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• Bursts of white noise sound when playing videos

  - by Dave M G

  I've recently freshly reinstalled Ubuntu, and Mythbuntu, on all my computers. On one of my computers, Mythbuntu 11.10, when I play a video, when it starts, I get a burst of white noise (static) that stays on. If I stop the video and restart it, the noise goes away. Sometimes if I fast forward or manipulate the video, the noise will start. It seems to be initiated, and stopped, by starting or interacting with the video. Any ideas as to why this is happening and how I can get rid of it?

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• /etc/apt/apt.conf gets cleared every time I change proxy settings under settings->network->Network proxy

  - by Muriuki David

  I use a proxy server settings at work but when i get home, my network connection uses no proxy settings. every time i get home and use the proxy settings under settings-networks-Network Proxy to set to "none", the file /etc/apt/apt.conf gets cleared and the following day in the morning i have to edit the file and type in the command again, or at least copy paste from a backup file. How can i avoid this situation, its tiring, how can i make the proxy settings gui write to this file for apt-get and software center to work when i set proxy under network settings?

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• OpenGL and switchable graphic cards

  - by Orcun

  I use a laptop and this laptop has readon AMD Radeon HD 6470M and onboad graphic card. When I run fglrxinfo, I get this error: X Error of failed request: BadRequest (invalid request code or no such operation) Major opcode of failed request: 136 (GLX) Minor opcode of failed request: 19 (X_GLXQueryServerString) Serial number of failed request: 12 Current serial number in output stream: 12 Is it a problem ? Because of I reason I can't use opengl. Because, I can't run any opengl applications.

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• How to setup whole-disk encryption with dual boot on a MacBook Pro (generation 9,2 with 12.04)

  - by blueyed

  I can install Ubuntu 12.04 on the MacBook when using the "noapic" kernel boot option, using the alternate amd64+mac image (from http://cdimage.ubuntu.com/releases/12.04/release/ ). But after installation the screen turn sblack after trying to boot "Windows" (as named in the boot menu that shows up when holding Option/Alt during startup). I want to use whole-disk encryption and given that only one free partition is available, I have setup LVM to do so: - vg0 contains bootlv and cryptlv - in cryptlv I have setup encryption with another LVM volume group (vg1, which holds swaplv, rootlv and homelv) I have not installed Grub during installation (because I was not sure about the partition) and when trying to install it later on /dev/sda4 (which contains the outer LVM) it complained that it could not determine the file system, and --force did not help either. The black screen / behavior looks similar to starting the installer without enabling the noapic option.

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• How to get differents backgrounds for each desktop working properly?

  - by MaikoID

  I've followed all the instructions for getting differents wallpapers for each desktop. I'm using Ubuntu 10.10. I've installed compiz-fusion-plugins-extra to add Wallpaper plugin on my Compiz Settings Manager (ccsm). But unfortunaly I cannot get my wallpapers working properly. I follow these instructions http://ubuntuguide.net/different-wallpapers-on-each-workspace-in-ubuntu and I just get a black background. Everything works fine after I press Win+P (I don't know what is this shortcut, refresh output I guess) or switch between ttf1 and ttf8 (ctrl+alt+f1 and ctrl+alt+f8). I tried reboot but the problem persist. What can I do to resolve this issue ?

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• "apt-get -f install" fails with "/usr/bin/dpkg returned an error code (1)"

