I downloaded the BIOS from here http://www.samsung.com/uk/support/model/NP900X3C-A02UK-downloads
it dates back to last spring. I am now in position to confirm that the kernel version (3.5 or 3.6) plays no role for the acpi problems we are discussing. Experimenting with 3.7 crashed and froze my laptop with a system error hinting to acpi which arose when I plugged in the acpi adapter for re-charging. Unfortunately I reacted instinctively and rebooted the laptop without recording the exact error message. After that independently of the kernel I tried (3.5.19 3.6.6 or 3.6.10) I was experiencing - broken charging/discharging state indicator - broken lid state indicator - broken keyboard backlit i.e.no backlit at all To restore the previous behavior I followed the advice of comment #35 of https://bugzilla.kernel.org/show_bug.cgi?id=44161 i.e. I manually reset the battery/BIOS Now I am running kernel v3.5.19 and everything works correctly again but only for a while I am afraid. In conclusion, upstream seems to have an understanding of the problem but prospects are not encouraging. Given the situation, at the moment I would not advice anybody to buy this laptop. -- 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/ubuntu/+source/acpi/+bug/971061/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
