SDL + GL + X + GeForce = lock

SDL Development
1

I have an nVidia GeForce 256 (Guillemont 3D Prophet DDR-DVI). I am
trying to use it with SDL GL. All of the OpenGL test programs lock up X
to the point that I have to reboot. This is under RedHat 6.1 with the
GeForce drivers from nVidia. At least one frame is always drawn before
the lock occurs. Sometimes, it stays up for a few seconds.

I highly doubt that this is SDL’s fault. It is probably just the fact
that nVidia’s current Linux support sucks. :slight_smile: However, non-SDL
programs do not have this problem. I am just curious to know if anyone
has any ideas.

Thanks.

-Kenton Varda

2

Newsgroups: loki.open-source.sdl

I have an nVidia GeForce 256 (Guillemont 3D Prophet DDR-DVI). I am
trying to use it with SDL GL. All of the OpenGL test programs lock up X
to the point that I have to reboot. This is under RedHat 6.1 with the
GeForce drivers from nVidia. At least one frame is always drawn before
the lock occurs. Sometimes, it stays up for a few seconds.

I highly doubt that this is SDL’s fault. It is probably just the fact
that nVidia’s current Linux support sucks. :slight_smile: However, non-SDL
programs do not have this problem. I am just curious to know if anyone
has any ideas.

Ehrmm… what version of SDL are you using? A problem was fixed with the SDL
GL version a while ago which caused locks under Utah-GLX, it might be the
same thing. If not, I’ll try to contact you on ICQ and we can do the wierd
debugging thing 'till we get a cause. :slight_smile:

-Kenton Varda

Nicholas

Nicholas Vining “While you’re out there struggling
vining at pacificcoast.net with your computer, I’m naked,
icq: 20872003 clueless, and feeling good!”
- Ratbert

----- Original Message -----
From: temporal@gauge3d.org (Kenton Varda)
To: sdl at lokigames.com
Date: Wednesday, April 05, 2000 3:23 PM
Subject: [SDL] SDL + GL + X + GeForce = lock

3

OK, a little more info:

I narrowed it down to the buffer swapping routine. The crash occurs
there. My guess is that nVidia’s drivers do not like the whole
dual-display thing. Unfortunately, it does not appear as if that can be
easily changed…

BTW, I am using v1.1.2 now, and the same thing also happenned with v1.1.1.

-Kenton Varda

Kenton Varda wrote:> I have an nVidia GeForce 256 (Guillemont 3D Prophet DDR-DVI). I am

trying to use it with SDL GL. All of the OpenGL test programs lock up X
to the point that I have to reboot. This is under RedHat 6.1 with the
GeForce drivers from nVidia. At least one frame is always drawn before
the lock occurs. Sometimes, it stays up for a few seconds.

I highly doubt that this is SDL’s fault. It is probably just the fact
that nVidia’s current Linux support sucks. :slight_smile: However, non-SDL
programs do not have this problem. I am just curious to know if anyone
has any ideas.

Thanks.

-Kenton Varda

4

Yup - the same here. I would guess it’s that stupid glx module from
nvidia that sux.

Is there anything I can do to help debugging?

/Thomas

Kenton Varda wrote:>

OK, a little more info:

I narrowed it down to the buffer swapping routine. The crash occurs
there. My guess is that nVidia’s drivers do not like the whole
dual-display thing. Unfortunately, it does not appear as if that can be
easily changed…

BTW, I am using v1.1.2 now, and the same thing also happenned with v1.1.1.

-Kenton Varda

Kenton Varda wrote:

I have an nVidia GeForce 256 (Guillemont 3D Prophet DDR-DVI). I am
trying to use it with SDL GL. All of the OpenGL test programs lock up X
to the point that I have to reboot. This is under RedHat 6.1 with the
GeForce drivers from nVidia. At least one frame is always drawn before
the lock occurs. Sometimes, it stays up for a few seconds.

I highly doubt that this is SDL’s fault. It is probably just the fact
that nVidia’s current Linux support sucks. :slight_smile: However, non-SDL
programs do not have this problem. I am just curious to know if anyone
has any ideas.

Thanks.

-Kenton Varda

5

Thomas Lund wrote:

Yup - the same here. I would guess it’s that stupid glx module from
nvidia that sux.

I know of one person having no problems with Unreal Tournament and his
Geforce with latest GLX.–
Daniel Vogel My opinions may have changed,
666 @ http://grafzahl.de but not the fact that I am right

6

Wow - I haven’t heard of a single one.

This is a little off topic, but could you have him post some stats? X
server version and so on.

Every time I try to use it with any GL program, it crashes after 1-3
frames and locks my Xserver. Running in 2D is no problem at all. I have
not tried it with any commercial product yet, since the card is rather
new in my machine.

But I have gotten so desperate that I have bought an old Voodoo card for
3D.

/Thomas

Daniel Vogel wrote:>

Thomas Lund wrote:

Yup - the same here. I would guess it’s that stupid glx module from
nvidia that sux.

I know of one person having no problems with Unreal Tournament and his
Geforce with latest GLX.

–
Daniel Vogel My opinions may have changed,
666 @ http://grafzahl.de but not the fact that I am right

7

Thomas Lund wrote:

Wow - I haven’t heard of a single one.

This is a little off topic, but could you have him post some stats? X
server version and so on.

mail him at “Jeroen Janssen” –
Daniel Vogel My opinions may have changed,
666 @ http://grafzahl.de but not the fact that I am right