Questions about X.Org Server (commonly known as Xorg Server, XServer or Xorg), the software that runs the X window system used by most desktop window managers (GNOME, KDE, etc)

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565 views

Xorg Server refusing to start after Ubuntu 15.04 Vivid upgrade

Hellu. Yesterday evening I decided to upgrade my laptop (14.04) to the latest release, aka 15.04. I ran "do-release-upgrade" as root, said yes to everything and went to bed. This did not go as smooth ...
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58 views

Disable the window moving feature in Xorg and use Tiling instead

I've noticed when moving windows Xorg takes up a lot of CPU. But I only have a weak old Celeron Single-core with 2.80GHz. So my question is that how to disable the moving windows feature and use ...
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248 views

How to fix screen resolution after driver upgrade?

For quite some time, I have had Ubuntu 15.04 installed and working well, using the nvidia-349 driver from the xorg-edgers ppa. However, I recently noticed that the nvidia-352 driver was available, so ...
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207 views

Stop or disable keyboard/mouse/input grab from shell

I am trying to debug a full-screen application which uses OIS for input. The program grabs control of mouse and keyboard. When I hit a breakpoint (i'm using gdb), I cannot continue, step, or do ...
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71 views

Ubuntu on laptop: opening a window on an HDMI external monitor via command line

Using Ubuntu 14.10 on a Dell latitude, I'm trying to set up an external display connected through a mini-displayport. Ideally, I would like to be able to open a custom full screen application on the ...
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72 views

clutter - Draw above Gnome Shell Desktop

I am aware of the question Drawing over the desktop and I don't think this question is a duplicate. I need a simple way to draw stuff above my Gnome Shell desktop with some scripting language. The ...
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126 views

Can't start X server on main partition — Mesa/NVidia conflict?

I am unable to start my X server any time I try booting my computer -- which is running Ubuntu 14.04 -- from the default partition (i.e., by choosing the first "Ubuntu" option in the GRUB menu). ...
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735 views

How to setup xorg to use multiseat in Ubuntu 14.04

I trying to setup multiseat on clearly installed ubuntu 14.04.02 with core i3 integrated video and nVidia GT260 video cards. I followed this miltiseat instruction on wiki.ubuntu and manual Multiseat ...
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506 views

Add virtual X11 screen to use via VNC

I'm trying to add a second screen to my ubuntu 14.04 gnome setup, via a VNC client. To be clear: I don't want to connect to a different session, but the same. However, I want to see a different ...
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331 views

Xorg.conf is not changing the Display orientation

I am currently using Ubuntu 15.04 with a GTX 570 on 346.46. I have a 2560x1440 display with a 1080x1920 (portrait) display to the right. I am using i3 as a window manager. The displays seem to be set ...
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17 views

Cannot set up dual monitor on TweinView model

I want to connect an external monitor to my laptop via HDMI, external and built-in monitor are both 1920x1080. However, if I chose to expand screen, the total resolution will be 1920x1080 instead of ...
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132 views

How to get true, correct font rendering on Ubuntu 14.04+

Font rendering has always been a huge problem on Ubuntu. I am hoping someone has a real solution to this problem. I have a laptop with a 17" (382x215 mm) display running at 1920x1080, approximately ...
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122 views

Problems with starting x11vnc on boot

I'm trying to start up x11vnc on boot, without the need to log in, but I ran into quite a few problems and none of the guides helped. First of all, rc.local does not work, as it apparently starts ...
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56 views

What controls the generation of window borders? (MATE)

What I'm looking for is what controls window borders; specifically what actually defines what goes where (as in, the program that says the bottom bar goes at the bottom, not the side or what keeps the ...
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277 views

14.04 - Make synclient changes persistent

No other related thread has a definite answer for this. Some say to create 50-synaptics.conf in /etc/X11/xorg.conf.d/ , while others say to use the one in usr/share/X11. Creating ...
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328 views

freeglut OpenGL GLX extension not supported by display ':0'

I am trying to run an application with OpenGL and the following message apears: freeglut OpenGL GLX extension not supported by display ':0' I already read lots of topics here and in stackexchange ...
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70 views

why is my desktop scaled after starting in latest vivid

I'm running the latest Vivid packages and in the last update I did on Monday my laptop has started to do some strange scaling behavior once the desktop starts. I can see a flash at the lightdm login ...
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373 views

