Pulseaudio not working with custom kernel.

Andrea mariofutire at googlemail.com
Thu Jun 19 11:17:19 UTC 2008


Hi,

I've tried to recompile the kernel from sources and I have a problem with the audio layer.
I am not using any Fedora Patch, this is just the plain kernel from www.kernel.org.

pulseaudio fails at start saying the it cannot open the audio device.

I've run strace on pulseaudio and the (first) difference is here

Fedora kernel:
open("/dev/snd/controlC0", O_RDONLY)    = 15

Custom kernel:
open("/dev/snd/controlC0", O_RDONLY)    = -1 EACCES (Permission denied)

The problem is in the directory /dev/snd

Booting Fedora Kernel:
ll /dev/snd
crw-rw----+ 1 root root 116, 13 2008-06-18 22:00 controlC0
crw-rw----+ 1 root root 116,  6 2008-06-18 22:00 controlC1
crw-rw----+ 1 root root 116, 12 2008-06-18 22:00 pcmC0D0c
crw-rw----+ 1 root root 116, 11 2008-06-18 22:00 pcmC0D0p
crw-rw----+ 1 root root 116, 10 2008-06-18 22:00 pcmC0D1c
crw-rw----+ 1 root root 116,  9 2008-06-18 22:00 pcmC0D2c
crw-rw----+ 1 root root 116,  8 2008-06-18 22:00 pcmC0D3c
crw-rw----+ 1 root root 116,  7 2008-06-18 22:00 pcmC0D4p
crw-rw----+ 1 root root 116,  5 2008-06-18 22:00 pcmC1D0c
crw-rw----+ 1 root root 116,  4 2008-06-18 22:00 pcmC1D0p
crw-rw----+ 1 root root 116,  3 2008-06-18 22:00 seq
crw-rw----+ 1 root root 116,  2 2008-06-18 22:00 timer

Recompiled kernel:

ll /dev/snd
crw-rw---- 1 root root 116, 10 2008-06-18 21:19 controlC0
crw-rw---- 1 root root 116, 13 2008-06-18 21:19 controlC1
crw-rw---- 1 root root 116,  9 2008-06-18 21:19 pcmC0D0c
crw-rw---- 1 root root 116,  8 2008-06-18 21:19 pcmC0D0p
crw-rw---- 1 root root 116,  7 2008-06-18 21:19 pcmC0D1c
crw-rw---- 1 root root 116,  6 2008-06-18 21:19 pcmC0D2c
crw-rw---- 1 root root 116,  5 2008-06-18 21:19 pcmC0D3c
crw-rw---- 1 root root 116,  4 2008-06-18 21:19 pcmC0D4p
crw-rw---- 1 root root 116, 12 2008-06-18 21:19 pcmC1D0c
crw-rw---- 1 root root 116, 11 2008-06-18 21:19 pcmC1D0p
crw-rw---- 1 root root 116,  3 2008-06-18 21:19 seq
crw-rw---- 1 root root 116,  2 2008-06-18 21:19 timer

1) Has anybody tried it?
2) Does anybody know what the + is in the directory listing?
3) why the minor devices number are different?




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