On Tue, 03 Jan 2023 10:07:42 +0100, Thorsten Leemhuis wrote:
[TLDR: I'm adding this report to the list of tracked Linux kernel regressions; all text you find below is based on a few templates paragraphs you might have encountered already already in similar form. See link in footer if these mails annoy you.]
[CCing alsa maintainers]
On 02.01.23 18:29, Michael Ralston wrote:
I'm currently experiencing a regression with the audio on my Behringer U-Phoria UMC404HD.
Alsa info is at: http://alsa-project.org/db/?f=f453b8cd0248fb5fdfa38e1b770e774102f66135
I get no audio in or out for this device with kernel versions 6.1.1 and 6.1.2.
The versions I have tried that work correctly include 5.15.86 LTS, 5.19.12, and 6.0.13–16.
When I run this on 6.1.1, it will just hang until I ctrl+c: aplay -D plughw:1,0 /usr/share/sounds/alsa/Front_Center.wav
I've run strace on that command, and its output is at: https://pastebin.com/WaxJpTMe
Nothing out of the ordinary occurs when aplay is run, according to the kernel logs.
Please let me know how I can provide additional debugging information if necessary.
Please boot with snd_usb_audio.dyndbg=+p option, and get the kernel logs in both working and non-working cases.
I guess it's a regression due to the hw_params/prepare split, but need to check more details.
thanks,
Takashi