  - by parsley72

  I started out trying to install CVS: $ sudo apt-get install cvs Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: libcups2 : Breaks: libcups2:i386 (!= 1.5.3-0ubuntu3) but 1.5.3-0ubuntu4 is to be installed libcups2:i386 : Breaks: libcups2 (!= 1.5.3-0ubuntu4) but 1.5.3-0ubuntu3 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). But when I try this I get: $ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following package was automatically installed and is no longer required: tzdata-java Use 'apt-get autoremove' to remove them. The following extra packages will be installed: libcups2 The following packages will be upgraded: libcups2 1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 14 not fully installed or removed. Need to get 0 B/172 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? y dpkg: error processing libcups2 (--configure): libcups2:amd64 1.5.3-0ubuntu3 cannot be configured because libcups2:i386 is in a different version (1.5.3-0ubuntu4) dpkg: error processing libcups2:i386 (--configure): libcups2:i386 1.5.3-0ubuntu4 cannot be configured because libcups2:amd64 is in a different version (1.5.3-0ubuntu3) dpkg: dependency problems prevent configuration of libcupsmime1: libcupsmime1 depends on libcups2 (>= 1.5~); however: Package libcups2 is not configured yet. dpkg: error processing libcupsmime1 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libcupscgi1: libcupscgi1 depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. dpkg: error processing libcupscgi1 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libcupsppdc1: libcupsppdc1 depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. dpkg: error processing libcupsppdc1 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of cups-client: cups-client depends on libcups2 (>= 1.5.0); however: Package libcups2 is not configured yet. dpkg: error processing cups-client (--configure): dependency problems - leaviNo apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already ng unconfigured dpkg: dependency problems prevent configuration of cups-ppdc: cups-ppdc depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. cups-ppdc depends on libcupsppdc1 (>= 1.4.0); however: Package libcupsppdc1 is not configured yet. dpkg: error processing cups-ppdc (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of cups: cups depends on libcups2 (>= 1.5.0); however: Package libcups2 is not configured yet. cups depends on libcupscgi1 (>= 1.4.2); however: Package libcupscgi1 is not configured yet. cups depends on libcupsmime1 (>= 1.5.0); however: Package libcupsmime1 is not configured yet. cups depends on libcupsppdc1 (>= 1.4.0); however: Package libcupsppdc1 is not configured yet. cups depends on cups-client (>= 1.5.3-0ubuntu4); however: Package cups-client is not configured yet. cups depends on cups-ppdc; however: Package cups-ppdc is not configured yet. dpkg: error processing cups (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libcupsdriver1: libcupsdriver1 depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. dpkg: error processing libcupsdriver1 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of openjdk-7-jre-headless: openjdk-7-jre-headless depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. dpkg: error processing openjdk-7-jre-headless (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of openjdk-7-jre: openjdk-7-jre depends on openjdk-7-jre-headless (= 7u7-2.3.2-1ubuntu0.12.04.1); however: Package openjdk-7-jre-headless is not configured yet. openjdk-7-jre depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. dpkg: error processing openjdk-7-jre (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of cups-bsd: cups-bsd depends on libcups2 (>= 1.4.0); however: Package libcups2 is not configured yet. cups-bsd depends on cups-client (= 1.5.3-0ubuntu4); however: Package cups-client is not configured yet. dpkg: error processing cups-bsd (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of icedtea-7-jre-jamvm: icedtea-7-jre-jamvm depends on openjdk-7-jre-headless (= 7u7-2.3.2-1ubuntu0.12.04.1); however: Package openjdk-7-jre-headless is not configured yet. dpkg: error processing icedtea-7-jre-jamvm (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of openjdk-7-jre-lib: openjdk-7-jre-lib depends on openjdk-7-jre-headless (>= 7~b130~pre0); however: Package openjdk-7-jre-headless is not configured yet. dpkg: error processing openjdk-7-jre-lib (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: libcups2 libcups2:i386 libcupsmime1 libcupscgi1 libcupsppdc1 cups-client cups-ppdc cups libcupsdriver1 openjdk-7-jre-headless openjdk-7-jre cups-bsd icedtea-7-jre-jamvm openjdk-7-jre-lib E: Sub-process /usr/bin/dpkg returned an error code (1) I've done "apt-get update" and "apt-get upgrade" and this hasn't fixed the problem: $ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: libcups2 : Breaks: libcups2:i386 (!= 1.5.3-0ubuntu3) but 1.5.3-0ubuntu4 is installed libcups2:i386 : Breaks: libcups2 (!= 1.5.3-0ubuntu4) but 1.5.3-0ubuntu3 is installed E: Unmet dependencies. Try using -f.

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• aticonfig detects all graphics cards, but amdcccle shows the cards as disabled

  - by DevZer0

  I been having the strangest problem since few days ago. I have 3 ATI graphics cards and the aticonfig --list-adapter shows the following output * 0. 01:00.0 AMD Radeon HD 7900 Series 1. 02:00.0 AMD Radeon HD 7900 Series 2. 05:00.0 AMD Radeon HD 7900 Series when i do aticonfig --adapter=all --initial -f it generates the correct X config also. but after rebooting the output only show on primary monitor and when i look in amdcccle it shows the other 2 adapters as disabled. I tried with monitors attached and dummy plugs both but the situation doesn't change. Any idea whats causing this? also right clicking and making the adapter enabled in amdcccle and saving changes causes the X config to only have the adapter section and no screen section. after reboot the situation stays the same.

