On Fri, Aug 18, 2017 at 12:40:47PM +0000, Joakim Tjernlund wrote: > 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 Try sending this to the alsa developer list, which owns the sound usb driver (hint, scripts/get_maintainer.pl works on files too.) Also, 4.9 is really old, try the latest kernel release, this might be fixed already... thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
