At Tue, 11 Nov 2008 17:15:15 +0530, Arun KS wrote:
On Tue, Nov 11, 2008 at 4:08 PM, Takashi Iwai tiwai@suse.de wrote:
At Tue, 11 Nov 2008 15:55:38 +0530, Arun KS wrote:
Hi,
I am getting an error for amixer, but my amixer controls works fine.
Here is the log:
[root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# amixer amixer: Mixer default load error: Operation not permitted
How about checking via strace?
Below is the strace output:
...
open("/dev/snd/controlC0", O_RDWR) = 3 ioctl(3, USBDEVFS_CONTROL, 0xbea498fc) = 0 fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0 ioctl(3, USBDEVFS_RELEASEINTERFACE, 0xbea49980) = 0 ioctl(3, USBDEVFS_RELEASEINTERFACE, 0xbea49980) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492c0) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492e0) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492e0) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492e0) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492e0) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492d8) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492c0) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492c0) = 0 ioctl(3, USBDEVFS_CONNECTINFO, 0xbea49718) = 0 ioctl(3, USBDEVFS_IOCTL, 0xbea492c0) = -1 EPERM (Operation not permitted)
Weird. USBDEVFS_IOCTL corresponds to SNDRV_IOCTL_ELEM_REPLACE, and USBDEVFS_CONNECTINFO to SNDRV_IOCTL_ELEM_ADD. [some strace versions don't show SNDRV_* ioctls because they are defined via enum instead of #define in asound.h...] These are for user-defined control elements. And, strace shows that you don't use any ~/.asound or /etc/asound.conf...
Takashi