X11 on a single screen in a dual monitor setup

Same problem as posed here: http://discussions.info.apple.com/message.jspa?messageID=2260647&tstart=0
I was excited when I read the following:
I fiddled with Apple's X11, which I'd installed on my Desktop, to no avail. Nowhere could I disable the screen-spanning behavior. On a hunch, I decided to try out XDarwin, however, and lo and behold --- a checkbox for enabling/disabling Xinerama! In addition, XDarwin seems to be better behaved than Apple's X11 when it comes to correctly sourcing some of my $HOME/.X* configuration files (e.g., I always had to run xmodmap ~/.Xmodmap manually under X11, even after putting the command in my .xinitrc).
I only ever use Xquartz(currently XQuartz 2.6.0 (xorg-server 1.9.3)) which is Xdarwin now. But I do not see the mentioned checkbox for enabling/disabling Xinerama.
Which sounds exactly like what I want to do. I want to have my macbook air(mba) to display full screen Xquartz on external 27" Dell monitor only. On the macbook screen I want to show the OSX desktop with open applications not blacked out by X11.
Any pointers to this checkbox's location would be great. Or any other way to configure this setup would also be good.
I'm not looking for solutions that keep the laptop monitor off in any way as I have seen suggested many times. This is because I want to use it to view state of other OS X apps on the macbook screen while working in full screen X session on the external monitor.
The xnest solution sounds inferior for the same reasons pointed out by Michael C. Lee in the post I mentioned above.

Hi Andy,
I really appreciate your help!
I believe you're correct in that I wouldn't be able to start the X server and have it only produce output on one of my monitors, as they are necessarily part of a single "display" (in OS X, at least). Barring that, however, I wanted to be able to at least keep X11 from creating a single screen that spanned both my monitors (the problem with this is that it doesn't recognize the separate monitor geometries, so large chunks of the virtual spanning screen were inaccessible, and it also made dealing with X apps that are none dual-head friendly a pain). On my linux machine, I was able to get this behavior by default (i.e., separate screens named '.0 and .1' under a single X display), and could get monitor spanning only after enabling the Xinerama extension.
I fiddled with Apple's X11, which I'd installed on my Desktop, to no avail. Nowhere could I disable the screen-spanning behavior. On a hunch, I decided to try out XDarwin, however, and lo and behold --- a checkbox for enabling/disabling Xinerama! In addition, XDarwin seems to be better behaved than Apple's X11 when it comes to correctly sourcing some of my $HOME/.X* configuration files (e.g., I always had to run xmodmap ~/.Xmodmap manually under X11, even after putting the command in my .xinitrc).
Anyway, that basically gave me what I needed, so I'm a happy camper. Just thought I'd post this in the unlikely event that someone else is in the same situation. Oh, and if you're curious, the reason I needed to do this in the first place was because I wanted to run the ratpoison windows manager fullscreen --- great for dealing with ADD!

Similar Messages

Both the screen flickering after dual monitor setup in Premiere Pro CS6

Hello,
I recently installed Premiere Pro CS6 in my PC. Then after I set up dual monitor in the Preference, the screens of both the monitor started to flicker until I stop the playback. Previously I used same hardware with CS5 but there were no problem.
Link to dxdiag text file :
https://dl.dropbox.com/u/53681371/DxDiag.txt
I have attached the screenshots of msinfo32 and my graphics drive info.

Some ideas for a Desktop Video Editing PC
http://www.adkvideoediting.com/
-ADK Kudos http://forums.adobe.com/thread/877201
Build http://forums.adobe.com/thread/878520?tstart=0
-more build ideas http://ppbm6.com/Planning.html
-Build it Yourself http://forums.adobe.com/thread/815798
-http://www.shawnlam.ca/2012/premiere-pro-cs6-video-editing-computer-build/
Laptop Video Editing PC http://forums.adobe.com/message/4578948

