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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25
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9answers
1k views

Uninstalling programs on Linux

I've been using Windows and Mac OS for the past 5 years and now I'm considering to use Linux on a daily basis. I've installed Ubuntu on a virtual machine and trying to understand how I can use Linux ...
0
votes
2answers
916 views

Linux Ubuntu / Mint Live CD user-home customization

I'm trying to customize Linux Mint Live CD with these instruction (uck doesn't work for me). What I want is to have more icons at its Live CD user (/home/mint/Desktop) but I can't find /home/mint on ...
0
votes
1answer
719 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, ...
0
votes
0answers
30 views

Can't boot Windows XP from Grub2 in Ubuntu 14.04.2

I can't boot my Windows XP OS on a dual boot with Windows XP and Ubuntu 14.04.2. I already tried the command update-grub without improving. I can see the menu entry in Grub but when I choose Windows ...
-1
votes
0answers
15 views

Can I install and work with pycuda if I have ubuntu linux 32bit and boot from usb? [closed]

System is 32bit. Have Nvidia Geforce 610M graphics card on my laptop. Am booting ubuntu 14.04 lts from usb
7
votes
2answers
2k views

Evince fails to start because it cannot read .Xauthority

I'm logged in remotely over SSH with X forwarding to a machine running Ubuntu 10.04 (lucid). Most X11 applications (e.g. xterm, gnome-terminal) work fine. But Evince does not start. It seems unable to ...
1
vote
4answers
76 views

How to stop minute cron job?

I have a program written in python; my program scrapes a value from some financial website every minute and pushes that value into my DB. My program takes like 1 or maximum 1.5 seconds to do this ...
2
votes
2answers
1k 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 ...
62
votes
20answers
9k views

Root access that can't change root password?

We are having a little problem on a server. We want that some users should be able to do e.g. sudo and become root, but with the restriction that the user can't change root password. That is, a ...
3
votes
2answers
4k 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 ...
7
votes
2answers
110 views

Cursor is huge on Ubuntu due to high resolution monitor

So I have a 4k display, and for some reason Ubuntu decides that it's a good idea to give me a huge cursor instead of something normal. I don't have any DPI settings on the 4k monitor, and I don't want ...
5
votes
4answers
3k views

Prevent claiming of novelty usb device by usbhid so I can control it with libusb?

I have a USB rocket launcher that I wish to experiment with through libusb. However, libusb cannot claim the interface; presumably because the output of usb-devices lists 'usbhid' as the driver for ...
1
vote
1answer
23 views

Ubuntu runned on my usb stick meets often segmentation faults

I've installed ubuntu on my usb stick Sandisk Extreme http://www.sandisk.com/products/usb/drives/extreme/ , which is hardcorely efficient. But I met a trouble. In the random moments of the time ...
2
votes
0answers
23 views

'Docker' File System - Compatibility with Symbolic Links

The question is marked in bold if you wish to skip the explanation of our situation. I work as a developer for a server network. We deploy multiple instances of our servers. we have 5 types of server ...
1
vote
2answers
55 views

Run commands “without” terminal [closed]

Months ago I saw a guy running commands from a small, text-box-like window, showing nothing else other than the text-box for you to write the command. Such text-box would popup by pressing some ...
1
vote
1answer
30 views

updates cant be installed because of too little diskspace on /boot

I'm new to ubuntu and am running 14.04 on a lenovo notebook. I can't install updates because there is not enough diskspace on /boot. When I try "sudo apt-get clean" in the terminal, nothing happens. ...
6
votes
4answers
5k views

How do I switch from Ubuntu desktop to Ubuntu server?

I'm currently setting up a home server using a very, very old PC. It has Ubuntu 11.10 installed on it, but it can't actually handle the GUI. I want to install the server edition of Ubuntu, which is ...
9
votes
4answers
10k views

Why is this python error message generated whenever I type a nonsense command?

