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Bug#1111180: Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5

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  Bug#1111180: Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5 Evka <evka.evans@gmail.com> - 2025-08-15 12:20 +0200
    Bug#1111180: Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5 Uwe Kleine-König <u.kleine-koenig@baylibre.com> - 2025-08-20 10:50 +0200
    Processed: Re: Bug#1111180: Audio: Intel Cannon Lake PCH cAVS not  detected on HP EliteDesk 800 G5 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-08-20 10:50 +0200
    Bug#1111180: Closing this bug (BTS maintenance for src:linux bugs) carnil@debian.org - 2025-11-01 21:00 +0100
    Bug#1111180: marked as done (Audio: Intel Cannon Lake PCH cAVS  not detected on HP EliteDesk 800 G5) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-11-01 21:00 +0100

#88826 — Bug#1111180: Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5

Package: linux
Severity: important

Dear Maintainers,

The integrated audio device on my HP EliteDesk 800 G5 Desktop Mini is not detected by the kernel in Debian Trixie. Consequently, `aplay -l` finds no sound cards, and the system defaults to a "Dummy Output".

System information tools confirm the kernel is not attaching a driver to the hardware (`driver: N/A`).

This appears to be a kernel driver bug/regression with the `snd_sof_pci_intel_cnl` module for this specific hardware, as exhaustive troubleshooting has ruled out all common configuration and setup issues.

**System Summary:**
* **Machine:** HP EliteDesk 800 G5 Desktop Mini
* **CPU:** Intel Core i5-9500 (Coffee Lake)
* **Audio Device:** Intel Cannon Lake PCH cAVS (HP Subsystem)
* **Kernel:** 6.12.41+deb13-amd64
* **Distro:** Debian GNU/Linux 13 (trixie)
* **Desktop:** Cinnamon 6.4.10

**Hardware Details (from `lspci`):**
00:1f.3 Audio device [0403]: Intel Corporation Cannon Lake PCH cAVS [8086:a348] (rev 10)
    Subsystem: Hewlett-Packard Company Device [103c:8594]

**Summary of Diagnostic Steps Performed:**

This is not a user configuration error. The following steps have been meticulously performed and have failed to resolve the issue:

1.  **Firmware:** Confirmed the correct `firmware-sof-signed` and `firmware-intel-sound` packages are installed. This was necessary after discovering the `sof-firmware` package has been renamed in Trixie.

2.  **Driver Conflict:** Identified and resolved a conflict between the legacy `snd_hda_intel` driver and the modern `snd_sof` driver. The `snd_hda_intel` module has been successfully blacklisted.

3.  **Kernel Parameter:** Booted with the kernel parameter `snd_intel_dspcfg.dsp_driver=1` added to the kernel command line. This had no effect; the hardware was still not detected.

4.  **BIOS/UEFI:** Confirmed that the "Onboard Audio" device is "Enabled" in the system BIOS/UEFI settings (HP R21 Ver. 02.22.00).

5.  **ALSA Configuration:** Confirmed there are no custom user (`~/.asoundrc`) or system-wide (`/etc/modprobe.d/alsa-base.conf`) ALSA configuration files causing interference.

6.  **Package Manager / Mirror:** Ruled out issues with the `apt` package manager by completely rebuilding the cache and switching to a primary Debian mirror.

Despite all of the above, `aplay -l` remains empty. This strongly suggests a bug within the kernel's SOF driver stack for this specific hardware combination.

Thank you for your time and work on the Debian kernel. Please let me know if any further information or testing is required.

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#88937

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Control: tag -1 + moreinfo

Hello Evka,

On Fri, Aug 15, 2025 at 11:11:58AM +0100, Evka wrote:
> Thank you for your time and work on the Debian kernel. Please let me know if any further information or testing is required.

Can you provide a full kernel log please? Or better provide the output
of

	reportbug --template linux-image-$(uname -r)

after answering at least the first questions with yes.

Also can you please test kernels from bookworm and experimental to check
if the issue occurs there, too? Please tell if you need more guidance on
that one.

Best regards
Uwe

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#88938 — Processed: Re: Bug#1111180: Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5

Processing control commands:

> tag -1 + moreinfo
Bug #1111180 [linux] Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5
Added tag(s) moreinfo.

-- 
1111180: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1111180
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#89874 — Bug#1111180: Closing this bug (BTS maintenance for src:linux bugs)

Hi

This bug was filed for a (very) old kernel or the bug is old itself
without resolution. Maybe it was for a feature enablement which nobody
acted on. We are sorry we were not able to timely deal with this issue.
There are many open bugs for the src:linux package and thus we are
closing older bugs where it's unclear if they still occur in newer
versions and are still relevant to the reporter. For an overview see:
https://bugs.debian.org/src:linux .

If you can reproduce your issue with

- the current version in unstable/testing
- the latest kernel from backports

or, if it was a feature addition/wishlist and still consider it
relevant, then:

Please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Please try to provide as much fresh details including kernel logs where
relevant. In particular were an issue is coupled with specific hardware we
might ask you to do additional debugging on your side as the owner of the
hardware.

Regards,
Salvatore

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#89875 — Bug#1111180: marked as done (Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5)

[Multipart message — attachments visible in raw view] — view raw

Your message dated Sat, 01 Nov 2025 20:49:06 +0100 (CET)
with message-id <20251101194906.9A64ABE2EE7@eldamar.lan>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #1111180,
regarding Audio: Intel Cannon Lake PCH cAVS not detected on HP EliteDesk 800 G5
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.)


-- 
1111180: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1111180
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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