Follow up to problem with 32 MB SIMMs on UDB (Repost)

Joshua M. Thompson (invid@optera.com)
Thu, 7 Nov 1996 15:53:30 -0500 (EST)

Not sure if this ever got out the first time since I never got a copy
back; also I'm posting it to linux-kernel as well. I'm also _desperate_ to
figure out what's going on here.

For those who didn't see my original post; my DEC Universal Desktop Box
will not work correctly with 32 MB SIMMs installed (either two or four of
them). Changing motherboards and SIMMs does not help.

Today I managed to actually get some of the error messages logged. They're
quite interesting. At first I thought it might be the Adaptec 2940 card,
so I took that out of the system. Unfortunately the errors still occured.

Just for kicks today I tried changing out the entire machine (well except
for the four 32 MB SIMMs, which I don't have spares for off hand). Same
result. Finally I gave up and put the machine back up with four 8 MB
SIMMs, and it's been perfectly stable ever since (Albeit quite slow -- a
32 meg news server just isn't a good idea).

Anyway, here is a short dump of the logs (the full log goes on hundreds
of lines with the same error over and over). Maybe some gurus out there
can make sense of this:

Nov 5 19:26:55 server5 kernel: lca: machine check (la=0xfffffc00002084d0,pc=0xfffffc0000448e8c)
Nov 5 19:26:55 server5 kernel: Reason: access to non-existent memory (long frame):
Nov 5 19:26:55 server5 kernel: reason: 1 exc_addr: fffffc0000448e8c dc_stat: 7
Nov 5 19:26:55 server5 kernel: car: ffffffffe0201141
Nov 5 19:26:55 server5 kernel: CPU initiated PCI Memory Write cycle to address 79a9c34 failed due to no device.
Nov 5 19:26:55 server5 kernel: Other PCI errors occurred simultaneously.
Nov 5 19:26:55 server5 kernel: + 0 0000000000000198 0000019800000110
Nov 5 19:26:55 server5 kernel: + 10 0000000100000084 0000000000000001
Nov 5 19:26:55 server5 kernel: + 20 000006f800000000 0000000000000013
Nov 5 19:26:55 server5 kernel: + 30 0000000000000000 fffffc00002084d0
Nov 5 19:26:55 server5 kernel: + 40 cccccccccccccccd 0000000000000000
Nov 5 19:26:55 server5 kernel: + 50 0000000000000008 0000000000000000
Nov 5 19:26:55 server5 kernel: + 60 fffffc00003110a0 0000000000010000
Nov 5 19:26:55 server5 kernel: + 70 fffffc0000311190 fffffc0000311128
Nov 5 19:26:55 server5 kernel: + 80 fffffc00003114a0 fffffc00003116a8
Nov 5 19:26:55 server5 kernel: + 90 fffffc00003111f8 fffffc0000208000
Nov 5 19:26:55 server5 kernel: + a0 000000011ffffc00 fffffc00071259f0
Nov 5 19:26:55 server5 kernel: + b0 fffffc000049b198 000000000000fff1
Nov 5 19:26:55 server5 kernel: + c0 0032323a3a3e3e3e 0000000000000000
Nov 5 19:26:55 server5 kernel: + d0 0000000000000000 0000000000000001
Nov 5 19:26:55 server5 kernel: + e0 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: + f0 0000000007188000 fffffffe00000000
Nov 5 19:26:55 server5 kernel: + 100 0000000000200000 000000000723b370
Nov 5 19:26:55 server5 kernel: + 110 fffffc0000448e8c 0000000000000000
Nov 5 19:26:55 server5 kernel: + 120 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: + 130 0000000000200000 0000000000001c70
Nov 5 19:26:55 server5 kernel: + 140 0000000000000022 0000000000005200
Nov 5 19:26:55 server5 kernel: + 150 0000000000000007 00000007ffffffff
Nov 5 19:26:55 server5 kernel: + 160 0000000000000428 67b0d8e800000000
Nov 5 19:26:55 server5 kernel: + 170 0000000000000071 ffffffffe0201141
Nov 5 19:26:55 server5 kernel: + 180 079a8137079a8137 079a9c34079a9c34
Nov 5 19:26:55 server5 kernel: + 190 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: lca: machine check (la=0xfffffc00002084d0,pc=0xfffffc0000448e8c)
Nov 5 19:26:55 server5 kernel: Reason: access to non-existent memory (long frame):
Nov 5 19:26:55 server5 kernel: reason: 1 exc_addr: fffffc0000448e8c dc_stat: f
Nov 5 19:26:55 server5 kernel: car: ffffffff85c41141
Nov 5 19:26:55 server5 kernel: CPU initiated PCI Memory Write cycle to address 79a9c34 failed due to no device.
Nov 5 19:26:55 server5 kernel: Other PCI errors occurred simultaneously.
Nov 5 19:26:55 server5 kernel: + 0 0000000000000198 0000019800000110
Nov 5 19:26:55 server5 kernel: + 10 0000000100000084 0000000000000001
Nov 5 19:26:55 server5 kernel: + 20 000006f800000000 0000000000000013
Nov 5 19:26:55 server5 kernel: + 30 0000000000000000 fffffc00002084d0
