Ubuntu Multimedia :: Multiple Machine Multiple Display Wall?
Aug 4, 2010
We are working on a project to create a display wall of 8 monitors arranged as 2 high by 4 wide. Each monitor is connected to a single machine and all machines are networked with a master machine with its own, seperate monitor.
Our goal is to get the 8 machines to share a single desktop, with the master machine acting as the server. We have looked at using Xinerama or NMM, but we are unsure about how to get started configuring the multi-machine, multi-head display.
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Apr 28, 2011
is there a way to get multiple background wallpapers in unity, if so how
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Feb 25, 2010
I have a MacBookPro5,1 system that can boot into Fedora 12 x64 as well as Mac OS X. My installation of Fedora is set to use the nVidia graphics drivers to provide 3D acceleration when running the operating system natively. I have installed VMware Fusion on Mac OS X, and I can use it to boot my installation of Fedora into a virtual machine. However Fedora refuses to go into X Windows and just sits there with a blank screen. I can use Ctrl+F2 to switch to a command line and log into the system through the command line interface.
I'm not exactly sure why this is happening. However, I suspect that it is because when the system runs virtually, it does not make use of the nVidia graphics card. Instead VMware Fusion provides a virtual VMware SVGA 3D adapter. What would it take so that Fedora would use a driver that is compatible with this virtual display adapter when running in a virtual machine, and then use the nVidia driver when the system boots natively?
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Dec 3, 2010
I'm using a NVIDIA 9600M GT on my laptop running Ubuntu 10.10. The laptop has a 16:10 display, I also connected my 16:9 LCD TV via HDMI. I would like to use them as clones. The problem is, as my TV has a different aspect ratio than my laptop display, the image does not fully fit on the TV. For example, when using a resolution of 1280x800 (16:10), one tenth of the width of that image is missing on my TV, as it has an aspect ratio of 16:9.
In Windows, the NVIDIA software stretches the image so that it appears a little distorted on my TV, but at least I see everything. Is it possible to do that in Ubuntu?
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Oct 20, 2010
I've a display issue after upgrading to 10.10 . I have a Dell Inspiron notebook with an ATI 1200 chip set. Prior to the 10.10 upgrade I could connect a higher resolution monitor to the VGA port and hit Function F8 to switch my display from the notebook display to the external display to take advantage of the higher resolution of the external display. With the 10.10 upgrade when I switch to the external display I have no window management functions, ie I can't resize or move windows because there is nothing to grab onto. If I click the show desktop icon I get a message to the effect that the function isn't available for GDM "unknown".If I used mirrored displays with the external and internal displays at the same resolution then I do have window management functions.
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Jun 22, 2011
I'm trying to get 4 monitors working in Ubuntu 11.04 the way I would like to. I have two Radeon video cards with two monitors connected to each. With proprietary ATI drivers and the Catalyst Control Center I'm able to see all the monitors and Have Multi-Display setups, but they're separated for each video card. I can move items to and from Monitor 1 to Monitor 2, and Monitor 3 to Monitor 4. I'm not able to move windows from 2 to 3 or 4. The two separate display setups have their own set of workspaces too. I've tried enabling xinerama, but when I log back in after a restart the screen is just black and I'm forced to reboot manually. The two separate displays wouldn't be that much of a problem except that my keyboard doesn't seem to work on any application opened on monitors 3 and 4 after I've clicked on something in Monitor 1 or 2.
Below is one of the configs I've been messing around with:
Code:
Section "ServerLayout"
#Screen "amdcccle-Screen[2]-0" 3840 0
#Screen "amdcccle-Screen[1]-1"
Identifier "Layout0"
[Code].....
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Sep 24, 2010
My ubuntu 10.04 has two monitors connected both being treated as individual desktops.But only one desktop is showing the wifi network icon in the notification area.Is it possible to have more than one wifi icon going at one time?
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Jan 12, 2011
I'm using Ubuntu 10. I want to apply different themes for desktops.. I want to apply windows 7 theme,ubuntu, mac os themes for my multiple desktops
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Jun 14, 2011
have a large amount of 7z files in multiple folders which I need to extract.The directory structure is like this:
/main-folder/
multiple subfolders/
1 or more 7z files per subfolder
I would like to get the output of this action in one separate folder, all together in 1 folder.How can I do this?
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Aug 20, 2011
I often use the rpl command to make changes to multiple html files at once. For example:
rpl -R '<br />' '<br /><br />' mydirectory However, I haven't been able to figure out how to change multiple lines. For example, let's say I want to change all occurrences of :
<br />
<br />
to:
<br />
I've tried
rpl -R '<br />
<br />' '<br />' mydirectory
but that didn't work. how to do this with rpl or some other way?
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Mar 16, 2010
how to setup multiple instance of postgre server on the same machine.
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Oct 26, 2010
I'm trying to connect one computer to two others in an ad-hoc infrastructure.
