[rescue] A Sick T2000

[Jonathan Katz]

Hi everyone!

A while ago (3 years ago) I purchased a T2000 as "condition unknown."
I finally got around to playing with it.

It has one bad DIMM that I must replace. So, does anyone have a 1G
DIMM for this? POST finds it and halves the available RAM to 8G from
16G. I did move the DIMM to a different bank and the error followed
the DIMM, so the bank or MMU isn't bad, thankfully.

I am trying to boot a copy of Solaris 11.3 (which runs fine on the
T5140 I have; I used the same media to install that system) and it
gives me a kernel panic. Google is coming up empty and I'm not seeing
any media errors errors. Here's the panic for grins:

root on /ramdisk-root:a fstype ufs
panic[cpu0]/thread=20012000: BAD TRAP: type=31 rp=2000e9d0 addr=2
mmu_fsr=0 occurred in module "pxvec" due to a NULL pointer dereference
: trap type = 0x31
addr=0x2
pid=0, pc=0x1236e224, sp=0x2000e271, tstate=0x80001607, context=0x0
g1-g7: 20122c00, 1, 20012000, 60400, 0, 1c, 20012000

A "break" will recover it to the "ok" prompt and I can reboot, etc.

Trying with OpenBSD 6.9 (which also worked flawlessly on the T5140) I
got some I/O Timeout errors from the bootloader (pre-kernel), but then
the kernel mostly boots and seems to hang:
softraid0 at root
scsibus2 at softraid0: 256 targets

Here, I send a break and the OS/system seems hard-locked and I cannot
get to the "ok" prompt. (SC is still accessible.)

Any ideas as to what's up? Is the entire system freaking out over not
having RAM available? Is the DVD drive boogered atop everything else?

Thank you!