NetBSD Problem Report #54005
From dholland@macaran.eecs.harvard.edu Sat Feb 23 01:29:26 2019
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Message-Id: <20190223012836.CC5626E2BA@macaran.eecs.harvard.edu>
Date: Fri, 22 Feb 2019 20:28:36 -0500 (EST)
From: dholland@eecs.harvard.edu
Reply-To: dholland@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: X server vt switching stops audio
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>Number: 54005
>Category: kern
>Synopsis: X server vt switching stops audio
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Feb 23 01:30:01 +0000 2019
>Originator: David Holland
>Release: NetBSD 8.99.27 (~20181215)
>Organization:
>Environment:
System: NetBSD macaran 8.99.27 NetBSD 8.99.27 (MACARAN) #51: Mon Dec 17 15:38:55 EST 2018 dholland@macaran:/usr/src/sys/arch/amd64/compile/MACARAN amd64
Architecture: x86_64
Machine: amd64
>Description:
Just now I was working in one X server and playing music from youtube
(in a browser) in another; switching from the youtube X server to the
other one caused audio output to stop. It did not resume when I
switched back, but generating a bell in an xterm unstuck it.
It was not immediately clear if audio data posted while it was stuck
was blocked, queued, or discarded.
>How-To-Repeat:
The problem has not repeated and is probably not readily repeatable.
>Fix:
It boggles me a bit that this is even possible, because virtual
consoles and the X server are pretty much independent of audio, so if
anyone can figure out what linkage is involved that's probably at
least the first 95%.
(Note that hw.hdafg1.multiuser was already set to 1 to make this
arrangement work at all.)
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