Ubuntu 14.04.2 nVidia 6200 proprietary drivers cause artefacts on unity/GUI

I had recently reformatted and installed Ubuntu 14.04.2 32-Bit desktop and my nVidia graphics card is playing up showing horrible artefacts on Unity. The open source driver that Ubuntu installs by ...
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106 views

Ubuntu 14.10 + AMD 6550m

I got a HP DV6 3240 Notebook with a powerxpress video card, AMD HD 4200m + HD 6550m. It works very well with Ubuntu 14.10 + open source xorg drivers. But unfortunately i need some catalyst functions, ...
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54 views

Screen turns off immediately after X starts

Yesterday I disconnected my HDMI monitor, and connected to another monitor while the system was running. The resolution was now too high for the new monitor (1280x720 monitor was showing the 1920x1080 ...
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404 views

ubuntu 14.10 - lightdm can't start unity. Bad xorg config?

When I try to login with lightdm my monitors go dark and then switch off before taking me back to the lightdm login screen. I get a message telling me: Could not switch to the monitor configuration ...
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156 views

ATI Proprietary Drivers Dual Head Setup Failure

I have an odd problem, which I think I at least have well described. First, I'll describe what I want to do: I want to run two monitors on my desktop PC, I want to drag windows between the monitors, ...
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277 views

X.org is allocating more than 900MB of RAM but xrestop says ~1/40th of that is actually used; how I force it to free the rest without restarting X?

So X.org is allocating an insane amount of RAM: right now 910MB (according to the RES column in htop), second only to Firefox (really Nightly) (at just over 1GB) and trailed by GNOME Shell (at only ...
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78 views

Desktop Environments Incorrect After SLiM Install

I am working on making an automated install based off of Lubuntu using Debian Installer so that the install is as automated as possible (a few inputs at the very beginning). So far I am mostly pleased ...
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71 views

Xinerama: Moving 3D Application Windows causes severe lag and sound distortion

I've been having this issue for quite some time now, but only recently managed to locate the problem itself. What happens is that whenever moving windows that contain 3D graphics, the whole system ...
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182 views

Upgrade Xorg drivers breaks multiple display monitor Nvidia card Quadro610M [Ubuntu14.04]?

I recently upgraded the xserver drivers xserver-xorg-core and xserver-common to their latest versions (1.15.1-0ubuntu2.6). Ever since I am unable to correctly get a dual monitor setup working. Before ...
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21 views

New configuration files for X

Something happened to my Kubuntu 14.10 system that caused it to lock up, and when I rebooted I just got a black screen. I was able to log in on a virtual terminal and also was able to reboot in ...
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94 views

Fullscreen Detection Algorithm for lockscreen/screensaver

I'm working on a cross linux fullscreen detection algorithm, for use in detecting lock screen and screensaver. This is what I have so far: Check if _NET_WM_STATE_FULLSCREEN is supported, if it is ...
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586 views

External Monitor: VGA and HDMI Behaving Differently

I'm trying to set up a second monitor. I want the primary screen to be my laptop's built-in display and I want the secondary screen to be the external monitor. I'm running Ubuntu 14.04 with GNOME ...
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270 views

Cannot Start Ubuntu in Chromebook without Web Browsing First

I just got a Toshiba 13.3-inch Chromebook 2 and have set up Ubuntu Trusty Tahr with Unity through crouton. Whenever I turn the computer back on after having put it to sleep or shut it down, I cannot ...
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142 views

Xorg high cpu usage when wireless connection is active

I use Xubuntu 14.04 LTS 64-bit (3.13.0-43-generic) on a low-end notebook (AMD C-70, 2GB RAM, RTL8188EE) and a router D-Link DSL-2640B. The wireless connection looks fine, but it is impossible to use ...
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130 views

How do I restart my X server?

I turned off my X server with Ctrl+Alt+Backspace. I used SysRq+Alt+B to reboot and now I can't get the X server back on. The motherboard posts and I get the same screen as I had when I used the SysRq ...
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232 views

Setting best display mode as default

I use two resolutions - 1680x1050x60Hz for general usage and 1280x1024x75Hz for CS:GO playing. I have set 1280x1024 in CS:GO settings, but when it launches it sets itself at 60Hz. For this moment I ...
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211 views

Horizontal Screen scrolling + Slow framerate with usb monitor - Ubuntu 14.04

I have been trying to setup my usb monitor as the third monitor on ubuntu 14.04 I installed the latest nvidia driver and followed the instructions on 331.113 readme randr14 Basically where im at is: ...
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50 views

Choosing a single graphics to use?

