Re: [gentoo-user] Re: Can't paste from selection in gtk-3 apps

[J. Roeleveld]

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 <joost@××××××××.org> wrote:
> >>> On Thu, September 17, 2015 16:33, Grant Edwards wrote:
> >>>> On 2015-09-17, Grant Edwards <grant.b.edwards@×××××.com> wrote:
> >>>>> On 2015-09-17, J. Roeleveld <joost@××××××××.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