Debian Multimedia :: Dual Monitor Setup - Two Identical Outputs
Sep 2, 2015
Just installed Debian 8, coming from Ubuntu12, it seems I cannot get my dual monitors to work as it should.
I want two monitors side by side, currently I have two identical outputs. I looked around a bit and register two possible problems.
root@bigcem101-debian:/home/bigcem101# xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 400, current 1024 x 768, maximum 1024 x 768
default connected primary 1024x768+0+0 0mm x 0mm
1024x768 0.00*
800x600 0.00
640x480 0.00
720x400 0.00
Hence, problem 1: it is as if there is only one monitor detected. Then I tried to look for Xorg.conf ..... and: problem 2 xorg.conf is not there. This seems to be normal but when I installed my Ubuntu years ago it was still there and one could manually set things. There must be something new I am missing.
Card:
VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV670 [Radeon HD 3690/3850]
It seems I have both ati and radeon installed.
root@bigcem101-debian:/home/bigcem101# X -configure
(EE)
Fatal server error:
(EE) Server is already active for display 0
I am clueless.
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May 14, 2010
I'm trying to get dual monitors working on a fresh install of debian from the netinst install cd. I did not allow the installer to download any packages and then manually installed xorg gnome-core & gdm using apt-get.
The monitors are plugged into the onboard vga and dvi ports of my motherboard. I believe the chipset is intel.
At the moment the displays are cloned.
I don't know much about xorg.
This is my xrandr output:
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Jul 22, 2010
I recently got a signal conversion box so I could route my netbooks monitor-out port to my TV. The idea being that I could effectively set the TV up as a separate monitor for watching movies on whilst I worked using the netbooks own monitor. It seemed to work initially, the Monitors dialog box could easily detect and setup the TV as if it were just an external monitor however I can't seem to play any kind of video on either screen when this is set up. All I get in Totem, Mplayer, VLC and skype is just a black area within the applications window. The sound works fine so this is clearly just a video problem.
It only seems to occur when I configure the system to use the TV as a separate monitor. If I tell it to display the same thing on both monitors all video output works fine.
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Feb 18, 2010
I've played around with a second monitor, but so far I haven't found a satisfying solution. I am using a laptop with a GeForce 9600M GS graphics card. I have managed to set up twinview, but my monitors don't have the same height so I'd rather have something like the "seperate x screen" option. Or how I imagine that option would be like. After some problems with the nvidia configuration tool (I couldn't change the xorg.conf, until I read this: [URL] I now have two separate screens, but the second one is all empty, with black background and X-shaped mouse cursor.
There seems to be no window manager running, I can start programs there with -display :0.1 , but they don't get any frame decoration and, which is worse, no keyboard focus. I'd be fine with a fullscreen konsole there, so I don't really need a window manager, but I do need access from the keyboard. I'd prefer a setup that would allow me to easily (without editing xorg.conf) switch between using both monitors and using only one, because I don't always use the laptop at home.
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Mar 22, 2016
I am wondering if it is possible to have programs remember which monitor they were last placed on when re-opening them?
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Jan 30, 2010
I want to buy a laptop with gma 4500hd WHAT I WANT IS
1. 2D AND 3D full support eg compiz, full functional kde4+effects (not to be slow)
2. full hd support
3. oss driver
4. ability for dual head monitor setup
searching in google find out that as fa as it concern the dual head setup there is a limitation on virtual desktop for older gma cards
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Jan 3, 2016
I have a Jessie with grub2. I've bought ssd and copied root partition onto it. I've also installed grub on this disc. I would like to have dual boot:
- First option: old root booted from hdd
- second option: boot from copied ssd and use root from it.
So i would have two identical but independent configurations.
Both disc has different uids (changed after cloning).
I had a hope that i will change fstab to mount root partition from ssd, but it doesn't work. I need to change grub configuration, but how to add new position?
There is also problem that bios doesn't allow me to choose disc to boot from. So i would rather prefer to change grub configuration for dual boot from different disc.
