On Mon, Aug 20, 2012 at 05:12:59AM +0000, Alex Dubov wrote: > Sorry for my previous mis-posting, there appears to be some problem with gmane > interface. > > There exist considerable number of hot-pluggable USB devices with helper > buttons > (cameras and headsets being the more prominent examples). The buttons in > question are recognized by evdev as USB HID interfaces, so in theory they are > considered as "supported". > > In practice, however, there are 2 common problems: > > 1. Buttons have session global effect and there's no easy, nor stable way to > limit their effect to a particular device.
I don't understand this bit. can you paraphrase? > 2. Sometimes device buttons are recognized as "mice", rather than "keyboards" > and there's no much one can do with "mouse" buttons out of Xorg box (assorted > third party programs of varying breed and maintenance status notwithstanding). evdev will set up BTN_0...BTN_TASK as buttons on a device. anything else should be a keyboard. especially KEY_CAMERA should be a key. what specific device has the camera button set up as mouse button? Cheers, Peter > I tried to make some sense of the issue for myself, but it appears to be > impossible to get through untold scores of various user complains on the > inter-webs. :-) > > Can somebody point me at an information or discussions regarding the issues > above? After all, those devices are abundant and appear to work just fine even > on older windows xp, without any extraneous effort. > > It seems logical to me that USB buttons must represent a whole input device > class on their own, with appropriate events defined. I suppose, it won't be a > big deal to incorporate support for them into existing applications, because > the > need for such arrangement is long and widely recognized by anybody who tried > to > rely on such buttons on Linux. _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
