Ubuntu is a Linux distribution with an emphasis on ease of use and installation. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

learn more… | top users | synonyms (1)

2
votes
0answers
37 views

Why VMware DHCP persists getting offline?

I am trying to set up a SSH server in my remote machine which is running Windows 7 on it currently. So first I set up a Oracle VirtualBox but it did not work for me properly. Then I decided to go with ...
2
votes
0answers
959 views

Is there a solution for when a system hangs on “switching to clocksource tsc” anyway?

Ok so this is exactly what I did yesterday, and what I have tried to solve the problem so far. The distribution is Ubuntu Server 12.04. What I have done just before the error appeared I added a new ...
2
votes
1answer
122 views

Why does fstrim trim all of the free space on my mdraid mirror after a reboot? [duplicate]

I have a server with 2 SSDs: Model Family: Intel 520 Series SSDs Device Model: INTEL SSDSC2BW240A3F Firmware Version: 400i User Capacity: 240,057,409,536 bytes [240 GB] Sector Size: ...
2
votes
1answer
95 views

Fresh install Windows 7 from USB on machine with Ubuntu and Windows 7

I have a Toshiba laptop l755 S5282 with Windows 7 and Ubuntu 12.04 on it. About a year ago, I pulled an iso file off of DigitalRivers for Windows 7. I did a fresh install of Windows 7 from USB, then ...
2
votes
1answer
176 views

xorg.conf XkbOption ignored for terminate:ctrl_alt_bksp to restart X

I want Ctrl+Alt+Bksp to restart X, so I created an xorg.conf rule: /usr/share/X11/xorg.conf.d/53-zap.conf: Section "ServerFlags" Option "DontZap" "false" EndSection Section "InputClass" ...
2
votes
1answer
215 views

Bad built-in chain name with iptables-restore

I saved my iptable settings on a Ubuntu 11.4 system using iptables-save >filename I then replaced the Ubuntu system with CentOS 6.5 and tried to restore iptables using iptables-restore ...
2
votes
1answer
81 views

How to make HA Heartbeat failover when either of two NICs connection is lost?

I was successful in configuring a simple Heartbeat setup on Ubuntu 12.04, which will fail-over two VIPs to a second server when BOTH Ethernet links fail. What I can't figure out is how to fail-over ...
2
votes
2answers
1k views

“sudo service vsftpd” returns “Unknown job: vsftpd”

I installed vsftpd on ubuntu 14.04 and when I want to stop or restart vsftpd service this message showed and nothing happened in service status! root@ali-lap:/home/ali# service vsftpd restart stop: ...
2
votes
0answers
122 views

What is the xcalib -screen number for the VGA monitor when the other monitor is HDMI

I must use a VGA-to-DVI cable and a HDMI cable to run two monitors. I'm trying to invert the colors on both monitors but I can only invert one of them: $ xcalib -invert -alter -s 0 #works $ xcalib ...
2
votes
0answers
1k views

Touchpad not recognized on linux (ASUS R751LB)

I have just bought a brand new laptop. Unfortunately, touchpad doesn't work on any linux distribution (tried mint Ubuntu 12.04, Ubuntu 14.04, Mint 14, Mint 16, also Mint 16 with recent 3.13.5 kernel). ...
2
votes
0answers
138 views

Vagrant-lxc container not starting

Firstly I'd like to say that I'm new to LXC and I may have some problems getting the right idea of how the things should work. The thing is I'm trying to start a previously download vagrant-lxc box ...
2
votes
1answer
158 views

Configure guessnet to switch automatically between LAN and WLAN

I want to configure guessnet and wpa_supplicant such that if I plug in my LAN cable, it connect to the network via the cable and if I unplug it, it automatically switches to WLAN and vice versa. I ...
2
votes
0answers
95 views

How can I crop a 1920x1200 monitor to 1920x1080?

I have just purchased a 1920x1200 monitor, and have some situations where I want to force the output to the more common 1920x1080. However, I don't want to distort the output, and would prefer a ...
2
votes
2answers
826 views

Configure multiple interfaces with different hostnames using DHCP and DNS

I have a machine running Ubuntu 12.04 Server with two interfaces connected (eth0, eth1) to the network. Our network is set up so that a FreeBSD based DHCP server hands out leases and registers the ...
2
votes
0answers
927 views

Running F.lux (Flux) or Redshift with Multiple Monitors with Nvidia Optimus

I have tried installing F.lux and then Redshift, and configured them to run on multiple monitors with no success. I wonder if my setup, which includes Nvidia Optimus setup using Bumblebee could be the ...
2
votes
0answers
93 views

How to configure external USB touchpad for a laptop

I have a laptop that, obviously, comes with a touchpad and a keyboard. However, I have an USB keyboard with integrated touchpad that better suits my needs. I use Ubuntu 13.10 and I cannot find how to ...
2
votes
2answers
172 views

Difficulty with EncFS on CentOS

I'm trying to figure out encfs, but am having some difficulty. This is what I have done so far: I created 2 test folders mkdir /home/oshiro/Desktop/encrypted mkdir /home/oshiro/Desktop/decrypted ...
2
votes
2answers
811 views

How to reduce ClamAV memory usage?