Whenever I type any "nonsense" command, this python error message is generated. Normal commands work fine. Any idea how to debug this? $ somenonexistingcommand Traceback (most recent call last): ...
2
votes
2answers
49 views

Peculiar issue with ping

I'm using ping from package iputils-ping (3:20121221-4ubuntu1.1) on Ubuntu 14.04. When pinging a host host2.lan with IP 192.168.1.20 that is down initially but comes up during the run of ping, I see ...
2
votes
1answer
61 views

LXC external IP configuration for containers

I rent a dedicated server and want to use LXC instead of KVM. I want to buy IPs for every single container. For now i have two external IPs: 193.X.X.30/32 213.X.X.31/32 I prefer a routing solution ...
1
vote
1answer
578 views

No ttyUSB when connecting USB-RS485 to Beaglebone Black

I'm trying to connect a externally powered board to control the motors of a robot to my BeagleBone Black. I'm using ssh over USB(the mini-usb) to control the Beaglebone from my laptop. The BBB is ...
1
vote
1answer
14 views

Permission denied (failed to create pid) when starting SphinxSearch [closed]

When I try to start the SphinxSearch service like this /etc/init.d/sphinxsearch start or this sudo /etc/init.d/sphinxsearch start I get the following error Starting sphinxsearch: Sphinx ...
0
votes
0answers
29 views

Ubuntu Linux with Zimbra can't send to Outlook

My issue is strange, in that my email server can receive messages from any domain and can reply to every domain except Outlook/Hotmail. Outlook/Hotmail addresses always bounce back and never give us ...
2
votes
0answers
31 views

“Cannot open shared object file” Error even though ldconfig is showning entry

I'm trying to run a older SIMetrix Version on Ubuntu 15.04 64bit (if there is a newer version of SIMetrix around tell me!). When I do it I get following error: ...
2
votes
0answers
12 views

Trouble viewing iPod in Rhythmbox

Once in a blue moon, my ipod (160 GB) will show up in rhythmbox on my ubuntu 12.04 laptop when I plug it it, but most of the time nothing happens. It shows up when I do fdisk -l, but when I try to ...
1
vote
1answer
39 views

Elementary Os. Nvidia and apt-get stopped working after updating windows 8.1 (Dual boot)

My computer have dual boot (Windows 8.1 and Elementary OS Freya - Ubuntu 14.04). Today, After installing updates on my windows partition Elementary OS loaded into a black screen. I've already ...
4
votes
1answer
1k views

Powertop doesn't display Power est. column

When I run powertop, it doesn't display the "Power Est." column that shows the estimated power consumption in Watts of each row. It should look like in the screen capture here: MacBook Pro Retina: ...
0
votes
0answers
30 views

Where does Debian (Ubuntu) store key mappings?

I've just replaced my Debian installation with Ubuntu today. In my old setup, I configured the Caps Lock to work as another ctrl, but I can't remember how exactly I did it before. However it got ...
3
votes
0answers
17 views

Creating Containers in OpenVZ

After using the instructions I found on http://www.unixmen.com/install-and-configure-openvz-in-ubuntu/ I installed OpenVZ on Ubuntu 14.04 LTS, which is running in WMware Workstation 10.0.3. Then I ...
1
vote
1answer
1k views

OpenSSH hangs after login without showing login prompt

I ran across an issue with ssh after fresh Ubuntu 13.10 installation on Lenovo T420. I tried git pull (which failed) and this led me to more general ssh failing. After spending some 2-3 hrs of ...
3
votes
2answers
151 views

Can't boot, task btrfs-transacti blocked for more than 120 seconds, how to fix this?

My computer was set up to boot Ubuntu 15.04 via UEFI. I have two disks. My first disk /dev/sda is a 128 GB ssd formatted as GPT, containing an EFI partition and a btrfs partiton with subvolume @ ...
1
vote
1answer
53 views

4TB USB drive consistence totally freezes Xubuntu 15.04

I've always found USB very flaky. I've experienced lots of random freezes (needing hard resets) when for instance I accidentally unplug a drive before unmounting. Drives would only sometimes ...
0
votes
1answer
686 views

My Ubuntu 14.04 LTS doesn't have sound

I installed Ubuntu 14.04 on VMware workstation version 10.0.0 on my Windows 7 machine. After installing I figured out that it doesn't have any sound so I checked the sound settings. All items seem to ...
0
votes
0answers
19 views

Can you install a Smart DNS server on Ubuntu server?

I'm a fan of smart-DNS services like "unblock" and so, as it gives me the VPN functionality (the part of the functionality that I need..) and saves me of server resources, such as traffic. I was ...
0
votes
1answer
16 views

Linux doesn't recongnize recent installations

I'm working inside a virtual machine, and I don't know why software installation does not work. I have to restart my machine, but that is not an option.
1
vote
2answers
31 views

Add column into Archive Manager interface

I've just made a mistake and I have removed the 'Name' column from the Archive Manager program interface. Here is the actual interface: Now, I can't see the 'Name' column. I've tried to modify ...
2
votes
0answers
128 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 ...
1
vote
1answer
4k views

How to install ap-hotspot

I can't seem to install ap-hotspot on ubuntu 12.04. I read somewhere that I should run the following commands: $ sudo su - # add-apt-repository ppa:nilarimogard/webupd8 # aptitude update # aptitude ...
1
vote
1answer
930 views

Disable login screen on Ubuntu 15.04 (Vivid Vervet)

In 15.04 Vivid Vervet, how do I disable the login screen so that it drops me into a console right off the bat? Back on 14.04, I did this by uninstalling lightdm, but when I tried that on 15.04, the ...
1
vote
1answer
3k views

minicom showing offline

I am trying to use minicom in Ubuntu. To do this I first connect my USB to DB9 converter, then I type this command on terminal dmesg | grep tty to check if my USB to DB9 converter is connected ...
0
votes
1answer
813 views

How to troubleshoot and fix Wifi driver on Wandboard DUAL?

Environment Wandboard DUAL C1 Ubuntu Trusty using these instruction Issue I was able to install Ubuntu Trusty and I am failing to get the Wifi driver to work. root@ubuntu-armhf:~# uname -a Linux ...
0
votes
0answers
27 views

Linux Driver for USB “reverse” mass storage device

I'm developing a USB device that I want to read and write in virtual filesystems that are in my computer. Basically the device needs to be able to read, write and get the virtual filesystem size. Some ...
0
votes
0answers
17 views

fsync on newly created folder? [migrated]

Can anyone explain why fsync can return EINVAL when I pass folder descriptor in it? There is my code, it is pretty simple: #include <dirent.h> /* Defines DT_* constants */ #include ...
2
votes
1answer
1k views

Which library files are needed to run a binary with an alternate libc version?

I built Firefox 26 on Mint 16 because the Ubuntu 10.04 build utilities are too old to build it. It does need to run on 10.04, however, since that's the target OS I'm building for. It built and runs ...
0
votes
3answers
68 views

Is there something like “common Linux commands”? [duplicate]

I come from the windows world trying to switch to Linux. Sorry for the naïve question but is there something like "common Linux commands"? For example in Windows, the command line is pretty limited, ...
0
votes
0answers
24 views

Install linux os on HP iPAQ Pocket PC h4350

A friend gave me a working HP iPAQ Pocket PC h4350. It works fine (it's really nice device) but has a (UGH!) Microsoft os and only syncs with MS pc. I'm running ubuntu mate. I have found that you can ...
0
votes
0answers
11 views

Iprint client on ubuntu

I installed ubuntu on my computer at work. I would like to use the iprint client and followed these steps. However, if I try to run the listener in /opt/novell/iprint/init.d it tells me: Can't open ...
0
votes
0answers
33 views

Elementary OS: Accidentally installed Ubuntu Login Screen

When I restarted my Elementary OS Laptop today I was shocked, because I was on an Ubuntu-styled glitching Login Screen. I guess I accidentally installed it, by trying to get ubuntu-tweak-tools on my ...
1
vote
0answers
67 views

How to set Ruby GEM_HOME and GEM_PATH

I'm a NOVICE user of Linux and using Linux mint 17.1 I've reinstalled Linux mint 20 time in last 3 days for that issue but could not fix it I'm trying to install ruby on rails using rvm what ...
1
vote
2answers
92 views

Unmet dependencies when trying to build chromium browser on Ubuntu 14.04

I am trying to install the necesarry dependencies for building Chromium on Ubuntu 14.04, and I am facing the following message: The following packages have unmet dependencies: g++-4.8-multilib : ...