Public bug reported:
Binary package hint: linux-source-2.6.24
Trying to use a logitech headset M/N 03556A, I opened
preferences->sound, and set all inputs and outputs to usb-audio, and
tested all successfully.
Audio from applications ceased to work. Re-booted, and plugged headset
into a different port (was using a potentially flaky usb hub now
plugging directly into usb port on motherboard).
At this point, trying to open up the sound control panel is failing,
even with the usb headset unplugged. Stracing gnome-sound-properties
results in this:
"[...]
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
ioctl(17, USBDEVFS_CONNECTINFO, 0x7fff794cc280) = 0
write(16, "stop\0", 5) = 5
futex(0x9abee4, 0x80 /* FUTEX_??? */, 1) = 0
futex(0x9abeb0, 0x81 /* FUTEX_??? */, 1) = 0
close(15) = 0
close(16) = 0
close(17) = 0
pipe([15, 16]) = 0
stat("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=8611, ...}) = 0
open("/dev/snd/controlC1", O_RDONLY) = 17
close(17) = 0
open("/dev/snd/controlC1", O_RDWR) = 17
ioctl(17, USBDEVFS_CONTROL, 0x7fff794cc25c) = 0
fcntl(17, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fcntl(17, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE) = 0
ioctl(17, USBDEVFS_RELEASEINTERFACE, 0x7fff794cc3c0) = 0
ioctl(17, USBDEVFS_RELEASEINTERFACE, 0x7fff794cc3c0) = 0
ioctl(17, USBDEVFS_CONNECTINFO
"
The last line is incomplete and doesn't return. The process is un-
killable as user or root:
[EMAIL PROTECTED]:~$ sudo kill -9 6205
[sudo] password for spacey:
[EMAIL PROTECTED]:~$ ps -ef | grep 6205
spacey 6205 1 0 12:38 ? 00:00:00 gnome-sound-properties
spacey 6481 6438 0 12:50 pts/1 00:00:00 strace -p 6205
spacey 6744 6490 0 13:16 pts/2 00:00:00 grep 6205
[EMAIL PROTECTED]:~$ sudo kill -9 6481
[EMAIL PROTECTED]:~$ ps -ef | grep 6205
spacey 6205 1 0 12:38 ? 00:00:00 gnome-sound-properties
spacey 6750 6490 0 13:17 pts/2 00:00:00 grep 6205
[EMAIL PROTECTED]:~$ sudo kill -9 6205
[EMAIL PROTECTED]:~$ ps -ef | grep 6205
spacey 6205 1 0 12:38 ? 00:00:00 gnome-sound-properties
spacey 6753 6490 0 13:17 pts/2 00:00:00 grep 6205
[EMAIL PROTECTED]:~$
Requisite info:
1) Release info:
[EMAIL PROTECTED]:~$ uname -a
Linux gary 2.6.24-10-generic #1 SMP Fri Feb 22 18:26:06 UTC 2008 x86_64
GNU/Linux
[EMAIL PROTECTED]:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
2) Either gnome-control-center, dbus, alsa, or kernel
3) [EMAIL PROTECTED]:~$ uname -a
Linux gary 2.6.24-10-generic #1 SMP Fri Feb 22 18:26:06 UTC 2008 x86_64
GNU/Linux
[EMAIL PROTECTED]:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
4) I expect the lack of a USB audio device (or the USB device path being
looked for, perhaps?) to cause the applet to drop back to other
available devices.
5) I have 4 stuck gnome-sound-properties control panels in an un-
killable state. The system cannot shutdown properly (I need to power
cycle).
Thanks,
-Peter
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
sound subsystem fails after setting to usb headset
https://bugs.launchpad.net/bugs/197368
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