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• How to disable CDROM & USB for normal users in linux ?

  - by nitins

  As a part of security policy we need to disable CDROM & USB access for normal users. Only root users should have the access. We are mainly using Ubuntu Linux.

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• Can't save screen resolution setting.

  - by Searock

  Hi, My screen resolution in windows and previous version of Ubuntu (9.04) was 1152 x 864. But in Ubuntu 10.04 it gives me an option of 1024 x 786 and 1360 x 786. I have some how managed to add 1152x684 resolution by using xrandr command. searock@searock-desktop:~$ cvt 1152 864 1152x864 59.96 Hz (CVT 1.00M3) hsync: 53.78 kHz; pclk: 81.75 MHz Modeline "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync searock@searock-desktop:~$ xrandr --newmode "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync searock@searock-desktop:~$ xrandr --addmode S-video 1152x864 xrandr: cannot find output "S-video" searock@searock-desktop:~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1360x768 59.8 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 59.9 1152x864_60.00 (0x124) 81.0MHz h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.3KHz v: height 864 start 867 end 871 total 897 clock 59.4Hz searock@searock-desktop:~$ xrandr --addmode VGA1 1152x864_60.00 But the problem is when ever I restart my computer I get this message. Could not apply the stored configuration for the monitors. Could not find a suitable configuration of screens. And then it comes back to 1024 x 786 My graphic card details : Intel(R) 82945G Express Chipset Family. Is there any way I can fix this once for all ? Thanks. Edit 1 : rumtscho has suggested me to modify xorg.conf file. But I am not sure what HorizSync means? is it Horizontal frequency ? My monitor model is Acer v173. Here's my specification. So what should be HorizSync and VertRefresh ? Edit 2 : I have edited my Xorg.conf file as follows : Section "Monitor" Identifier "Configured Monitor" HorizSync 30-80 VertRefresh 55-75 EndSection then I added the resolution and restarted my computer and still I am facing the same problem. Is there something that I am missing? Edit 3 : For now I have edited /etc/gdm/Init/Default(gdm startup scripts) to include following xrandr commands, just below line initctl -q emit login-session-start DISPLAY_MANAGER=gdm xrandr --newmode "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync xrandr --addmode VGA1 1152x864_60.00<br/> xrandr -s 1152x864_60.00 This has solved my problem, but this commands have increased my computer's boot time. I think I will have to edit xorg file properly. Edit 4 : Instead of adding this files to gdm startup scripts I have created a shell script and added it to startup (System - Preference - Startup Applications) #!/bin/bash xrandr --newmode "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync xrandr --addmode VGA1 1152x864_60.00 xrandr -s 1152x864_60.00 And don't forget to add execution rights. (Right Click - Properties - Permission - Allow executing file as program)

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• Controlling music player from web

  - by Malfist

  I have a ubuntu machine that is connected to my house's sound system. Is there a way I can control what it is playing remotely? I have SSH access if necessary. I typically use Rhythmbox to play music.

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• What do I need to enable to run sar -d?

  - by Ryan Olson

  When I run sar -d I receive the error message: Requested activities not available in file /var/log/sysstat/sa24 The file does exist, and I can run sar with other flags, but can't see these particular metrics. Is there something I need to enable in sysstat to collect what I need to see this report? Server is Ubuntu 9.04.

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• soft lockup - CPU#0 stuck for 11s! error with Xen virtual machines

  - by Arun

  Getting a kernel panic with this error on my XEN VPS's. (all on 8.04 LTS) The kernel version on my Dom-0 is 2.6.24-25-xen and the kernel version on the Xen VPS is also 2.6.24-25-xen. I read something about disabling APIC from here http://muffinresearch.co.uk/archives/2008/08/20/ubuntu-bug-soft-lockup-cpu0-stuck-for-11s/ but that doesn't seem to help as well. Anyone experienced this and are there any workarounds? Thanks in advance!

