[ltp] edge e520

Martin Steigerwald linux-thinkpad@linux-thinkpad.org
Sun, 18 Dec 2011 20:32:05 +0100

Am Sonntag, 18. Dezember 2011 schrieb xbl7:
> Hello, i bought thinkpad edge e520 and i install debian wheezy on in, i
> probably have something wrong with acpi cause computer stay on bateries
> only for one and half hour
> on windows it is about five hours, do you have similar problem? what
> can i do with that?

Does it have Intel onboard graphics with Sandybridge?

Then try:

merkaba:~> cat /etc/modprobe.d/i915-kms.conf 
# Thorsten Leemhuis, Die Woche: Ungenutztes Stromsparpotenzial
# http://www.heise.de/open/artikel/Die-Woche-Ungenutztes-
# Eugeni Dodonov, Intel Linux Graphics
# Following the open source road from Kernel to UI toolkits
# http://www.scribd.com/doc/73071712/Intel-Linux-Graphics
options i915 modeset=1 i915_enable_rc6=1 i915_enable_fbc=1 semaphores=1

Especially enabling rc6 is important. The Heise Open article might be 
available in english as well.

Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7