[AwesomeWM] Applications locked to one screen in a dual monitor setup

Perhaps the title should be "Multiple Screens with multiple video cards." I imagine my confusion here is the reason I am unable to move clients from one screen to the other in awesome. Though the cursor moves fluidly between Screen1 and 2, MOD4+drag traps the cursor and the client on the current screen. MOD4+o brings the cursor to the upper left corner of the current screen. Openbox and fluxbox are similarly limited.
With my Xorg.conf I have $DISPLAY as :0.0 or :0.1 depending on which screen the terminal is open.
The closest I've come to a solution is xpra from the parti-all aur package. But, I haven't found a way to make it useful. I'm hoping there is an alternative configuration. Maybe something like xinerama or Zaphod?
I'd like to use xrandr but it seems thats a no go for multiple boards as of the the previous version. I cannot find documentation for 1.3.
http://wiki.debian.org/XStrikeForce/HowToRandR12 wrote:VI.5. Multi-board support broken - RandR 1.2 does not support multiple boards yet (it's planned for RandR 1.3). It means that any RandR 1.2 aware driver will crash the server if you have 2 boards. Even one board with a RandR 1.2 driver and another board with a classic driver does not work. It just crashes the X server.
Any ideas?
> grep -v "^\s*#" /etc/X11/xorg.conf|grep -v ^$ |xclip wrote:Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
FontPath "/usr/share/fonts/Type1"
EndSection
Section "Module"
Load "glx"
Load "dri2"
Load "extmod"
Load "dbe"
Load "dri"
Load "record"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option    "Protocol" "auto"
Option    "Device" "/dev/input/mice"
Option    "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
Identifier "Card0"
Driver "nv"
VendorName "nVidia Corporation"
BoardName "NV25 [GeForce4 Ti 4200]"
BusID "PCI:3:0:0"
EndSection
Section "Device"
Identifier "Card1"
Driver "radeon"
VendorName "ATI Technologies Inc"
BoardName "Radeon RV100 QY [Radeon 7000/VE]"
BusID "PCI:1:7:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Err. My confusion is indeed the culprit. For anyone who might find themselves in a similar situation the nomenclature is as follows.
"Zaphod mode" on wikipedia is listed as a multi-seat configuration, however, I think it more often describes the set up in my posted xorg.conf. That is, the server has two independent screens associated with their respective device. Titling window managers seem to present multiple screens a la Zaphod. At least in awesome, each screen has its own set of tags. Xinerama is a soon to be deprecated extension merging multiple physical displays into a singular virtual one. It will be replaced with RandR. But, as of the current version of RandR, multi-board setups are not supported.
ATI and nVidia have proprietary implementations for multi-head configurations (Big Desktop and Twinview respectively). I assumed both cards would have to be same brand and either ATI or nv. So, I didn't look into this.
By the nature of Zaphod mode, applications exist only on one screen. They cannot easily be moved. Because the Xinerama extension implements one large virtual display, X clients can be displayed anywhere. This is apparently at the cost of direct rendering on both screens. Xinerama is also limited in that all screens have to have the same depth.
Having the Zaphod mode xorg config, enabling Xinerama just requires one line in the ServerLayout section:
Section "ServerLayout"
Option "Xinerama" "on"
However, if the resolution differs on the screens, screens with lower resolutions will have "dead space" where the rectangle of the virtual resolution is not displayed by the physical resolution of a screen. Moving the cursor into this area will pan the screen to show the previously hidden area and hiding what was previously visible. This means an application fullscreened on the screen with the lower resolution will never be completely visible.
To enforce physical resolutions in the virtual screen also only requires one line. In the display subsection of the lower resolution screen section, setting the virtual display to the same as the mode will remove the dead area.
Section "Screen"
Identifier "Screen1"
SubSection "Display"
Modes "1280x1024"
Virtual 1280 1024
EndSubSection
Please reply if I've gotten anything wrong!
Last edited by _will (2009-10-07 22:08:19)

How to keep slideshow on one screen in a dual monitor setup

The slideshow shows on my laptop screen which is fine, but iPhoto '09 commandeers my external monitor as well, making it black/blank and unusable during the slide show. How can I continue to work and use my external monitor while playing a slideshow on my laptop screen?

iPhoto doesn't support dual screens. Send a feature request to http://www.apple.com/feedback/iphoto.html.

