Swâmi Petaramesh, thank you for reporting this and helping make Ubuntu better. Please answer the following questions: + When you remove kernel parameter "acpi_backlight=vendor", what is the results of executing at the Terminal: ls /sys/class/backlight
+ With "acpi_backlight=vendor" added, what is the result of executing at the Terminal: ls /sys/class/backlight + If you boot with kernel parameter acpi_osi="Linux" can you change your backlight? + Could you please test the latest upstream kernel available? It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results. Thanks in advance. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/971750 Title: [Precise] Toshiba L735-101 screen brightness cannot be set using hotkeys To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/971750/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
