[Note: this mail contains only information for Linux kernel regression tracking. Mails like these contain '#forregzbot' in the subject to make then easy to spot and filter out. The author also tried to remove most or all individuals from the list of recipients to spare them the hassle.]
On 25.12.22 13:14, Michael Laß wrote:
CC'ing amd-gfx as this might be an issue in the amd driver.
This change causes a regression in Linux 6.1 at least on some AMD APUs. There are reports from users with Ryzen 4750U, 5800U and 5850U chips where the HDMI sound devices don't show up anymore. I'm affected by this as well.
Reverting this commit (ef6f5494) makes the HDMI audio devices show up again. I verified that this is still an issue in current Linux git (72a85e2b).
Thanks for the report. To be sure below issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression tracking bot:
#regzbot ^introduced ef6f5494faf6a37c74990689a #regzbot title alsa: hda/hdmi: HDMI sound devices don't show up anymore with some AMD APUs #regzbot ignore-activity
Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.
Am Donnerstag, dem 22.09.2022 um 10:40 +0200 schrieb Jaroslav Kysela:
Per discussion on the alsa-devel mailing list [1], the legacy PIN to PCM device mapping is obsolete nowadays. The maximum number of the simultaneously usable PCM devices is equal to the HDMI codec converters.
Remove the extra PCM devices (beyond the detected converters) and force the use of the dynamic PCM device allocation. The legacy code is removed.
I believe that all HDMI codecs have the jack sensing feature. Move the check to the codec probe function and print a warning, if a codec without this feature is detected.
The corresponding message ("jack not detectable") is not shown on the affected system.
[1] https://lore.kernel.org/alsa-devel/2f37e0b2-1e82-8c0b-2bbd-1e5038d6ecc6@pere...
Links to some reports of this issue: https://bugzilla.kernel.org/show_bug.cgi?id=216836 https://bbs.archlinux.org/viewtopic.php?pid=2075700 https://bugs.archlinux.org/task/76917 https://www.reddit.com/r/archlinux/comments/zsqq7i/hdmi_audio_is_broken_afte...
Best regards, Michael