On Fri, Sep 16, 2016 at 03:38:02PM +0100, Markus Kuhn wrote: > I am trying to use my Wacom Cintiq 13HD in what some call a > "ZaphodHead" configuration, i.e. where my xorg.conf file > has dual sections for Device, Screen and Monitor, > one for my regular 1600x1200 desktop display (DISPLAY=:0) and one for > the 1920x1080 display in the tablet (DISPLAY=:0.1). > > Unfortunately, I have not managed to find a way in xorg.conf > to constrain the stylus range of the Wacom tablet to just one > of my two Screens (namely the DISPLAY=:0.1 one). Instead, the > stylus always travels horizontally across a 1600+1920 wide > virtual screen, which obviously breaks positioning on the tablet > display. > > I just noticed that the exact functionality I was hoping for did > in fact exist in the past, in form of > > Option "ScreenNo" "1" > > but was removed in commit 4ffd3c64ca29a637bf1d2c69b11e360e8d8a82f5: > > Author: Peter Hutterer <peter.hutte...@who-t.net> 2010-11-24 05:02:15 > > Purge ScreenNo handling. > The definition of ScreenNo isn't clear, given that we have RandR > screens, > ScreenRecs and protocol screens, not all of which overlap totally. Let > the > mapping of the tablet to a given area on the available desktop be > handled by > a client. > > That removed option seemed to do exactly what I wanted (for > protocol screens) ... :-( > > Is there now any other way in /etc/X11/xorg.conf.d/ (or a similar > global config file) to bind the absolute coordinate range of a wacom > tablet to just one single screen? > > I would very much like this binding between screen and tablet > to be done properly from the very beginning by the X server, > in a system-wide configuration file for all users (like xorg.conf), > before the user logs into a display manager. I therefore would > like to avoid user clients such as "xsetwacom set 14 MapToOutput ..." > that only kick in after login. > > Is there no chance to bring Option "ScreenNo" back, > perhaps with a slightly changed syntax to make the > semantics unambiguous? > > What was gained be dropping the existing multi-head support > from the driver?
maintainability. ScreenNo predates the ability to hotplug screens in X, these days a protocol screen like you use it is the exception, not the rule. the problem with ScreenNo isn't the ambiguity, it's that it just doesn't really apply when a screen isn't already plugged in on boot. in many cases, the screen order isn't clear until after login, e.g. when you use xrandr to arrange the displays. Cheers, Peter ------------------------------------------------------------------------------ _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
