USB Headset: no sound / keyboard freeze, occasional kbd freeze or crash when unplugging
Hi all,
sorry for the crossposting, but I am not sure whether this problem is USB or ALSA related, since the ALSA code *seems* to work just perfectly fine, but no sound ever comes out of the Headset, so it *may* be a transport layer problem.
Got myself a Logitech USB Headset recently and tried to get it to work on my workplace machine & laptop. Both machines showed the same effects (running Kernel 2.6.9 initially and 2.6.10 now): Sound seems to work, ALSA claims everything is fine but no sound is ever audible. [*]
Strangely, when first plugging it into the workplace machine, I could get it to work: the snd-usb-audio module of ALSA was missing, so I recompiled the kernel with that module and -- being too lazy -- did not reboot, but simply installed the new kernel on disk in place of the old one (which was still running) and loaded the module. Things worked perfectly then, as far as I could tell -- crystal clear sound, good recording.
Only after rebooting into the kernel that had been recompiled along with the module did things stop working.
When unplugging/replugging the headset trying to get it to work, I experienced strange phenomena: the keyboard would stop working, and once it didn't work when I booted the machine with the headset plugged in. In one case, I got a kernel crash reported to syslog.
Unfortunately, I could not reproduce this with a debugging enabled kernel, so there is not much information, but what I had was filed as
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=745
and
http://bugzilla.kernel.org/show_bug.cgi?id=3954
since I am not sure where the problem actually lies.
If you need more info, please let me know.
Regards,
Georg
[*] Yes, the mixer does work and are not muted/set to zero.
Signature · 4 lines
Georg C. F. Greve <[email protected]> Free Software Foundation Europe (http://fsfeurope.org) GNU Business Network (http://mailman.gnubiz.org) Brave GNU World (http://brave-gnu-world.org)
Quoted 4 lines · Georg C. F. Greve
Got myself a Logitech USB Headset recently and tried to get it to work on my workplace machine & laptop. Both machines showed the same effects (running Kernel 2.6.9 initially and 2.6.10 now): Sound seems to work, ALSA claims everything is fine but no sound is ever audible. [*]
Strange. I've got a Logitech USB headset too, and I do hear sound out of it. I do have no sound problems too with Dallas 2401 based USB speakers. Also, gnomemeeting seems to have troubles opening the Logitech Headset microphone.
Quoted 4 lines
When unplugging/replugging the headset trying to get it to work, I experienced strange phenomena: the keyboard would stop working, and once it didn't work when I booted the machine with the headset plugged in. In one case, I got a kernel crash reported to syslog.
This looks like an X problem to me. I sometimes have the same phenomenon when plugging/unplugging USB devices. It doesn't happen however when I'm on a text console. Also, to get the keyboard working again, it is sufficient in my case to restart X.
Tom
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|| On Tue, 28 Dec 2004 18:10:35 +0100 || [email protected] wrote:
Quoted 4 lines
Quoted 4 lines
When unplugging/replugging the headset trying to get it to work, I experienced strange phenomena: the keyboard would stop working, and once it didn't work when I booted the machine with the headset plugged in. In one case, I got a kernel crash reported to syslog.
s> This looks like an X problem to me.
It also happens on the console while no X is running.
That is why I am sceptical about the hypothesis of it being a X problem. ;)
Regards,
Georg
Signature · 4 lines
Georg C. F. Greve <[email protected]> Free Software Foundation Europe (http://fsfeurope.org) GNU Business Network (http://mailman.gnubiz.org) Brave GNU World (http://brave-gnu-world.org)