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• Display turns off when watching videos (then video starts to lag), how to fix it?

  - by Bad Learner

  Okay, here's the thing - - On my Ubuntu 11.10 64-bit installation, I have the display set to turn off automatically after 3 minutes of inactivity. There are two problems now: the display turns off even when I am watching videos. But I don't want to keep fiddling my mouse or keyboard when I am watching a movie. Okay, like I said above, the display turns off, then I move the mouse a bit each time, and the display turns back on. But now, the video doesn't play properly, it lags. A lot actually. Are these issues common? Can these be fixed?

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• Alt + Tab window switcher preview stoped working

  - by umpirsky

  It just stopped working. After I boot Ubuntu it does not work. When I run unity --replace it works again, but after restart problem occurs again. And that happens on every reboot. I have some startup apps, but I don't think that can be the problem. Any idea? UPDATE: Looks like I had some problems with firefox causing Alt+Tab to stop working. After reinstalling firefox and computer restart it works.

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• Mount of File System Failed. -- After upgrading from 9.04 to 9.10

  - by javanoob

  After upgrading from Ubuntu 9.04 to 9.10 i am getting this message on boot up: Mount of File System Failed. A maintenance shell will now be started. CONTROL-D will terminate this shell and retry. myusername@root:~$ After searching in google,i found out that i have to run the command fsck on the OS partition from ubuntu Live CD.. Here are my questions: 1) I dont know in which partition my ubuntu OS is installed..(Those are not user-friendly drive names to remember right :)) -- Is there any command to know in which partition my ubuntu os is installed? 2) Can i do this from Ubuntu 10.04 live CD? Thanks in Advance

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• Ubuntu Freezes w/ Proxy

  - by jrc03c

  Ubuntu 11.04 freezes completely after a little while when using a proxy. It's fine when it's got a direct Internet connection, but it completely grinds to a halt after about 10 or 15 minutes of traffic through a proxy. Any ideas? UPDATE: Here's some more information. I have a second-generation MacBook, which has both OSX 10.6.8 (Snow Leopard) and Ubuntu 11.04 (Natty Narwhal) installed on it. When running through a proxy, Snow Leopard works fine, but Ubuntu freezes frequently. Any suggestions at all? Or, rather, what other kinds of information do you need?

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• Java still dont recognize horizontal scroll (right click) 14.04

  - by user289280

  I am totally trackpoint fan, I use it all the time and have disablet my touchpad. Due to my study I work a lot with MATLAB, but MATLAB uses Java, and horizontal scroll does not be recognized by java as I already reat in many other threats(well it recognizes as right click :S ). There seems to be no solution for that and disable horizontal scroll in matlab is no solution for me at all. Does anybody know about a fix for that or somehow to enable horizontal scroll java. This really drives me crazy. HELP! I have Ubuntu 14.04 with java version: java version "1.7.0_55" OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1ubuntu1) OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode) Thank you in advance!

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• How do I enable or disable the global application menu?

  - by Michael Ekstrand

  I'm fairly excited for Unity, as it looks like a promising new direction for Ubuntu. However, I do have a concern - will it be possible to use Unity without the global menu? I have my window manager set to focus-follows-mouse/sloppy focus, and find the productivity gains to be immense. Sloppy focus is incompatible, however, with global menus, as it is possible for the focus to change while you move from window to menu. Will Unity support an option to use window menus while still using Unity?

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• Programmatically Getting Name of Front-most (currently running) application in Unity

  - by NHDaly

  I am trying to write a script that executes differently depending on the currently active program, and I am wondering if there is any way to find this programatically. For example, I come from the Mac world, and in Apple's Applescript you can do the following: set appPath to the path to the frontmost application set appName to the name of file appPath and that will give you the name of the currently running application. Is there anything similar that I can do in ubuntu-land? Thanks!

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• How can I install an old version of libc on 12.04 and is it safe to do so?

  - by mathematician1975

  I am building an application on 12.04 and I need to run it on an embedded device. The device has libc-2.8.90.so on it and my dev machine has libc-2.15.so on it. I would like to install libc-2.8.90 onto my dev machine and attempt to link it to my application. I have searched at the Ubuntu software centre for libc-2.8.90 but I cannot find anything resembling it. Is there a way to install this on my machine from command line?? Also will my system be safe having 2 installed versions of libc at the same time? Can it lead to any instability?

