KDE4 Multiple Monitor support

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KDE4 Multiple Monitor support

by Ross Linder :: Rate this Message:

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In KDE3 it is possible to use multiple monitors WITHOUT Xinerama, in this
mode both desktops look like complete sessions, each has its own pannel,
its own workspace manager, and importantly can run at different
resolutions.

It would appear that this is impossible to achieve with KDE4. I think this
is a serious lack of feature.
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Re: KDE4 Multiple Monitor support

by Braden Mcdorman :: Rate this Message:

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Twinview works almost flawlessly for my different resolution monitors, but X itself seems to be
the root of most of my problems If I have them. Supposedly the Nvidia drivers make some funky
changes to the X.org config file. But I can have different panels on each monitor, etc.

Thanks,
Braden McDorman

On Thu, Aug 20, 2009 at 11:28 PM, Ross Linder <info@...> wrote:
In KDE3 it is possible to use multiple monitors WITHOUT Xinerama, in this
mode both desktops look like complete sessions, each has its own pannel,
its own workspace manager, and importantly can run at different
resolutions.

It would appear that this is impossible to achieve with KDE4. I think this
is a serious lack of feature.
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Re: KDE4 Multiple Monitor support

by Shaun Reich :: Rate this Message:

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2009/8/21 Braden Mcdorman <bmcdorman@...>:

> Twinview works almost flawlessly for my different resolution monitors, but X
> itself seems to be
> the root of most of my problems If I have them. Supposedly the Nvidia
> drivers make some funky
> changes to the X.org config file. But I can have different panels on each
> monitor, etc.
>
> Thanks,
> Braden McDorman
>
> On Thu, Aug 20, 2009 at 11:28 PM, Ross Linder <info@...> wrote:
>>
>> In KDE3 it is possible to use multiple monitors WITHOUT Xinerama, in this
>> mode both desktops look like complete sessions, each has its own pannel,
>> its own workspace manager, and importantly can run at different
>> resolutions.
>>
>> It would appear that this is impossible to achieve with KDE4. I think this
>> is a serious lack of feature.
>> _______________________________________________
>> kde-quality mailing list
>> kde-quality@...
>> https://mail.kde.org/mailman/listinfo/kde-quality
>
>
> _______________________________________________
> kde-quality mailing list
> kde-quality@...
> https://mail.kde.org/mailman/listinfo/kde-quality
>
>

Yeah, I just recently (yesterday) set up a dual head LCD desktop (with
nvidia), so I enabled Xinerama because it sounded good and.. well, it
was an extra option, so I figured I had might as well...

Needless to say, I was disappointed when I couldn't access my virtual
terminal well I could...but I could only see a black screen, but I
could log in and stuff(I knew because when I logged in, I could hear
my hard drive being used)..

I also found out that compositing wasn't working..

So in conclusion..I think the moral of the story is to not have
Xinerama enabled, because it seems to do the following:

(a) seems to do nothing for extra features or usefulness

(b) disables compositing permanently while Xinerama is enabled

(c) disables your ability to access virtual terminals

So yeah, I really don't see a reason for using it... I was under the
impression that it allowed dragging of windows between each separate X
session... but TwinView does the same exact thing... in fact, I can't
find any missing feature switching from Xinerama to TwinView, only
extra features (well..more like Twinview  having a lack of inability
to use features).

I recommend, as Braden said, to use TwinView, there is nothing to
lose, only to gain from what you lose with using Xinerama. The mouse
moves between them and everything, flawlessly...

Now I just have to figure out how to (if I can) get the virtual
terminals (via GRUB2) to display at a nice and high resolution... with
1600x900 for each monitor being the native (and current), 1280x1024
does not cut it for a virtual terminal, as it's huge...

It works absolutely beautifully for me, the only thing that I wish it
had, was Plasma to have the ability to copy plasmoids, but I will just
have to do it manually (I like the idea of 2 activities separate, but
don't like the idea that I have to do twice the work of setting up an
activity)

--
Innumerus Gratiae,
Shaun Reich
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Re: KDE4 Multiple Monitor support

by Kenneth Lakin-2 :: Rate this Message:

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Shaun Reich wrote:
> (b) disables compositing permanently while Xinerama is enabled

IIRC, Xinerama is deprecated for this and many other reasons. Xrandr is
its replacement.

https://lists.ubuntu.com/archives/ubuntu-x/2007-November/000059.html



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Re: KDE4 Multiple Monitor support

by Eric Springer-2 :: Rate this Message:

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On Fri, Aug 21, 2009 at 2:28 PM, Ross Linder <info@...> wrote:
> It would appear that this is impossible to achieve with KDE4. I think this
> is a serious lack of feature.

Hi Ross,
I believe I have the set-up you are after [1]. I'm using the
opensource ( ati ) drivers, and then used xrandr [2] to adjust it to a
side-by-side layout.

Hopefully it'll work for you too.

[1] http://img40.imageshack.us/img40/2081/dualmonitor.png
[2] xrandr --output VGA-0 --mode 1280x1024 --pos 0x0 --rotate normal
--output DVI-0 --mode 1366x768 --pos 1280x0 --rotate normal
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