I'm running a Ubuntu based web server (Apache, MySQL) on a 512MB VPS. This is more than sufficient for the website it is running (small forum). As I wanted to add some protection against viruses I ...
2
votes
0answers
100 views

How do I diagnose why Ubuntu is freezing? [closed]

I am running Ubuntu 12.04 LTS 64bit Desktop as a server at home. I run a Teamspeak server, and some php scripts every minute. After 12 to 168 hours (1 week) of being online, the server will freeze. ...
2
votes
1answer
50 views

What is needed for USB a device to appear under Sound in Ubuntu control panel?

I have a device that combines two audio interfaces and one HID interface. It enumerates correctly, as lsusb -D shows. Also, a trace with wireshark shows no errors - all descriptors are exchanged ...
2
votes
0answers
121 views

How to access Win7 on a dual boot machine?

I've been dual booting Win7 and Ubuntu for about 4 months and I got on it today to change the default boot on grub, because my girlfriend kept getting locked out when it reboots and, by default, goes ...
2
votes
0answers
195 views

Battery issues on a Lenovo Ideapad Z460 running Ubuntu 13.10

I've been using Ubuntu 13.10 on my Lenovo for more than 5 months without a problem. Yesterday I disconnected the AC adapter to take the laptop with me to the couch and it simply shut down. So I ...
2
votes
0answers
125 views

VPS freezes every few days (rcu_sched_state detected stall on CPU x)

Background: I have an Ubuntu 12.04 (64bit) in Xen virtualization environment. 1 GB RAM, 1 processor. Every few days I get the following error message: rcu_sched_state detected stall on cpu 0 ...
2
votes
1answer
252 views

How to open tty or execute some script when the shortcut Ctrl+Alt+F[1-6] doesn't work and X11 is partially frozen but system is still working?

I'm using Ubuntu 10.10 with Gnome on Acer Aspire One netbook. The X11 or just some parts of Gnome like panels and partially windows (details described below) are frozen which doesn't allow to do ...
2
votes
0answers
3k views

How to connect Ubuntu 13.10 to TV via HDMI?

I have a Lenovo Laptop with Ubuntu 13.10 running and would like to connect it to the TV via HDMI. In the dual-boot Windows, I just have to connect the HDMI cable and the screen is displayed on the TV. ...
2
votes
1answer
777 views

How to install Mono v3+ in Ubuntu?

How can I install the latest release of Mono in Ubuntu Saucy? In order to develop in a free OS, I need to setup Mono (that now supports .NET 4.5). This is what I did: Download and uncompress ...
2
votes
2answers
351 views

Finding error log related to specific crash in Ubuntu

Every time I try to start a specific program (Mathematica), my Ubuntu session crashes and I get thrown back to login screen. I want to find out 1) what is it exactly that crashes (probably X) and 2) ...
2
votes
1answer
254 views

sfdisk failing to write partition to disk [closed]

I am trying make my microSD card bootable to Ubuntu. I am trying to use sfdisk to create the partitions. When I do that this is the error I am getting: Using sfdisk to create partition layout ...
2
votes
1answer
2k views

Firefox: use system proxy settings, but where are these?

Running Ubuntu 13.10, Firefox is configured to use the system proxy settings, but it seems it fails to pick them up. The computer is connected to the network, and it's possible to establish a ...
2
votes
0answers
39 views

How to add EBCDIC support on debian/ubuntu

I have to add EBCSIC text support to deal with IBM OS text messages. I have succesfuly added EBCDIC support to a CentOS box by adding lang and encoding to /etc/i18n/sysconfig. I searched in the docs ...
2
votes
1answer
1k views

Linker error: /usr/bin/ld: cannot find -lgcc_s

I am trying to compile symlinks (tar.gz-file), which is a very small tool with one line for compilation: gcc -Wall -Wstrict-prototypes -O2 -N -s -o symlinks symlinks.c which gives the error .... ...
2
votes
1answer
112 views

corrupt debian package archives on self-made database packages

I set about packaging several large databases in some very basic debian packages so as to make life easier at my job. However, I'm now encountering some issues. Most of the databases will install ...
2
votes
0answers
69 views

What is the best way to emulate keybord shortcuts with touchpad gestures?