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• Ubuntu doesn't "see" external USB Hard Disk

  - by Mina Michael

  It's NTFS. It's USB2. I'm using Ubuntu 13.04. It works perfectly fine on Windows (which excludes cable and hardware problems). I have two Ubuntu computers and it's not detected on either. It's about 500 GB. Edits: Following the first link, I input sudo lsusb in a terminal; before and after connecting the HDD. The difference was Bus 001 Device 012: ID 14cd:6116 Super Top M6116 SATA Bridge. There it is! ("sata bridge" used to appear in a windows notification when I plugged in the HDD in!). ...This means that Ubuntu detects it but is it not mounting it? I tried this: sudo mount /dev/sdb1 /mnt But gives this: mount: special device /dev/sdb1 does not exist I also tried: sudo mount /dev/sdc1 /mnt but it stays with no output forever. I left it in background for about 30 min.s. sudo fdisk -l gives out this: Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xa42d04a3 Device Boot Start End Blocks Id System /dev/sda1 63 80324 40131 de Dell Utility /dev/sda2 * 80325 102481919 51200797+ 7 HPFS/NTFS/exFAT /dev/sda3 263874558 312580095 24352769 5 Extended /dev/sda4 102481920 263872511 80695296 7 HPFS/NTFS/exFAT /dev/sda5 263874560 310505471 23315456 83 Linux /dev/sda6 310507520 312580095 1036288 82 Linux swap / Solaris Partition table entries are not in disk order Disk /dev/sdc: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x5822aaea Device Boot Start End Blocks Id System /dev/sdc1 2048 976769023 488383488 7 HPFS/NTFS/exFAT The part below "Partition table entries are not in disk order" takes about 5 minutes to appear. The outputs of ls /dev/ | grep sd before and after connecting the HDD: before: sda sda1 sda2 sda3 sda4 sda5 sda6 ,after: sda sda1 sda2 sda3 sda4 sda5 sda6 sdd sdd1 The second output has the lines sdd and sdd1 different from the first one. IT SHOWED THE FILES!! The command sudo mount /dev/sdd1 /mnt worked after I typed in sudo fdisk -l!!! Thanks a million!! :) :)

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• Can someone help me remove/fix ubuntu?

  - by user286152

  I'm very new to ubuntu for starters. Whenever I turn my computer on, it opens to the GNU Grub terminal. It says it supports minimal Bash-Like line editing (I have no idea what this means). To work-around this, I used "exit -ubuntu", this then takes me to a separate page which I selected the Windows Boot Manager and click on the Windows 8.1 icon which makes my Windows 8 load normally. If I click on the other icon, being the ubuntu one, I get put back at the GNU Grub terminal and thats it. If someone could help me either remove ubuntu or repair it so that I can load it again, I would appreciate it. I had installed the most recent ubuntu version. Any other required information to assist I can provide. Thank you.

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• opengl libraries for ubuntu running on Virtual Box

  - by vboxuser

  I am having Ubuntu 10.04 running on VirtualBox. Guest additions are installed successfully. But Guest additions do not provide the OpenGL library. To run open GL demo what needs to be installed. Some google links suggest Mesa utils. By my understanding is Mesa utils do not use vbox drivers to achieve hardware acceleration. Ubuntu 10.04 is running on VirtualBox and not on bare metal. The host comprise of Zx400 CPU with nvidia graphics driver. But this is not relevant since I would be using the vbox drivers provided by guest additions on VirtualBox. In this scenario how do I get OpenGL libraries on Ubuntu?. (Specially I am looking for solution other than Mesa, since mesa has support only for VMware and not for VirtualBox) How to get Opengl libraries which use vbox drivers for 3D hardware accleration?? As i already mentioned, ubuntu 10.04 is running on VirtualBox and not on bare metal. the host comprise of Zx400 CPU with nvidia graphics driver. but this is not relevant since i would be using the vbox drivers provided by guest additions on VirtualBox. In this scenario how to i get OpenGL libraries on Ubuntu. (Especially i am looking for solution other than Mesa, since mesa has support only for VMware and not for VirtualBox Thank you

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• Dedicated GRUB2 Partition and Windows 8

  - by captain

  Ok so as many of you may know the Windows 8 developer preview was released today and as such I'm very eager to use it but I have both Ubuntu and Windows 7 installed on my machine. I don't want to disturb these drives and have recently set up a dedicated grub partition on /media/sdb8 My question is if I install windows 8 will it overwrite the grub partition and if so what are the steps I should take to recover it.

