[issue2067] sound/pcm: "play interrupt timeout, channel dead"

Matthias Rampke (via DragonFly issue tracker) sinknull at leaf.dragonflybsd.org
Sat May 7 15:56:10 PDT 2011

New submission from Matthias Rampke <matthias.rampke at googlemail.com>:

this fixes a "pcm0:virtual:0:dsp0.2: play interrupt timeout, channel dead" error 
and sound breaking off after a few seconds of playback I encountered on my 
Thinkpad X40. It was discussed on freebsd-current in 2004[1] but that code is no 
longer present in FreeBSD while we still have it.

The patch[2] removes a line fixing a channel timeout to 1 tick instead of the 
value calculated immediately beforehand, thus restoring the calculation.

[1] http://lists.freebsd.org/pipermail/freebsd-current/2004-

keyword: kernel
messages: 9887
nosy: matthiasr
priority: bug
status: unread
title: sound/pcm: "play interrupt timeout, channel dead"

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