Date: Mon, 13 Feb 2006 08:26:30 -0800 From: "Kevin Oberman" <oberman@es.net> To: Gregers Petersen <gp.ioa@cbs.dk> Cc: freebsd-mobile@freebsd.org Subject: Re: Power-drain during suspend? Message-ID: <20060213162630.C989B45041@ptavv.es.net> In-Reply-To: Your message of "Mon, 13 Feb 2006 10:16:52 %2B0100." <43F04E84.2080408@cbs.dk>
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> Date: Mon, 13 Feb 2006 10:16:52 +0100 > From: Gregers Petersen <gp.ioa@cbs.dk> > Sender: owner-freebsd-mobile@freebsd.org > > Anish Mistry wrote: > Just a data point. I have a similar problem on my laptop (Fujitsu > > P2110). Using the acpi_video DPMS patch posted by jhb a while ago > > helps out quite a lot and allows me to suspend for almost 24 hours > > vs. about 9. This is still way less than Windows 2000 on the same > > system which can be suspended for a week with just over 25% power > > drain. I've tried with a stripped down kernel that is just enough to > > boot eg. no USB, Firewire, network, etc.do_power_nodriver=3 and I > > still have the same problem. > > > I have been looking at the patch - and in as much as it has been posted > quite a long time ago, I was wondering if it had been "merged" with the > present src ? > If that is not the case - then I have to admit the following; I have > never before 'added a patch'. So I would need to know how I do that > (feel very silly and novice like, asking this) ... I believe that jhb is working (as time permits) on a general VGA support capability which would include DPMS support, but, if you have a Radeon graphics card, I think you will be better off using RadeonTool for the job. It works very cleanly on my system where the DPMS patch required switching to a VTY and back to X after a resume. I have also seen one report that the system uses less power when RadeonTool turns off the display, but I have not verified this personally. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634
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