On Mon, Nov 21, 2011 at 04:47:38PM +0800, Takashi Iwai wrote: > At Mon, 21 Nov 2011 09:58:09 +0800, > Wu Fengguang wrote: > > > > On Sat, Nov 19, 2011 at 01:46:44AM +0800, Keith Packard wrote: > > > On Fri, 18 Nov 2011 17:37:40 +0800, Wu Fengguang <fengguang.wu at intel.com> wrote: > > > > > > > However when in X, ->mode_set won't be called at all. Only > > > > ->get_modes and ->detect are called... > > > > > > The desktop software will call mode_set when it configures the > > > monitor. Otherwise, it's not being used (and so shouldn't have audio > > > routed to it by default). > > > > Keith, I experimented playing HDMI audio in X, and during the time > > unplug and plug the monitor. The HDMI audio/graphics all continue to > > work when plugged in the monitor again. Here is the dmesg showed for > > the plug event, no ->mode_set is called at all... > > Which desktop system are you using? At hotplug/unplugging, the kernel > drm issues a udev event, X Intel driver receives it and updates > Xrandr. Then it's supposed that a daemon like gnome-settings-daemon > receives Xrandr notification and changes the modes appropriately. > Without such a background task, there will be no mode change. Ah I got it. I'm running debian+fluxbox w/o those fancy features... Thanks, Fengguang