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• Special keyboard keys?

  - by Hailwood

  I have a new laptop, It has the icon for toggling the touchpad on fn+f1 so I would like to assign this shortcut, I have a working script, and I can assign the script to any other combination, but it appears that ubuntu does not pick up the fn+f1 combination? how can I correct this? The other one is, My laptop has three extra buttons, Assist, Web, and Vaio. These map to Help, Homepage, and nothing respectively. the Web button is working perfectly. The assist button if I am setting up a keyboard shortcut for something it binds fine, but then pressing it does nothing? The Vaio button seems to not be listened to much like the combination I posted above. How can i correct the assist and Vaio buttons?

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• How to Start thunderbird on startup on ubuntu 12.04

  - by Levan

  So i want to start minimized thunderbird on ubuntu startup I used this, but this was not helpful after following it , i could not even start thunderbird, to fix this i had to start it in safe mode and delete the ,,FireTray Plugin" after that it started to work but it deleted all my email accounts and had to do that chore all over again so is there a way to start thunderbird minimized on startuo ?? thank you in advanced

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• How can I get the best performance for playing games?

  - by Oli

  I've been playing a couple of Wine-games today and decided to switch to metacity to see what the performance difference was like. If you've never done it before, you just run metacity --replace but don't do that if you use Unity! Anyway, surprise surprise it was like playing on a dedicated Windows gaming machine. Playing under metacity today was bliss. Much higher framerates and just a fluidity that you'd expect from a native game. I'm not sure I can go back. Switching to metacity is no hardship but I wonder if there's anything else in the WM landscape that I should try out. I'm essentially looking for suggestions for the best way to play games. Mix up WMs, dedicated X sessions, whatever... As long as it makes Wine games run faster. Small print One process per answer (eg: New X session + OpenBox) We should probably land on a benchmark so we can show percentage improvement over a stock Compiz desktop. I'm open to suggestions in the comments. If people could test it and submit their how much it improves things for them in the comments, that would give others a good idea of if it's worth the pain.

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• How to install a Logitech webcam?

  - by Agnese

  I'm having problems with installing a webcam: Archive: /media/LWS_2_0/Setup.exe [/media/LWS_2_0/Setup.exe] End-of-central-directory signature not found. Either this file is not the last disk(s) of this archive. zipinfo: cannot find zipfile directory in one of /media/LWS_2_0/Setup.exe or /media/LWS_2_0/Setup.exe.zip, and cannot find /media/LWS_2_0/Setup.exe.ZIP, period. How do I solve this?

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• dpkg returns error 10 when processing package php5-common

  - by Jesse

  I'm having trouble installing php in 13.04. Seems like the package manager can't (re)configure the php package. I already tried purging every php* package, removing the cache files in /var/cache/aptbut and other solutions I've found but nothing seems to work. Here's the error output: $ sudo dpkg --configure -a Setting up php5-common (5.4.9-4ubuntu2.3) ... dpkg: error processing php5-common (--configure): subprocess installed post-installation script returned error exit status 10 Errors were encountered while processing: php5-common sudo apt-get install -f sudo apt-get install php5-common php5 they all return the same error. How can I fix this?

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• How to make LBP-1120 Canon printer work?

  - by cipricus

  Initially this question was limited to 11.10. Now I am in (Lubuntu) 12.10. (On the changes in the question see this meta question). Considering 11.10 I have tried different (or not so different) approaches - that also other users commented here. My main references were: the ubuntu official documentation website on the LBP Canon driver package, this Unixmen solution which partly refers to Radu Cotescu script that aims at providing a near-automated install, and an updated by Unixmen version of that very script (download here). None worked for me.

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• How to clear unshown OSD notifications

  - by Avatar Parto

  I am a webmaster of 2 active websites. Every time I start Thunderbird, it downloads all the new messages from the admin mail addresses of these sites - [email protected], [email protected], [email protected], etc. There are about 20 of them - this includes my personal email accounts. Now, am not always connected to the internet and there arises cases where I need to access already downloaded mails. Thunderbird then tries to connect to the internet, which it can't coz am offline, and then displays about twenty OSD notifications, one after the other, telling me that connection for each email address has failed. That's frustrating and it really eating me up. Am looking for a way, either: 1. To tell Thunderbird NOT to connect to the internet when am offline, or 2. To clear all these notifications after like the first one shows. And if it will help, am using ubuntu 13.04 and Thunderbird 24.0 and I always keep my computer fully updated. Any help is welcome. Thanxs.

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• Some applications (Anki, Okular, Calibre) start very slowly

  - by k1U

  When I start one of the applications mentioned in the title from the terminal, I get this: Registered DEC: true Error in contacting registry "org.freedesktop.DBus.Error.NoReply" "Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken." Could not query active accessibility event listeners. Registered event listener change listener: true Currently I am running 12.04 This problem started a couple of days ago, shortly after I've installed okular from within the software center. by "slow" I mean it takes about 30 seconds. Other applications like chromium start instantly.

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• grub installation in fatal error in jbod disk setting

  - by Vincent

  so i have this jbod drive, with two different partition partition A is for windows while B i would like to have ubuntu 12.04 in it however at the end of ubuntu installation, there is an error stating grub failed to install and a fatal error. i was given option as to where to install the grub, and i tried them all and all giving me the same fatal error here is one example of options given /dev/mapper/nvidia_eeffaace1 to my knowledge grub is supposed to be installed in /dev/sda but in jbod configuration, both sda and sdb isnt available please help me and thank you

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• Installing Ubuntu 64bit on Acer netbook causes black screen.

  - by big-marc

  Trying to install Ubuntu on an external usb 3 500 Gb hard-drive. I am using an Acer netbook. the specs are: amd c-60 1ghz with 4 Gb ram. I have a 64 bits windows 7 no2 installed. I downloaded the ubuntu-12.04.1-alternate-amd64 ISO and used the universal usb installer to install the Ubuntu When I reboot on the external hard drive, I have the language selection, then the menu...I choose to install...and I get a black flickering screen. and nothing more. Any suggestion?

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• Google Chrome side by side stable beta unstable. How to approach?

  - by sobi3ch

  I have the stable version of Google Chrome on my box. And each time I'm trying to install beta or/and unstable versions then I run into the same problem: The following packages will be REMOVED google-chrome-stable The following NEW packages will be installed google-chrome-beta 0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded. Need to get 34.5 MB of archives. After this operation, 3,109 kB of additional disk space will be used. Do you want to continue [Y/n]? I need to remove the first version before installing another. How can I install stable and beta (and maybe unstable as well) next to each other?

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• krunner unreadable black text on black background. File a bug? Where?

  - by user52784

  I'm running Kubuntu 12.04 beta2 (up to date). Already tried to create a user from the scratch but the problem can still be replicated. I'll make it simple: with any of the available themes (air, air 4 netbooks, oxygen) whenever I disable desktop effects, KRunner instantly becomes black (with black fonts) rendering itself useless because of its unreadable text. Here is a screenshot I took: http://i42.tinypic.com/348sz7n.jpg The weird thing is that with effects enabled KRunner is "light gray" and perfectly functional. What can I do? Should I file a bug? If yes: where? On the KDE bug tracker or the Kubuntu one? Thanks in advance!

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• Is it save to configure "Shutdown" on "When laptop lid is closed" ?

  - by Takkat

  To setup a laptop owned by a complete PC novice any settings that may become hard to tackle remotely need to be avoided. The laptop will be administrated via SSH. One thing in my list are problems arising from improper wake-ups from suspend or hibernate as they may also affect network accessibility. This is why I thought setting up power management to "shutdown" on closing the laptop lid could be a good idea. However I am not sure if this is a safe way to do. What problems in addition to software not closing properly (and thus not saving their data) could I be faced if I proceeded as planned?

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• Compizconfig Grid doesn't work under Ubuntu as virtual machine

  - by SoftTimur

  I have installed Ubuntu as virtual machine within Mac. I have installed VM tools. The approach in this link of Compizconfig Grid, which worked in my previous laptop where Ubuntu was not a virtual machine, does not work anymore. I set some shortcut, but no action is launched... Does anyone know why? The major functionality I need from Grid is tiling windows to left/right side of the screen... Does anyone know any alternative?

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