On Mon, 22 September 2014 Linus Torvalds torvalds@linux-foundation.org wrote:
Adding proper people and mailing lists..
The PCI_CLASS_DISPLAY_VGA test goes back to the very beginning by BenH, and I have no idea if adding PCI_CLASS_DISPLAY_3D is appropriate, but hopefully somebody does. The fact that it makes things work certainly argues fairly convincingly for it, but I want some backup here.
Dave, BenH?
Christopher(?), can you please also specify which laptop etc. And the patch itself seems to have come from somebody else, unless you're Lekensteyn. So we'd want to get the provenance of that too.
More a question to Christopher, but what criteria is preventing the use of the NVIDIA GPU under this condition?
As far as I've seen on my (single-GPU) systems X requires the GPU to have boot_vga=1 sysfs attribute to accept autoconfiguration (though with two GPUs and optimus/switcheroo interaction between the GPUs may change the picture).
I've been looking at the open, nouveau side of things only. If NVIDIA closed driver has some other requirement, I don't know.
But as here the intention seems to be to use exclusively the NVIDIA GPU just leaving the IGD along it should require explicit X configuration which then does not care about boot_vga.
A more detailed description of what prevents operation with GPU not being added to vgaarb would certainly help understanding what happens, what is expected and where things differ.
Bruno
LinusOn Mon, Sep 22, 2014 at 1:28 PM, C Bergström cbergstrom@pathscale.com wrote:
Hi Linus,
I don't know who the original author is and I can have one of the distro graphics friends review it, but I need this patch below to get NVIDIA drivers to work (without using any Intel graphics) on my laptop http://pastebin.com/wpmFi38k
Sorry - I know this is not the proper way to submit a patch, but it's trivial and I'm not a kernel dev.
Thanks
./C