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Oct 1, 2010
The G4 has two cards with me only using one.Booting into Linux single then running Xorg -configure gives me the output on both monitors from both cards.Rebooting after this setup the mouse does not work. A hard reboot and a phigh reset the display previous defaults.Do I need to edit the xorg.conf.new or the xorg.conf?
xorg.conf.new
Section "ServerLayout"
Identifier "X.org Configured"
[code]...
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Aug 19, 2015
I'm trying to set up a dual monitor system with my Dell E7450 laptop with Debian Stretch and KDE 4.14.2. The graphic card is a Intel HD5500 with xserver-xorg-video-intel version 2:2.99.917-2. The first time I simply connected the HDMI plug, it recognized the monitor and it automagically set up the extended dual monitor. Then I unplugged the HDMI and KDE froze. Now every time I plug in the second monitor the laptop monitor goes black, the desktop goes on the external monitor and the mouse cursor moves only vertically along the leftmost edge of the monitor.
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Feb 18, 2010
Just got a pretty fresh install of Debian/XFCE. Both monitors work out of the box on my 8400GS. I was unable to find an option to change it so I can span is as 1 work space instead of having them mirrored.
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Apr 29, 2015
I have some very strange issues with my tripple monitor setup on debian wheezy. I have acer aspire V3 laptop with i915 Intel (Intel® HD Graphics 4000) as part of i3 and nvidia GT 740M which I never managed to get working with or without optimus to any degree whatsoever. What I want is a reliably working triple monitro setup. I have 2 additional DELL u2412m monitors which I did manage to get to work on few occasions by more or less randomly turning stuff on and off via lxrand and KDE systemsettings (so I do knwo for a fact that tripple monitor setup works). Arandr doesn't work, and executing xrandr from cmd doesn't work. I can relatively easily get the 2 monitors to mirror each other, but to get them to work separately is extremy difficult. It's always the same error but the well known crt. For example:
xrandr --output VGA1 --mode 1920x1200 --pos 3840x0 --rotate normal
xrandr: Configure crtc 2 failed
xrandr --output VGA1 --mode 1920x1200 --rotate normal --right-of LVDS1
xrandr: Configure crtc 2 failed
When it did work I copied arandrs script in hopes it would work, but it doesn't. Obviously, here is the issue that the crtc can not be configured so if somoen could tell me why and how to get the damn thign to use a specific crtc it would be awesome. Also, I noticed that when I hit "identify monitors" in KDE systemtools, it would say VGA HDMI for both VGA and HDMI outputs.
Here is xrandr output from when it worked:
Code: Select allScreen 0: minimum 320 x 200, current 5760 x 1200, maximum 8192 x 8192
LVDS1 connected 1920x1080+1920+0 (0x46) normal (normal left inverted right x axis y axis) 382mm x 215mm
    Identifier: 0x42
    Timestamp: 143521
    Subpixel:  horizontal rgb
    Gamma:   1.0:1.0:1.0
    Brightness: 1.0
[Code] ......
Here is now:
Code: Select allScreen 0: minimum 320 x 200, current 3840 x 1200, maximum 8192 x 8192
LVDS1 connected 1920x1080+1920+0 (0x46) normal (normal left inverted right x axis y axis) 382mm x 215mm
    Identifier: 0x42
    Timestamp: 5817108
    Subpixel:  horizontal rgb
    Gamma:   1.0:1.0:1.0
    Brightness: 1.0
[Code] ....
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Mar 9, 2016
In Debian Jessie Gnome with two screens, I would like to execute
xrandr --output HDMI1 --primary --right-of eDP1
xrandr --output eDP1 --rotate left
prior to showing the GNOME user logon screen. Unfortunately, all information I seem to be able to find on this appears to be relevant for pre-systemd Linux only.
The situation is that I have two monitors: One small tilted monitor on the left with 1024 x 768 which should be secondary and one larger landscape monitor on the right with 1920 x 1080 which should be secondary. Everything works persistently AFTER a user has logged on. However, after booting the system or after changing users, the small monitor becomes primary so (a) the user needs to logon using that monitor and (b) as the monitor is physically tilted, one needs to tilt the head to read it wihtout the xrandr commands.
