kernel version fixed the crashing.

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Bug#1050852: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present hanzoh <hanzoh@gmail.com> - 2023-08-30 10:50 +0200
  Processed: Re: Bug#1050852: firmware-misc-nonfree: System crashes  and reboots when i915/kbl_dmc_ver1_04.bin is present "Debian Bug Tracking System" <owner@bugs.debian.org> - 2024-01-21 15:40 +0100
  Bug#1050852: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present Diederik de Haas <didi.debian@cknow.org> - 2024-01-21 15:40 +0100
  Bug#1050852: marked as done (firmware-misc-nonfree: System  crashes and reboots when i915/kbl_dmc_ver1_04.bin is present) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-08-16 03:30 +0200

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