Bug 3735 - USB-Audio freezes after a while
Summary: USB-Audio freezes after a while
Alias: None
Product: Drivers
Classification: Unclassified
Component: USB (show other bugs)
Hardware: i386 Linux
: P2 normal
Assignee: Jaroslav Kysela
Depends on:
Blocks: USB
  Show dependency tree
Reported: 2004-11-11 15:41 UTC by asmund
Modified: 2005-08-18 21:38 UTC (History)
2 users (show)

See Also:
Kernel Version: 2.6.9
Tree: Mainline
Regression: ---


Description asmund 2004-11-11 15:41:10 UTC
Distribution:   Debian unstable 
Hardware Environment:    
  AMD K7 800, 512MB RAM, Creative SoundBlaster, external (USB) 
Software Environment: 
  KDE 3.3.1, arts or gstreamer 
Problem Description: 
The sound card stops working after a while (half an hour or so). The card has a 
blue light on top, which lights up when the usb-audio system starts and flashes 
when there is sound output. After the approx. half an hour, the light goes 
dark, sound stops and it is impossible to restart. 
Removing and reattaching the usb connection sometimes fixes the problem, almost 
always the light comes on again. 
When shutting down, the system hangs  (black window, X cursor active). 
Unplugging the usb cable makes the system shut down.  Strange :-) 
(I have also observed full lockup of my keyboard, but not the mouse, when I 
unplugg and reconnect the usb cable. Neither keyboard or mouse are connected 
through USB. This cannot be consistently reproduced, however.) 
Steps to reproduce: 
From fresh startup, start X and KDE, log on, start amarok (or other player), 
play some music, observe sound system freeze.
Comment 1 asmund 2004-11-19 08:53:37 UTC
The following shows up in my syslog: 
kernel: uhci_hcd 0000:00:07.2: host system error, PCI problems? 
kernel: uhci_hcd 0000:00:07.2: host controller halted, very bad! 
Perhaps this is an USB issue? 
Comment 2 asmund 2004-12-01 02:59:31 UTC
Having considered this a bit more, I feel it is more likely to be an USB issue 
than ALSA, and has retagged it. 
I will happily provide any debugging information needed, I can consistently 
reproduce this. It appears much more frequently when there is significant disk 
Comment 3 Greg Kroah-Hartman 2005-08-18 21:38:42 UTC
Does this still happen on 2.6.13-rc6 or greator?  If so, please reopen this bug.

Note You need to log in before you can comment on or make changes to this bug.