Debian GNU/Linux is a widespread Linux distribution focusing on stability, security, and the free software philosophy.

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Why does /dev/random on ubuntu generate data slower than on debian?

During test of a copy function I've copied data from /dev/random to /dev/null and measured the throughput. On my Debian testing machine, I'm getting about 200 kb/s consistently. On Ubuntu 14.04, ...
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27 views

How to change from GNOME to MATE

I just installed Debian Testing (Stretch) on my computer, choosing both GNOME and MATE as possible desktop environments during the installation process. The thing is that GNOME shows up by default and ...
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DISPLAY environment variable is always 0

I have two monitors attached to the same desktop computer. However, when I do echo $DISPLAY, it prints :0.0 on both screens. Shouldn't echo $DIPLAY print :0.1 from one of the screens?
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70 views

How to drop privileges in a Debian Chroot?

I'm testing some software under Debian X32. Its a chroot environment, and its entered upon as root. Some of the tests are failing because of the root account: make test ... # Failed test 'Testing ...
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1answer
22 views

How to install Ruby 2.1 from package on Debian Jessie?

I'm trying to install Ruby 2.1 on Debian Jessie. As far as I know, 2.1 is the default version available to Debian Jessie. I ran sudo apt-get install ruby-dev and it seemed to install everything ...
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Debian - more network interfaces [duplicate]

I have dedicated server from OVH with additional ipv4, I have added the IP to the system interface configuration (debian), I can access the machine from both IPs now, but for some reason the first ...
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1answer
27 views

Getting `-bash: ufw: command not found` error on debian

I am unable to run any command on debian, I am getting the above error. Though when I use sudo same commands works. Can someone please explain this behavior?
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48 views

Shockingly slow SSD reads on Debian Jessie

I set up a desktop computer after nine months in the attic. I somehow doubt this is related but I don't remember it being this way. It took six minutes or so to boot, another couple minutes for GUI ...
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1answer
27 views

Rsyslogd Log entry about attack created by unknown application

I have a server running for testing purposes which lately caught some strange log entries in /var/log/syslog, /var/log/user.log and /var/log/messages. auth.log does not show anything suspicious. No (...
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1answer
22 views

Why BOOT MENU doesn't read USB?

I've a LENOVO G50. I'd ubuntu but I would install debian from USB. So, I'd run usb with debian iso etc. but didn't run. So, I'd try with Elementary but I don't liked it. So, I tried Kali Linux in USB ...
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14 views

Running a program out of tmpfs

I ask this question out of interest. I have linux installed (Debian) and I created a tmpfs partition in RAM for some temporary stuff, see here. So far so good. When I put images or text in there and ...
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82 views

Apache SSL error: Re-negotiation handshake failed: Not accepted by client?

I protect my wordpress administration by a client certificate. I had a trouble in march after upgrading from Wheezy to Jessie but it has been solved and everything ran well until my letsencrypt ...
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34 views

Unable to boot on Debian Live CD on my HP Laptop - “Selected boot image did not authenticate”

I'm trying to boot from a Debian Live CD (the debian-8.5.0-amd64-DVD-1.iso available here: http://cdimage.debian.org/debian-cd/8.5.0/amd64/bt-dvd/). It doesn't work when I just let the computer start ...
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2answers
54 views

Wired connection taking precedence of wireless

I have wired together two Linux machines. One machine has a wireless connection to my router whilst the other machine does not. The machine without wireless access (PC1) is configured such that it has ...
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1answer
23 views

Block common dos attacks

I have been searching for some basic IPTABLES protection agains Syn attacks and floods I have found thise commands: iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP //syn protect ...
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26 views

root crontab not executing

I'm setting up my Debian server to backup my databases with crontab, the mysqldump utility and gunzip. For some reason, my crontab lines appear to fail, especially the crucial one: 15 2 * * * /usr/...
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46 views

dpkg: error processing package util-linux (--configure)

I'm trying to upgrade my webserver from a clean new install to Debian Squeeze. When I tried to apt-get upgrade on my laptop way earlier, it worked out fine, but on the webserver, even apt-get dist-...
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1answer
26 views

