[alsa-devel] ALSA sound/usb/mixer.c:415 cannot get current value for control 2 ch 1: err = -22

Success! I applied the patch against kernel 3.6.9 (AMD's Catalyst driver doesn't support 3.7 yet) and I can now use the snd-usb-audio driver without it hanging up on the wireless audio. I tested a USB sound card, it worked perfectly. There's no sign of the HP Wireless card in ALSA. Thanks a lot! Now I can finally use my slightly decent speakers and my USB MIDI controller.

On Tue, Dec 11, 2012 at 12:59 PM, Eldad Zack eldad@fogrefinery.com wrote:

On Mon, 10 Dec 2012, isaac smith wrote:

...

I have the same issue with my HP Envy 15. The sound card in question is an HP Wireless Audio card that only works with HP-branded wireless speakers, so playing to the card produces no output whatsoever, but does hang whatever process tries to access it. I doubt that many people ever use this feature, so unless someone invests the time to get it working I'd like a way to just ignore it completely. I've blacklisted the snd-usb-audio module for now, but I have a USB sound card and a USB MIDI controller that I'd like to be able to use.

Hi Isaac,

Try this patch - applies against 3.7.

Let me know if that works for you and you can successfully use other USB audio devices.

Cheers, Eldad

diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 88d8ceb..be68c66 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -99,6 +99,42 @@ },

/*

• • Standard Microsystems Corp.
• • HP Wireless Audio
• */

+{

•   USB_DEVICE(0x0424, 0xb832),
  

•   .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
  

•           .vendor_name = "Standard Microsystems Corp.",
  

•           .product_name = "HP Wireless Audio",
  

•           .ifnum = QUIRK_ANY_INTERFACE,
  

•           .type = QUIRK_COMPOSITE,
  

•           .data = (const struct snd_usb_audio_quirk[]) {
  

•                   /* Mixer */
  

•                   {
  

•                           .ifnum = 0,
  

•                           .type = QUIRK_IGNORE_INTERFACE,
  

•                   },
  

•                   /* Playback */
  

•                   {
  

•                           .ifnum = 1,
  

•                           .type = QUIRK_IGNORE_INTERFACE,
  

•                   },
  

•                   /* Capture */
  

•                   {
  

•                           .ifnum = 2,
  

•                           .type = QUIRK_IGNORE_INTERFACE,
  

•                   },
  

•                   /* HID Device, maybe standard compliant? */
  

•                   {
  

•                           /* .ifnum = 3 */
  

•                           .ifnum = -1,
  

•                   }
  

•           }
  

•   }
  

+},

+/*

• Logitech QuickCam: bDeviceClass is vendor-specific, so generic interface
• class matches do not take effect without an explicit ID match.

*/