linux-kernel - Re: Logitech HD Webcam C525 does not work when connected to USB 2 port, works on USB 3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.44L0.1207022039360.27935-100000@netrider.rowland.org>
Date:	Mon, 2 Jul 2012 20:40:58 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Frederik Himpe <fhimpe@...enet.be>
cc:	linux-kernel@...r.kernel.org, <linux-usb@...r.kernel.org>,
	<linux-uvc-devel@...ts.sourceforge.net>
Subject: Re: Logitech HD Webcam C525 does not work when connected to USB 2
 port, works on USB 3

On Mon, 2 Jul 2012, Frederik Himpe wrote:

> > Have you tried using the webcam on a different computer?
> 
> I just tried it on a different system (Dell Latitude E6400), and it
> worked fine on the USB2 ports (kernel version was 3.4.1 on that system,
> though). The webcam also works fine on the affected system and USB2
> ports in Windows.

What happens if you disable USB runtime suspend on the affected system?  
Windows tends not to use it.

Alan Stern

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/