OpenGL won't work, "Couldn't set GL mode:"

SDL Development
1

OpenGL won’t work, whenever I run testgl it says “Couldn’t set GL
mode:” and when I try to set it in ZSNES it freezes for 10 seconds and
goes back to the old mode. gltron compiled but crashes my system when
I run it. heroes works just fine. I’m not sure what video card I’ve
got. I think it’s a nVidia card. I noticed in the code for testgl that
it’s supposed to print a reason for the error after “Couldn’t set GL
mode:” but it doesn’t. I’m using slackware linux. Any ideas?

Uru2 (sometimes just Uru)
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2

First, the below is what we see when you use HTML mail, correct that and people
might be able to help, but chances are, you’re on the wrong list, you need the
zsnes-devel list not the sdl-devel listOn Sun, Nov 11, 2001 at 04:53:48PM -0500, Clinton Nolan wrote:

3
  • Clinton Nolan on Sun, Nov 11, 2001:
      OpenGL won't work, whenever I run testgl it says "Couldn't
      set GL
      mode:" and when I try to set it in ZSNES it freezes for 10
      seconds and
      goes back to the old mode. gltron compiled but crashes my
      system when
      I run it. heroes works just fine. I'm not sure what video
      card I've
      got. I think it's a nVidia card. I noticed in the code for
      testgl that
      it's supposed to print a reason for the error after
      "Couldn't set GL
      mode:" but it doesn't. I'm using slackware linux. Any
      ideas?

First and foremost you need to identify your video card. If it is a
nvidia, goto nvidia’s website and grab the latest kernel and GLX drivers.

The FAQ/README on that site has more than enough info to get you going.

M. R.
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4
  • EvilTypeGuy on Sun, Nov 11, 2001:

First, the below is what we see when you use HTML mail, correct that and people
might be able to help, but chances are, you’re on the wrong list, you need the
zsnes-devel list not the sdl-devel list

Two things:

  • Instead of griping about HTML mail (it will never die folks, no use
    complaining about it), you can opt to fix your broken MUA. It looks like
    you’re using Mutt, so you can add this to your .mailcap:
    text/html; lynx -force_html %s; needsterminal;
    And/or this to your .muttrc:
    auto_view text/html

  • Every problem he listed was exhibited by a SDL application, including
    ZSNES, so yeah, he’s on the right list, but it may be the standard “my
    nvidia card doesn’t do OpenGL right” FAQ. I don’t know if ZSNES uses
    OpenGL (I don’t see why it would), so it may not be so easy to diagnose
    ;).

M. R.
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5

nvidia card doesn’t do OpenGL right" FAQ. I don’t know if ZSNES uses
OpenGL (I don’t see why it would), so it may not be so easy to diagnose
;).

Zsnes uses OpenGL, indeed. It uses it for h/w scaling.

Petri Latvala

6

Not a chance in hell. If I can’t read a message, I can’t quote it for
reply. If I can do neither, it gets deleted without opening.On Mon, Nov 12, 2001 at 01:01:50AM -0600, M. R. Brown wrote:

  • Instead of griping about HTML mail (it will never die folks, no use
    complaining about it), you can opt to fix your broken MUA. It looks like
    you’re using Mutt, so you can add this to your .mailcap:
    text/html; lynx -force_html %s; needsterminal;
    And/or this to your .muttrc:
    auto_view text/html

–
Joseph Carter Free software developer

  • |Rain| prepares for polygon soup
    <|Rain|> sweet merciful crap, it works?
  • |Rain| faints

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