Hi, Thanks for your feedback. I had a chat with somebody with some experience and he suggested it should be fixed in userspace, here: https://git.gnome.org/browse/gnome-settings-daemon/tree/plugins/power/gsd-backlight-linux.c
This is what he suggests (if the above is indeed what Ubuntu uses, because it is meant for Fedora): In the gsd_backlight_helper_get_best_backlight helper. It only looks at the type of backlight and not at the connection between the backlight interface and the connector. An option is, if the gsd_backlight_helper_get_type (devices, "firmware") and gsd_backlight_helper_get_type (devices, "platform") calls both are unsuccessful, then instead of using gsd_backlight_helper_get_type which simply returns the first matching one of the found backlights of type raw, do the following: Take $PATH as the variable to /sys/class/backlight/foo dir and check the content of $PATH/../enabled, it has to be "enabled", that way you can find out which backlight interface is connected to an LVDS interface that actually has a connected LCD. If no interface is found with: `cat $PATH/../enabled` == "enabled" then as a fallback, still return the first found interface. I tried to implement this, but just getting the development environment setup to develop and test took me so much time that I haven't gotten to it. Perhaps the above is easy to implement for someone with the proper setup. Please keep us informed, if I make progress I will post too (but that might take a while). cheers -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1683445 Title: E6430 brightness control not working To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1683445/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
