Hi :) On Mon, Jan 23, 2012 at 18:12, Graeme Russ <graeme.russ@gmail.com> wrote:
I managed to make the system more unstable as I trimmed the kernel and added debugging info. The symptoms were slightly different (graphic freezes rather than flashing screen)
Ouch.....debugging brings more bugs...that's nasty..
To isolate i915, I've installed a nVidia 8600GT from my old machine. Even though I blacklisted i915, it still loads, so I've done an 'rmmod i915' to force it out.
So far it all seems pretty stable
If possible, try to run one or more games like Doom and see how it goes... IIRC there's a mode in Doom to run kinda automated play but I forgot the name. Just enable as much feature as it can to pound your graphic card at highest resolution possible.
- I'll leave it powered on for a few days to make sure. I'm then going to buy an ATI 5450 (cheap and passively cooled) and see how that goes.
After a week of uptime, I'll switch back to the i915 driver and see what happens. If I get a hang, I'll get the i915 maintainer on board with my problem
I think the lack of any kernel messages is due to a hardware conflict which hard-locks the machine. Even the reset button does not respond.
Looks like you're already on the right debugging track. Keep us informed :) -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com