misc/175220: sound stopping: play interrupt timeout, channel dead

[Stephan Schindel]

>Number:         175220
>Category:       misc
>Synopsis:       sound stopping: play interrupt timeout, channel dead
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jan 11 20:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Stephan Schindel
>Release:        9.1
>Organization:
>Environment:
FreeBSD freebsd 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec  4 09:23:10 UTC 2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
In 9.1 there is an issue with the snd_hda driver. My sound card is an onboard chip:

hdac0: <NVIDIA MCP61 HDA Controller> mem 0xfce78000-0xfce7bfff irq 23 at device 5.0 on pci0
hdac1: <NVIDIA GT108 HDA Controller> mem 0xfcf7c000-0xfcf7ffff irq 17 at device 0.1 on pci2

Sometimes (today for example it happened the second time) the sound crashes and I have to reboot my machine to get sound back. I found this in the logs:

pcm0: chn_write(): pcm0:virtual:dsp0.vp0: play interrupt timeout, channel dead

I cannot reproduce it, it happens during watching Youtube, playing Minecraft, VLC,...

This bug is pretty annoying, because I have to reboot the machine, every single time :) I had not have this problem with 9.0 and it is a fresh install.
>How-To-Repeat:

>Fix:
Reboot the machine.

>Release-Note:
>Audit-Trail:
>Unformatted: