hybrid-graphics-linux team mailing list archive

[Will <launchpad@xxxxxxxxxx>]

Sebastian,

I have very much the same setup as you (T410s with Gentoo x86-32 running
Tuxonice 2.6.35), and if I understand your post correctly, I've had
similar results.

I have been able to power the discrete graphics up and down (using the
ACPI call method) only with the BIOS set to integrated. I've attached a
short script I wrote to toggle power for the discrete graphics. I rarely
use it because I almost always run with the discrete graphics enabled in
the BIOS.

I had no luck at all getting vgaswitcheroo to work. I did have much
trouble with framebuffer in that the kernel/xorg settings because it
seems that there is a very narrow set of config options that allow
switching from one to the other, even in the BIOS.

My German is rusty; however, I'll take a closer look at your how-to
later today or tomorrow.

-Will

P.S. I have almost all my hardware functioning (I haven't bothered with
the camera yet); I'll send you my email address if you have any hardware
questions.

On 10/29/10 06:47, Sebastian Müller wrote:
> Hi there,
> 
> i have a Intel GMA HD and NVIDIA Quadro NVS3100 in my laptop. I can
> choose to use NVIDIA Optimus, Discrete or Integrated Graphics, so i am
> be able to use the Intel Card when mode is NVIDIA Optimus or Integrated,
> and i can use the nvidia card with dedicated setting (nvidia nd
> nouveau).
> 
> I use Gentoo x86_64, with 2.6.36 Kernel and xorg 1.9. Most of the time i
> use integrated setting and work with the intel chip on linux.
> 
> I compiled my system to match that specification: (also describted in my
> german howto at the bottom of this mail)
> http://intellinuxgraphics.org/2010Q3.html
> 
> I was not able to switch cards, i have vgaswitcheroo integrated in my
> kernel but it does not load (no entry in dmesg, and no vgaswitcheroo in
> /sys/kernel/debug/). I remember that a week ago it was loaded with
> NVIDIA Optimus setting in bios, and vgaswitcheroo was there. But when i
> tried to switch it my framebuffer the display gets black until i reboot
> the system. Maybe vgaswitcheroo only working with vesafb, now i am using
> intelfb (with no other framebuffer build in the kernel.) and don't see
> vgaswitcheroo.
> 
>  # dmidecode -s system-product-name
> 25379UG
>  # dmidecode -s system-version
> ThinkPad T410
>  # lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep
> VGA
> 00:02.0 VGA compatible controller [0300]: Intel Corporation Arrandale
> Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA
> controller])
> ( i have choosen discrete graphics in bios settings)
> 
> Here is what i get with bios setting to nvidia optimus:
> # lspci | grep -i vga
> 00:02.0 VGA compatible controller: Intel Corporation Arrandale
> Integrated Graphics Controller (rev 02)
> 01:00.0 VGA compatible controller: nVidia Corporation Device 0a6c (rev
> a2)
> 
> i wrote a howto to get intel and nvidia (when switched in bios settings)
> working with gentoo (in german language)
> http://www.neoberserker.de/phpBB3/viewtopic.php?f=13&t=2132
> 
> Maybe someone find it usefull.
> 
> Hopefuly it is possible to switch nvidia optimus in the future, maybe i
> can help abit
> 
> lg
> Sebastian Müller

Attachment: toggle_gpu_pwr.sh
Description: Bourne shell script