[SRU][Xenial][Yakkety][PATCH 1/1] UBUNTU: SAUCE: (no-up) ALSA: usb-audio: Add quirk for sennheiser officerunner

Joseph Salisbury joseph.salisbury at canonical.com
Fri Sep 16 14:46:44 UTC 2016

From: David Britton <davidpbritton at gmail.com>

BugLink: http://bugs.launchpad.net/bugs/1622763

This USB headset doesn't seem to support sample rate polling, similar to this issue:


Every time something goes to interact with the device (playing a sound 
file, opening the sound panel, opening web audio/video), a 10 second pause 
is encountered, where dmesg prints out two messages:

  usb 2-1.2: 2:1: cannot get freq at ep 0x83
  usb 2-1.2: 2:1: cannot get freq at ep 0x83

Once the sound is playing, everything is fine. These sample rate polls 
don't seem to keep happening. After waiting for maybe 30 seconds after 
sound is playing, future interactions will again trigger the pause.

This 10 second pause can introduce other subtle problems. For instance, 
google hangouts will sometimes timeout waiting for the sound device to
respond, and the browser tab will crash or not fully load as a result. The 
sound panel often also will not display the device in the list of choices,
 and you will have to close it out. Sometimes restart pulse audio to get it
 to recognize the headset again.

Signed-off-by: Joseph Salisbury <joseph.salisbury at canonical.com>
 sound/usb/quirks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index db11ecf..6faf2f9 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1144,6 +1144,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
 	case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */
 	case USB_ID(0x1de7, 0x0114): /* Phoenix Audio MT202pcs */
 	case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
+	case USB_ID(0x1395, 0x740a): /* Sennheiser Officerunner */
 		return true;
 	return false;

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