Dual-monitor setup + screen rotation

Hello, I want to use my desktop computer with a dual-monitor setup. I have connected both monitors successfully, but problems arise after this point.
The first problem is that they both just display the same screen and that xrandr only detects one screen called "Screen 0". I can change the screen resolution with it, so at least it sees things correctly, but I don't know how to extend my screen area to a new desktop. Not sure if this is relevant, but they're both monitors of the same model.
output of xrandr wrote:[user@archbang ~]$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1600 x 1200, maximum 1600 x 1200
default connected 1600x1200+0+0 0mm x 0mm
1600x1200 0.0*
1280x1024 0.0
1024x768 0.0
800x600 0.0
640x480 0.0
The second problem is that I can't rotate my screen (I want this because it has pivot functionality). I'm using the xf86-video-ati driver.
output of xrandr -o left wrote:[user@archbang ~]$ xrandr -o left
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 149 (RANDR)
Minor opcode of failed request: 2 (RRSetScreenConfig)
Serial number of failed request: 14
Current serial number in output stream: 14
I hope I've provided enough information. Thanks in advance.
Last edited by Ffeiofewpoj (2012-01-28 08:03:04)

I meant to post this in the Kernel & Hardware section and I've no clue how it ended up here. Sorry for that. Could someone move it?
Last edited by Ffeiofewpoj (2012-01-27 13:25:01)

Dual monitor setup without using the ADC?

Would it be possible to run a dual monitor setup using a DVI splitter cable from my (2009)Mac Pro?
I've seen some old forums referring to the 2006 models saying that this wouldn't work and instead you'd get the same image on both screens but the newer Mac Pros state they have "Dual-Link DVI ports".
Just wondering whether this means what I think it means and you can connect two monitors via a dual link cable and get essentially, two monitors running independently as opposed to the same thing on both??
Hope it's staightforward and me just being slow.

The GT120 features one Dual Link DVI-I port and one Mini DisplayPort .
The DVI-I is Dual Link capable, and also can be directly adapted to VGA.
Single-Link DVI is a serial interface that carries three data bits in each signaling interval, as well as control signals. In general, Single-Link supports displays up to 1920 wide. Dual Link DVI is the same except that it carries six data bits in each signaling interval, supporting displays over 1920 wide.
DVI screen drawing is very similar to VGA screen drawing, and the data sent are digital "scan lines" left-to-right row data, top-to-bottom with entire screen data sent about every 60 Hertz. Analog VGA signals are sent at the same time on a separate set of pins.
DisplayPort and its Mini variant are inherently a packet interface, but can be coerced to produce a "Dual Mode" signal that approximates Single-Link DVI. Getting Dual-Link DVI or VGA from DisplayPort interface requires a non-trivial converter than contains chips and requires power.
Executive Summary:
If you have one display that is wider than 1920 or VGA, attach to the DVI-I connector with an appropriate cable.
Running a Mini DisplayPort display from the Mini DisplayPort requires only a cable.
Single-Link DVI can be had from the Mini DisplayPort with a cheap adapter.
Dual-Link DVI or VGA requires an expensive Active Powered converter which can cost US$100.

Dual monitor setup - need laptop on the left

Hi All
I'm running a dual monitor setup - specifically a HP G72 laptop and a widescreen monitor. I use the monitor as the default and sometimes I want to use the Laptop as a secondary screen for watching TV etc. My desktop is Enlightenment, I just changed to it from Gnome. My issue is that I want the laptop to be on the left of the monitor - that's how it is physically positioned - but when I switch the Laptop screen on all my applications shift over to the laptop screen. I've written 2 scripts, attached to hotkeys, one to turn the laptop off and the other to turn the laptop on. The script to turn the laptop on is as follows:
xrandr --output LVDS1 --mode 1600x900 --pos 1600x0 --rotate normal
--output VGA1 --primary --mode 1920x1080 --pos 0x0 --rotate normal --left-of LVDS1
This works fine, applications stay where they should be, except that the physical position is incorrect; VGA1 should be to the right of LVDS1 like this:
xrandr --output LVDS1 --mode 1600x900 --pos 1600x0 --rotate normal
--output VGA1 --primary --mode 1920x1080 --pos 0x0 --rotate normal --right-of LVDS1
However, when I use the second script all of the applications shift to the laptop but at least the physical position is correct. The issue appears to be something to do with laptops, almost as though when it's a laptop the default monitor is forced to be on the left. Has anybody got any suggestions how to get around this issue?
Thanks
Richard

