OpenGL screensavers freeze

Romeyn Prescott prescor at
Sun Nov 21 12:04:05 UTC 2004

At 1:25 AM -0500 11/21/04, volvoguy scribbled:
>On Sat, 20 Nov 2004 19:08:01 -0500, Romeyn Prescott
><prescor at> wrote:
>>  I have found that when I select certain screensaver modules, the
>>  entire computer freezes up.  I haven't found this documented
>>  anywhere.  Have I "discovered" something?  What more detailed info
>>  can I provide?
>My Mac is significantly older, but the answer might be the same. For
>most of the OpenGL (or 3D in general) funtionality, the binary video
>card drivers from the manufacturers need to be used - and, well, they
>don't exist for the Mac platform that I'm aware of.
>You may have something slightly different going on though, because
>with my G3 iMac (333Mhz) and video card with 2Mb of VRAM (can't
>remember the make ATM), the OpenGL stuff will technically work, but
>work at unusable speeds. It can take 20-30 seconds to "wake up" from
>running an OpenGL screensaver.

Well, this is an ATI card.  I don't know all the specs, but the 
Matrix screensaver runs just fine.  Fairly zippy and wakes up in no 
time.  But some of the others just lock up solid.  I can't get a VT 
or anything.


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