Thanks for the tip; here are some errors that appear after the screen goes off (the timeout is 10 minutes)
Oct 25 22:34:10 alessio-laptop udev-configure-printer: Failed to get parent Oct 25 22:34:26 alessio-laptop dbus[878]: [system] Reloaded configuration Oct 25 22:35:37 dbus[878]: last message repeated 6 times Oct 25 22:45:14 alessio-laptop kernel: [ 1893.203921] ACPI Error: Result stack is empty! State=d9859c00 (20110413/dswstate-98) Oct 25 22:45:14 alessio-laptop kernel: [ 1893.203934] ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110413/dsutils-646) Oct 25 22:45:14 alessio-laptop kernel: [ 1893.203942] ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 1 (20110413/dsutils-763) Oct 25 22:45:14 alessio-laptop kernel: [ 1893.203951] ACPI Error: Method parse/execution failed [\_SB_.PCI0.VGA_.UPBL] (Node f4428e40), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:14 alessio-laptop kernel: [ 1893.203967] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_._Q0F] (Node f442d270), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:15 alessio-laptop kernel: [ 1893.970634] ACPI Error: Result stack is empty! State=d9858800 (20110413/dswstate-98) Oct 25 22:45:15 alessio-laptop kernel: [ 1893.970647] ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110413/dsutils-646) Oct 25 22:45:15 alessio-laptop kernel: [ 1893.970655] ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 1 (20110413/dsutils-763) Oct 25 22:45:15 alessio-laptop kernel: [ 1893.970665] ACPI Error: Method parse/execution failed [\_SB_.PCI0.VGA_.UPBL] (Node f4428e40), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:15 alessio-laptop kernel: [ 1893.970680] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_._Q0F] (Node f442d270), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.231842] ACPI Error: Result stack is empty! State=d9858800 (20110413/dswstate-98) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.231854] ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110413/dsutils-646) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.231862] ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 1 (20110413/dsutils-763) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.231871] ACPI Error: Method parse/execution failed [\_SB_.PCI0.VGA_.UPBL] (Node f4428e40), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.231887] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_._Q0F] (Node f442d270), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.269182] ACPI Error: Result stack is empty! State=ed03dc00 (20110413/dswstate-98) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.269192] ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110413/dsutils-646) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.269196] ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 1 (20110413/dsutils-763) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.269201] ACPI Error: Method parse/execution failed [\_SB_.PCI0.VGA_.UPBL] (Node f4428e40), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) Oct 25 22:45:15 alessio-laptop kernel: [ 1894.269210] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_._Q0F] (Node f442d270), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/844241 Title: Backlight not restored when moving the mouse To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/844241/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