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• How to get mixer applet for "Built-in Audio Analog Stereo"

  - by gerrit

  In pavucontrol, I can choose between RV620 HDMI Audio [Radeon HD 3400 Series] and Built-in Audio. When the former is enabled, videos on (among others) Youtube play way too fast, but this answer solved my problem (though I don't know why). However, when I use Built-in Audio instead of RV620 HDMI Audio [Radeon HD 3400 Series], the mixer in my applet appears to be disabled; the icon is replaced by a blank and changing the volume has no effect, as the applet apparently only relays to RV620 HDMI Audio [Radeon HD 3400 Series]. How do I get an applet to control the volume for Built-in Audio instead?

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• How do I change my 1080p external monitor from portrait to landscape on an Eee PC 1000H?

  - by Acky

  Hi I have an EeePC 1000H netbook with a Samsung T22A350 1080p 22" external monitor. I've just installed Ubuntu 12.04 and I mainly use the external display but when I select 1080 from the dropdown list, my only options are for a rotated portrait. My neck's non too supple, so tilting my head for extended periods is not really viable. :-) Any ideas on making ubuntu display 1080 normal landscape? It must be possible as using a gparted boot cd does it perfectly. Any help greatly appreciated. Cheers!

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• How to host an AP or a hotspot?

  - by user1048138

  I'm running Ubuntu 12.04 as a virtual machine on my Mac. Since I am unable to get the virtual machine to have full access to my WiFi card, I bought another USB WiFi card to use. This is my WiFi card. If you are unfamiliar with Virtual machine, as far as I know, since the Ubuntu has its own card now, it shouldn't matter. I have followed these guides with no luck: https://help.ubuntu.com/community/WifiDocs/WirelessAccessPoint http://www.danbishop.org/2011/12/11/using-hostapd-to-add-wireless-access-point-capabilities-to-an-ubuntu-server/ The problem is that the WiFi connection appears on all of the machines that I have in my house: 2 iPhones, Dell machine running Ubuntu and two Macbooks. However the connection times out on all of these machines. Questions: Could this be a driver issue if that same WiFi card can connect to other WiFi points and use its internet Could this be DHCP related? I would think not. It should at least get a 169.X.X.X address? No? Any solutions for me?

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• User Switching in XFCE 12.04 with LightDM and dumping unneeccesary Gnome libs

  - by user111120

  I'm an elder non-techie Mac-to-Linux convert trying to play the linux tech game by ear, so please be gentle! :) I am running XFCE Ubuntu 12.04 totally on a 8-gig flash drive and it's fantastic. I am starting to run into potential space issues (down to 1.0 gig free from 1.9 gigs since being installed last summer), most likely because of growing Thunderbird mail files, and this prompted my question. I just installed lightDM on my system because I want the ability to switch users in XFCE if I follow instructions on another blog. They advised using LightDM instead of GDM because LightDM doesn't download Gnome libraries. That's great since I need the space, but my question is how can I tell whether I don't already have Gnome libraries installed from other updates and such? And can I minimize having any Gnome libraries? The method for me to switch users entails creating a "fast-user-switch" file in /usr/local/bin; is there any easier way? One last thing so I din't have topen another needless thread; while experimenting I somehow lost the share folder in one of my accounts. Is there any way to get a share folder back? Thanks for any tips! Jim in NYC

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• In virtualbox, I can't access the dvd drive to install a guest host

  - by user211062

  I have installed a fresh copy of Ubuntu Server 12.04 and VirtualBox 4.3. I have set up a VM called "MediaServer" and tried to start it. I then get the following error: Cannot open host device '/dev/sr0' for readonly access. Check the permissions of that device ('/bin/ls -l /dev/sr0'): Most probably you need to be member of the device group. Make sure that you logout/login after changing the group settings of the current user (VERR_ACCESS_DENIED) I have looked all over the Internet and have been unable to find a solution. Using Webmin, I tried changing the group settings so that my user name was in the "vboxusers" group, but that did not work either. I tried various other changes in group settings and none of them worked. Also, I tried rebooting the server after the changes and that didn't work either. I have been following a guide on how to set up an Ubuntu server from the website "linuxhomeserverguide.com" and when it came to the section where you could finally set up your first virtual machine, I am stumped. I would really appreciate it if someone could help me. Thanks in advance.

