[rescue] Sparcstation 20 - Dude, we're getting the band back together!
velociraptor at gmail.com
Sat Sep 5 11:09:45 CDT 2009
On Aug 26, 2009, at 9:33 AM, Sanford Barton wrote:
> Guys, I've been having a blast (sorta), refurbishing an old
> Sparcstation 20.
Nice, old school system.
> 1.) I'm taxing the SuperSparcs in such a way with the newer software
> that they will never be stable in this system.
> 2.) I have a batch of bad processor modules.
> 3.) The CG14 bits are being pushed beyond their limits with the
> SuperSparcs, especially now that it's not using much acceleration for
> 2D (speculation). If so, why not the same behavior with the ROSS
> processors? Perhaps they are not able to feed/stress the
> memory/graphics controller they way the SuperSparcs are?
> 4.) Not a heat or component stress issue at all, but some sort of
> multitasking, OS, or cache/memory controller bug.
> Any ideas, experiences, hope, discouragement, anything??
I'd suggest testing headless. E.g. Use a remote X session running
your browser and try your lock-up trick. This will at least narrow it
down to OS bugs vs graphics sub-system.
If it is stable w/out the graphics, I'd grab Sun VTS (if possible--it
requires a contract to download) and see what is in there for stress-
testing the graphic subsystem. Maybe you have something marginal in
there? Maybe try to track down a later HW rev of your graphics card?
More information about the rescue