Messages in this thread | | | Date | Thu, 26 Nov 1998 00:04:38 -0700 (MST) | From | Walter Brisken <> | Subject | GUS sound / SMP problem |
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I am getting strange behaviour with my GUS when running under a 2.1.12x kernel but only when compiled for SMP.
I have tried kernels 2.1.126 through 2.1.129 and all give the following symptom: Under very light load no problem. When moderately loaded (nicing a couple of compute intensive jobs, or just starting x windows) it starts to develope a strange mechanical buzz sound on top of the playing music (ie with mpg123). Once this "mode" starts, it will usually not stop until I clost the sound application and restart it. I get the kernel message : "GUS Warning: PCM buffers out of sync" in the file gus_wave.c . Again, I get no problems, even when heavily loading the processor (except a few skips when the load gets way to high) on the uni-processor version of the same kernel. I have been compiling all sound as modules in both cases. Compiler was gcc 2.7.2.3 .
Hardware: Dual Pentium 166 MMX running on a TYAN TOMCAT III, 96 MBytes RAM Gravis Ultrasound (Classic variety)
I am guessing it is a simple problem with locking(or lack there of), but I don't understand enough about this driver to be of much help in the debugging.
-Walter Brisken (walterfb@nacho.princeton.edu)
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