https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194727
Bug ID: 194727
Summary: uaudio device gets disconnected, and hangs usb until
everything using /dev/mixer* is closed
Product: Base System
Version: 11.0-CURRENT
Hardware: amd64
OS: Any
Status: Needs Triage
Severity: Affects Only Me
Priority: ---
Component: usb
Assignee: freebsd-usb@FreeBSD.org
Reporter: tcber...@gmail.com
Hi
I'm using a pair of KEF X300A speakers, which get recognized by the uaudio
driver.
Sporadically get:
uaudio0: at uhub4, port 2, addr 3 (disconnected)
pcm0: unregister: channel pcm0:virtual:dsp0.vp0 busy (pid 2204)
pcm0: Waiting for sound application to exit!
pcm0: unregister: channel pcm0:virtual:dsp0.vp0 busy (pid 2204)
pcm0: Waiting for sound application to exit!
pcm0: unregister: channel pcm0:virtual:dsp0.vp0 busy (pid 2204)
pcm0: Waiting for sound application to exit!
[... -- closing/killing the concerning the application]
pcm0: Waiting for sound application to exit!
pcm0: unregister: mixer busy
pcm0: Waiting for sound application to exit!
pcm0: unregister: mixer busy
[repeat at infinitum]
The usb-stack seems to be completly hung at this point (usbconfig&friends hang)
-- until I close everything else that has /dev/mixer* open. Then the device
seems to reattach and gets usable again.
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