On Friday 18 September 2015 16:22:00 Alan McKinnon wrote: > On 18/09/2015 16:11, J. Roeleveld wrote: > > On Friday 18 September 2015 13:23:49 Grant Edwards wrote: > >> On 2015-09-18, J. Roeleveld <jo...@antarean.org> wrote: > >>> On Thu, September 17, 2015 16:33, Grant Edwards wrote: > >>>> On 2015-09-17, Grant Edwards <grant.b.edwa...@gmail.com> wrote: > >>>>> On 2015-09-17, J. Roeleveld <jo...@antarean.org> wrote: > >>>>>>>> I use 2 screens extensively and never experienced any issues like > >>>>>>>> you > >>>>>>>> describe. > >>>>>>> > >>>>>>> And you can select/paste from one screen to another where the source > >>>>>>> is a gtk-3 app? > >>>>>> > >>>>>> Not sure, need to test with a gtk-3 app. > >>>>>> > >>>>>> I run KDE myself. > >>>>>> > >>>>>>> I should clarify that I mean "screen" in the strict X11 usage. > >>>>>>> Using > >>>>>>> Xinerama or the like to spread a single desktop across multiple > >>>>>>> monitors is still a single screen setup. I'm trying to select text > >>>>>>> on DISPLAY=:0.0 and paste it on DISPLAY=:0.1 > >>>>>> > >>>>>> Not using my desktop atm. > >>>>>> What does Xorg do by default when it detects multiple screens? > >>>>> > >>>>> Not sure -- I'll have to give it a try. IIRC, it just uses the first > >>>>> one. > >>>> > >>>> At least on my machine, if I start up X11 without a configuration > >>>> file it only uses one of my three monitors. That behavior may depend > >>>> on which boards are installed and which board/driver is found first. > >>> > >>> On my desktop: > >>> > >>> $ cat /etc/X11/xorg.conf > >>> Section "Device" > >>> > >>> Identifier "Card0" > >>> Driver "nvidia" > >>> BusID "PCI:2:0:0" > >>> > >>> EndSection > >>> > >>> (Without this, X doesn't start, complaining it can't find VESA) > >>> > >>> echo $DISPLAY returns the same on both desktops. > >> > >> That is a single X11 screen spread across two physical monitors. It > >> will not exhibit the gtk-3 selection bug. > >> > >> Are you sure you have two desktops and it's not just a single desktop > >> that is spread across two monitors? Can you drag a window from one > >> monitor to the other? If you can, then it's a single desktop. > > > > Yes, I can. > > When I maximize a window, it's only on 1 screen. > > > > This is how it seems "right" to me. > > > > Why would I want it to be different? Eg. windows can't be moved between > > screens? I don't see the point of having more than 1 screen in that case. > > There's a few reasons you might want more than one screen. Primary one > is two heads and two video cards with different resolutions and dpi. > Xinerama and big desktop et al will use the lower setting for both.
Actually, this desktop has xinerama enabled in USE-flags. IOW, I'm assuming I am using Xinerama on here. I can change the resolution of either screen and it all still works. (apart from the weird look of windows on the other screen) > Some folk have 2 screens just because they've always done it that way > for years and don't want to change > > These days the usual case is one video card with more than one output so > you connect identical monitors to each. For that, one big desktop makes > sense. Same with laptops, all laptops I've used in the past 5 years all had the option to add a 2nd display and use that. Even with differing resolutions, it works the same way. Plug it in, change the setting if necessary (kdesettings does a good job with that) and I have 2 screens where i can move windows back and forth. It's great for presentations. Can open a text-file with the passwords on the laptop screen and copy/paste them from there onto the big screen everyone else sees. -- Joost
