On Sat, Jul 9, 2011 at 2:25 AM, Daniel Mack <zonque@xxxxxxxxx> wrote: > Can you apply the attached patch and send us a the kernel log messages again? After power cycling the device after boot: [ 191.372814] 10:1:1 : invalid UAC_FORMAT_TYPE desc (protocol 32, bLength 10) [ 191.372935] 10:2:1 : invalid UAC_FORMAT_TYPE desc (protocol 32, bLength 10) [ 191.372940] 10:2:2 : invalid UAC_FORMAT_TYPE desc (protocol 32, bLength 10) [ 191.373059] Ignoring UAC2_EXTENSION_UNIT [ 191.373071] snd-usb-audio: probe of 1-8:1.0 failed with error -5 For fun, I tried VirtualBox, and got these additional messages: [ 391.981360] usb 1-8: reset high speed USB device number 10 using ehci_hcd [ 395.091124] usb 1-8: usbfs: usb_submit_urb returned -27 [ 395.091130] usb 1-8: usbfs: usb_submit_urb returned -27 (last line repeated dozens of times). On tearing down of VirtualBox: [ 631.550024] usb 1-8: reset high speed USB device number 10 using ehci_hcd [ 631.701902] 10:1:1 : invalid UAC_FORMAT_TYPE desc (protocol 32, bLength 10) [ 631.702099] 10:1:1 : invalid UAC_FORMAT_TYPE desc (protocol 32, bLength 10) [ 631.702181] 10:2:1 : bogus bTerminalLink 22 [ 631.702184] 10:2:2 : bogus bTerminalLink 22 Thanks for you help, Daniel. nicolai ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user