My personal experience regarding this bug and the lid closed detection bug (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/986724) is as follows. I am using:
-Samsung NP900X4C -Kubuntu 12.04.2 -Kernel 3.9.0-030900-generic (was recently using the stock 3.2.0-49-generic) -BIOS P08ABK which is just a few days old (was recently using the shipped BIOS P07ABK) -acpid-2.0.10 1) With my old configuration (kernel and BIOS), the lid closed and AC plug/unplug events were not detected as usual. 2) Updating the kernel to 3.9.0 didn't change anything. 3) Upon updating the BIOS to P08ABK and booting for the first time into Kubuntu, the plug in/out events were both detected correctly. To my surprise, the keyboard backlight started to automatically adjust itself according to the ambient light, which is a very cool feature :). However, the lid close event was still not detected. 4) After only one suspend/resume and then restart, all of the problems resume like nothing happened, this means no lid close detection, AC plug/unplug detection or keyboard backlight adjustment. 5) I boot into a win8 bootable USB where plug/unplug are detected but lid close is not detected similar to Kubuntu; there is no keyboard backlight adjustment as well (I deleted my win8 partition along with all other useless recovery/boot partitions that took up 30 GB standing idle). 6) Booting back into Kubuntu, everything is as usual, no lid/plug events detected and backlight stays off. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/971061 Title: acpi reports battery state incorrectly To manage notifications about this bug go to: https://bugs.launchpad.net/acpi/+bug/971061/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