If I can get beyond this issue, there is a second issue: While one can pick the primary and secondary monitor in Gnome, monitor numbers 1 and 2 seem to be fixed. This becomes a problem when using freeRDP to connect to a Windows server with dual monitors. Then, the smaller, secondary monitor is number 1 and thus, it is the Windows logon and primary screen. Is there a way to switch numbers 1 and 2 in Linux, for example somewhere in the grub configuration?
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Jan 29, 2016
I just switched from Ubuntu to Debian and I am having trouble doing something that I found easy to do with Ubuntu. I have a Radeon R9 graphics card from MSI with dual DVI ports and I'm trying to get xrandr/arandr to detect my dual monitors but it only detects one. I've installed all the drivers and even installed the "amdgpu" driver from the Ubuntu repository but still not detecting. What drivers am I missing?
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Mar 9, 2010
I am trying to set up dual monitors for lenny but nosuccess for the moment.
They were working fine for the same setup on ubuntu.
Using xrandr I get:
I read that virtual screen size could be the maximum part which is of no use in comparison to the current size.
So setting a virtual part in my xorg does not help much. If the above is right.
I have:
How to get the external monitor work in the extened screen mode.
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May 24, 2011
I have an external monitor attached trough a VGA cable to my laptop PC, with the monitor settings shown below. The problem is that when I have the external display connected, video players such as VLC or MPlayer display a black screen instead of the video, with only the sounds working. If I unplug the monitor everything works fine.
Setup Specs:
Dist: Debian Wheezy
Kernel: Linux 2.6.32-5-686
Gnome Version: 2.30.2
Laptop: Asus Eee PC 1000HE (10" LCD screen)
External Monitor: LG Flatron Wide L204WT, 20'' Widescreen LCD Monitor
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Oct 12, 2015
Pressing left, middle and right button of mouse at bottom and right edges or bottom left, top right and bottom right corners of the screen does not work with fittstool-2.0 on openbox in debian jessie with dual monitor.
Pressing left, middle and right button of mouse at top and left edges and top-left corner on the screen works correctly.
I use openbox on debian jessie. I do not install any desktop environment explicitly.
In the jessie, I installed gcc, make, libglib2.0-0, pkg-config, libcairo2-dev and libxcb1-dev.
I downloaded [URL] .... and confirmed that the sha1sum value of the downloaded file matches sha1sum value given at [URL] ....
I expanded the downloaded file by
Code: Select alltar -xvf fittstool-2.0.tar.gz
into fittstool-2.0 directory.
I executed with an ordinary (non-root) user:
Code: Select allcd fittstool-2.0
make
I executed with root privilege on the fittstool-2.0 directory
Code: Select allmake install
I executed the following with the ordinary user:
Code: Select allfittstool
and ~/.config/fittstool/fittstoolrc was generated.
I modified it as
Code: Select all[TopLeft]
LeftButton=gnome-terminal
MiddleButton=pcmanfm
RightButton=iceweasel
[Code] ....
gives:
Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192
VGA1 connected 1280x1024+1280+0 (normal left inverted right x axis y axis) 408mm x 306mm
1600x1200 60.00 +
1280x1024 75.02* 60.02
1280x960 75.04 60.00
1152x864 75.00
1024x768 85.00 75.08 70.07 60.00
832x624 74.55
800x600 85.06 72.19 75.00 60.32 56.25
640x480 85.01 75.00 72.81 66.67 60.00
720x400 70.08
HDMI1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
1280x1024 60.02*+
1280x960 60.00
1152x864 75.00
1024x768 75.08 70.07 60.00
800x600 72.19 75.00 60.32
640x480 75.00 72.81 60.00
720x400 70.08
DP1 disconnected (normal left inverted right x axis y axis)
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Dec 27, 2010
I am running Fedora 13 on a PC I built myself - MSI motherboard 785-E53. It has onboard DVI which my primary monitor is hooked to. I added an older 17" CRT to the onboard analog output and the main desktop with my icons and panels immediately switched to the CRT. Kernel is 2.6.34.7-66.fc13.i686, lspci -v says VGA compatible controller ATI Technologies Inc RS880 (Radeon HD 4200). How can I get flatscreen on the DVI output to be the primary?
