I'm having this problem as well. It seems to almost be confined to the i915 chipset. I began noticing the error when I first installed ubuntu a few weeks ago. It didn't affect the performance at all, just a warning I saw on shutdown. This was on 3.0.12-generic (I can give you more specifics if I can get to my server which is at home and internet is down.). Same thing for 3.0.13-generic. Works, but there's that same error message.
When I updated to the latest ubuntu kernel (3.0.15-generic) I get the exact same errors and my system seems to keep restarting X. I have no available shells on Alt-F1, etc, just repeated error message that seems to peg the CPU. When the system did finally get stable (after 5 minutes or so) it was so sluggish as to be unusable. The CPU was probably pegged, but with no shell access I can't say for certain.
HTH. I'll provide more if needed. I'll try the echo command and see if it helps tonight.
I'm having this problem as well. It seems to almost be confined to the i915 chipset. I began noticing the error when I first installed ubuntu a few weeks ago. It didn't affect the performance at all, just a warning I saw on shutdown. This was on 3.0.12-generic (I can give you more specifics if I can get to my server which is at home and internet is down.). Same thing for 3.0.13-generic. Works, but there's that same error message.
When I updated to the latest ubuntu kernel (3.0.15-generic) I get the exact same errors and my system seems to keep restarting X. I have no available shells on Alt-F1, etc, just repeated error message that seems to peg the CPU. When the system did finally get stable (after 5 minutes or so) it was so sluggish as to be unusable. The CPU was probably pegged, but with no shell access I can't say for certain.
HTH. I'll provide more if needed. I'll try the echo command and see if it helps tonight.