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• open-xen-manger configuration error

  - by user113505

  I have installed open xen manager on ubuntu 10.04 for managing XEN running on other machine,but when i add server and click connect through port 80 its showing < ProtocolError for 192.168.2.13:80/RPC2: 404 Not Found also i am getting following in the web server access log of remote machine 192.168.2.8 - - [05/Jun/2012:21:29:32 +0530] "POST /RPC2 HTTP/1.0" 404 483 "-" "xmlrpclib.py/1.0.1 (by www.pythonware.com)" can anyone help me in this

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• Set default system audio output port (for all accounts)

  - by Ludwik Trammer

  The default output audio port Ubuntu doesn't work on my system. It should be "Analog Mono Output/Amplifier", instead of "Analog Output/Amplifier". I can easily change that in sound preferences, just by choosing the right port in the "Output" tab. The problem is this would only apply to a single account, and I would like to change it system-wide, so it applies to all accounts on the system (I have more than 100 users...). I'm after 2 hours of Googling, so any help would be appreciated.

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• Auto-detected mouse - disable 3rd button enumation

  - by viraptor

  I'd like to disable the 3rd button emulation in ubuntu 9.10. Normally, I'd just change the option in xorg.conf and it would go away - but how do I deal with an autodetected mouse? For example, I've got a mouse I connect to USB and it has the emulation enabled by default. How do I change it in that case?

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• New web page and edited localhost/index.html gives a 404 error

  - by dave

  Hello, I am using Ubuntu and have AMP. I tried to create a new folder under /var/www/html/ it says not found. I edited the http://localhost/index.html and that gives me a 404 error. I guess its something to do with the security. localhost/index.html was OK before the edit Appreciate all assistance. Thanks Dave

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• New web page and edited localhost/index.html gives a 404 error

  - by Jean

  Hello, I am using Ubuntu and have AMP. I tried to create a new folder under /var/www/html/ it says not found. I edited the http://localhost/index.html and that gives me a 404 error. I guess its something to do with the security. localhost/index.html was OK before the edit Appreciate all assistance. Thanks Jean

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• How to install SSL on current site?

  - by vpoola88

  So I've looked at a ton of guides, but non of them seem to get our site to work. This is what I was probably following the closest:https://www.digitalocean.com/community/articles/how-to-create-a-ssl-certificate-on-apache-for-ubuntu-12-04 I also wanted to know why there is a default-ssl in apache2/sites-available ? Is this where I would have to put my configuration? This is my first exposure to SSL and site deployment in general. Thanks guys.

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• webcam problem with skype on linux

  - by Ayoub

  I am runing ubuntu 9.10 and the latest version of skype but I have problem with webcam. When I trie the webcam with cheese it works fine but when I try to use the web on skype , skype crashes. can any body help me

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• Computer name not appearing on network

  - by stib

  I can connect to other computers on my home network (ubuntu + OSX machines) using the IP address, but I can't connect using the netbios name. On the mac the name appears in Finder but if I try to connect (goconnect to server smb://[email protected]) it doesn't work, while smb://[email protected] does. Same with ssh, ping and afp between the macs. This is a intermittent problem. It has worked in the past.

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• How to know the corresponding command line cmd for the UI click?

  - by smwikipedia

  I can click the "movie player" from the GUI of Ubuntu, but how could I know the corresponding command line cmd. I want to run the movie player from commmand line. Many thanks.

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• How can I download a package and all of its dependencies with apt-get

  - by Velislav Marinov

  I'm using Ubuntu 12.04 and I would like to use apt-get to download a package and all of it's depenedcies. Those packages will have to be installed on computers with no internet connection, so in addition to the base package I also need to all of the package's dependcies as well. Is there an easy way to do this (like in muon package manager)? I now that I can use the apt-get download command for this, but I don't want to manually specify each package that muon recommends to install or upgrade.

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• backup linux that installed inside windows.

  - by behrooz

  I have Ubuntu 10.04 inside windows vista. I'm going to install Windows seven but i don't want to loose all the softwares i have downloaded. how can i backup my Linux in an external device(HDD, DVD ...) and take it back to my hard-disk(I want to install it outside the windows if possible) Is there any software doing this for me?

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• Why is Midnight Commander crapped in SSH clients?

  - by Ivan

  Why does MC look like this in SSH clients (I've tried PuTTY and MindTerm) and how to fix it? On the server side is fresh installed 64-bit Ubuntu 10.04 Server. On the client side is XP SP3.

