Hi,
we are using the alternatives system for it as per Debian policy
Am 29.09.2011 16:25, schrieb Carlos Alberto Lopez Perez:
Package: fglrx-driver
Version: 1:11-8-3
Severity: wishlist
The new version of the tool aticonfig includes a new function for switching the
graphic card in computers with two GPUs (these are usually sandybridge based
laptops)
# Select ATI (discrete GPU)
aticonfig --px-dgpu
# Select Intel (integrated GPU)
aticonfig --px-igpu
# List which one is activated
aticonfig --px-list
See test example:
For this to work, the aticonfig executes a script ( /usr/lib/fglrx/switchlibGL
and /usr/lib/fglrx/switchlibglx ) that is not available at Debian, so the tool
fails to switch graphics properly.
The wiki of Gentoo has more information about this scripts:
http://en.gentoo-wiki.com/wiki/Fglrx-hybrid-graphics
I have implemented this script for Debian, it uses update-alternatives to switch between
the GL libraries, and also updates the xorg.conf file for each GPU creating symlinks. The
configuration for the ATI card (xorg.dgpu.conf) is generated with aticonfig
--initial and for the integrated one, it is simply a very basic skeleton
configuration, so the X server is able to auto-detect the devices.
I also created a Debian package for it. Here is it:
http://people.igalia.com/clopez/fglrx-hybrid-switch_1.0.tar.gz
Simply untar and do the debuild to generate the package. Feel free to improve
and/or modify as you desire.
I wish see this included in Debian. Thanks!
Here is some test:
# echo xhost local: /etc/X11/Xsession.d/999-xhost
# aticonfig --px-igpu
PowerXpress: Integrated GPU is selected (Power-Saving mode), please restart
Xserver(s) for changes to take effect!
# /etc/init.d/gdm3 restart
Stopping GNOME Display Manager: gdm3.
Starting GNOME Display Manager: gdm3.
# DISPLAY=:0.0 glxgears
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
296 frames in 5.0 seconds = 59.011 FPS
# aticonfig --px-dgpu
PowerXpress: Discrete GPU is selected (High-Performance mode), please restart
Xserver(s) for changes to take effect!
# /etc/init.d/gdm3 restart
Stopping GNOME Display Manager: gdm3.
Starting GNOME Display Manager: gdm3.
# DISPLAY=:0.0 glxgears
20585 frames in 5.0 seconds = 4116.958 FP
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