This was bug 244474 (which I closed since the problem had disappeared).
I have the same problem with 2.6.9-powerpc. A strace gives:
[...]
open("/dev/mixer", O_RDWR) = 9
ioctl(9, 0x40044dfe, 0x100c7f74) = 0
ioctl(9, 0x40044dfb, 0x100c7f78) = 0
ioctl(9, 0x40044dfd, 0x100c7f7c) = 0
ioctl(9, 0x40044dff, 0x7ffff038) = 0
ioctl(9, 0x40044d00, 0x7ffff03c) = 0
write(8, "\1\30\0\r\4\300\0\n\0\0\0%\0\0\0\0\0\1\0\1\0\0\0\1\0\0"..., 548) = 548
read(8, "[EMAIL PROTECTED]"..., 32) = 32
write(8, "7\30\0\5\4\300\0\26\0\0\0%\0\0\0\4\0\303\303\3037\0\0\5"..., 96) = 96
read(8, "\1\377\0E\0\0\0\0\0\0\0\0\0\0\216l\0\0\0\0\20\25\22\374"..., 32) = 32
ioctl(9, 0xc0044d00, 0x7fffef00) = 0
ioctl(9, 0x40044dff, 0x7fffef00) = 0
ioctl(9, 0xc0044dff, 0x7fffef00) = 0
ioctl(9, 0x40044d05, 0x7ffff03c) = 0
ioctl(9, 0xc0044d05, 0x7fffef00) = 0
ioctl(9, 0x40044dff, 0x7fffef00) = 0
ioctl(9, 0xc0044dff, 0x7fffef00) = 0
ioctl(9, 0x40044d06, 0x7ffff03c) = 0
ioctl(9, 0xc0044d06, 0x7fffef00) = 0
ioctl(9, 0x40044dff, 0x7fffef00) = 0
ioctl(9, 0xc0044dff, 0x7fffef00) = 0
ioctl(9, 0x40044d07, 0x7ffff03c) = -1 EPERM (Operation not permitted)
write(2, "tkmixer: ioctl error on device \""..., 76tkmixer: ioctl error on
device "/dev/mixer"
reason: Operation not permitted
) = 76
[...]
gnome-volume-control gives warnings:
** (gnome-volume-control:5579): WARNING **: Error getting device (7) volume:
Operation not permitted
** (gnome-volume-control:5579): WARNING **: Error getting recording device (7)
volume: Operation not permitted
but works without any problem. So, this is not a bug in the kernel.
--
Vincent Lefèvre <[EMAIL PROTECTED]> - Web: <http://www.vinc17.org/>
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Work: CR INRIA - computer arithmetic / SPACES project at LORIA
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