Nov 5 19:26:55 server5 kernel: + 40 cccccccccccccccd 0000000000000000
Nov 5 19:26:55 server5 kernel: + 50 0000000000000008 0000000000000000
Nov 5 19:26:55 server5 kernel: + 60 fffffc00003110a0 0000000000010000
Nov 5 19:26:55 server5 kernel: + 70 fffffc0000311190 fffffc0000311128
Nov 5 19:26:55 server5 kernel: + 80 fffffc00003114a0 fffffc00003116a8
Nov 5 19:26:55 server5 kernel: + 90 fffffc00003111f8 fffffc0000208000
Nov 5 19:26:55 server5 kernel: + a0 000000011ffffc00 fffffc00071259f0
Nov 5 19:26:55 server5 kernel: + b0 fffffc000049b198 000000000000fff1
Nov 5 19:26:55 server5 kernel: + c0 0032323a3a3e3e3e 0000000000000000
Nov 5 19:26:55 server5 kernel: + d0 0000000000000000 0000000000000001
Nov 5 19:26:55 server5 kernel: + e0 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: + f0 0000000007188000 fffffffe00000000
Nov 5 19:26:55 server5 kernel: + 100 0000000000200000 000000000723b370
Nov 5 19:26:55 server5 kernel: + 110 fffffc0000448e8c 0000000000000000
Nov 5 19:26:55 server5 kernel: + 120 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: + 130 0000000000200000 0000000000001c70
Nov 5 19:26:55 server5 kernel: + 140 0000000000000022 0000000000005200
Nov 5 19:26:55 server5 kernel: + 150 000000000000000f 00000007ffffffff
Nov 5 19:26:55 server5 kernel: + 160 0000000000000428 67b0d8e800000000
Nov 5 19:26:55 server5 kernel: + 170 0000000000000071 ffffffff85c41141
Nov 5 19:26:55 server5 kernel: + 180 079a8137079a8137 079a9c34079a9c34
Nov 5 19:26:55 server5 kernel: + 190 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: lca: machine check (la=0xfffffc00002084d0,pc=0xfffffc0000448e8c)
Nov 5 19:26:55 server5 kernel: Reason: access to non-existent memory (long frame):
Nov 5 19:26:55 server5 kernel: reason: 1 exc_addr: fffffc0000448e8c dc_stat: f
Nov 5 19:26:55 server5 kernel: car: ffffffff85c41141
Nov 5 19:26:55 server5 kernel: CPU initiated PCI Memory Write cycle to address 79a9c38 failed due to no device.
Nov 5 19:26:55 server5 kernel: Other PCI errors occurred simultaneously.
Nov 5 19:26:55 server5 kernel: + 0 0000000000000198 0000019800000110
Nov 5 19:26:55 server5 kernel: + 10 0000000100000084 0000000000000001
Nov 5 19:26:55 server5 kernel: + 20 000006f800000000 0000000000000013
Nov 5 19:26:55 server5 kernel: + 30 0000000000000000 fffffc00002084d0
Nov 5 19:26:55 server5 kernel: + 40 cccccccccccccccd 0000000000000000
Nov 5 19:26:55 server5 kernel: + 50 0000000000000008 0000000000000000
Nov 5 19:26:55 server5 kernel: + 60 fffffc00003110a0 0000000000010000
Nov 5 19:26:55 server5 kernel: + 70 fffffc0000311190 fffffc0000311128
Nov 5 19:26:55 server5 kernel: + 80 fffffc00003114a0 fffffc00003116a8
Nov 5 19:26:55 server5 kernel: + 90 fffffc00003111f8 fffffc0000208000
Nov 5 19:26:55 server5 kernel: + a0 000000011ffffc00 fffffc00071259f0
Nov 5 19:26:55 server5 kernel: + b0 fffffc000049b198 000000000000fff1
Nov 5 19:26:55 server5 kernel: + c0 0032323a3a3e3e3e 0000000000000000
Nov 5 19:26:55 server5 kernel: + d0 0000000000000000 0000000000000001
Nov 5 19:26:55 server5 kernel: + e0 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: + f0 0000000007188000 fffffffe00000000
Nov 5 19:26:55 server5 kernel: + 100 0000000000200000 000000000723b370
Nov 5 19:26:55 server5 kernel: + 110 fffffc0000448e8c 0000000000000000
Nov 5 19:26:55 server5 kernel: + 120 0000000000000000 0000000000000000
Nov 5 19:26:55 server5 kernel: + 130 0000000000200000 0000000000001c70
Nov 5 19:26:55 server5 kernel: + 140 0000000000000022 0000000000005200
Nov 5 19:26:55 server5 kernel: + 150 000000000000000f 00000007ffffffff
Nov 5 19:26:55 server5 kernel: + 160 0000000000000428 67f0daf800000000
Nov 5 19:26:55 server5 kernel: + 170 0000000000000071 ffffffff85c41141
Nov 5 19:26:55 server5 kernel: + 180 079a8137079a8137 079a9c38079a9c38
Nov 5 19:26:55 server5 kernel: + 190 0000000000000000 0000000000000000

-- 
invid@optera.com             | We are Grey
http://www.optera.com/~invid | We stand between the Candle and the Star
                             | Between the Darkness and the Light

--
To unsubscribe: send e-mail to axp-list-request@redhat.com with
'unsubscribe' as the subject.  Do not send it to axp-list@redhat.com



Feedback | Store | News | Support | Product Errata | About Us | Linux Info | Search | JumpWords
No Frames | Show Frames

Copyright © 1995-1997 Red Hat Software. Legal notices