My HP Compaq 6510b suffers from this issue as well. When the lid is closed, kernel error occurs: BUG: Unable to handle kernel NULL pointer dereference, which can be seen when switched to the console (ie Ctrl+Alt+F1).
I'm using kernel 2.6.22-14-generic, video driver "intel" (as seen in the attached xorg.conf). Executing echo 1 > /proc/acpi/video/*/DOS doesn't do the trick for me, the freeze occurs again. ** Attachment added: "debug.tar" http://launchpadlibrarian.net/13612421/debug.tar -- laptop get freeze when inactive. https://bugs.launchpad.net/bugs/151607 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