Try typing the following command in a terminal: xgamma -gamma 0.75
If that doesn't work you need to install xgamma from the repos. I have posted my own solution here on setting it up: http://ubuntuforums.org/showthread.php?p=4168042#post4168042 -- Brightness control via ACPI in HP notebooks https://bugs.launchpad.net/bugs/82188 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
