RE: modular Xorg and recent laptop (switchable graphics)

[rakakabe super <rakakabe%live.fr@localhost>]

I'm using this xorg.conf, and Intel is the only card that works:

 Section "ServerLayout"
 Identifier     "X.org Configured"
 Screen      0  "IGPScreen" 0 0
# Screen      1  "AMDScreen" RightOf "IGPScreen"
 InputDevice    "Mouse0" "CorePointer"
 InputDevice    "Keyboard0" "CoreKeyboard" 
 Option        "IsolateDevice" "PCI:0:2:0"
 Option        "SingleCard"    "True"
EndSection

...

...

Section "Monitor"
 Identifier   "IGPMonitor"
 VendorName   "Monitor Vendor"
 ModelName    "Monitor Model"
EndSection

Section "Monitor"
 Identifier   "AMDMonitor"
 VendorName   "Monitor Vendor"
 ModelName    "Monitor Model"
 Option      "Ignore" "True"
EndSection

Section "Device"
 Identifier  "IGP"
 Driver      "vesa"
 VendorName  "X.Org Foundation"
 BoardName   "Unknown Board"
 BusID       "PCI:0:2:0"
 Screen     0
EndSection

Section "Device"
 Identifier  "AMD"
 Driver      "radeonhd"
 VendorName  "AMD GPG"
 BoardName   "Unknown Board"
 BusID       "PCI:1@1:0:0"
 Screen     1
EndSection

Section "Screen"
 Identifier "IGPScreen"
 Device     "IGP"
 Monitor    "IGPMonitor"
 SubSection "Display"
  Viewport   0 0
  Depth     24
 EndSubSection
EndSection

Section "Screen"
 Identifier "AMDScreen"
 Device     "AMD"
 Monitor    "AMDMonitor"
 SubSection "Display"
  Viewport   0 0
  Depth     24
 EndSubSection
EndSection

Anyway, interesting info in http://www.thinkwiki.org/wiki/Switchable_Graphics.

I'll keep an eye on it (if i have a time). 

 

Cheers


> From: sverre%viewmark.com@localhost
> To: rakakabe%live.fr@localhost
> Subject: Re: modular Xorg and recent laptop (switchable graphics)
> Date: Wed, 28 Sep 2011 16:50:28 -0600
> 
> On 2011-09-28 at 13:23 you wrote:
> > Hi,
> > 
> > After trying differents configurations in xorg.conf, and 2 weeks of
> > testing, I've finally managed to run X on the
> > intel graphics (only the 'vesa' driver works and a terrible 1024x768) as a
> > primary device. However, making the dedicated AMD graphic as a primary
> > device is impossible (or I'm wrong).
> > In brief, it's work but not as you're expected.
> 
> I do not have specific information about your case, but...
> 
> My Lenovo laptop has a BIOS setting where I can lock in which graphic device 
> I 
> want to use. When I do so, lspci shows only a single graphics card and X 
> works. At least for Thinkpads, you cannot use the BusID configuration option 
> (in xorg.conf) to make a dynamic choice.
> 
> For Thinkpads there is some information on
> 
> http://www.thinkwiki.org/wiki/Switchable_Graphics
> 
> I have not looked at the vga_switcheroo driver that they discuss there.
> 
> Regards,
> Sverre