Neither /sys/class/leds, /sys/class/backlight have an entry related to acer-wmi. Specifically,
$ ls -l /sys/class/leds/ σύνολο 0 lrwxrwxrwx 1 root root 0 Φεβ 23 20:29 ath9k-phy0 -> ../../devices/pci0000:00/0000:00:06.0/0000:03:00.0/leds/ath9k-phy0 $ ls -l /sys/class/backlight/ σύνολο 0 lrwxrwxrwx 1 root root 0 Φεβ 23 20:29 acpi_video0 -> ../../devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 Even when I remove acer-wmi, those entries do not change. Some of the hotkeys of the laptop work, while other do not. There is no difference whether acer-wmi is loaded or not. a. Lock touchpad: does not work b. Mute/enable audio: works fine c. Decrease/Increase volue: works fine d. Decrease/Increase display brightness: it works, but it apparently is mixed with the "enable/disable screens" functionality. I have dual-head, and it changes the screen size or disables/enables the external display. e. External display shortcut: almost works f. hibernate shortcut: it invokes hibernation. Did not get the hibernation to work yet (might work) As the laptop has the AMD E450 CPU/GPU, I think it might not work with previous versions of Ubuntu. If there is more to be tested, I am happy to do so. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/938630 Title: Ubuntu loads acer-wmi on Sony laptop; WiFi not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/938630/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs