I am currently travelling, so responses can be slow. > cat /sys/devices/platform/acer-wmi/interface: > WMID > Thanks, so that rules out the other interfaces.
> How to test which sysfs interface is working? i'll download a liveCD and > try... > When, using the Intrepid liveCD, brightness control works from the GUI, try to echo values into the /sys/.../acer-wmi/brightness file. If that changes the screen brightness as well, then this proves that the acpi wmi interface has broken at least for these acer laptops. -- Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/333386 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs