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-- 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