Comment 41 for bug 884210

Have been affected by this bug for years now. Can't remember exactly when it started, but for sure all subsequent kernel official releases since this time have exhibited it, until the current 3.5.0-21-generic #32.
The difference that may happen from one kernel to another is how frequently the bug ramdomly occurs on boots.

So I confirm what Marko wrote in his post (http://www.techytalk.info/logitech-e3500-webcam-and-cannot-set-freq-16000-to-ep-0x86/) :
"Some Logitech web-cams have serious problems all of the last kernel revisions (somewhere since 2.6.26 kernel revision)"

Have recently discovered and applied Marko's workaround, described in his post, just changing the detected string from "cannot set freq 16000 ..." to "cannot set freq 48000 ...". Works very well, thanks to him ...

Here is my Logitech Webcam model :

$ lsusb
Bus 001 Device 002: ID 046d:0825 Logitech, Inc. Webcam C270

And a description of my symptoms, under 12.10 (quantal) 64-bit + 3.5.0-21-generic #32 kernel :

I have tons of "cannot set freq 48000 to ep 0x86" in Syslog, and the boot randomly hangs very often, more than 50% of times. The login screen appears, but without the background theme : it's all blue-purple, and the mouse and keyboard (both USB, like the webcam) are unresponsive. Sometimes it suddenly unfreezes after a while (10 to 30 seconds or so), but most of the times never : I have to hard reset the PC.
The problem disappears if I uninstall the "indicator-sound" package, which confirms, like the "unplug during boot" workaround, that the issue with Logitech USB webcam is only in startup sequence, at least for me.

I am also glad to see the importance has been set to "high" ...