[computer 1] ---- [computer 2] ---- [computer 3]
computer 2 is running Linux and has a single NIC wlan0. I want to it to connect to both computer 1 and computer 3 so each computer can talk to the other. No switch is available so it needs to be an ad-hoc setup.
[Code]...
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Aug 23, 2010
I am to rename all the files within a directory (which contains multiple subdirectories) recursively without invalid characters.
I tried the coding posted above.
find . -type f -printf '%p
' | while read file; do
oldfile=$(basename "$file")
newfile=$(echo "$oldfile" | sed 's/[^A-Za-z0-9_.]/_/g')
if [ ! "$newfile" == "$oldfile" ]; then
echo mv "$file" "${file%$oldfile}$newfile"
code....
but I get an error on both of them stating "find: bad option -printf find: [-H | -L] path-list predicate-list"
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Jun 4, 2010
I'm starting to have A LOT of opened windows in my machine. Sometimes within a project, I have e-mail/task management/personal e-mail/twitter, and a lot of different opened applications/terminals in my Linux workstation.Sometimes it would be interesting to have different workspaces to projects instead of this configuration I have nowadays that are classes of work (bad name, I know, but I think you got the idea).I'm starting to think about using two monitors: one with Corporate Management, Work and Personal. The second monitor is only the development state: each workspace here is about a project being worked on instead of groups of works like before. A workspace may be implementing different classes for example.
My question is: I just want to change to a second monitor using the mouse. I want to still be able to change workspaces in the same monitor using keyboard shortcuts. The keyboard shortcuts wouldn't change monitors, just worskpaces on the same monitor. All the tutorials I read (like this one) only tells how to use multiple monitors but doesn't answer my question about keyboard shortcuts.Does Linux (Ubuntu 10.04 Lucid Lynx or Debian 5.0.5 Lenny) support this envisioned setup (Different workspaces in a way that keyboard workspace switching only works in the current monitor) ? If so, how?I haven't tested this setup, that's why I'm asking. In this question the user says it works exactly how I want it to behave, can someone else confirm it?
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Apr 28, 2010
What's is the most efficient way to install multiple concurrent Java JDK versions on the same Linux machine?
I need Java5 whilst my current Ubuntu 9.10 Karmic comes loaded with Java6.
I know I could setup a VM for this but I am looking for alternatives.
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Jun 14, 2010
I always keep my headphones as well as my 2.1 speakers connected simultaneously on my PC (Gigabyte motherboard). Both these audio devices work fine simultaneously on my Windows 7, but in Ubuntu, only my headphones work, speakers don't work at all. I tried changing some settings in SOUND PREFERENCES as well as ALSA SOUND MIXER, but not luck so far.
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May 20, 2010
I have an old pentium 3 computer that has ~7 NICs installed. These NICs are attached to modems and other networking equipment. According to the linux ping page on computerhope.com, it seems that one could send a ping from a certain specified NIC. How would one go about this?
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Feb 7, 2011
I'm looking at setting up a couple automated systems: Here are a few examples:
* Internal accounting system to download and process emails
* Public web server to visit
I could put each system on its own separate box -- for example, it's generally good practice to separate anything that external users have access to (such as a webserver) from internal processes such as accounting. Now, rather than dishing out the money for two separate servers, could I get away with just installing new instances of VMWare on the same box for each system?
To give you an idea, these are not large scale computationally sensitive systems. The accounting one is simply downloading and tallying emails, and the latter is just a webserver with maybe 5 hits per day on a good day. I could definitely pick up a new box for say $50, but I wanted to know the general practice of using VMWare on the same box versus two separate boxes.
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Dec 16, 2010
How to search multiple words in multiple lines, inside a directory including sub-directory? Pls. give easy example. I want to search the files (in /xx folder and all subfolders) that have header.h included and used x() function. I tried $grep -r "header.h" | grep -r "x(" /Folder/subfolder/ > search.log
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Jun 16, 2009
I have a CentOS 5.3 box with three network interfaces in it. Each interface is attached to a separate VLAN and I want traffic to stay on each network segment.What I can�t figure out is why I cannot get each interface to have its own gateway and everything gets sent through the default gateway.The basically takes my possible 3Gb total bandwidth and throws it down a single 1Gb pipe.Then on top of that, if I take down the interface (ifdown) that has the current default gateway,I loose contact to the other two interfaces.When I look at the routes, each one of the interfaces shows the gw as 0.0.0.0 and defers to the default route. So I delete the route and try to add a new route with:
[root@testsan ~]# ip route add 10.1.15.0/24 via 10.1.15.1 dev eth2
but end up with the error:
RTNETLINK answers: Network is unreachable
[root@testsan sysconfig]# cat network
NETWORKING=yes
NETWORKING_IPV6=no[code].....
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May 27, 2011
Upgraded from FC14 X64 to FC15 X64 yesterday. I've used gnome2 forever, its worked very well for me.My workstation has 4 displays driven by two nvidia cards. One with dual dvi outputs, the other with one dvi one vga. I use the proprietary nvidia driver, NOT nouveau. Each card ties its displays together with twinview, and then xinerama spans across the who cards. This worked splendidly on gnome2, WITHOUT compiz. I used to use compiz when i had two displays so that I could have nice wobbly windows and transparencies, all very nice, but the extra area of the 4 displays was much more important to me. See, xinerama breaks compiz.
