At Wed, 24 Nov 2010 14:26:18 +0000, Matthew Garrett wrote: > > On Wed, Nov 24, 2010 at 08:05:35AM +0100, Takashi Iwai wrote: > > Hi, > > > > At Wed, 27 Oct 2010 12:39:17 +0200, > > Takashi Iwai wrote: > > > Some HP laptops send ACPI video events per lid open/close, and the > > > ACPI video driver translates to SWITCHVIDEOMODE input key events. > > > This behavior confuses the user-space daemon such as > > > gnome-settings-daemon since it changes the video mode per this key, > > > which results in a different video mode at each time you open/close > > > the laptop lid. Fn-Fx keys are handled differently on such hardware, > > > thus this key generation is simply superfluous. > > > > > > This patch adds a module parameter "video_switch_key" to either > > > assign a different key code for this ACPI event or disable by setting > > > zero there. > > > > > > Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> > > > > Any comments on this patch? > > I'm not entirely clear on why this is wanted. Lid state changes seem to > be a reasonable proxy for "Reprobe outputs" - what's userspace actually > doing that causes problems? Typically GNOME changes to the next monitor mode (e.g. xinearama, clone, laptop-only, external-only) by each XF86VideoSwitch key event. If you connect your laptop to a monitor, and sets to clone mode, close the lid, and reopen. Then you'll find the video mode is now external-monitor only. It's because two XF86VideoSwitch key events are issued during close/open the lid. thanks, Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