This is due to your window manager treating the two monitors as a larger 'desktop' area - that combined with your specification of the pos=0x0 you are telling it to do this.
If you have only the VGA output on, the top left corner of the VGA monitor is 0x0. If you open a window, and it is placed 10 pixels in and down from the top left, it is at coordinates 10x10 in the x session. Then you turn on the laptop monitor and specify that the top left corner of the laptop monitor should now bo considered 0x0 - but nothing is done to move the windows, so the window with coordinates 10x10 is now near the top left of the laptop monitor.
I see 3 possible ways of acheiving what you want:
1) swap the "pos" parameters in your xrandr commands so that the monitor on the left is always at 0x0 and the one on the right is always at 1920x0 (or whatever). This will leave a large area of available X desktop that is not visible - I don't know how your window manager will treat this. It might try to map windows on the laptop screen space even though that screen is not on. I know openbox is easy to configure where it tries to place windows.
2) Keep the VGA monitor always at 0x0, but place the laptop monitor at a negative offset when you want it on. I don't actually know if X allows negative coordinates like that, but it's worth a shot.
3) Configure your window manager, or use a different window manager, so that it is aware of the two screens and treats them reasonably (e.g. moves windows when the desktop area is changed).
Last edited by Trilby (2014-07-12 12:15:42)

Maximising Safari on a dual-monitor setup (GUI behaviour in Window XP Pro)

When I maximise Safari on the 2nd monitor of my two-monitor setup, it disappears off-screen (but its icon still remains in the XP taskbar) and I am unable to bring it back into the viewable area. Consequently, I have to close Safari and reopen it to continue.
When I maximise Safari on the 1st monitor it fills the screen as I'd expect.
Windows XP Pro

Confirmed on another Dell D610/Windows XP dual-monitor setup.
However, when I maximise safari on the secondary monitor it still appears on the task bar, enabling me to right-click and Restore the window (whereupon it reappears).
Jon

Dual monitor setup MBA 2013

Hello Everyone,
This is my first post on the Apple Support Community.
Nice to meet al of you!
System information:
Macbook Air medio 2013
Model MacBookAir6,2
Intel Core i7 1,7GHZ
8GB
512GB SSD
I am wondering if it is possible to have a dual monitor setup using the thunderbolt feature daisy-chain.
The configuration i am looking for is:
MBA --> Belkin Thunderbolt™ Express Dock (for using gigabit ethernet) --> Dell U2414H --> Dell U2414H
Specs:
Belkin Thunderbolt™ Express Dock = http://www.belkin.com/us/p/P-F4U055/
Dell U2414H = http://accessories.us.dell.com/sna/productdetail.aspx?c=us&cs=04&l=en&sku=860-BB CG
Do i have a chance this could work?
I'm looking forward to hearing from you all.
Thanks!
Kind regards,
Njamo187

Hello,
I had the same problem with a nVidia GT120 card (2009 Mac Pro standard). OSX wouldn't show the gray screen on the 3090, even when it was connected alone (to the DVI port). Also, the login screen would always revert to the secondary display (connected thru the mini display port to DVI adapter).
After login, all was well.
Now I've solved the problem with an nVidia GTX 285 card. The 3090 is connected to the n.1 DVI port and the secondary display (a 1600x1200 Eizo L997) to the n.2 DVI port, and the Mac Pro boots correctly on the 3090 (gray screen and everything, at full 2560x1600 resolution).
Note that the first time I booted up the Mac after replacing the GT120 with the GTX 285 I had the same problem, and solved it by disconnecting the secondary display and then rebooting with the 3090 alone. Now everything works as it should.
Dont't know if there is a bug somewhere (EFI, maybe) of if the GT120 and your ATI are simply unable to work at full resolution before OSX desktop loading.