I am running a computer with an AMD APU with integrated graphics. Recently I bought a new graphics card (Radeon HD 7750). While trying to install this, I could not find a proper driver to use. When ...
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339 views

how to solve auto logout in 14.04 trusty

when i login to my desktop through lightdm or gdm any time i get logout every time also on startup from cli when i startx it just keep flash white and black screen for almost 5 minutes but when i ...
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200 views

UI is not appearing, xserver-xorg-video-intel not installed properlly?

I am new to Ubuntu , yesterday I have install OS , after that I have install some pakages like JAVA, VLC etc . Now I am not getting the UI. but yesterday(after installing OS) I worked with the help of ...
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175 views

How to get two finger tap correctly working on 14.04 with Dell 7537?

I recently installed Ubuntu 14.04 in my Dell Inspiron 7537. The two finger tap in the touchpad that simulates the right click is not very responsive. Sometimes it works at the first time, and ...
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316 views

How to debug why Nvidia-331 is not working?

Since today, my nvidia-331 installation is broken again. The version history available from packages.ubuntu.com claims the driver itself hasn't changed: ...
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44 views

Why are there mystery phantom keystrokes entered in Konversation's input box in GNOME 3.12 after heavy load and how do I fix it w/o restarting IRC?

This is getting ridiculous. In 14.10, with GNOME 3.12 and Konversation 1.5-master #4303, I sometimes wind up in a situation where the system locks up for whatever reason (heavy load from other ...
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2k views

Xubuntu 14.10 upgrade issues with fglrx

I have ATI Mobility Radeon HD 5650: $ sudo lshw -C video *-display UNCLAIMED description: VGA compatible controller product: Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M] ...
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585 views

Dell XPS 13 Sputnik3 (Ubuntu 14.04) cannot find display-port

Here is the story. I've used the mini-display port from my XPS13 for about a year with an ASUS 2560x1440 res external display, via a mini-DP to DP connector. This has worked fine for 1 year. This ...
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667 views

Setup multiseat with X.org and ONE NVidia card with two output ports? (Ubuntu 14.04)

I have been trying to setup my NVidia card to support a multiseat installation for 2 days now and I feel like I am not making any progress. First I tried to follow the Ubuntu instructions found here: ...
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104 views

x11vnc server creates multiple screens

So this picture is showing the problem with scaling turned on. I'm only connecting to 5900 (display 0) and there's just one user. http://imgur.com/8KuHzLa It's super slow so why does it do it and ...
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79 views

$DISPLAY env var gets cleared at random times

Stock Ubuntu 14.04 Trusty. I seem to regularly experience the $DISPLAY environment variable getting cleared for some reason I don't understand. Basically everything will work just fine until it's ...
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265 views

Higher Resolution Xrandr 1400x1050 Legacy GPU

Dear Ubuntu Community, recently I (re)found my 10 year old Sony Vaio laptop, a PCG-GRT916V to be exact. I immediately had the idea to put this old laptop to good use. Over the course of two weeks I ...
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1k views

Nvidia Gtx 755M - Cannot access secondary GPU Permission denied [13]

I installed bumblebee and the Nvidia 331 drivers. I ran glmark2 and expected it to launch but I got this error. How do I run a program on the Gtx 755m graphics card? $optirun -vv glmark2 [ ...
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126 views

Two monitors one 23“ hd and one 28” 4k

I have two monitors connected to my computer, I am using Ubuntu 14.04.1. One screen is set at full hd 1920x 1080 and the other monitor is 28" 4k set to 3840 x 2160. I have nvidia 760 display card. I ...
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128 views

Certain games won't load - Nvidia

Certain games on Steam won't load. I can't figure out why. I upgraded to kernel 3.14.4 from 3.13.39 and this problem won't go away: [ 81.122225] bbswitch: enabling discrete graphics [ 81.593271] ...
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523 views

How to set up a separate X server for the Oculus Rift?

Oculus SDK version 0.4.3+ comes with an experimental Linux support for the Oculus Rift DK2. The documentation mentions two general options to run the Rift: running the Rift in a twinview ...