On Sun, 05 Jan 2014 18:08:40 +0000, Daniel Mack wrote: > Dennis New <dennisn@xxxxxxxxxxxxxxxxxx> wrote: > >For the past many linux kernels, > > Can you spot the last kernel version that worked for you? > > >my usb bluetooth headset randomly > >crashes -- the audio abruptly stops working, I cannot kill -9 the > >mplayer process that was using it, and the only way to get it working > >again is to reboot :|. > > > >The syslog only says: > > kernel: ALSA sound/usb/endpoint.c:501 timeout: still 3 active urbs > > on > >EP #3 > > That's odd, and frankly is more a sign of a USB host controller issue > that one with snd-usb-audio. Can you provide a full dmesg output? Do > you have the same issue with that headset on a different machine? > > >It is very difficult to reproduce -- sometimes it can go for days > >just fine, then in the middle of a song abruptly stop. > > Please try harder :-) Without a proper test case, it seems impossible > to verify a potential fix. Quickly starting and stopping the stream > might be a good start. > > Also, as stated above, please do test on a different machine. Ruling > out the host controller would be a crucial step. I'll try to do more debugging. FWIW my usb host controllers are: 1002:4374 00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI IXP SB400 USB Host Controller (prog-if 10 [OHCI]) 1002:4375 00:13.1 USB controller: Advanced Micro Devices [AMD] nee ATI IXP SB400 USB Host Controller (prog-if 10 [OHCI]) 1002:4373 00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI IXP SB400 USB2 Host Controller (prog-if 20 [EHCI]) The hardware device is a usb-bluetooth headset. lsusb: Bus 003 Device 002: ID 046d:0a29 Logitech, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub When the bug occurs, i.e. when the audio mysteriously stops playing (I forget if the bluetooth connection breaks -- I think it does, but I will double-check), when I pull the usb dongle out, it is recorded in the syslog: kernel: usb 3-1: USB disconnect, device number 4 But it is not detected at all when I plug it back in. So that does indicate an underlying usb host problem? I'll try to get more info. I don't suppose there are any patches I can try applying in the meantime? ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
