[6930] in testers
"unsupported visual" warnings on running Linux OpenGL apps on 9.4
daemon@ATHENA.MIT.EDU (Alex T Prengel)
Fri Apr 29 20:17:54 2005
Message-Id: <200504300017.j3U0Hfsv012441@prevert.mit.edu>
To: testers@MIT.EDU
cc: alexp@MIT.EDU
Date: Fri, 29 Apr 2005 20:17:41 -0400
From: Alex T Prengel <alexp@MIT.EDU>
On 9.4 Linux machines, running OpenGL applications (including
glxinfo) generates warnings:
libGL warning: 3D driver claims to not support visual 0x23
libGL warning: 3D driver claims to not support visual 0x24
libGL warning: 3D driver claims to not support visual 0x27
libGL warning: 3D driver claims to not support visual 0x28
libGL warning: 3D driver claims to not support visual 0x2b
libGL warning: 3D driver claims to not support visual 0x2c
libGL warning: 3D driver claims to not support visual 0x2f
libGL warning: 3D driver claims to not support visual 0x30
The applications seen to run anyway, but the warnings are distracting and
may cause user concern. They may also indicate that something is out of sync.
I Googled the error message and found a fair number of hits, but nothing I
found gives a clear indication of a cause (or a fix).
I noted that in the last section of glxinfo output:
visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x23 24 tc 0 24 0 r y . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0x24 24 tc 0 24 0 r . . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0x25 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x26 24 tc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x27 24 tc 0 24 0 r y . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0x28 24 tc 0 24 0 r . . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0x29 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x2a 24 tc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x2b 24 dc 0 24 0 r y . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0x2c 24 dc 0 24 0 r . . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0x2d 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x2e 24 dc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x2f 24 dc 0 24 0 r y . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0x30 24 dc 0 24 0 r . . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0x31 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x32 24 dc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
the "missing visuals" seem to correspond with 0 entries in the dp column;
th
On a 9.3 machine, the same visuals appear to have 0 entries in the same column,
leading one to believe that the same situation exists in 9.3 but the warnings
don't print out for some reason.
Alex
