For bbswitch I don't know, you may better ask Lekensteyn directly.

For X, maybe you can try to set BusID in xorg.conf, so that it use the discrete card. I'm not sure if it will work, because it highly depends on how things are wired together in your laptop (both cards and the screen).

Bruno

Le 17/07/2012 21:11, Michael Rodríguez-Torrent a écrit :
Hi Bruno, thank you for getting back to me. That's frustrating to hear that integrated nVidia can't be handled in the same way as Intel. Will bbswitch work to turn off the discrete card, however? Or should I use the acpi_call module with the call I mentioned (described here: http://luizfar.wordpress.com/2010/06/29/how-to-switch-off-xps1340-discrete-video-card-on-linux/)?

Also, are there known ways to force X to use the discrete card full-time rather than the integrated chip? Do you know if there's some way I can research ACPI calls or whatever it may take to do this? I'm not quite sure where to begin.

Thanks,
Michael

On Mon, Jul 16, 2012 at 11:48 AM, Bruno Pagani <bruno.n.pag...@gmail.com> wrote:
AFAIK dual nVidia is not supported, only Intel + nVidia, whatever it is, Optimus or Hybrid SLI.

Sorry... But maybe you could see some changes next year with PRIME hitting all distros.

Bruno Pagani, a.k.a. ArchangeGabriel

Le 16 juil. 2012 à 00:09, Michael Rodríguez-Torrent <mrtorr...@gmail.com> a écrit :

Hi folks, I'm having trouble using Bumblebee with my laptop's graphics and haven't been able to track down much information. Can anyone point me in the right direction?

Here are the details on my laptop:

Dell Studio XPS 13 (aka 1340)
Intel Core 2 Duo P8600 processor
Nvidia MCP79 motherboard
Nvidia 9500M GE Hybrid SLI graphics (http://www.notebookcheck.net/NVIDIA-GeForce-9500M-GE-Hybrid-SLI.14029.0.html)
 - Integrated: GeForce 9400M G (http://www.notebookcheck.net/NVIDIA-GeForce-9400M-G.11949.0.html)
 - Dedicated: Nvidia GeForce 9200M GS (http://www.notebookcheck.net/NVIDIA-GeForce-9200M-GS.9453.0.html)

I am able to use the integrated graphics card without a problem using Nvidia's proprietary driver. However, when I install bumblebee and bumblebee-nvidia via the PPA as directed (https://wiki.ubuntu.com/Bumblebee), for some reason X runs with the Nouveau driver instead. When I try to run the bumblebee daemon, it exits with the message "No Optimus system detected."

I've tried explicitly setting the driver to nvidia in bumblebee.conf, but no joy. Is there some configuration that I'm missing? Anything else I can try?

Obviously, the error message is accurate -- I don't have Optimus -- but the Bumblebee wiki says it supports "legacy nVidia hybrid graphics" (https://github.com/Bumblebee-Project/Bumblebee/wiki/), and a mailing list post refers to it working with Hybrid SLI on an Asus machine (https://lists.launchpad.net/asus-ul30/msg00453.html).

On the other hand, a post on this mailing list a few months ago about the 1340 (https://lists.launchpad.net/hybrid-graphics-linux/msg02223.html) didn't receive much response, and this model is listed on the Bumblebee wiki as a "weird machine" (https://github.com/Bumblebee-Project/Bumblebee/wiki/Weird-machines).

That wiki entry was created six months ago, however, prior to the new version of Bumblebee. In addition, the ACPI call for disabling the discrete card on this model is known (http://luizfar.wordpress.com/2010/06/29/how-to-switch-off-xps1340-discrete-video-card-on-linux/) and the DSDT/ACPI details have been available for some time (https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/312756/comments/17). So, it seems like it would be odd if Bumblebee didn't at least have the ability to turn off the card via an ACPI call.

Any help welcome!

Thank you,
Michael
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