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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How is Xserver able to tell which device is a mouse or a keyboard?

In these days we don't have to create a custom configuration that sets our devices up, at least when it comes to Xserver. But sometimes you want to change some default parameters. When you do it, you ...
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Is it possible to configure a 'scaled' desktop in xorg.conf similar to using xrandr's scale-from option?

I have a 14 inch ultrabook with a resolution of 2560x1440. I currently run Gnome 3.16 in HiDPI mode with a scaling factor of 2. Since I'm unable to specify a factional scaling factor, like 1.5, I've ...
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Is it possible to force an OpenGL application to use adaptive vsync?

The Windows nVidia control panel allows one to enable adaptive vsync globally or on a per-application basis. On the other hand, while on Linux nvidia-settings has an "application profiles" tab, it ...
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gray highlighting is gone

Gray text highlighting no longer works on my Debian/stretch system. Neither in Emacs for indicating the selected region, nor here in the browser editor for text within backticks. Which system level ...
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469 views

OEL6 Slow boot && Millions of socket files in /tmp/orbit-gdm

Background on question Lately I've been having some trouble with slow booting on the servers, sometimes over 2 hours to boot stuck on "Enabling Local Filesystem Quotas:" After searching I managed to ...
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35 views

Can I configure a touchpad to act as modifier keys in some circumstances?

I have Debian and use Emacs a lot. I have an idea which could help me in using modifier keys. Currently I just switch the touchpad off when using Emacs, with this command: synclient TouchpadOff=1 ...
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Not getting 3d acceleration on one of two GeForce graphic cards

Running Debian 8. I have a GeForce 6600 GT and a GeForce GTX 460 SE. I was using the 340.65-2 driver, whatever the standard nvidia driver is in the repos, but that doesn't support the 6600. So I ...
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Configuring keyboard layouts: 3-way switch, 3rd layout when CapsLock is on

I'm trying to configure my keyboard in this way: I have 3 layouts, 2 of which I use fairly often (eng, rus) and 1 I use occasionally (e.g. when I'm writing some official letters) - cz. The difference ...
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How to make startx open new X Session in tty7 on Raspberry Pi?

Before, when I launched x from the tty1 console, it would start the x session in tty7, allowing me to terminate it easily from tty1. Now (I do not know what changed it), startx from tty1 will open X ...
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Debuggging `Maximum number of clients reached … unable to open display “:0”'

I am running an openSUSE Tumbleweed installation with KDE Plasma 5.4.3 . I tend to use a fair number of programs ( Eclipse, Firefox, Slack, Evolution, Konsole, various java applications ) and after ...
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121 views

intel driver on nvidia optimus laptop not recognizing internal display

I have a ThinkPad W520 laptop with an nVidia optimus display. I recently upgraded my linux system to linux-4.2.5 and nvidia-358 and now I cannot get the internal display to be available for X11. ...
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qt4 applications don't work in Xephyr

I am using Xephyr to run applications as another user, while being logged in as primary user. Most applications work fine in Xephyr, except qt4 based. Specifically: electrum ipython qtconsole ...
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113 views

How does GUI in Unix/Linux actually work? [duplicate]

I am a beginner and I need some clear explanations on the following questions. What is Desktop Environment? What is Desktop Manager? What is Display Manager? What is X window system, server, X11 ...
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Fatal IO error 35 - X problem

Edit: Everything works well on OpenBSD 5.9 Good job! I have a problem with running X on my OpenBSD 5.8. Hardware is Lenovo m57 USFF with Core 2 Duo and Intel GMA3100 graphic. machdep.allowaperature ...
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61 views

Return to GUI from text console with many X11 servers?

