In some discussions I read that it should be possible to set the brightness via /proc/acpi/video/VID/LCD/brightness, but this seems not to be supported:
cat /proc/acpi/video/VID/LCD/brightness <not supported> Again, I can change the brightness via the FN-keys - only changing by software doesn't work - and any program trying to change the brightness hangs with an error message: Warning: in getBrightness(): org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. -- Cannot control brightness / backlight of Dell notebook https://bugs.launchpad.net/bugs/198071 You received this bug notification because you are a member of Kubuntu Team, which is subscribed to kde-guidance in ubuntu. -- kubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
