I have the same issue on a Dell precision M4300. It also happens when not using hotkeys, almost randomly, a few times a hour. Under both 32 and 64 bits. As a side note, when the problem happens, i press ctrl-alt-F1 and the screen flickers to text mode, but very often comes back "by itself" to graphic mode.
$ uname -a Linux dell64 2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64 GNU/Linux $ dmidecode | grep -i -a1 -b1 vendor; sudo dmidecode | grep -i -a1 -b1 "Product Name" 2899-BIOS Information 2916: Vendor: Dell Inc. 2935- Version: A10 3860- Manufacturer: Dell Inc. 3885: Product Name: Precision M4300 3933- Version: Not Specified -- 4150- Manufacturer: Dell Inc. 4175: Product Name: 0UY141 4197- Version: -- Losing keyboard and mouse control when changing screen brightness with fn + arrow under intrepid https://bugs.launchpad.net/bugs/285323 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