When i upgraded from FC14 to 15, my displays went amok, i ended up having to upgrade my nvidia driver, an then couldnt get things working in gnome 3. Finally i fell back to kde, kde4, and lxde both work just as gnome 2 did with my 4 displays. Gnome 3 with Gnome-shell fails spectacularly. Even if I fall back to two displays on one card, its wonky, things dont display properly, and the overview sometimes breaks such that it wont even come up anymore. Gnome3 without gnome-shell also does not work, in fact, i cant even get into gnome, it gives me some error and logs me out when all 4 monitors are enabled, and with only 2, it works, but.. well.. I want my 4 displays!I'm almost certain that compiz is to blame. Gnome's "Fail safe" uses compiz, and i'm betting the compiz isnt working on my 4 displays, causing said error and logout. I have no idea what the heck gnome-shell is doing. It actually displays on two monitors, while the other two are black. The mouse is able to display on all 4, i'm unable to interact with the displays which show gnome, but the displays which are black, seem to respond to my clicks, but they respond on the two montiros which display gnome. Very strange.
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Dec 7, 2009
I have a program that attaches to an interface. I can run two copies of the program on two systems (each running one instance), connect it to a switch, say 1.1.1.1 & 1.1.2.1. In this configuration two instances of the program can communicate and everything is fine.Now, to reduce cost, it want to use only one system with two nics connected to the same switch, running two instances of the above program, each instance attached to two interfaces respectively on the system. I have the following settings:
eth1 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX
inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
However I cannot ping one from the other.
Neither "ping -I eth1 1.1.2.1" nor "ping -I eth2 1.1.1.1" works.
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Dec 13, 2010
I am find myself in need of building what amounts to 3 ip networks on 1 physical lan.
first LAN is another companies network on the 10.0.0.0 network a mix of pc's and equipment
second is LAN new company network 192.168.168.0/24
third network is an ip phone system for both i would like to use 192.168.200.0/24
i am hoping to use the same dhcp server to do this, assigning address to the old company's 10. network via mac address reservation.
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Nov 26, 2010
I am searching for a way to have multiple sessions or users on the same vnc server. I have a machine that I need to remotely access as root (for admin purposes) and as myself (as the normal user) the rest of the time. I probably will never have to remotely login at the same time as both root and myself (I am not that multitasking!)I searched the web for almost 1 hour without finding anything useful... Right now my /etc/rc.d/rc.vncservers.conf looks like:
[code].....
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Jul 12, 2010
So essentially, I have 3 monitors and i'm attempting to run 2 different window managers/sessions at once split up on the monitors. It is intended to be like this:
Code:
[GNOME/Compiz - Screen0]
- Left Monitor[code]......
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Jul 30, 2010
I've just got a question about this. What if you wanted to change only the display sequence in Grub 2 (Ubuntu 9.10) and not which o/s boots first or is the deault o/s? In previous versions of grub you could just copy & paste the lines in /boot/grub/menu.lst, but this version of grub doesn't allow you to edit /boot/grub/grub.cfg...
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Jun 1, 2010
I have this intra net server project going on and now I moved to 10.04 however there are still some things that I would like to see clarification and instructions on. I am interested to set up multiple parallel websites for my apache server, however I am not sure how to do this exactly. Now I have solid address rivera.wippies.net and port 80 redirecting to my server. What I would like to get done is that I get multiple independent of each other websites for my server I was thinking of making websites like this
/var/www/site1 (which would be as rivera.wippies.net)
/var/www/site2 (which would be as rivera.wippies.net/othersite)
/var/www/site3 (which would be rivera.wippies.net/secondothersite)
etc, so that I have multiple "individual" websties for my server. Requirements would be that each of these websites could have SSL encryption as needed available too, since some of the website could have confidential information.
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Apr 4, 2011
Sorry for the hard to understand title but it's difficult to describe in one sentence. What I'd like to do is install Windows and several different versions of Linux on the same system. After everything is installed, I'd like to switch between operating systems *from inside the operation systems*.
Example: I'm inside Windows but I want to reboot into Ubuntu 9.04. I need to run a command to update the boot manager so it knows to boot into Ubuntu 9.04.
I do not want to walk to the physical box to make a menu selection. EDIT: I'd like to be able to switch between Windows 7 and Ubuntu (9.04, 10.04, and 10.10)
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Mar 5, 2010
I am curious if yum can be used to export a list of packages from machine 'A' then I can take it to machine 'B' and import/install the list so my machines all have the same software.
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Jun 1, 2011
I'm getting used to gnome3 one thing still bugs me- why when I switch workspaces on my multiple monitor machine does only the primary monitor change to a different workspace? The secondary monitor (my laptop screen) shows all open windows I put on it plus it's not even shown in the workspace list.
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