I just resolved this issue. The whole problem was caused by bios setting. There is a "Protect Audio Video Path Mode" option under chipset configuration. It was set at "Paranoid" and that was the cause of the problem. When that bios setting is set to "Disabled" or "Lite" the problem does not appear. Mesa DRI Intel(R) G45/G43 GEM 20090712 2009Q2 RC3 is successfully initialized, no erros or warnings at logs and the performance is perfect. See "What is PAVP (Protected Audio Video Path)?" paragraph at http://www.intel.com/support/graphics/sb/CS-029871.htm for more info about this option.
So the fix to this issue is this: * Reboot the pc * Press DEL to enter bios setup * Go to Advanced -> Chipset -> Northbridge and locate the option "Protect Audio Video Path Mode" * Set it to "Disabled" or "Light" * Save changes and boot. Can anyone more familiar with this bios options tell us what is the recommended setting for ubunutu? Disabled or Light (or maybe there is no difference). ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Invalid -- No DRM, high cpu usage by X on rendering and frequent X crashes on Intel(R) G45/G43 Integrated Graphics Chipset https://bugs.launchpad.net/bugs/472506 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs