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.

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Anti Aliased Fonts with NoMachine NX

I am running nx server on a headless ubuntu server. Its desktop is to Unix -> Custom -> Emacs which gives me an Emacs window on the local machine. The only thing that does not work as expected is the ...
2
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0answers
43 views

Explanation of the building process of the kernel on Ubuntu/Debian systems

I'm getting into Linux kernel programming and I have successfully built my own kernel several times now. However, I have done it using step by step guides found from the internet and I don't really ...
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1answer
75 views

Is there a tablet for programming in the market today? [closed]

I need a tablet that could do Python (CPython), Java, C, C++ (also embedding) programming. So suppose that I would use android arm tablet for that and install Ubuntu on it. What I don't know would I ...
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2answers
126 views

Using only 3.3GB but I have 8GB RAM even on Ubuntu 14.04 64bit

I have 2x 4GB(8GB) RAM installed on my motherboard and BIOS/UEFI can confirm it, but on Ubuntu 14.04 64bit only has 3424776kB or 3.266120911GB. uname -a returns: 3.13.0-36-generic #63-Ubuntu SMP Wed ...
2
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1answer
61 views

Why doesn't Ctrl+R do anything in Ubuntu's terminal? [closed]

The keystroke Ctrl+R is important to me because it's the redo command in vim. However, it seems to do nothing at all in Ubuntu's terminal. When I press Ctrl+V and then Ctrl+R, nothing is registered at ...
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1answer
41 views

Uninstall application under /opt?

I have uninstalled acroread 9.5.5-1precise1 in software center, but those under /opt/Adobe/Reader9 seem intact: /opt/Adobe/Reader9$ ls * bin: acroread Browser: HowTo install_browser_plugin ...
5
votes
1answer
139 views

How to write/edit/update the OsIndications efi variable from command line?

In the need to enter the UEFI firmware setup utility while using ultra fast boot (keyboard drivers are not loaded during POST), I wish to write to the "Os Indications" efi variable. My OS is Ubuntu ...
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2answers
467 views

Problem installing Okular from ppa under Ubuntu

Under Ubuntu 12.04, I installed Okular from a ppa. After I installed it, I ran into the following problem of opening a PDF file: $ okular my.pdf Got bus address: ...
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0answers
52 views

unable to boot after installation : freeBSD

I have Ubuntu installed in my system. I just installed FreeBSD 10.0 in to my system. Here is the screenshot of GParted.     Where /dev/sda1 is where my Ubuntu is installed, and ...
2
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1answer
113 views

My cloud server came with PermitRootLogin without-password, is it normal?

I was just wondering if it is normal that in the Ubuntu 14 provided by my cloud hosting company,there is this configuration in the file /etc/ssh/sshd_config : PermitRootLogin without-password ...
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3answers
79 views

Listing nameservers in Ubuntu 14.04 without NetworkManager

In Ubunutu 14.04, I want to list the nameservers the machine is using. Normally I would use nm-tool to list them, but it appears NetworkManager doesn't run when no user is logged in via the GUI, and I ...
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487 views

Nvidia driver not working on latest kernel (3.17) and Ubuntu 14.04

I'm pretty new to kernel hacking. However, I have built my own kernel before (3.16) and it works. Now I tried upgrading to the latest kernel (3.17-rc7). I configure the kernel using the config file ...
2
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1answer
65 views

Commands for successful domain controller replication on Ubuntu / Samba4 / Zentyal

I have a Primary Domain Controller (PDC) and an Additional Domain Controller (ADC) running on two different machines at two different locations connected via a VPN. Both are running a version of ...
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1answer
95 views

Does Linux support the ThinkPad Helix 2?

I'm holding out for the ThinkPad Helix 2, which has a detachable tablet as a screen. It comes out later this month. I've heard that installing Linux on bleeding edge technology can be problematic ...
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0answers
37 views

How to improve the framerate of XCOM in Ubuntu?

I am currently trying to run XCOM: Enemy Unknown/Enemy Within on Ubuntu 14.04 with an nvidia GeForce GTX 260 graphics card. After some searching of the web, other nvidia users have also been having ...
1
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1answer
421 views

Make bluetooth device invisible / disable incoming pairing

I am using the bluez package for my bluetooth usb dongle on ubuntu server. I want to be able to initiate bluetooth connection from the dongle to a device, however a device itself shall not be able to ...
1
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1answer
434 views

How do I change file/directory permission of a nfs mounted directory, so I access files as user?

On a Ubuntu computer I mounted a directory from another computer using the following line in the fstab: 12.34.56.78:/space/Images /mnt/space/images nfs rsize=16384,wsize=16384,rw,auto,nolock 0 0 ...
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1answer
72 views

Etekcity Scroll E1 Wireless USB mouse does not work with Ubuntu 14.04

I have an Etekcity Scroll E1 Wireless USB Mouse that is not working with Ubuntu(but does work on Windows). According to their website, the mouse is compatible with Linux, and the Amazon reviews for it ...
2
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1answer
262 views

Docker error creating bridge

after installing Docker on a Ubuntu 14.04 minimal system with these commands, apt-get update apt-get install docker.io ln -sf /usr/bin/docker.io /usr/local/bin/docker sed -i '$acomplete -F _docker ...
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2answers
693 views

Installing Ubuntu-13.0 Desktop in Qemu

Following are the details of my system: Fedora Core-18, i686. I am trying to install ubuntu in the qemu. Following are the commands I executed: qemu-img create ubuntu.img 8G qemu-system-i386 -hda ...
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0answers
76 views

BeagleBone Black doesn't connect via Ethernet on laptop

I have a BeagleBone Black board connected to my laptop with only a serial connection and the Ethernet cable, and powered by the 5mm jack. The serial connection works fine, I can login at any time, but ...
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1answer
370 views

rs232 to usb not working

I also asked this question on AskUbuntu but there nobody comments on it I have a konig rs232 serial to usb adapter (no FTDI chip), but when I try to connect to a cisco switch/router (via Putty, ...
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1answer
1k views

Activate/deactivate WiFi on Lenovo B5400 under Ubuntu 14.04

I have a Lenovo B5400 with Ubuntu 14.04 x64. The Ethernet port works fine. How can I enable/disable the WiFi connection? I have no hardware button for this functionality. Under Windows I can press ...
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2answers
201 views

Can't install anything

I'm not able to install, update or do anything else with apt-get, aptitude, dpkg and so on. The lock-file /var/lib/dpkg/lock exists from boot-time on. When I delete it and run apt-get update, it ...
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20 views

Xenomai: binding failed: Cannot allocate memory

I installed and configurated xenomai using this guide. There are some examples under xenomai2.6/examples/rtdm/driver-api. To add rtdm module to kernel, I added my gid using below command echo "1000" ...
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1answer
68 views

Must issue a STARTTLS command first, even with it in main.cf

This is my first time setting up a linux server and I can't seem to get the email to work. Anytime I try to telnet and do the "mail from" command I get "540 5.7.0 Must issue a STARTTLS command first" ...
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2answers
1k views

Trying to SSH to local VM Ubuntu with putty

I have found similar questions in my searches here, but most of the answers are way above me at the moment, so here goes. I have set up a VM of Ubuntu server, have installed OpenSSH, and am now ...
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5answers
134 views

How to allow authentication with `sudo` using an alternate password?

I have been given a long password by my company for my Ubuntu system. This password is cumbersome to enter when authenticating with sudo repeatedly. Can I authenticate with sudo using a password ...
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0answers
27 views

Can someone explain why I have to use Kubuntu backports?

I'm trying to install the latest Okular on my Ubuntu 12.04. But the okular site, https://okular.kde.org/download.php, seems only have binary installation downloads. Why does it not offer source ...
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36 views

pptp and openvpn clients dhcp from server

I would like the following: Ubuntu server with PPTP server and OpenVPN server and a DHCP server Ubuntu clients all with the same PPTP username and OpenVPN client certificate. Client connects to ...
2
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1answer
344 views

Low PPPoE speed in Linux (Ubuntu)

We have 2 PC with Ubuntu 12.04 and connect with 1000M/bit cable. We then start iperf on both PCs and get 900m/bit speed using the iftop tool. However, when we setup PPPoE server on the 1st PC, and ...
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23 views

How do I unstick a stuck ubuntu system?

My Asus loads what appears to be a working Grub, but this closes (quickly!) to leave a password request in the middle of an empty screen. I have no idea what password the installers of this system ...
2
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1answer
2k 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 .... ...
1
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1answer
72 views

resize root volume with lvextend insufficent space error

My root partition is running out of space, so I'm trying to extend/resize it. Filesystem Size Used Avail Use% Mounted on /dev/mapper/u64-root 19G 18G 823M 96% / none ...
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1answer
23 views

Shall I keep the deb file created by checkinstall after I install from the deb file?

I have an old version emacs on my Ubuntu 12.04. I built the latest emacs from its source, and used checkinstall to create a deb package, and installed emacs from the deb file. Will it be good to keep ...
2
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1answer
48 views

Installing rsyslog from source - No package 'liblogging-stdlog' found

I asked this over in AskUbuntu but have had no luck with an answer. I am doing experiments with different logging systems. At the moment I am trying to install rsyslog from source so I can make some ...
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2answers
287 views

How can I add an external CD/DVD writer ?

I want to add an external CD/DVD writer to my Ubuntu 14.04 system (System 76 Ratel): the writers in my local electronics store have USB interfaces, and the drives are advertised as windows and mac ...
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2answers
118 views

Copy a long single-line text from a terminal with undesired change-line

locate ... | less outputs a long path, which is shown as several lines in the terminal, although it is actually a single line. I copy the path from the terminal by selecting the text with mouse and ...
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1answer
55 views

How to configure the MySQL APT repo on Ubuntu, on a non-interactive shell?

I want to install MySQL 5.7 on Travis CI, which runs Ubuntu 12 virtual machines. I'm willing to use the official MySQL APT repo: wget ...
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2answers
42 views

keep script running while screen is locked for a long time

I have a script that is running on my computer. The script is written in PHP under my XAMP server. It actually is reading some files from a remote FTP server and after processing them writes them back ...
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1answer
77 views

Running Ubuntu 14.04 from USB, can I Install Ubuntu on my HD without losing my persistent Live-USB data?

I've been running Ubuntu from USB for a few months and now I want to install it but without losing any of the data that I’m working on (data on the USB). Is this possible?
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2answers
354 views

nodm not working on bootup

I've setup and used nodm in the past (it is extremly simple and easy), but now cannot get it working. My base system is Ubuntu 13.04 server, but I have tried Debian and older Ubuntu servers as well. ...
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0answers
47 views

Permission Denied on an Executable File

I am newbie to linux so any help would be greatly appreciated - I tried searching and am having trouble finding an answer. Downloaded a compiled executable file (source written in c) in ubuntu I ...
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0answers
20 views

Xenomai: /dev/rtheap is missing

I tried to install Xenomai 2.5.5.2 on my Ubunto 12.04 PC following the steps in this guide. I haven't changed any configuration options. When I run sudo ./trivial-periodic, I get a message saying ...
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2answers
568 views

Linux Permissions vsftpd

I have mybb installed and running in /var/www/forums. I have two users part of the www group, logan and www-data. I have the recursive permissions of forums directory set to: chmod -R 755 forums ...
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2answers
43 views

How to solve this NFS unmunt problem? [closed]

I have working NFS (Networking File Sharing). It's server path will be mounted, but attempts to use umount are not working. It is getting some error. $ sudo umount /nfs_server/ /nfs_server was ...
0
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1answer
73 views

Unable to add PPA repository from terminal

I am trying to install ap-hotspot on Ubuntu-14.04 When I enter the command: sudo add-apt-repository ppa:nilarimogard/webupd8 It gives me this message "Cannot add PPA: ...
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0answers
36 views

usb Modem not working after install some package

I have DWM-156 D-Link modem on ubuntu 14.04 LTS,everything was fine before i install "telephony-service 0.1+14.04.20140415-0ubuntu1" SMS and Call manager,Now OS don't show modem connection in network ...
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1answer
61 views

NetBeans : Can't build Java project

I installed today on my old developer PC NetBeans (the newest) and I cloned my repo from BitBucket (I began coding with NetBeans on Windows 7). I tried to make a clean build, but the compiler has ...
3
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1answer
397 views

“Live” Processor hang under Ubuntu 11.10, how to diagnose/fix?

We recently upgraded to Ubuntu 11.10 on a virtual server. Since the upgrade, the server will periodically "hang" with processor use at zero (according to monitoring). Monit is still running and ...