Xorg is a full featured X server that was originally designed for UNIX and UNIX-like operating systems running on Intel x86 hardware. It now runs on a wider range of hardware and OS platforms.

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GNOME prevents high resolution VGA without EDID info over VGA

I recently bought a KVM switch, consisting of a VGA switcher and switchable USB hub. This switch however, does not pass EDID info from the connected display to either of the two connected computers. I ...
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98 views

Intel HD 4400 external display with linux

I'm having a Thinpad T440s with Intel HD 4400 graphics chip. The internal display works great. While an external monitor connected via Mini Displayport stays black. XRandR recognizes multiple outputs ...
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51 views

how to start into the x window server from linux mint ? [closed]

what do i have to do in the terminal in order to switch all the frontends of the xserver off, just to have the x window system running without any window manager or desktop environment?
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45 views

Left click not working on Ubuntu 12.04 LTS

My mouse left click stop working after few mouse clicks. I have used certain commands in terminal to get it working but that doesn't work. Those commands are: sudo apt-get install ...
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38 views

Get X's configuration

I have done some tests with 2 NVIDIA cards (not in SLI) and 4 monitors, with nouveau drivers. Debian 8 testing and Arch are not able to use the 4 monitors at the same time, but somehow Fedora 21 is ...
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65 views

Multiseat with one card and two Xorg instance

Is it possible to set up a multiseat environment with one graphic card and two Xorg instances? That is, one machine with a monitor/keyboard/mouse for the first Xorg instance and a second ...
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81 views

xrandr: add a new mode

I would like to add a new mode with xrandr, but I have a problem, xrandr don't want ! ~$ gtf 1280 1024 60 # 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz Modeline ...
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127 views

Setting DPI and monitors permanently

I'm running elementary OS Freya (based on Ubuntu 14.04) on a MacBook Pro 13.3" 2013 Retina and I'm having weird DPI problems: Some applications (eg Google Chrome) have no awareness of DPI settings ...
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18 views

What happens in the operating systems when I connect monitor to a VGA port?

I would like to study the behaviour of the Linux operating system when I connect monitor to a VGA port. What exactly happens inside the OS and the Window Manager, which parts of it are responsible for ...
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134 views

How to setup x11 touchscreen in linux desktop?

I am using opensuse desktop with two screens, top and bottom. Only the bottom screen is touchscreen, which is USB touchscreen. Both monitors are used as a single screen. I tried to configure the touch ...
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2answers
169 views

Unable to start X Server with no screens, no xorg.config to edit

I am trying to start the X server (I have all the packages installed). The problem I am having is that the server is offsite, has no screen and never has had a screen connected to it and as a result ...
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173 views

When running some X prog. remotely with ssh -X, it says “libGL error: failed to load driver: r600”

OS: CentOS Linux release 7.0.1406 (Core) Kernel: 3.10.0-123.8.1.el7.x86_64 When I run xcrysden (http://www.xcrysden.org/) remotely through ssh -X, it crashes with error: "libGL error: failed to load ...
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75 views

How do I exit the window manager on the current X display?

Let's say I have the window manager Blackbox running on two different X displays, e.g. :0.0 and :1.0 launched from tty1 and tty2 respectively. From a terminal (emulator), how do I exit (kill) the ...
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31 views

Input event for trackpad co-ordinates

I am making an app that requires the co-ordinates of the touch / swipe of the user. This is currently available only if you are running a VM ( Alt + F2/3/4/5...) using evtest. What do you think is ...
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12 views

Can I edit an event (gamepad)'s behavior?

Ok, so I'm attempting to fix my gamepad's (or rather, dance pad's) input, because the d-pad is acting like an axis rather than 4 buttons. I attempted to use xboxdrv, to no avail. So my question is, ...
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97 views

setxkbmap command and set local keyboard

Suppose the following code of shell: setxkbmap us ## set keyboard layout to English language ## OR setxkbmap ir ## set keyboard layout to Persian language ### OR setxkbmap ru ## set keyboard layout ...
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23 views

How to interpret information in brackets in Xorg.0.log?