I know the thread How to get out of TTY and into X session apparently about similar thing as here, and Command line to return to the GUI after Ctrl-Alt-F1 about chvt. I have Ubuntu 14.04 LTS. I run ...
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46 views

USB automount call another x-session

I have FreeBSD 10.2 installed with Openbox as wm. When I put flash drive in USB new instance of openbox starts automaticaly. I don't undestand why. /etc/rc.conf # Hostname hostname="dark" ...
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Low resolution caused by No valid modes for “DFP-0” - Mint-17 NVidia

I don't seem to be able to configure xorg.conf to increase my monitors resolution (currently running at 1280x800). I've been working on this for several hours. I'm new at all this, so I can't figure ...
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799 views

Xorg on skylake graphics hangs

I've bought msi gs40 that has intel i7 6700HQ which means integrated graphics hd 530. After a day of struggling I was able to start xorg with HD530. For this I addes i915 to initramfs and ...
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267 views

Need help configuring Xorg.conf for 6 monitor Big Desktop

Update: Here are the some things I have attempted when I had some time to battle this. Linux mint is the only distribution which for some reason Randr can see all 6 monitors. I can configure and ...
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libnvidia-glsi trying to load after NVIDIA kmod removal

On Fedora 23 I removed my NVIDIA kmod package and anything NVIDIA related as I am replacing the card with an AMD card. The radeon driver seemed to go in fine, everything looks good but X crashes ...
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108 views

Determine which graphics driver Xorg uses

on a fresh Arch Linux installation i had difficulties with the graphics drivers. In the process i have installed a lot of different drivers to somehow get the display working. Now i need to ...
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84 views

Automatically take screenshot of specific display in X

For creating a time lapse on a system running X with two screens (actually it's one "screen" on two "displays"), how do I take a screenshot of one of the screens? xrandr output is (abbreviated): ...
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34 views

Why is my mouse pointer keep jumping to the right side of the screen?

My mouse pointer keeps jumping to the right side of the monitor it's on roughly once per minute. I disabled psmouse and usbhid and the same thing happened, so it's probably not a mouse/touchpad ...
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989 views

Arch Linux: gdm gives “Oh no something has gone wrong…”

I recently decided that I will no longer use Ubuntu and give Arch Linux a shot. I did everything according to the Beginner's guide on Arch Wiki, which worked. Next I wanted to install the Cinnamon ...
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303 views

HD 530 + GTX970 = blackscreen with nvidia optimus

I just bought msi gs40 6qe. This laptop has skylake core i7 6700hq (which means integrated graphic HD 530) and discrete GTX 970. I'm struggling to start xorg on archlinux. I'm trying to run xorg ...
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setting up xorg.conf for LG Flatron E1942

I have a LG Flatron E1942 monitor and I am trying to make it work under OpenIndiana (OpenSolaris). The specific version I am running is using X.Org X Server 1.7.7. I have followed the instructions at ...
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697 views

2560x1440 resolution over HDMI with a laptop with NVIDIA Optimus and Ubuntu 15.10

I attached a new 2560x1440 display (Dell P2416D) with HDMI to my dual-booting laptop (Asus N56VJ) that has NVIDIA's dual-GPU technology. In Windows 8.1 I got the display to run with its native ...
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1answer
782 views

X server only starts as root

I have an Arch Linux system, stock kernel and drivers. For some strange reason, xinit produces an error when it is started by a non-root user. The logs say this: (EE) parse_vt_settings: Cannot ...
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697 views

Laptop Touchpad suddenly not working on Arch Linux

I've been struggling to get synaptic to work properly since installing arch on my laptop about a year ago, and its finally broken completely. I need help figuring out why, as nothing I've done in the ...
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1answer
39 views

Is it possible to have xrandr in different modes based on workspace?

Is it possible to have xrandr at --right-of the screen in workspace1 and --same-as at workspace2? (I'm using openbox) If you interested why i want to do this: I'm having a presentation and i need to ...
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116 views

Unable to run Sugar on Arch Linux due to PyGIWarning

Installing Sugar environment on Arch. I just installed a fresh Arch Linux just to run Sugar on it. After downloading sugar from AUR using yaourt -S sugar I wanted to run Sugar using sugar-runner ...
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173 views

Installing Xorg on ASRock AM1H-ITX (Xen DomU Arch-Linux LXQT): startx and no screens

Dom0: Arch Linux DomU: Arch Linux The problem seems to be that the DomU can't find the Video Card. inxi -F (DomU) System: Host: ArkOS_Dev Kernel: 4.2.5-1-ARCH x86_64 (64 bit) Console: tty 0 ...
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1answer
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manually redirecting X output through ssh

I have a remote server, on which I am able to log in with ssh. However there is no home directory for my user. When I try to ssh -X to that server, ssh tries to put a cookie into ~/.Xauthority which ...
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xrandr, xorg test screen error — default seems to be only valid mode

