for the last couple of weeks I've been trying to get the second integrated GPU in my Acer Aspire 7530G to work, without success.
The situation is as follows:
The laptop has two integrated GPUs, one for power saving, one for performance. It uses Hybrid SLI which normally switches between the two cards depending on current performance needs.
In Ubuntu, I can only get the power saving one to work.
Relevant lspci output:
Currently, my Device section in xorg.conf looks like this:
02:00.0 VGA compatible controller: nVidia Corporation GeForce 9100M G (rev a2)
03:00.0 VGA compatible controller: nVidia Corporation GeForce 9300M GS (rev a1)
Without using BusID "PCI:2:0:0", Gnome won't start at all - when using PCI:3:0:0, Gnome doesn't start (screen stays black) and the nvidia driver throws the following errors in xorg.0.log: (emphasis mine)
VendorName "NVIDIA Corporation"
Option "NoLogo" "true"
The complete xorg.0.conf log may be found here: http://pastebin.com/m5ce0a1ee
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "NoLogo" "true"
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
(II) NVIDIA(0): enabled.
(II) NVIDIA(GPU-0): No display devices connected; falling back to: CRT-0
(WW) NVIDIA(GPU-0): Unable to read EDID for display device CRT-0
(II) NVIDIA(0): NVIDIA GPU GeForce 9300M GS (G98) at PCI:3:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 524288 kBytes
(--) NVIDIA(0): VideoBIOS: 62.98.3c.00.11
(II) NVIDIA(0): Detected PCI Express Link width: 1X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 9300M GS at PCI:3:0:0:
(--) NVIDIA(0): CRT-0
(--) NVIDIA(0): CRT-0: 400.0 MHz maximum pixel clock
(II) NVIDIA(0): Assigned Display Device: CRT-0
(==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
(==) NVIDIA(0): will be used as the requested mode.
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "nvidia-auto-select"
(II) NVIDIA(0): Virtual screen size determined to be 640 x 480
(WW) NVIDIA(0): Unable to get display device CRT-0's EDID; cannot compute DPI
(WW) NVIDIA(0): from CRT-0's EDID.
An xorg log of a successful boot with BusID PCI:2:0:0 may be found here: http://pastebin.com/m15956a22
lspci -nn -vv of the 2 GPUS: http://pastebin.com/m559c07c
Ubuntu 8.10, Kernel 2.6.27-11-generic
I already tried nVidia propertiary drivers 180.17 and 180.22 and most of the Ubuntu repository provided drivers (173,177,180). Same error.
After fiddling around with the drivers so much I did a completely fresh installation with Ubuntu provided 180, just to be safe.
I also tried exporting the EDID information with nvidia-settings and loading them manually within xorg.conf (with PCI:3:0:0 as BusID), no luck either.
The weird thing is that the nVidia driver adresses the LCD screen as CRT-0 with the 9300M GS but as DFP-0 with the (working) 9100M G.
To be clear, I don't want to get HybridSLI itself to work, I just need to get the faster of the two GPUs working so I can do some gaming on Ubuntu.
I would greatly appreciate any help or pointers.