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pulseaudio can't detect audio cards with udev 240 #11496

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terrible-broom opened this issue Jan 19, 2019 · 5 comments
Closed

pulseaudio can't detect audio cards with udev 240 #11496

terrible-broom opened this issue Jan 19, 2019 · 5 comments
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needs-reporter-feedback ❓ There's an unanswered question, the reporter needs to answer udev

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@terrible-broom
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systemd version the issue has been seen with

240

Used distribution

Gentoo

Expected behaviour you didn't see

Pulseaudio detects audio cards using udev.

Unexpected behaviour you saw

Pulseaudio can't detect any audio cards and lists only dummy sink.
Pulseaudio log shows:
I: [pulseaudio] module-udev-detect.c: Found 0 cards.
Downgrading to udev 239 fixes this problem.

Steps to reproduce the problem
Upgrade udev from version 239 to 240 and reboot. Pulseaudio doesn't detect any audio cards and plays sound to dummy sink.
@poettering
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works fine here. what's the output of this:

udevadm info /dev/snd/controlC0

and the contents of /proc/asound/cards?

@poettering
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and "aplay -L"?

@poettering poettering added udev needs-reporter-feedback ❓ There's an unanswered question, the reporter needs to answer labels Jan 21, 2019
@fsateler
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I received a similar report in debian. It was apparently resolved with udev 240-4, which includes several post-240 fixes. Has gentoo updated its udev? I would recommend picking the udev fixes and try again with that. Not sure which ones in particular, but ee0b9e7 looks particularly relevant.

@floppym
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floppym commented Jan 24, 2019

Has gentoo updated its udev?

It would be really nice if upstream would cut a new release to avoid duplicating effort on every Linux distro.

@terrible-broom
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Fixed in sys-fs/udev-241_rc1. Thanks for help!

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@floppym @terrible-broom @fsateler @poettering