Running Arch Linux, kernel 4.2.5-1, Lightdm 1.16.5, xorg-server 1.17.4-2, nvidia 255.11-4, GTX 780 dual-link dvi out. I have a QNIX Evolution II 2710 and am attempting to overclock it but am running ...
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83 views

Using PRIME hybrid graphics while running Xorg as normal user

I am running Debian and recently updated my Xorg. This seems to have caused the issue that: xrandr --setprovideroffloadsink radeon Intel Crashes the X server with message: xf86EnableIOPorts: ...
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35 views

Xorg Xserver: query number of screens

How can I query the number of active screens of an xserver from a bash script?
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195 views

CentOS7: remove nvidia-x11-drv-340xx wants to uninstall the whole xorg

I need VNC xorg access to a headless server. So I installed, like I did for a twin one, Gnome and all the stuff. By mistake I had elrepo repository enabled, and when installing gnome I had it ...
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Xrandr handing in Gnome 3

Some time ago I opened this question on SE. In a nutshell, I am running: Debian 8 stable, updated; Intel graphics i3wm, no DE running when I use just i3wm. Also have Gnome for fallback solution (in ...
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373 views

X broken after upgrade to Fedora 23

I recently upgraded from Fedora 22 to 23 via the dnf plugin, and everything else works fine except for graphics. The fglrx module appears to load okay, but the X server crashes when it tries to open ...
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256 views

centos 7 freeze mouse and keyboard [closed]

In CentOS 7 after I update my system (kerne etc) my display does not work. I reinstalled nvidia driver with nvidia-detect and when I: startx, the system display my desktop environment but mouse and ...
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88 views

Is SteamOS frame-rate performance related to X11?

Ars recently tested SteamOS against Windows 10 and determined on average Windows 10 had a higher frame rate. Does this have anything to do with Linux's reliance on an archaic graphics system (X11)?
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Xorg-server 1.16+ on CentOS 7

Due to an accessibility bug I cannot use Xorg-server 1.13 through 1.15. I see that CentOS 7 uses 1.15.0. Is there any way to use a later Xorg-server in CentOS 7? Fedora 23 has Xorg-server 1.18.0, is ...
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how to fix EDID conflit?

my screen is going to randomly flash to black from time to time. In Xorg.0.log, it says: [ 137.409] (WW) NVIDIA(GPU-0): The EDID for AOC 2769M (DFP-1) contradicts itself: mode [ 137.409] (WW) ...
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130 views

Network namespace, ssh, X11

I connect (via ssh -Y ...) from a machine (=client) to another machine (=server, actually in my LAN, but it is irrelevant); then I start a new network namespace (NNS, for short) on the server, I start ...
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is it possible to increase the xorg log backup level in ubuntu?

I thought it was 3 before. But right now it only keeps Xorg.0.log and Xorg.0.log.old. Can I increase it to 10 or some other value? It seems the logrotate does not affect the Xorg.0.log at all. ...
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548 views

DP 1.2 / Daisychaining2 Monitors on Linux Mint / XPS13 2015

I'am at the edge of giving up on my dual monitor (daisy chaining) setup with Linux Mint. I'm not quite sure if this problem is specific to Mint. Setup: Dell XPS13 2015 2x Dell U2415 What I ...
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How to detect if an application has “grabbed” the X server?

Related to this known xautolock bug + issue: The -disable, -enable, -toggle, -exit, -locknow, -unlocknow, and -restart options depend on access to the X server to do their work. ...
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181 views

ssh and sudo but no $DISPLAY

Usually I do this on ssh for getting a X application using sudo su ssh -X server OKI login xauth list $DISPLAY which returns to me server/unix:10 MIT-MAGIC-COOKIE-1 blablablablabla Then I ...
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Get filename of focused window in xmonad

I want to create a script and bind it to a keyboard shortcut which let's me do the following: If the focused program displays a .pdf file (for example evince or okular): Get the filename, search in ...
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144 views

Convert Xcursor to PNG

Xcursor is a format for the graphics of the cursor in X11 (file reports X11 cursor). xcursorgen allows you to convert PNG files and some metadata to Xcursor files. How do I convert an Xcursor file ...