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• If I enable/disable my wireless device, my computer will panic

  - by Yinyanghu

  Now, I use Debian 6.0.6 instead of Fedora 16/17. But I still sustain the problem of my wireless problem. If I enable/disable my laptop wireless device or my usb wifi adaptor, my laptop will panic. It seems like all the processes stop at that time and I have to restart my laptop directly. P.S. I think I installed the drivers correctly and the linux kernel may have some bugs. For example, when I unplug my usb wifi adaptor or I use this command, ifdown wlan0 I encounter this problem. Wireless Device: PCI: 03:00.0 Network controller: Broadcom Corporation BCM43225 802.11b/g/n (rev 01) USB: Bus 002 Device 005: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN

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• Restrict access to apache2 web root but allow it to subfolders

  - by razor7

  I need to restrict access by password to my web root apache test server (ie http://localhost) but allow access to subfolders (ie: http://localhost/testsite) I did create the .htpasswd and .htaccess, and put the .htaccess to web root (http://localhost) so when trying to access web root, it asks for user and pass, but so does in subfolders (ie: trying to access http://localhost/testite) I want to be asked for password on web root, but not on subfolders. Is that possible?

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• How do I add more than one command to /etc/rc.local?

  - by Andreas

  I want to add two power saving commands to /etc/rc.local file. This to dissable bluetooth: rfkill block bluetooth And this to reduce screen brightness: echo 3024 > /sys/class/backlight/intel_backlight/brightness Separately added to /etc/rc.local they work but not both of them together like this: #/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. echo 3024 > /sys/class/backlight/intel_backlight/brightness rfkill block bluetooth exit 0 How do I add the two commands to get them properly executed at start-up? Update It turned out to be a timing issue. I fixed it by delaying the execution of the first command thus: (sleep 5; echo 3021 > /sys/class/backlight/intel_backlight/brightness)&

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• Ubuntu 12.04 Syntek in-built webcam not detected

  - by Farotz

  I have installed Ubuntu 12.04 and my inbuilt camera is not detected. I have tried with Cheese and GUVCView, but neither detects the webcam. I have also tried the solution proposed above using the Terminal, with no results. This is my lsusb output: farotz@farotz-EasyNote-BU45:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 003: ID 174f:a821 Syntek Web Cam - Packard Bell BU45, PB Easynote MX66-208W Bus 002 Device 002: ID 1d57:0008 Bus 003 Device 002: ID 08ff:1600 AuthenTec, Inc. AES1600 Bus 001 Device 007: ID 12d1:142d Huawei Technologies Co., Ltd. farotz@farotz-EasyNote-BU45:~$ Any suggestions? Thank you.

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• Why does ubuntu 11.10 freeze when playing video?

  - by psylockeer

  I run ubuntu 11.10 on i5 CPU with 4GB RAM nvdia geforce GTS 250 connected to widescreen tv (HDMI) When using vlc, xbmc or boxee to play movies the system randomly freeze, the audio is looping the last words of the video file and nothing is responding. So I have to manually reset the system. Can anybody help? P.S. I forgot to mention the the log file was full of line regarding xbox 360 wireless receiver (I dual boot with windwos 7) so I unplugged it to see if that counts

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• Issues with nVidia GeForce 210 while watching movies

  - by David ???

  Ever since 10.04 I have been trying to resolve an issue with my graphics card - nVidia GeForce 210. I'm having issues when I watch movies on 10.10 - they are jumping all the time, even with Compiz disabled and when that is the only thing I am doing. I have tried the solution to How to get NVidia GeForce GT 210 drivers working on Lucid Lynx? but it didn't work. How can I fix this? Here are the steps I took: apt-get --purge remove xserver-xorg-video-nouveau edit /etc/default/grub to add the line GRUB_CMDLINE_LINUX="nouveau.modeset=0" sudo update-grub Reboot Download official Linux drivers from nVidia site. sh filename-of-downloaded-driver-package

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• How do I change my PYTHONPATH to make 3,2 my default Python instead of 2.7.2?