On my lenovo 0410 I am using an ubuntu derivate called elementary OS. You can press super+W to show your current windows like on most other ubuntu derivates. I would like to use this feature with a ...
2
votes
0answers
109 views

Unmount external drive with LVM2 Physical Volume on it

I've got my Ubuntu 13.04 install backed up to my external hard drive using deja-dup. I formatted the drive with lvm so I could use the rest of the drive for external storage while having the resize ...
2
votes
1answer
115 views

Is it possible to import vmail folder from old iRedMail to new iRedMail installation?

Basically, what I did: Copied vmail folder to my local machine. Reinstalled my VPS. Installed iRedMail again. Created same users on the same domain. Question is - can I somehow copy over my old ...
2
votes
0answers
28 views

Cannot Remove (Unmount) Server Share (NFS) from Mount List [duplicate]

Note on Duplicate - This has been marked as a duplicate quite a few times, so can someone link me to a solution which works for me? Because everything I've tried in all the other posts I've found, ...
2
votes
0answers
266 views

exit code of grep in trap where the script is launched by upstart service

recently I encountered a problem in ubuntu upstart and trap in bash shell. I use ubuntu 12.04 the upstart script(/etc/init/player.conf) is: start on (local-filesystems and runlevel [2345]) stop on ...
2
votes
0answers
165 views

Remmina doesn't work with keyboard when connected remotely

In order to bypass firewall/GPO constraint, I want to use Ubuntu as springboard to rdp to a Windows box on the same LAN remotely. I can xrdp to ubuntu via sesman-Xvnc module. I can run remmina from ...
2
votes
0answers
272 views

Webmin alternative that installs & runs on the client machine & communicate via SSH

Are there any Webmin alternatives that don't consume server resources but instead install on client machine & communicate via SSH client. So effectively all the actions made on that GUI are ...
2
votes
0answers
175 views

Possible to limit number of cups printers?

The way I have configured CUPS on my workstation is by echo 'CUPS_SERVER=cups.example.com' >> ~/.profile echo 'export CUPS_SERVER' >> ~/.profile When I open the print menu in any ...
2
votes
0answers
25 views

Route a particular process over another gateway [duplicate]

I have 2 internet connections on differnet interfaces. I have eth0 which is internal ip of 192.168.1.70 and then I have another network connection to a different network which is on wlan0 ...
2
votes
1answer
80 views

How to specify a daemon shutdown command with upstart?

In an upstart configuration how do I define what command should be used to shutdown a server. Lets say I have daemon that has two seperate processes. startup.sh - to start the server shutdown.sh ...
2
votes
1answer
46 views

Having error during Ubuntu installation

I have Ubuntu on a USB stick. When I boot from it (select boot from this USB), it shows some logs like usual. I also see the Ubuntu logo with 5 dots below, but then I get these: ext2_lookup deleted ...
2
votes
0answers
23 views

How to create an upstart process in Ubuntu? [duplicate]

I am trying to create a process to be automatically started and maintained by Ubuntu's upstart (Ubuntu 12.04). I have been looking at this page as well as on this page and I am aware of the upstart ...
2
votes
1answer
3k views

Unable to ssh into Ubuntu 12.04 LTS [could not resolve hostname (hostname): Name or service not known

I'm just starting with a clean install of Ubuntu Server 12.04. I've run: $ sudo apt-get update $ sudo apt-get upgrade I've added the following to /etc/hosts: 127.0.0.1 (hostname) The file ...
2
votes
0answers
2k views

Permission denied when Ubuntu is attempting to mount to a remote Windows share folder

Fellow guys, I encountered the error when I's mounting my Ubuntu server to a remote Windows share folder, the following is the error on terminal after I typed command line 'mount -a': mount ...
2
votes
0answers
111 views

Ubuntu : puppet f5 device config : Partition '' doesn't exist

This is a Puppet question that I've posted on the PuppetLabs forums with no response. I'm also posting here because I'm hoping that with a wider audience I might find someone knowledgeable re Puppet ...
2
votes
0answers
52 views

How to use Gnome's extensions

I have been trying to install some Gnome extensions from the site https://extensions.gnome.org. I get the dialogue asking if I want to install, but after I select yes, it fails silently. This is the ...
2
votes
1answer
559 views

How to install CLang using precompiled binaries? [closed]

How do I install CLang on Ubuntu, using precompiled binaries of CLang that I downloaded? Here's how I downloaded CLang: "LLVM Download Page" -> "Download LLVM 3.2" -> "Clang Binaries for ...
2
votes
0answers
204 views

Please enter PIN (Ubuntu, Desktop, 3G Modem) turn off

Upon having booted to my Ubuntu on my notebook which has an internal dial-up device for 3G network, which I don't use anymore, Ubuntu asks for my PIN for the sim card. How can I disable this pin ...