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• Package problems after upgrade

  - by Dan

  I installed a new upgrade on ubuntu which seemed to fail near the end. Now I'm being told that an error has occurred and to please run apt-get to see what's wrong. After some further tries with that I eventually gave up. It seems there's a left over latex package(?) somewhere and I can't seem to get rid of or fix it. Here's an example: blank@ubuntu:~$ sudo apt-get dist-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: tex-common : Breaks: texlive-common (< 2010) but 2009-15 is installed texlive-base : Depends: texlive-binaries (>= 2012.20120516) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-doc-base : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-extra-utils : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed texlive-font-utils : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-generic-recommended : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-latex-base : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-latex-base-doc : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-latex-extra : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-latex-extra-doc : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-latex-recommended : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-latex-recommended-doc : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-luatex : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-pictures : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-pictures-doc : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-pstricks : Depends: texlive-binaries (>= 2012-0) but 2009-11ubuntu2 is installed Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed texlive-pstricks-doc : Depends: texlive-common (>= 2012.20120516) but 2009-15 is installed zlib1g : Breaks: texlive-binaries (< 2009-12) but 2009-11ubuntu2 is installed zlib1g:i386 : Breaks: texlive-binaries (< 2009-12) but 2009-11ubuntu2 is installed E: Unmet dependencies. Try using -f. I've seen similar errors on the site here, but not close enough that i could get it fixed. Any help would be great, Thanks

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• Can I add a file and burn an .iso at once?

  - by Flame

  I just downloaded a Windows 7 iso from MSDNAA at school and they gave me a personal key. I'd like to add a file with my key onto the disc, but it has to remain bootable. Is there a really simple way to do this, or one that doesn't require some shareware? I'm using XP right now, or any solution under ubuntu is fine.

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• My hard drive can only boot once every two times

  - by Eisaj

  Hi all, I just installed a Kingston 64 GB SSD into my laptop, replacing the old 80 GB 5400 RPM one. The drive starts up and works fine every other time. For example, if I'm running normally, and press "Restart", I get: 2100 Initialization error on HDD0. I turn off the computer manually, restart, and...it boots into Ubuntu again. This happens every other time without fail...anyone know what the problem could be?

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• Why does Midnight Commander look crap in SSH clients?

  - by Ivan

  Why does MC look like this in SSH clients (I've tried PuTTY and MindTerm) and how to fix it? On the server side is fresh installed 64-bit Ubuntu 10.04 Server. On the client side is XP SP3.

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• Unable to change keyboard shortcut

  - by balor123

  I'm running Ubuntu 10.10 with KDE. I'm trying to setup my desktops with shortcuts alt+1 for desktop 1 and alt+2 for desktop 2 etc. The problem is that Page Settings refuses to change to the desired shortcut and gives no message as to why. When I press the alt key I see "Alt+" appear in the the box but when I add 1 it reverts back to "Input". Why won't KDE let me change the keyboard shortcut and what can I do to solve the problem?

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• unable to decompress a *.tar.xz file

  - by neubert

  Per http://askubuntu.com/a/107976 I tried tar xf php-5.6.0RC4.tar.xz and tar -xJf php-5.6.0RC4.tar.xz and in both cases I get the following: tar (child): xz: Cannot exec: No such file or directory tar (child): Error is not recoverable: exiting now tar: Child returned status 2 tar: Error is not recoverable: exiting now Here's php-5.6.0RC4.tar.xz: http://downloads.php.net/tyrael/php-5.6.0RC4.tar.xz I'm running Ubuntu 14.04 LTS.

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• Smokeping monitoring IP address and port

  - by bob

  Hi I have successfully install smokeping on my Ubuntu Karmic machine and am monitoring servers. I need to be able to monitor an IP address and a port, can someone tell me how I do that? I looked into Smokeping::probes::TCPPing but I cannot find how to install TCPPing Any help would be much appreciated Thanks

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• How can I remove all the files which has a string in a file

  - by michael

  Hi, I am trying to remove all the files in a directory hierarchy which a certain string inside the file (not the file name, it is the file content). I can list out all the file name which has a string in the file using 'grep -r -l mystringlooking for'. But how can I remove all the files returned by the grep ? I am trying this on ubuntu. Thank you.

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