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

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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

#80225 — Bug#1050852: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present

Package: firmware-misc-nonfree
Version: 20230210-5
Severity: important

Dear Maintainer,

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
- dmesg shows no relevant entry whatsoever, enabling kernel crash dumps crashes the system, but it does not reboot, also no entry in /var/crash

-- System Information:
Debian Release: 12.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-11-amd64 (SMP w/6 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

firmware-misc-nonfree depends on no packages.

firmware-misc-nonfree recommends no packages.

Versions of packages firmware-misc-nonfree suggests:
ii  initramfs-tools  0.142

-- no debconf information

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#81616 — Processed: Re: Bug#1050852: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present

Processing control commands:

> tag -1 moreinfo
Bug #1050852 [firmware-misc-nonfree] firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present
Added tag(s) moreinfo.

-- 
1050852: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050852
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#81617

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Control: tag -1 moreinfo

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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#88847 — Bug#1050852: marked as done (firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present)

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Your message dated Sat, 16 Aug 2025 03:27:24 +0200
with message-id <953e81072cad0f0f11338a7dd637a8e9cb2a5555.camel@decadent.org.uk>
and subject line Re: firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present
has caused the Debian Bug report #1050852,
regarding firmware-misc-nonfree: System crashes and reboots when i915/kbl_dmc_ver1_04.bin is present
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1050852: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050852
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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