[comp.sys.3b1] problems with my 7300

elliston@av8tr.UUCP (Keith Elliston) (03/15/91)

I need some help diagnosing the problems with my UnixPC...

I have had it crash a couple of times lately, and after resetting it 
has always come back up.  I noticed that it seemed to crash when I moved the
mouse, so I quit moving the mouse (I don't use UA).  This morning I came in,
and it was crashed again, so I reset it, and got the following panic message:

Panic trap vector 11
type = 0xB, pid = 87, pc = 0x14C44, rps = 0x200E, p = 0x4A500
GSR = DD00, BSR0 = FC43, BSR1 = 0, PHYSPF = 30
D0 = FFFF, D1 = 1, D2 = 0, D3 = 70005
D4 = FFFFFC43, D6 = DD00, D7 = 430000
A0 = 1ED84, A1 = 1D87D, A2 = 1D82B, A3 = 49244
A4 = 708B8, A5 = 3000, A6 = 70801, A7 = 2FFB84

panic trap.

I reset her again, and got this panic message....

#HDERR ST:51 EF:40 CL:FF63 CH:FF00 SN:FF01 SC:FF03 SDH:FF27 DMACNT:FFFF
DCRREG:97 MCRREG:8B00

She then booted normally on the third try.  I am currently running unix
version 3.51, with the 3.51 development set.  I have 512 on the motherboard,
with 1.5 expansion memory (2 0.5's plus a 0.5 combo).  I am also running 
the HDB uucp from TheStore.  I am also running a Seagate st4096 in an external
box (not on the pc power supply) with about 67 Mb of disk.  

I am not a hardware hacker, and am not very good with unix as yet (I work
mostly with VMS, and am only learning unix on my own time).  Any and all
help will be greatly appreciated.  

Thanks

Keith

ps.  Try emailing me at elliston@mbcl.rutgers.edu if uunet!av8tr!elliston
fails...


-- 
Keith O. Elliston          elliston@av8tr.UUCP           elliston@msdrl.com
AA5A N9734U                elliston@mbcl.rutgers.edu     elliston@biovax.bitnet
"Beware of pseudo-experts with a mission and a grudge, especially if they are
 lawyers pretending to be scientists." -- H.W. Lewis in 'Technological Risk'

rmfowler@texrex.uucp (Rex Fowler) (03/21/91)

In article <637@av8tr.UUCP> elliston@av8tr.UUCP (Keith Elliston) writes:
>I need some help diagnosing the problems with my UnixPC...
>
>I have had it crash a couple of times lately, and after resetting it 
>has always come back up.  I noticed that it seemed to crash when I moved the
>mouse, so I quit moving the mouse (I don't use UA).  This morning I came in,
>and it was crashed again, so I reset it, and got the following panic message:
>
>Panic trap vector 11
>type = 0xB, pid = 87, pc = 0x14C44, rps = 0x200E, p = 0x4A500
>GSR = DD00, BSR0 = FC43, BSR1 = 0, PHYSPF = 30
>D0 = FFFF, D1 = 1, D2 = 0, D3 = 70005
>D4 = FFFFFC43, D6 = DD00, D7 = 430000
>A0 = 1ED84, A1 = 1D87D, A2 = 1D82B, A3 = 49244
>A4 = 708B8, A5 = 3000, A6 = 70801, A7 = 2FFB84
>
>panic trap.
>
 
Boy, that looks familiar..

try shutting down the system and unplugging and replugging all of the 
keyboard connections (both ends) and the mouse.  

I struggled with a similar situation as you for 6 months.  I tried
everything possible to debug the problem.  A few times I even thought
I had fixed it but the crashes resumed shortly.

I tried:

1) boosting the power supply up a little
2) removing non-used loadable drivers
3) completely removing the mouse
4) re-arranging order of loadable drivers
5) reseating all of the socketed chips
6) blowing out dust-bunnies
7) many other minor suggestions from other unix-pc'ers
8) and now, unplugging & replugging in the keyboard at both ends while
   the machine is shutdown.

And the strangest thing is, almost everyone of these changes led me to 
believe that the problem was solved.  For instance, when I unplugged the 
mouse, my machine remained running for 7 days but then resumed the frequent
crashes.  When I removed an un-used loadable driver the system stayed up
for 3-4 days before the crashes resumed.  The funny thing is that after
everytime I though it was fixed, I posted an article telling everyone that
I had solved my problems.  Then I had to followup and tell everyone that I
was wrong once again.

So, after 17 days of uptime, I am relunctant to post this because I will
probably just jinx myself again.  Oh well, here it goes...

>
>-- 
>Keith O. Elliston          elliston@av8tr.UUCP           elliston@msdrl.com
>AA5A N9734U                elliston@mbcl.rutgers.edu     elliston@biovax.bitnet
>"Beware of pseudo-experts with a mission and a grudge, especially if they are
> lawyers pretending to be scientists." -- H.W. Lewis in 'Technological Risk'


-- 
Rex Fowler <rmfowler%texrex@cirr.com>
UUCP:  egsner!texrex!rmfowler