Are the numbers inside the blocks are in some sort of date format? [ 1613.015] (II) config/udev: Adding input device HDA Digital PCBeep (/dev/input/event16) [ 1613.015] (II) No input driver ...
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32 views

Where to Calibration data

where can I find calibration data/setting stored in Ubuntu.
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1answer
192 views

Change the status of the keyboard leds, from within an X session, without root access

I am trying to force the capslock led on. xset does not work for me, so I am trying to use setleds. In a graphical console, this command returns: > LANG=C setleds -L +caps KDGKBLED: Inappropriate ...
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151 views

Triple monitors on Debian wheezy

I have nVidia GTS 450 on Asus Z97 motherboard. Today I bought a new screen, so in total I have three now - two 27" are connected to the GTS 450 card and one 20" is connected to the motherboard output. ...
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200 views

HiDPI scaling for non-aware applications

Current situation I have a 15" 3200x1800 screen, which is referred to as Retina or HiDPI. Using Linux Mint Cinnamon, I already have a desktop that scales nicely - but that's pretty much it. Besides ...
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85 views

CentOS 7 how to EnableBrightnessControl in xorg.conf

How can I set EnableBrightnessControl=1 in xorg.conf of a CentOS 7? File does not exist.
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1k views

Can another program on X capture my root password while I type it in a virtual terminal?

Usually I only install open source programs on my linux box because I don't trust closed source applications. Recently I had to use Dropbox for a university project. I created a separate linux account ...
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1answer
182 views

Running X without root

I have a kiosk-style host running Ubuntu Server 14.04. I'm trying to set it up to play some videos, TV-like. Sometimes it needs to play Youtube playlists and other web-based video streaming services ...
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34 views

How do Live DVD/CD/USBs detect video card and configure X accordingly?

I'm trying to create a USB that I can carry anywhere with my system on it, I know there are Live distros that can be used that way, but I need a very specific installation. The problem is that the USB ...
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37 views

Best way to connect to all X displays

In a C or C++ program, what is the best way to connect to all X displays on a computer? I would like to check the X idle time of each display, to determine whether the computer is idle across all ...
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132 views

How to enable Vesa driver in qemu

I am running Red Hat 7 into a VM using virt-manager (qemu) and it seems that it uses by default, Cirrus driver: 00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8] (prog-if 00 ...
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1answer
88 views

How to run Xserver with VESA driver on top using 24bpp

I am trying to trigger a bug, and to do that I need to run Xserver with VESA driver on top using 24bpp. I have qemu VMs with all sorts of distors (Ubuntu, CentOS, Debian, OpenSUSE), so please feel ...
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46 views

Run Qt Widget program on VPS with Xorg running over VNC

I want to start simple Qt program on my remote VPS. So I installed Xorg, BlackBox and x11vnc. It works good and I can connect to the server with VNC client. I see grey screen and if I run xterm & ...
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55 views

Decrease sensitivity for scroll on external mouse

I have a Primax HP Wireless Eco-Comfort Mobile Mouse that uses bluetooth, I think, to connect to my laptop; but scrolling with the mouse's wheel is really funky. The problem Scrolling is extremely ...
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1answer
136 views

Blank console when exiting X

I'm running Linux Mint 17.1, but this probably applies to most distros anyway. I just installed LM cleanly from a bootable USB (which is fine - I checked) and I need to install the appropriate ...
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249 views

Can't access virtual terminals after manually starting an X server

I'm working on a display manager. When an X server is already started, my display manager works fine and is able to log in a user. However, in order for it to be a proper display manager, it needs to ...
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27 views

How to get X output on two non-identical nVidia cards

I've been trying to get a second GPU (8600 GT) to be used in my system (main GPU is 780 Ti). The problem I'm having is that whatever I do, I can't get the monitor hooked up to the 8600 to display ...
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115 views

What does this `xhost …` command do?

