On Fri, Jun 18, 2010 at 06:28:00AM +0200, Julian Ortiz wrote: > There is no problem about having a single large desktop... but I need to use > nvidia driver and as far as I understand it does not support Rand1.2. > > The race condition is caused because xf86InputSetScreen is not thread safe?
sort-of, yes. input events are handled during the signal handler, which is nearly as bad as a thread, only worse... > About Peter Korsgaard matrix... where can I found it to take a look? http://cgit.freedesktop.org/xorg/xserver/commit/?id=6cccf0131c8464d8838cae2200730873d7dd9e45 Cheers, Peter > On Wed, Jun 16, 2010 at 3:21 AM, Peter Hutterer > <[email protected]>wrote: > > > On Mon, Jun 14, 2010 at 05:10:40PM +0200, Julian Ortiz wrote: > > > Hello, > > > After looking for a way to make a touch screen works only in its display > > > (with nvidia configured as different XScreens) with no luck at all, I > > > started to look at the input modules source. I realizes that > > > the proprietary elo module calls to xf86XInputSetScreen, the function > > name > > > seems promising, so I just patch the evdev module to support several > > screens > > > by configuration and to call xf86InputSetScreen in the EvdevReadInput > > just > > > before the EvdevProcessEvent. > > > > > > The result seems to work but the behavior is very erratic and sometimes > > the > > > mouse/touch/keyboard get freezes and I need to restart X. And more > > strange, > > > after launch several OpenGL application the performance drops so, so much > > > (obviously without the patch it doesn't happen) > > > > > > Is xf86InputSetScreen the best approach to handle this? > > > > There's a race condition that can be triggered by xf86InputSetScreen() that > > ends up with a cursor jumping indefinitely between the two screens. This is > > likely the freeze you're seeing. > > > > There's unfortunately no good way to bind the device to a single screen > > right now. Peter Korsgaard input transformation matrix allows it for a > > RandR 1.2 setup but not for multiple protocol screens. > > > > Cheers, > > Peter > > > > > Trying to find the module responsible for the mouse switch between > > different > > > display I saw references to something called SilkenMouse, but I can't > > find > > > any documentation about what is this. Any idea? > > _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
