Re: [Alsa-user] no sound in Asus A6 laptop (HDA-Intel)

[Takashi I. <ti...@su...>]

At Wed, 07 Sep 2005 15:04:38 +0100,
psalazar wrote:
> 
> 
> > It's usually not a problem of the driver but something else of the
> > system, for example, inproper udev set up or wrong permissons of
> > device files.
> > 
> 
> humm... you may have a point here.
> 
> # ll /dev/snd/*
> crw-------  1 psalazar root 116,  0 Sep  7 14:41 /dev/snd/controlC0
> crw-------  1 psalazar root 116, 24 Sep  7 14:41 /dev/snd/pcmC0D0c
> crw-------  1 psalazar root 116, 16 Sep  7 14:41 /dev/snd/pcmC0D0p
> crw-------  1 psalazar root 116, 17 Sep  7 14:41 /dev/snd/pcmC0D1p
> crw-------  1 psalazar root 116,  1 Sep  7 14:41 /dev/snd/seq
> crw-------  1 psalazar root 116, 33 Sep  7 14:41 /dev/snd/timer
> 
> Strange... the owner is my user account and not root or audio group!!

The device owners/permissions can be changed dynamically via
pam_logindevperm and/or udev.


> > > BTW, when I run with 2.6.12.x kernel, the alsamixer runs fine. I simple
> > > don't hear any sound...
> > 
> > It's not the kernel problem, I guess.
> > 
> > Try to run strace with alsamixer.
> 
> Here is the dump of strace:
(snip)
> ioctl(3, USBDEVFS_IOCTL, 0xbfd3f030)    = 0
> ioctl(3, USBDEVFS_CONNECTINFO, 0xbfd3f480) = -1 EINVAL (Invalid
> argument)

USBDEVFS_CONNECTINFO = SND_CTL_IOCTL_ELEM_INFO, so this might be a bug
in the new simple layer in 1.0.10rc1.
Try to downgrade alsa-lib 1.0.9 and see whether it works.


Takashi