The problem still exists with kernel 3.17.3 and seems to be fixed with 3.18-rc1 (where the system behaviour is the same as described further above for 3.18-rc4).
I have read the wiki articles about bisecting with git (and found all of this quite interesting) and also locally built one kernel version but then decided not to walk through the whole procedure. This is just a netbook which requires a lot of patience for running the builds, and I currently don't have a more powerful Ubuntu machine available for building the kernels. Also, there is the workaround with writing brightness values to the kernel's file system interface, so I can wait for 15.04. However, if pre-built kernel packages for the intermediate builds betwen 3.17.3 and 3.18-rc1 were available anywhere, I would try them. I would also be interested in learning about for what possible reasons the /sys/class/backlight interface works and why the hotkeys don't. Best Regards -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1392024 Title: Backlight control not working Dell Insprion Mini 10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1392024/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs