On Dec 13, 2007 10:47 AM, RoLo <<a href="mailto:rolodoom@gmail.com">rolodoom@gmail.com</a>> wrote: <div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hello. I just notice that my card stops working. I have a Sound Blaster Live 5.1. I have tested the next way so I think that the card is still correctly installed, so I guess the problem is somewhere I don't know. rolodoom@rolinux:~$ cat /proc/asound/cards  0 [Live           ]: EMU10K1 - SB Live [Unknown]                      SB Live [Unknown] (rev.10, serial:0x80671102) at 0x1000, irq 21 Then I tested with the next command and actually get sound, but only from console, when I open totem, audacity, etc, there is no sound. Jack also stops working. rolodoom@rolinux:~$ speaker-test -Dplug:surround51 -c6 -twav speaker-test 1.0.14 Playback device is plug:surround51 Stream parameters are 48000Hz, S16_LE, 6 channels WAV file(s) Rate set to 48000Hz (requested 48000Hz) Buffer size range from 64 to 16384 Period size range from 16 to 16384 Using max buffer size 16384 Periods = 4 was set period_size = 4096 was set buffer_size = 16384  0 - Front Left  4 - Center  1 - Front Right  3 - Rear Right  2 - Rear Left Where is the problem?? </blockquote><div> That is not a high priority IRQ.  However, the problem is probably that you have not set the indices in /etc/modprobe.d/alsa-base The pattern on this list of people complaining about device switching tends to come from an incorrectly configured alsa-base.  You need to make the SB the default index 0 card on the system and then set some defaults in System/Preferences/Sound.  If other devices contend, then you need to hardcode their index or make sure they never connect. Hope this helps though you have probably done this, jonathan adams leonard </div></div>