Please help me understand this line of command: xhost +SI:localuser:lightdm in reference to the answer in this post and also suggest if there's a better way and why that's needed. I couldn't make ...
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102 views

X server periodically restarting for no reason

X has been periodically restarting for no reason. Its been happening once a week or a bit less frequently. Recently it has seemed to be happening more recently. It just happened again just now. It ...
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1answer
91 views

Can't get my secondary monitor to power on in X11

I have an ATI HD5770, connected to 2 monitors(DVI and DisplayPort). When booting up ArchLinux the TTY display is duplicated between the two monitors as excepted, but when starting the X server(Awesome ...
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1answer
219 views

Can an X video driver be restarted/reinitialized without loosing the session?

Have been experiencing problems with my laptop display usually brought on by interacting with graphics images in chromium web browser. When it happens the display goes haywire as if the horizontal and ...
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1answer
82 views

Reliable and persistent installation of the Nvidia driver on Centos 5

We have a bunch of computers controlling equipment that run on Centos 5. We also need to use the proprietary Nvidia driver, the default nv driver doesn't work correctly with some software we need. ...
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2answers
882 views

/etc/X11/xorg.conf.d missing?

Is xorg.conf.d no longer used by Arch Linux? If so, does anyone know where the configuration files that once lived under said directory now reside?
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46 views

Opensuse goes consol after booting?

I am new to opensuse. i have installed opensuse 13.2 gnome i tried to install nvidia drivers. after installing drivers . when i restart i go direcly to consol (NOT GUI) so i removed nvidia ...
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65 views

Does X11 still have a hardcoded limit for application resource strings?

The xterm(1) manual page states: Due to a hardcoded limit in the X libraries on the total number of resources (to 400), the resources for 256-colors are omitted when wide-character support and ...
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1answer
123 views

Rhel 7 not booting up

I recently installed rhel 7 on my laptop as dual boot (with windows 8.1) in UEFI mode. After the installation I cannot log into redhat. The gnome desktop starts to load and then it goes to a black ...
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102 views

How to setup touch screen for X11

I am running SuSE-based embedded system with a touchscreen. The embedded application is a graphics application which uses OpenGL over X Window for graphics. We have a user-space touchscreen driver ...
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48 views

Import Image from X11 Screen dosent work in linux

A long story in short, trying to automate an ISO setup/installation process In server(SLES11 SP2) running the installation scripts and virtualbox also installed in the same server. using rdesktop to ...
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1answer
33 views

Change X server configuration at runtime

Environment: NVidia video card with NVidia drivers. Debian 8. Multiple monitors I currently have 2 screens connected to my computer. Usually (while working) I like to use both. Sometimes (while ...
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27 views

Any tool to live patch X.org? I.e., reload X.org without logout and login

I'm trying minimize my number of reboots (it's a desktop Linux workstation), and I've found some nice tools that can reload the kernel without reboot: Oracle ksplice, SUSE kGraft and RedHat kpatch. ...
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Which activity/program prevents my monitor from going off?

I can set my monitor off with xset dpms force off but something prevents KDE from setting it off. On the other hand, when I play a long youtube video it might go off (!). This correctly happens after ...
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38 views

Xinerama misbehaving - drags to wrong screen

I am in the midst of setting up a new Debian workstation. Using one AMD HD 7870, I am running 3 screens. It took a little doing to get to the point where all three screens were showing up correctly, ...
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87 views

xmodmap keybindings don't work

I am trying to use Xmodmap to add some german diareses/umlauts to my keyboard, but Xmodmap is not working with them (but is with other remappings). I am following this guide: German Umlauts on US ...
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76 views

X won't start on its own after kernel update [closed]

I built a Fedora 20 home theater pc following the Fedora 20 nVidia Drivers Install guide. It did work well. However after yum update all ( in which the kernel was updated to 3.17 ) the machine boots ...