Date: Thu, 13 Oct 2005 01:02:20 +0000 From: Eric Kjeldergaard <kjelderg@gmail.com> To: Barkley Vowk <bvowk@math.ualberta.ca> Cc: freebsd-mobile@freebsd.org Subject: Re: Suspend drains battery on IBM T42 Message-ID: <d9175cad0510121802i3776dcb7j@mail.gmail.com> In-Reply-To: <20051012155949.G54439@3jane.math.ualberta.ca> References: <20051012155949.G54439@3jane.math.ualberta.ca>
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On 12/10/05, Barkley Vowk <bvowk@math.ualberta.ca> wrote: > I just got a new T42 notebook, and everything works ok, except when I dro= p > the notebook into acpi sleep, it burns through the battery in 8 hours or > so. It would be nice if the notebook could suspend at least overnight. > > I've also noticed that the suspended notebook is warm to the touch. And, > that when the notebook is suspended, the LCD backlight goes off, but the > text is still faintly visible. > > This site leads me to believe that my radeon chipset isn't being put to > bed: > http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep > > I'm running 6.0-B5, and I've got acpi_ibm, acpi_video loaded (I kind of > wish suspend/resume would work with drm enabled). > > I had tried using apm instead of acpi, but usb fails to work after > resuming, so I didn't test to see if the power drain was better. you may want to check out radeontool http://www.init-main.com/radeontoolport.tar.gz . Another common user of power in suspended laptops seems to be USB not shutting down. Good luck with your troubles, Eric -- If I write a signature, my emails will appear more personalised.
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