linux-kernel - USB device PM oddity in 3.5

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-next>] [day] [month] [year] [list]

Message-ID: <20120524203655.GK1143@zod.bos.redhat.com>
Date:	Thu, 24 May 2012 16:36:56 -0400
From:	Josh Boyer <jwboyer@...hat.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alan Stern <stern@...land.harvard.edu>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: USB device PM oddity in 3.5

I'm testing Linus' tree as the merge window happens, and I've hit an
issue with what I believe is USB device power management (or something)
that is causing my mouse and keyboard to become unresponsive.  After a
very short time of non-use, either device will cut out.  I can move the
mouse around but it doesn't relay to the screen and I noticed this is
because the laser is turned off.  If I click a button on it, it will
turn back on and function again until a small period of non-use.  The
keyboard exhibits similar behavior, "ignoring" the first few key strokes
until it wakes back up.

I found this thread:

http://thread.gmane.org/gmane.linux.usb.general/64292
and
http://marc.info/?t=133552726500001&r=1&w=2

which have similar symptoms, but the kernels I'm using have the
subsequent patches applied.  I'm doing a git bisect at the moment, with
72c04af as the starting good commit and 61011677 as the first bad.  I'll
let you know what comes of this, but I thought I'd mail about it now in
case anyone has any ideas.

josh
--
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/