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Jun 15, 2011
I created a dual monitor setup in Slack 13.37 using the KDE systemsettings -> Monitor Setup function. (Sadly I had to rebuild ~/.kde in the process, but that's a different story.)
I verify that ~/.kde/share/config/krandrrc contains the new monitor setup (both screens active). I have saved a startup session with krandrtray running. However, when I logon, the system always starts with both screens in clone mode. I always have to go into systemsettings or krandrtay and redo the dual monitor configuration.
Is there a better way? Do I have to create a suitable xorg.conf (which I will try when I get home) or is there another way to boot into the dual config automatically?
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Jun 19, 2010
I loaded Lucid on my system, dual booting w/ win7. I have two monitors, and i need it to have extended desktop view. How do i enable this?
Here is my LSPCI
Right now my monitor dislay is not want i wanted.
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Jun 29, 2011
I'm using the proprietery nvidia drivers on 11.04. I have a dual monitor setup with xinerama. The login screen appears to work fine, I can move my mouse between screens, and only one screen (right) has the login prompt. When I login, both screens show the same thing. While I can move my mouse across, I can only interact when it's on the left side.
I found this: [url], but I cannot start the display settings in the XFCE control center due to "missing randr extentions". Yesterday, I was using Kubuntu 11.04 on this same machine, and the dual monitor setup worked fine.
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May 20, 2011
I'm trying to get an external monitor hooked up to my laptop with the intention to use both simultaneously using TwinView. Actually, I'm not "trying to make it work": everything works fine, using NVIDIA X Server Settings. However, when I reboot these settings are lost and I have to manually expand my desktop again.
I've found that running NVIDIA X Server Settings as root should allow one to "Save to X Configuration File", in order to let it automatically load the right settings. When I click this option, however, I'm asked to manually provide a file name with my home folder as the default location. I'm confused how to proceed - where should I save this configuration? Or should I be taking a completely different approach in the first place? (note: KDE 'Display and Monitor' doesn't work. Only when I use the NVIDIA-thingy KDE will recognize that my desktop is expanded to a 3600x1080 resolution)
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Mar 10, 2010
I just installed Ubuntu 9.10 this evening. I have a Nvidia Geforce 8500GT video card with two monitors hooked up (one to the cards VGA, the other to the DVI). I installed Nvidia drivers and Ubuntu is working with both monitors fine.
The problem I am having is it chose the monitor plugged into VGA as the primary (uses that monitor for the toolbars) when I really want them to go on the monitor that is plugged into DVI. Is there anyway for me to switch which monitor Ubuntu treats as the primary?
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Mar 11, 2011
I am trying to setup a dual monitor on my system. I have gone through many posts and did the following.Downloaded EnvyNG to download relevant ATI drivers and eventually I got to a point where I can see that ATI is listed under Hardware drivers. But, from here, how do I actually set dual monitors?. I am looking for some interface like Catalyst, but couldn't find one after the drivers got installed. What am I missing here?I went back and forth, but after restarting the PC, the resolution goes to 800X640 and I have no option of setting dual monitors. I reset the options in /etc/X11/xorg.conf to let Ubuntu use the default drivers.
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Sep 1, 2011
When ever I install the (recommended) drivers through the "Additional Drivers" interface to run Unity my dual monitor setup does not work. The monitors won't even detect correctly what so ever. Then, when ever I install (more basic?) nVidia drivers through the packet manager, my dual monitors work as planned, but now Unity won't work. What's the deal? Are there any work arounds for this?
