i’m probably not the one who is gonna solve this for you [so i hope a
video guru jumps in here]…but, if it were my machine i would:
-
begin by closely looking at these to see if anyone, anywhere is having
radiant success running Linux on your hardware
https://www.google.com/search?q=linux+Fujitsu+Esprimo+P1500+“no+problem”+OR+“just+works” -
search the Fujitsu site and user forums for drivers of info/tips/etc
on running Linux, try
https://www.google.com/search?q=linux+site%3Afujitsu.com+Esprimo+P1500 -
look in the BIOS (no, i don’t know exactly what i would be looking
for–sorry…but, if i had [you had] changed anything in there [like
over-clocking, souping-up, etc] then i’d roll all of that back to default) -
look to the Fujitsu site to see if there is an updated BIOS, and
consider installing it (careful! BIOS installs MUST be done correctly or
your machine may become a brick) -
see if i could figure out why nomodeset doesn’t help (i think it
should…now, “Nomodeset” [as you typed in your reply] should not
work…so type carefully!) -
if nomodeset [typed correctly] does not help then follow the NEXT
ideas in this guide http://en.opensuse.org/SDB:Configuring_graphics_cards
if that guide doesn’t get you to a smile then i have no idea how to get
you there…so, follow it carefully and completely…
note, Fujitsu is fairly well know to make/sell hardware efficiently
tuned to run the Windows version the machine was shipped with, and
nothing else…
on the other hand: you bring up the possibility of heat being the
problem, and that just might be the problem [but i guess since it would
with 12.1 it might be a kernel problem]–when was the last time you
unplugged everything, opened the case and removed all the chicken bones,
rats nests and dust? carefully!! some folks buy cans of compressed air
designed for blowing out computer cases, take the machine outside and
blast away…personally i use a vacuum cleaner with a plastic fitting
on the end of the hose [don’t stick any metal in there] and suck the
dust out of the case, the cup heat sink and the power supply unit
good luck…let us know how you get along…(you may have to use 12.1 or
a different distro…or even Windows. if one wants to have Linux, one
should buy hardware known to work well with Linux)