[Bug 66281] DRI_PRIME=1 glxinfo crashes and causes session to restart

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https://bugzilla.kernel.org/show_bug.cgi?id=66281

Ilia Mirkin <imirkin@alum.mit.edu> changed:

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                 CC|                            |imirkin@alum.mit.edu

--- Comment #5 from Ilia Mirkin <imirkin@alum.mit.edu> ---
(In reply to Gaurav Shukla from comment #4)
> (c) How do I check that runtime pm and vga switcheroo are enabled in my
> kernel. (Sorry, but I am a newbie to Linux).

If you have your .config (which, depending on options, may be visible from
/proc/config.gz), you can look for

CONFIG_VGA_SWITCHEROO
CONFIG_PM_RUNTIME

Make sure both of those are set to 'y'. (This is only for optimus-type systems,
of which I'm assuming yours is one.)

> 
> (d) I cannot be sure about this as well. AFAIK, the nouveau module is built
> into the kernel. The modinfo result is as below:

xf86-video-nouveau is the xorg ddx which interacts with the kernel driver. In
some distros, for maximal confusion, it is called something else, like
xorg-xserver-video-nouveau or something like that (don't have the exact name,
sorry).

> Actually I am working on some OpenGL/GLSL projects, for which I need GLSL
> 4.3, which I believe is still not available in nouveau driver. I was looking
> forward to be able to install the latest NVIDIA drivers. Will mesa 10,2-rcl
> solve this issue? Can you please recommend any other solution.

Mesa 10.2 will support a few more extensions which are part of GL4+, but will
not provide all the features required to advertise GL 4.0 support (or GL 4.3,
obviously). You can see the general progress of things at
http://cgit.freedesktop.org/mesa/mesa/tree/docs/GL3.txt.

However it's rare to need ALL of the features available in GL 4.3, so chances
are you could restrict yourself to a lower, supported version + a few
extensions.

Also note that GK208, while covered by the nvc0 driver, has some extra-special
issues that the GK10x cards (and GF1xx cards) don't have. Hopefully they'll be
resolved semi-soon, but the hardware is not easily available.

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