ThinkPad T500: FC 10, X Windows on both Intel and Radeon

[GeronimoS]

For those of you with T500, did any of you manage to have X windows in FC 10 running with both of the following:

- VGA Compatible Controller: Intel Corporation Cantiga Integrated Graphics Controller (rev 07)
- VGA Compatible Controller: ATI Technologies Inc Mobility Radeon HD 3650

?

If so, would you mind posting your xorg.conf, as well as a short procedure or critical links on the Web?

Thanks.

[GeronimoS]

SpeedadeYxan says:
---------
I got my Radeon up and running!

Lenovo ThinkPad T500 2082-5AG with Mobility Radeon HD 3650 (1680x1050) T500 uses a dual graphic chips, I turned that off in
BIOS/Config/Display/Graphics Device -> Discrete Graphics.
Normally this use 'Switchable Graphics' which depends on the PowerManager.

Could explain why it did work one time and the other not.

http://forums.fedoraforum.org/showth...+mobility+3650
---------

Is he talking about a menu in the
Intel Management Engine (ME) BIOS Extension?
that one sees are the very beginning of the boot of the machine, or something else? I couldn't find anything similar there yet.

[EnglandA]

Can't really give an exact answer, but when I looked at getting one off these laptops, I discovered that the only method to get the ATI card to work was to disable the discrete graphics in the bios. My advice is to take a look around this site: http://www.thinkwiki.org/wiki/Category:T500

[GeronimoS]

Thanks.

OK, I found a Lenovo doc:

--------
Can I disable Switchable Graphics?

Yes, there is a BIOS setup option to disable Switchable Graphics. In the BIOS setup utility (press F1 immediately after powering-on the system, while the ThinkPad logo is shown), enter the Config menu, then enter the Display menu. Change the Graphics Device from Switchable Graphics (the default) to either Integrated Graphics or Discrete Graphics, whichever you prefer.

Switchable Graphics Frequently Asked Questions (FAQ) - ThinkPad R400, T400, T500, W500
http://www-307.ibm.com/pc/support/si...cid=MIGR-70495

There was a confusion in my mind between the
BIOS, which one enters with F1 during boot
and the
Intel Management Engine BIOS Extension
listed in the above, and which one can enter too, during the boot., with Control-P.

[GeronimoS]

OK, after changing in the T500 BIOS (F1 during boot to get there) as mentioned in the above by SpeedadeYxan :

BIOS/Config/Display/Graphics Device -> Discrete Graphics

(from the default Switchable Graphics)

the /etc/X11/xorg.conf is generated seemingly correctly for Radeon 3650
by
system-config-display
and the KDE shows up after
startx
from root shell.

Also, one must do:
BIOS/Config/Display/OS Detection for Switchable Graphics -> Disable
or things change back:-)


In much better shape already.

SOLVED