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May 6, 2011
I did set up dual monitors few times on few of my boxes, with 3 video cards :
Radeon 9250 AGP (have 2 of them) - with open source ATI driver
Geforce 6200 PCIE - with nouveau driver
In all cases I connect 2 LCDs. one 1440x900 or 1680x1050 to DVI and one 1280x1024 to VGA (all the cards have DVI and VGA out). The LCDs are the same ones tested with all cards :
1440x900 : Benq FP-92W
1680x1050 : Teac T2005L15 (identified as KTC2002 in xorg)
1280x1024 : Proview PQ-721KP
Tried on different boxes runnning Arch linux, different kernel / x / drivers / kde versions
Problem is - in all those setups, one monitor allways randomly blanks for a split second and comes back (incl. switching of the backlight, and displaying the "Source : VGA" or "Source : DVI" title as if it was switched off and on)
This happens randomly, but (more pronounced with the ATI cards) related to me clicking on stuff or the display changing (even if the changes are on the second screen)
With the Radeons only the monitor connected to DVI blanks. And the 2 radeons do it in different frequency, one is more often and one less
With the Geforce only the monitor connected to VGA blanks
When I test with 1 monitor (other one disabled in xorg) : Radeons sometimes still do that to DVI monitor but rare (much less than with VGA connected) (VGA monitor never blanks). Geforce does not do it at all and has problem only when 2 monitors are connected
I first thought its a hardware issue (the cards are from junk), but it happens the same with totally different hardware (exceps using same monitors) so i no longer think it is
There is nothing interesting in Xorg.0.log
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May 1, 2010
It used to work perfectly on Ubuntu 9.10 but I get "input not supported" in the secondary monitor.
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Mar 23, 2011
Right now, I need to use a dual-monitor setup. Be it for my casual desktop usage, or to my projects and programs presentations with a slideshow. The latter is critical and that's why I'm here.So, after some Intel Drivers update, some programs started to work nicely, faster and beautifully. But it corrupted my Dual-Monitor Setup. I don't know what to say, I'm totally desperate. I had to show one of my programs to my teacher using a projector, but with the dual monitor corruption, I called in sick today. I need to use the netbook screen to make changes on the program and the second monitor/projector to show the program working.
I'll show some pictures, but I'm without a camera right now, so I'll use one china-phone that's hanging around here to take a picture. Sorry for the quality. Both Monitors, you can see on the right of the bigger one the corruption I'm talking about.
[Code]...
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Feb 26, 2011
I was successful in getting the ATI catalyst software to set the displays to maximum resolution. The second display is dark. It shows a white "X" cursor if I move the mouse to the second screen. The KDE desktop configuration manager does not recognize the second monitor.
Here is the output of: cat /etc/X11/xorg.conf
Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
Screen "aticonfig-Screen[0]-1" 1920 0
[Code].....
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Jan 12, 2011
I have the nVidia GeForce 8500 GT 512MB graphics card, I put it in my system to get a speed boost and for a dual monitor setup, I don't have the proprietary drivers installed I tried installing them, and when I did it asked for reboot, so I did, and when it came back up only one monitor was in use, and it was running very very sluggish, so I opened up the Monitors from the settings and it said to use nVidia's thing, so when I did, I enabled the second monitor, and hit apply, and it asked for a restart of Xorg, doing that came back telling me that no monitors were find, and a reboot brings me straight to tty1... I tried both the recent version and the older one, both did the same thing, I really wanna get my Compiz effects back. is there a way to get this working? I will do anything you ask if it solves the problem...
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Jan 1, 2010
I have activated dual screen monitors using the Nvidia driver GUI as Sax2 would not correctly configure it. Now at every boot I get the message "undefined video mode 31a, press [enter] for a list of video modes or [space] to continue. After pressing space the system boots to my liking, how can I get rid of the message at every boot up?
I am using Suse 11.2 and KDE4.3.1 My video card is an Nvidia Geforce 7100 GS I thought I was using the Nvidia drivers as I have a GUI from Nvidia in my launch menu if I search "Nvidia" and I have completed the one-click installation. Although when I go into "My Computer" it says driver unknown.
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