  - by max

  I have python3.2 located in /usr/lib/python3.2. I am not sure if that means it's installed but I assume it is for now. Some facts about my system: $ which python /usr/local/bin/python When I type python in terminal I get the following $ python Python 2.7.2 (default, Dec 19 2011, 11:12:13) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. Then to find the path I do >>> sys.info >>> sys.path ['', '/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg', '/usr/local/lib/python2.7/site-packages/pip-1.0.2-py2.7.egg', '/usr/local/lib/python2.7/site-packages/PIL-1.1.7-py2.7-linux-x86_64.egg', '/usr/local/lib/python27.zip', '/usr/local/lib/python2.7', '/usr/local/lib/python2.7/plat-linux2', '/usr/local/lib/python2.7/lib-tk', '/usr/local/lib/python2.7/lib-old', '/usr/local/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/site-packages'] So knowing all of this, how do I change my default system python from 2.7.2 to 3.2?

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• Ubuntu 10.10 crashing on initialization, how to solve?

  - by Tom Brito

  Yesterday I installed Ubuntu 10.10, and on the first login it got frozen, so I powered off and on the computer, and it started well. Now, during the updates it got frozen again, and after every login again. I can't even change to the command line with ctrl+f1 or f2. Is there a way to get some log information on the initialization? I have no idea what can be causing this. Previously I was using Ubuntu 9.04, which is now not receiving new updates. Versions 10.04 and 9.10 behavior the same as 10.10, and version 11.04 crashes much on many situations. So, is there a way to get some log information on the initialization to help find what's wrong?

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• recent unreliable wireless connection

  - by gabkdlly

  Recently, my internet connection over wireless ( via a Netgear KWGR614 router ) has become unreliable, on both a Dell laptop running Ubuntu 10.04 as well as my Desktop running Ubuntu 10.10 . The problem does not seem to occur on a laptop running Windows Vista, nor on a Desktop running Windows 7 ( this machine is connected with an ethernet cable ). The problem does not seem to occur on my Openmoko Freerunner ( running Android 1.5 ), though I hardly ever use this device to connect over WLAN, so the problem may have just slipped by. On my main Ubuntu Desktop, I have tried the following wireless devices: a Longshine PCI card ( an old device with an RTL8180L chip ) a D-Link DWL-510 PCI card ( this device threw warnings in dmesg ) a USB device from MSI ( US54EX ). Usually my wireless network shows up in the network manager with a normal signal strength, even when the connection speed is slow or the connection gets reset ( asking me to click connect to re-authenticate my wireless connection ). I have observed this problem with a Netgear KWGR614 Router ( with the manufacturers firmware ), as well as with a TP-LINK TL-WR741ND router running OpenWrt. Taking a look at my routers logs, I find many instances of the following line: Tuesday,04 Jan 2011 03:53:01 [TCP SYN Flood][Deny access policy matched, dropping packet] I know that the Netgear router is susceptible to denial of service attacks, as I have previously been able to disrupt its operation by putting an nmap scan into a while loop. I use WEP or WPA to encrypt the wireless network. Is it possible that someone is jamming my signal ?

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• How can I backup files on /etc using Deja Dup? [closed]

  - by Chris Good

  Possible Duplicate: How do I open Deja Dup as root? I am using Ubuntu 12.04 LTS. I'm trying to setup Deja Dup to backup the files for several users (/home) and /etc but as it runs as myself, there are many files it cannot read and therefore cannot backup. I want to try running Deja Dup as root as then it should be able to read and backup all files. I've seen some other info about how to set up a particular App to run as root, so I guess I should try that.

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• Dropbox install stuck at 99%, how do I fix it? (and any dpkg errors)

  - by John

  I tried to install Dropbox using How to install Dropbox?, or with apt-get install nautilus-dropbox. Dropbox loads until 99% and then hangs, causing the system to go to 100% cpu usage. If I reboot or close the terminal, I sometimes get dpkg errors which prevent me from using apt-get or Software Center to perform any package management functions. I would like to resolve all these and just get Dropbox working. How do I do that? Note: This question is possibly answered in two parts: The accepted answer tells you how to install Dropbox. But if you have dpkg errors, see this answer before you use answer 1 to install Dropbox.

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• How to change the binding of Windows key which runs Unity's Dash?

  - by LFC_fan

  Currently, I am using the Unity Qt panel in my Gnome desktop, and when I press the Windows key, the Unity's dash launches, and I can't use any compiz based shortcuts. Same behaviour is exhibited when I log in to Unity 2D as well, as the Windows key launches the dash. I have no desire to change my Compiz shortcuts, so is there any way to change the keyboard mapping of Unity 2D's dash to something other or disable this shortcut completely?

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