> As another datapoint, my main screen-&-keyboard is a SS20 with a cg14,
> and I've never had such problems.
> 
> Mind you, I do run a relatively old OS on it, but it does imply it's
> not a _hardware_ issue with the SS20+cg14 combination.

I think I started having problems about a year or so ago.  I assumed that
it was a hardware problem with my machine (maybe overheating - it had 2
processors, 4 SBUS cards and 2 disks).  It always seemed to die when using
X on the cg14, so I'd guessed that was at fault.  It's only recently that
I've acquired another machine with a cg14 and come to the conclusion that
it's software (the other machine also dies when I use X on the cg14).

I'll see if I can get a meaningful backtrace - I haven't bothered looking
that often, becuase they are usually something like (most recent):

  panic: kernel fault
  Begin traceback...
  0x0(0x1, 0x5375, 0xf0254df0, 0xf6dbfdf8, 0x0, 0xf0254df0) at 0xf0006254
  0xf0006254(0x0, 0x0, 0x40000, 0x0, 0x0, 0x0) at netbsd:sys_obreak+0xb4
  sys_obreak(0x0, 0xad0000, 0xf6dbff20, 0x0, 0xf6dbff28, 0x0) at netbsd:syscall+0xbc
  syscall(0x11, 0xf6dbffb0, 0x10505fb0, 0x1, 0x3b5c00, 0x0) at 0xf00064ec

or just nothing at all.

J

-- 
  My other computer also runs NetBSD    /        Sailing at Newbiggin
        http://www.netbsd.org/        /   http://www.newbigginsailingclub.org/