Dual monitor setup with seperate resolutions

hey guys!
i currentley run thye latest version of archlinux with the cinnamon desktop environment and an nvidia geforce 7300SE graphics card.
im running a dual monitor setup with one 27" 1920x1080 monitor and one 27" 1024X768 monitor
because they have the same physical size they line up perfectley but because the resolution is different programs/mouse cursor movement doesnt, is there any way (without changing the resolutions) to compensate this effect so that in the eyes of linux/cinnamon the monitors line up so that for example dragging a window goes seamlessley between the 2 monitors.
i HAVE found out the panning option in the nvidia x server settings, but that really isnt what i am looking for...
Last edited by RikSolo (2014-08-04 11:25:02)

A magnifier following the window down to the pixel, zooming to the exact size of 540 pixels the 384 pixels window could create an illusion of just that. It would be highly impractical however, not mention all the hacking time. Even if you would manage to get two screen with different sized icons, so that they match visually, the windows and fonts resizing on the fly, wmctrl might help with windows alone, no their themes (buttons, borders thickness etc.), you would still be left with a visually differently sized mouse cursor. Technically such a feat should be possible, but who is going to code it? Nvidia?
Last edited by emeres (2014-08-04 18:48:59)

Dual Monitor setup for Mac Mini???

I just bought a VGA Y-cable and split my monitor signal to two monitors. Unfortunatley the same thing is displayed on both screens where as I was looking for an extension to my desktop.
I found this http://www.national-tech.com/catalog/dvisplitter.htm (the top one for $ 146)
I was wondering if I split the signal with a dvi splitter rather than a vga splitter if i could have a dual monitor setup with more screen space...
Thanks,
Paulie
Mac Mini Mac OS X (10.3.9)

This will do it for you: http://shopmatrox.com/usa/products/datasheet.asp?ID=788
ibook g4, mac mini core solo, powermac g4 gigabit ethernet Mac OS X (10.4.5)

Monitor Profile incorrect on Dual Monitor Setup

Hello,
I've searched the forums and I can't find an answer to my problem. I've read about dual monitor setups in Windows and how to set the defaults and whatnot, but it doesn't seem to fix my problem.
I am running on an nVidia GeForce 8600M GT, Windows 7 x64, Photoshop CS4 x64. I calibrated my main display (Dell Vostro 1700) as well as the attached monitor (ASUS VK246H) using Datacolor Spyder3Elite. Both monitor profiles seem to load just fine. I've also went into Windows' color manager and set the system defaults for each monitor respectively. The problem I'm having is that if I were to load Photoshop on the 2nd monitor, Photoshop only uses the main display's color profile (Vostro 1700) and not the ASUS VK246H profile. What could be going wrong?
Just to clarify, what I mean by "loading PS on the 2nd monitor" is that when I execute Photoshop.exe, the splash screen and main window shows up on the 2nd monitor, not the main monitor (which is what I want).

function(){return A.apply(null,[this].concat($A(arguments)))}
Chris Cox wrote:
What if the image is in between two monitors?
The piece on each display is corrected for the display it is on.
Is it supposed to work that way? Because it doesn't. Not with Photoshop CS5 x64 at least.
As a test I intentionally misconfigured the profile for my Monitor #1 (left) so that it's REALLY OBVIOUS which profile is being used. When set this way, on Monitor #1 red colors will appear pale orange.
An open document, floating in a window:
If COMPLETELY displayed on Monitor #1, Photoshop will use the Monitor #1 profile.
If even 1 pixel of the edge of the image is moved onto Monitor #2, it will use the Monitor #2 profile on the entire image.
See for yourself:
-Noel

Question about dual-monitor setup - advanced dock + PCIe card

I just got a Z60t at work. I had been using a dual monitor setup, but it doesn't look like my current config is going to fly w/ the new machine. Anyway, here's what I've got:
Primary monitor: Acer AL2416W (1920x1200 DVI)
Secondary monitor: Dell 1901FP (1280x1024 VGA)
I've read that the advanced dock might be able to let me use this setup with the Z60t if i put a PCIe video card in it. So here are my questions:
1. Will the advanced dock + PCIe video card allow me to run the two monitors listed above (I don't use the laptop screen at all)?
2. Which PCIe cards are compatible with the advanced dock?
3. Can I achieve the same resolutions with the advanced dock + PCIe card?
4. Will I need to split the VGA output, or can i use VGA + DVI like I do now (since the Z60t has no native DVI support)?
thanks!

Gary -- don't turn on the OS Display Mirroring. Turn it off.
You want Aperture to control how it uses your dual monitors. (You do not want the OS to determine it.)
Once you've turned off the OS "Display Mirroring", the set-up I specified above should give you what you want.
That set-up is:
"View → Main Viewer → {anything}", and
"View → Secondary Viewer → Alternate"
You must have the Viewer active (not the Browser) in order to change the "Secondary Viewer" setting. If you are in the Browser, activate the Viewer by double-clicking an Image.
Let me know if that doesn't work.

