Re: Two Nvidia cards, and black screen

[<han...@sa...>]

Hi,

I'm very happy to report that the Ubuntu 013_novtswitch and=20
018_sharevts_option patches
did the trick! Right now I have a dual-session setup running with an=20
Geforece 6600 PCI-E,
and a Radeon 7500 PCI. Both sessions work perfectly, and the=20
screenblanking has
dissapeared.

The patches were fairly easy to apply against the gentoo 6.8.2-r2 x.org=20
source tree. There
was only one trivial reject with the sharevts_option patch, which was=20
very easy to fix
manually.

Now I can't wait to get my Geforce 5200 PCI at the beginning of next=20
week, I have every
reason to be optimistic about it working just as well as the radeon 7500=20
(and even
if it wouldn't work, I can live with the radeon ;)).

So once again, thanks to everyone who has helped me here, and specifically =
to
Cedric for providing me with so many tips and ideas + the needed patches!

-Hans

>=20
>   $ DISPLAY=3D:0 glxinfo | grep OpenGL
>   OpenGL vendor string: NVIDIA Corporation
>   OpenGL renderer string: GeForce FX 5200/AGP/SSE2
>   OpenGL version string: 2.0.0 NVIDIA 76.67
>   OpenGL extensions:
>   $ DISPLAY=3D:1 glxinfo | grep OpenGL
>   OpenGL vendor string: NVIDIA Corporation
>   OpenGL renderer string: GeForce FX 5200/PCI/SSE2
>   OpenGL version string: 2.0.0 NVIDIA 76.67
>   OpenGL extensions:
>   $ glxgears=20
>   3773 frames in 5.0 seconds =3D 754.600 FPS
>   3798 frames in 5.0 seconds =3D 759.600 FPS
>=20
> I don't personally use the acceleration very heavily, so I've no idea
> if the glxgears number is impressive or not.  At least the
> acceleration seems to be enabled.  (The PCI card actually shows better
> numbers than the AGP card.  Odd.)
>=20
> I use S-video out only on the PCI card, but that works.  I believe I
> have tested the AGP card and found that to work as well, without being
> 100% sure.
>=20
> My only beef with the cards has been that I'm somehow unable to get
> DVI out to work properly on the PCI card, but I have no reason to
> suspect that this is caused by the multihead configuration.  (Nvidia
> claims to have fixed some 1600x1200 DVI issues in the latest drivers,
> but I haven't yet had the time to see if this makes any difference.)
>=20
> > And can you also confirm that without the -sharevts option, you have a=
=20
> > similar screen blanking problem then the one described by me? If yes, I=
=20
> > just might go get some new NVIDIA cards ;)
>=20
> Starting the second head X without the -sharevts option causes the
> primary head to blank/poweroff, image returns when second head is
> terminated.
>=20
> As C=E9dric Rivard says, the -sharevts-option is an extension found (at
> least) in the Ubuntu and Debian versions of X.org 6.8.2.  (Without
> this option, I believe you need the ruby kernel patches to get around
> precisely the problem seen above.)
>=20
>=20
> =09=09=09=09=09=09=09Arne.
>=20
>=20
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September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
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