linux-kernel - Re: High power consumption after suspend/resume cycle

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 for Android: free password hash cracker in your pocket

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

Message-Id: <1254647833.3845.3.camel@localhost.localdomain>
Date:	Sun, 04 Oct 2009 10:17:13 +0100
From:	The Holy ettlz <theholyettlz@...glemail.com>
To:	Andrew Lutomirski <luto@....edu>
Cc:	linux-kernel@...r.kernel.org,
	pm list <linux-pm@...ts.linux-foundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: High power consumption after suspend/resume cycle

Hello,

> > There's a catch, though: after a suspend/resume cycle, power
> > consumption goes up by over well over a watt.  (On a system that draws
> > about 7 watts before suspending, that's a big deal.)  I've tried
> > turning off X, suspending with 'echo mem > /sys/power/state' to avoid
> > any distro scripts running, and manually restoring SATA power saving
> > settings, but it still happens.  I even tried unbinding e1000e and
> > both USB drivers, unloading the i2400 (wimax) driver, iwlagn, and
> > iwlcore, and it still happens.  This is 100% reproducible, and I'd be
> > happy to test things.

Just out of curiosity: does it make any difference whether tickless mode
is enabled or not, and do you see an excess of wakeups with no apparent
origin, a la http://bugzilla.kernel.org/show_bug.cgi?id=12788 ?

Thanks,
James.

-- 
The Holy ettlz                              TheHolyettlz@...glemail.com
PGP key ID: 03F94B5D
-----------------------------------------------------------------------


Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)