Hardware :: Momentary Blanking Of Screens With Dual Monitor Setup
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
I recently upgraded my 10.04 installation to 10.10 and ever since my dual monitor set-up has been behaving oddly - my secondary monitor randomly goes black for a second and then comes back as normal. I've tried to reproduce it with no luck and it isn't something I experienced with previous installations so wondered whether it's a known problem with 10.10? NVidia Quadro NVS 290
with KDE everything works fine (both monitor show their configured displays correctly), however oddly with gnome when i try and setup dual monitor display, i get blank screens on both monitors, however on the display 0 on the left side there is a full column single pixel width green strip. the rest of display 0 and 1 are blank, however my mouse will move around both display correctly.
I'm having some issues getting my two monitors (both 1600x900) to work well with Xinerama. The first thing I'm having trouble with is getting 1 wallpaper to span across both monitors..from what I've googled it's sounds like I'm not the first either The 'span' function in the change wallpaper window doesn't do it. The second thing is that I would like the panels to stretch across both monitors well, or at least be able to create another panel on the 2nd monitor which I can't do now.Here's my xorg.conf file:
Setup:Ubuntu 10.04 recently upgraded from 9.10Dell Precision m63004G RAMCore 2 DuoDual Monitor with laptop=screen0 monitor=screen1external mouse and keyboardIssue:In both 9.10 and 10.04 (I am just now trying to solve the issue) the setup works great, but not flawless.External mouse and keyboard work with no issue.The touchpad mouse on the laptop, however, will not switch from screen1 to screen0. It works fine on either screen and will go from screen0 to screen1, just will not return. One has to hook up an external mouse to get the cursor back onto the laptop screen0.
I have my computer set up to use separate x screens for both of my monitors and almost everything works perfectly. With this set up I don't have any problem displaying flash in full screen on either monitor like I had with twinview. I have it set up this way so that I can use my TV to display mythtv and still use my computer monitor to browse the web, etc. The only problem is that I use my iphone with hipporemote to give me a wireless keyboard/mouse. When using twinview this was not a problem as it was just one large desktop spread over two monitors.
However, switching to separate x screens seems to have broken the functionality of the vnc server. When using my physical keyboard and mouse I can just move the cursor off the side of monitor 1 to control monitor 2, however, if I'm connected via vnc the cursor gets "trapped" inside the active monitor. I can interact with each screen as expected but if I want to switch the mouse/keyboard focus to the other monitor I have to go to the computer and move the mouse to the desired monitor, which obviously defeats the purpose of using the iphone as a wireless remote.
So my question is this. Is there a way to assign a hotkey combination to switch the focus of keyboard and mouse that the vnc server is controlling? Or could I set the vnc server to only control one of the two x screens?
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?
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?
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.
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
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'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)
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?
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.
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.
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?
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.
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.
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.
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...
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.
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.
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
I need some help getting my dual monitors working in Fedora 12. I've tried some things from other posts and a few things from various websites and wikis (Gentoo), but nothing I've done has worked. To be honest, I can barely remember what I've tried and what I haven't anymore, because I feel like I've gone in circles.The card has one DVI out and I'm using a DVI-splitter to connect the two monitors. This configuration works on my Windows 7 boot. Also, the second monitor is detected, but shows no display.
I was wondering when and/or how to get multiple screens setup and working in unison. Currently I have 3d rendering working but all of my screens work as separate desktops. They all have their own start menu and panel bar. I cannot move a window from screen to screen. I have to open a new window in that screen and then it is stuck on that screen and can not be move any where else. When is this going to be fixed because until it is unfortunately Micro Slop will still have my business. I am a power user and enjoy my 4 screens when they work in unison, not as individuals.
I use multiple screens on my computer in work which is running Ubuntu 10.04 it runs great apart from the VBox VM. I run a windows VM as some apps we use in the office are not compatible with ubuntu and I can't get them running right in wine. In single screen mode I use the VM in 'seamless' mode so the windows start menu just sits on top of the ubuntu panel and I can flip from ubuntu to windows as I please in the same interface (im sure anyone that uses VBox will understand what I mean).
The problem comes when I use a second screen. If I try to run in seamless mode on the main screen it works ok apart from the fact that the windows start menu sits behind the ubuntu panel instead of on top of it. When I move the VM to the second screen I cannot run it in seamless mode at all, if I try the resolution goes hay wire and I only get half the screen (if im lucky). So I just run it in full screen mode which stops me from dragging windows from within the windows VM back to the first screen.
What I want to be able to accomplish is to run the VM in seamless mode on either screen but be able to drag windows accross both screens. Is that at all possible?
This happened after ubuntu pushed an nvidia graphics update about a week ago, on upgrade I booted up into this:Obviously I had to take this picture with a camera, since a screenshot only showed one screen. It's perfectly usable like this, except that it's too small to read.I of course have tried 'sudo nvidia-xconfig', and a minimal xorg.conf:
Along with purging and reinstalling all of the nvidia packages numerous times. I'm currently running on the VESA driver, which sucks. My chipset is a 9200M, but like I said, it worked perfectly before the last upgrade. In all my years of using linux and kubuntu, I've seen and fixed numerous nvidia driver errors, but I've never seen one this strange, usually it will run or not run.
One computer running F12. NVidia with 2 CRT outputs, and one S-Video/TV output Standard PS2 keyboard and mouse USB (wireless) keyboard and mouse Sound card w/ Optical SPDIF, and standard analog front/rear outputs
At present, I have CRT-0 connected to a standard monitor that I can get resolutions up to 1920x1440. TV output is connected to a flat panel monitor, with a max resolution of 1024x768. SPDIF audio output connected to TV system, and analog output (front only) connected to destop speakers. Note that the monitor/speakers are in one room, and the TV w/ SPDIF audio is in another, with the USB kbd/mouse.
I can get a cloned twin view set up on both, with the USB kbd & mouse/TV/SPDIF mirroring the monitor/PS2 kbd & mouse/speakers - but only at a max resolution of 1024x768. That by the way needs to be the virtual screen size for the TV. If I want to switch between the two max resolutions (one when using the monitor, the other the TV) I have to edit xorg.conf and change the modes line for the display, then restart the X server.
I would like to have the monitor set up to its max 1920x1440 resolution with a virtual screen size the same, and the TV set up for 1024x768 with that for its virtual screen size. I also would like the separate kbd and mice to operate with the respective screens. Ideally, each screen would be independent of the other - running two different apps on each output, similar to separate workspaces. Is something like this possible? It's a pain to have to re-edit xorg.conf and restart X every time I want to switch from watching TV to working on my monitor.
