X crashing at irregular occasions on SUN 3's

[Arturo Perez Ext.]

> schultz at mmm.serc.mmm.com (John C Schultz): 
> 
>>We have been suffering an intermmitent problem with diskless SUN 3's
>>crashing after coming out of xlock under X11R2 (SunOS 3.5).
>>...
>>the display will go black and no keyboard or mouse entry is allowed.  Even
>>L1-A does nothing.  Powering off and back on is the only cure....
> 

It turns out that there's a very (!) poor interaction between screenblank
and X.  Screenblank is started up by /etc/rc.local.

I don't know what the exact story is but the symptoms sound very similar
to yours:

	Machine sits around (bored) for a while (sometimes not)
	Machine's screen blanks out and nothing brings it back
	Reboot machine.

Actually, one thing that does bring it back is rlogin'ing in to the machine
as root and doing
	reset < /dev/console >& /dev/console
(assuming csh syntax).

However, if you kill screenblank the problem goes away; at least it does
here!


Arturo Perez
ComputerVision, a division of Prime
primerd!cvbnet!aperez