I have two USB head sethead (Logitech Inc Logitech Stereo H650e and
Jabra Jabra UC VOICE 550a) who both causes lots of:
usb 1-2: 1:1: cannot set freq 44100 to ep 0x81
errors when using them pin pidgin audio chats.
I found that adding a small delay here:
diff -u sound/usb/clock.c.org sound/usb/clock.c
--- sound/usb/clock.c.org 2017-08-18 14:38:05.597977669 +0200
+++ sound/usb/clock.c 2017-08-18 14:20:14.653661513 +0200
@@ -304,6 +304,7 @@
iface, fmt->altsetting, rate, ep);
return err;
}
+ msleep(1);
/* Don't check the sample rate for devices which we know don't
* support reading */
it seems one cannot do these settings too fast
Ant better idea fir a fix? kernel 4.9.44
Jocke--
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