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Subject: 
Re: LDGLite Linux install question
Newsgroups: 
lugnet.cad.dev
Date: 
Tue, 17 Jun 2003 23:30:22 GMT
Viewed: 
1788 times
  
In lugnet.cad.dev, Orion Pobursky wrote:
In lugnet.cad.dev, Don Heyse wrote:
In lugnet.cad.dev, Orion Pobursky wrote:
I was kinda hopeing that this problem was a problem with my
Linux install and not hardware.  Oh well...
Thanks for the effort.

Wait a minute!  You're not done yet.  I poked through the MESA code
(common_x86.c) and realized something.  The SIGFPE is normally caught
by the exception handlers in MESA but in gdb the program stops anyhow.
You need to tell gdb to continue to get to the real problem, the
SIGSEGV, which is might not be a problem with your hardware.

  gdb ldglite
  run
    (hit the SIGFPE)
  cont
    (hit the SIGSEGV)
  backtrace

Don

Ok, here's the output:

(gdb) run
Starting program: /usr/local/bin/ldglite

Program received signal SIGFPE, Arithmetic exception.
0x0816ce13 in _mesa_test_os_sse_exception_support ()
(gdb) cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x40264843 in xmesa_register_swrast_functions () from /usr/lib/libGL.so.1
(gdb) backtrace
#0  0x40264843 in xmesa_register_swrast_functions () from /usr/lib/libGL.so.1
#1  0x40262127 in XMesaCreateContext () from /usr/lib/libGL.so.1

Well, that's discouraging.  It's still happening inside the Mesa
startup code.

Here's a link to what looks like a bug report from over year ago
which seems to indicate it might be an out of memory error.  But I
don't see any evidence of a workaround, and they don't seem all that
convinced they really know what the problem is.

  http://www.nevrax.org/pipermail/nel/2002-February/000975.html

Meanwhile I built just built Mesa 5.0.1 and tried it on a much more
primitive PC than yours and it worked.  I'm not sure what to try next.

Don



Message has 1 Reply:
  Re: LDGLite Linux install question
 
(...) Hmmm, how about trying the packages actually "blessed" by your distribution. According to this page: (URL) might be possible to build Opengl programs with these two packages. 14 May 2003 RPM mesaglu-devel 5.0 (i586) 1433 kB Patch-RPM (...) (21 years ago, 18-Jun-03, to lugnet.cad.dev)

Message is in Reply To:
  Re: LDGLite Linux install question
 
(...) Ok, here's the output: (gdb) run Starting program: /usr/local/bin/ldglite Program received signal SIGFPE, Arithmetic exception. 0x0816ce13 in _mesa_test_os_sse_ex...on_support () (gdb) cont Continuing. Program received signal SIGSEGV, (...) (21 years ago, 17-Jun-03, to lugnet.cad.dev)

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