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#1 2010-12-25 09:12:37

furakon
Member
Registered: 2009-07-20
Posts: 16

[closed] xrandr: the second monitor

Hi, I have notebook and tried to connect second monitor according to this article http://www.thinkwiki.org/wiki/Xorg_Rand … ful_things

xrandr --output LVDS1 --mode 1400x1050 --output VGA1 --mode 1280x1024 --right-of LVDS1

And I have the problem they mentioned:

This will probably give an error message similar to:
   xrandr: screen cannot be larger than 2048x2048

But I need 1400x1050 + 1280x1024 so 2680x1050.
They want me to edit Virtual option in xorg.conf, but I have no xorg.conf file. Is it possible to solve this issue without creating xorg.conf?

And one more question. Is it possible to set which screen will be primary? I tried so set second monitor with lower resolution to pass that limit (2048), but it makes external monitor primary (there were aplication bar and desktop widgets etc.) and laptop display secondary (blank screen). I want it conversely.

Last edited by furakon (2010-12-27 16:29:57)

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#2 2010-12-25 09:49:12

Gusar
Member
Registered: 2009-08-25
Posts: 3,605

Re: [closed] xrandr: the second monitor

furakon wrote:

Is it possible to solve this issue without creating xorg.conf?

No, you'll have to create a minimal one, containing just a Screen section, where the virtual is defined. Though this shouldn't be needed anymore, so are you sure your hardware is *physically* capable of more than 2048x2048?

furakon wrote:

Is it possible to set which screen will be primary?

Yes, check the xrandr help, there's a '--primary' option.

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#3 2010-12-25 10:46:50

furakon
Member
Registered: 2009-07-20
Posts: 16

Re: [closed] xrandr: the second monitor

Ok, I will create xorg.conf, I hope my hardware would manage it (I have integrated intel 82852/855GM graphics)

And --primary works fine.

Thank you very much

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#4 2010-12-25 12:37:10

furakon
Member
Registered: 2009-07-20
Posts: 16

Re: [closed] xrandr: the second monitor

Well, I created xorg.conf but an error about framebuffer appeared during starting X, it probably means that I cannot set more than 2048. But I can use both monitors at lower resolution.

by the way ms windows manage to use both monitors, it uses different techlogy? or it is about drivers?

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#5 2010-12-26 11:50:50

Gusar
Member
Registered: 2009-08-25
Posts: 3,605

Re: [closed] xrandr: the second monitor

I guessing here, but yeah, I think it's about drivers. Driver support in Linux for those old Intel chips is very poor.

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#6 2010-12-26 13:12:13

Cyrusm
Member
From: Bozeman, MT
Registered: 2007-11-15
Posts: 1,053

Re: [closed] xrandr: the second monitor

I would say that it's most likely a driver limitation over a hardware limitation. I've had to deal with this same problem before after a random ATI update a couple years back.. What graphics card and driver are you currently using? maybe there is an alternative out there.

EDIT: I've just been looking around, and apparently this 2048x2048 limit with Intel has been a thorn in several peoples sides before.
If you want a short-term work around, try setting them up with one monitor "on top" of the other,  with the large monitors that you have, this will have to involve overlapping the screens by a few pixels (2048 - (1050+1024) =  -26) and is a FAR from perfect solution.
but at least this will give you some desktop real-estate while you're searching for a better solution...

Last edited by Cyrusm (2010-12-26 13:26:35)


Hofstadter's Law:
           It always takes longer than you expect, even when you take into account Hofstadter's Law.

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#7 2010-12-26 15:38:13

furakon
Member
Registered: 2009-07-20
Posts: 16

Re: [closed] xrandr: the second monitor

some information about graphics (lspci)

00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02) (prog-if 00 [VGA controller])
        Subsystem: Fujitsu Limited. Device 120e
        Flags: bus master, fast devsel, latency 0, IRQ 11
        Memory at d8000000 (32-bit, prefetchable) [size=128M]
        Memory at d0000000 (32-bit, non-prefetchable) [size=512K]
        I/O ports at 1800 [size=8]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

I have installed xf86-video-intel (2.13.0-4)

I tried your idea and you were right it's not much good.

Maybe it's time to let it be and say goodbye to second monitor
(or I can make same money and buy new notebook, but I am just poor student)

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#8 2010-12-26 16:06:48

Cyrusm
Member
From: Bozeman, MT
Registered: 2007-11-15
Posts: 1,053

Re: [closed] xrandr: the second monitor

https://aur.archlinux.org/packages.php?ID=22128

I briefly read through the documentation on this program from the AUR, and it may help.


Hofstadter's Law:
           It always takes longer than you expect, even when you take into account Hofstadter's Law.

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#9 2010-12-26 17:06:20

Gusar
Member
Registered: 2009-08-25
Posts: 3,605

Re: [closed] xrandr: the second monitor

Cyrusm wrote:

https://aur.archlinux.org/packages.php?ID=22128

I briefly read through the documentation on this program from the AUR, and it may help.

It won't. The purpose of that app is to program a new resolution into the vbios, for use with vesafb or uvesafb. With KMS, that app is now obsolete,

Last edited by Gusar (2010-12-26 17:06:32)

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#10 2010-12-27 16:29:42

furakon
Member
Registered: 2009-07-20
Posts: 16

Re: [closed] xrandr: the second monitor

I think we will not come up with anything else so I am closing this issue.
Thank you very much.

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