This patch is in 3.8 kernel. commit a2a96f0c7221806c8a8072b662e6deaa119833da Author: AceLan Kao <acelan....@canonical.com> Date: Wed Oct 3 11:26:31 2012 +0200
asus-wmi: add display toggle quirk For machines with AMD graphic chips, it will send out WMI event and ACPI interrupt at the same time while hitting the hotkey. BIOS will notify the system the next display output mode throught WMI event code, so that windows' application can show an OSD to tell the user which mode will be taken effect. User can hit the display toggle key many times within 2 seconds to choose the mode they want. After 2 seconds, WMI dirver should send a WMIMethod(SDSP) command to tell the BIOS which mode the user chose. And then BIOS will raise another ACPI interrupt to tell the system to really switch the display mode. In Linux desktop, we don't have this kind of OSD to let users to choose the mode they want, so we don't need to call WMIMethod(SDSP) to have another ACPI interrupt. To simplify the problem, we just have to ignore the WMI event, and let the first ACPI interrupt to send out the key event. For the need, here comes another quirk to add machines with this kind of behavior. When the WMI driver receives the display toggle WMI event, and found the machin is in the list, it will do nothing and let ACPI video driver to report the key event. Signed-off-by: AceLan Kao <acelan....@canonical.com> Signed-off-by: Corentin Chary <corenti...@iksaif.net> Signed-off-by: Matthew Garrett <matthew.garr...@nebula.com> ** Changed in: linux (Ubuntu Quantal) Status: In Progress => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1052278 Title: [ASUS][X501U][X401U] Fn + F8 display mode switch hot key will switch the mode 2 times by one single key stroke To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1052278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs