Hi Graeme :) On Fri, Jan 20, 2012 at 09:20, Graeme Russ <graeme.russ@xxxxxxxxx> wrote: > This may not be the best place to post this question, so please excuse... > > I have a brand new Intel i5 / z68 EUFI motherboard (ASRock Z68 Pro3 > Gen3) with 8GB RAM running Fedora 16 (64 bit) which is experiencing > lockups which send the video crazy (flashing screen) but there is > nothing appearing in /var/log/messages to indicate what is going wrong > (no oops). > > I'm sure it is graphics related. I thought of Cc'ing the i915 > maintainer (Keith Packard) but figured I should wait until I am sure > > I _think_ it might be power related as the hang never seems to occur > while I'm actively using the computer - Only after I have stopped for > a few minutes does it happen but not always. >From your description alone, I think it's still hard to pinpoint the root of the problem. So I guess we'll gonna play cat and mouse a bit here. First of all, IMHO you still need to do logging. Maybe, just maybe, the reason why you don't see anything suspicious in /var/log/messages because the lock is bad enough that prevents the error messages to be picked up. Try setting up netconsole (here is the clue: https://wiki.ubuntu.com/Kernel/Netconsole) or serial console (try reading http://linux.koolsolutions.com/2009/03/29/howto-redirecting-linux-console-output-over-serial-port-on-another-machine/). Hopefully it will catch suspicious message. You could also enable several verbose debugging message under "Kernel hacking" section during "make menuconfig". Hope it helps.... NB: You said if it actively used, it goes well? Sounds like dynamic CPU frequency adjustment bug.... -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