Dual monitor setup and intel help

Hello
I am trying to set up and dual monitor setup here, with a monitor and a tv, the monitors resolution is 1680x1050, the tv's resolution is 1360x720, which results in that the desktop will have an resolution on 3040x1050.
When I try to do this with GNOME's xrandr gui, I get this:
required virtual size does not fit available size: requested=(3040, 1050), minimum=(320, 200), maximum=(1920, 1920)
When looking in the motherboards manual, it states that each out of my graphics card can do a resolution of 1980x1080. Is the intel driver missunderstanding something? Since both the dvi and hdmi output only delivers 1360x720 and 1680x1050, 3040x1050 is only an virtual resolution.
Any suggestions?

Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
FontPath "/usr/share/fonts/Type1"
EndSection
Section "Module"
Load "record"
Load "dbe"
Load "extmod"
Load "glx"
Load "dri"
Load "dri2"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbLayout" "no"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
Identifier "Card0"
Driver "intel"
VendorName "Intel Corporation"
BoardName "4 Series Chipset Integrated Graphics Controller"
BusID "PCI:0:2:0"
Option "AccelMethod" "exa"
Option "MigrationHeuristic" "greedy"
EndSection
Section "Device"
Identifier "Card1"
Driver "intel"
VendorName "Intel Corporation"
BoardName "4 Series Chipset Integrated Graphics Controller"
BusID "PCI:0:2:1"
Option "AccelMethod" "exa"
Option "MigrationHeuristic" "greedy"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
Option "LeftOf" "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "ServerFlags"
Option "AutoAddDevices" "False"
EndSection
Uhm do I only need one Screen section?

Is a dual monitor setup with 2graphic cards possible?

HI.
What i want to do is run Archlinux on my Desktop but i dont want to miss my second monitor.
I could use both monitor on my nvidia graphiccard but i want to use the energy saving features too (wich dont work with 2monitor on one card) therefore my windows setup is big monitor on nvidia and the smaller one on the intel onboard card.
They both get recognized by lspci but only the onboard cards isy being used (the onboard card is the first card on windows too).
So is it possible to get it to work? Id really want to use ARchlinux on my Desktop too but i dont want to use it with one screen or without energy saving?
Working compositing is a must, i want to use gnome3 wich is the only reason to swich to linux for the Desktop (arch is running on the laptop for ages^^) but i dont need to, Win7 is working flawlessly fine and i didnt have to pay for it (msdnaa).
Thanks in advance!

hy do you need to clock down your card?
Most gpu have a function that clocks down the card@idle and or desktop.
In my case thats down from 850mhz(560ti)to 200mhz while using windows and 50mhz if the gpu load is low.
Thats about 20watts less then with full clock.
The problem is, that the gpu wont clock down with 2monitors on it, it stays at 850mhz.
Theres some driver tweaks for amd cards wich "fix" thatfix this (i believe its intentionl, 2monitors equals more load but its no problem with new cards...
Thats one reason i use my onboard gpu for the second monitor, it works well with windows and also means that swiching off fullscreen (games) to the desktop works a lot better, the second monitor can play a movie while playing wich doesnt work with one gpu and fullscreen.
I really dont need that with Linux since i use it for work and multimedia only but the energy saving feature is nice if the pc is on 8hours and more wich is often the case.
Can you tell which one do you run? I'm going to buy one for dual-monitor setup, and I'm looking for something that will work for shure.
As said dual monitor on one gpu works, amd can do 3monitors while nvidia can do 2 at once, that means if u intend to use 3monitors some day with ur card u have to buy an amd card.
i took the nvidia because is can use it to render videos with cuda support (its not working with all tools yet but its getting better and if it works its a lot faster then my cpu rendering).
PS: Thats one hread about the power saviing with 2monitors:http://forums.nvidia.com/index.php?showtopic=197557
since my monitors dont share the same resolution it seems that theres no way to make it work .
Last edited by halfzware (2011-05-12 21:17:41)

X11 on a single screen in a dual monitor setup

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