Automatic detection of default gateway is wrong

I'm running Debian Jessie on RPi3 (Raspbian). The network connection is on wlan0. Usually, after filling the wpa_supplicant.conf fields, rebooting the network services leads to a working Internet ...
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27 views

How do I force all traffic through VPN

I am using Debian 8, with openvpn, I am able to connect to the vpn but traffic (ping google.com) isn't working (ping: unknown host google.com). Ontop of that I'd like to add an ip table to the ...
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Transmission: Watch-dir correctly configured, finds torrent, doesn't add

Running transmission-daemon on a debian 7 box and everything works perfectly. Except the watch dir. Transmission picks up any torrent placed in the directory but doesn't add it. Watch Dir ...
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1answer
28 views

GNU screen is displayed differently on different machines

I am running $ screen --version Screen version 4.03.01 (GNU) 28-Jun-15 on Debian Jessie via SSH. If I create a screen from a machine running Gentoo and then use it from there, Unicode characters (...
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1answer
34 views

Linux kernel “half configured”

I've been running Debian Wheezy for over a year with no problems until a week ago. For no obvious reason, the system has suddenly decided that the Linux kernel is only half-configured, and none of ...
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23 views

Establishing SSH connection on a local machine to a system running within VirtualBox

I'm running Debian on a Virtual box on Mac OS X. On the same machine, I would like to connect to Debian from the mac terminal. Simply put, I want to execute commands by Mac terminal not by writing ...
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19 views

Get openvpn configure on debain

I have recently bought a VPN, with a dedicated IP. I am running a webserver (via docker, using a forum called discourse), which I want to run through the VPN and have the website link to the VPN IP ...
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debian 8 usb headset mic not working

I have a fresh debian 8 install, with mate desktop, I am using Logintech H390 USB headset, the sound works fine, the microphone input driver is available but sound recording it's not recording ...
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1answer
81 views

Debian : -bash: ls: command not found

I have a vm to play with linux and wanted to try rbash. I followed a tutorial to make it work. Then I wanted to remove the stuff i've done, and delete a symlink from /bin/ls to /etc/skel/. But instead ...
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32 views

Why would a Linux computer with no Nvidia hardware get indigestion over an Nvidia kernel?

I'm running Debian Wheezy on a computer with ATI / AMD graphics and no Nvidia hardware. A week ago, with no obvious cause, apt decided that it needs to configure Nvidia graphics any time it runs, ...
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24 views

Would it be possible to boot natively into a XEN virtualized operating system without the user noticing?

What I am trying to accomplish is the following: Set up XEN on a headless Debian host. Set up a fully virtualized desktop environment based on Debian. Boot into that virtualized desktop ...
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30 views

How to install different versions of same library in Debian?

I'm trying to build an application (Visual Studio Code) from source on Debian. While trying to follow building instructions, Node-JS refused to install. # apt-get install nodejs-dev Reading package ...
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19 views

exiting chroot leads to getpt failure

On a Debian Jessie machine I have a rootfs image which I chroot in this way: mount myimage.img /mnt/myimage cp /usr/bin/qemu-arm-static /mnt/myimage/usr/bin/ mount --rbind /dev /mnt/myimage/dev mount ...
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1answer
28 views

Why would rsync be limiting syncs to ~252Kilobytes?

Here's a head scratcher for you... or at least it is for me. I am transferring a Wordpress site away from WP Engine to an Amazon instance. I am trying to upload the original Wordpress files from my ...
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1answer
273 views

Krunner not working on Debian Stretch

I have just installed Debian Stretch with KDE. When I press ALT+F2 to invoke Krunner I would just get a little white pixel on the top of the screen /the focus will go to this pixel/. I have tried to ...
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1answer
21 views

'dpkg-reconfigure ntp' and no configuration taking place

I've got a clock skew on an older Core2 duo laptop used for testing. Its causing make to complain about sources files being dated in the future after an scp. According to the Debian NTP wiki under ...
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21 views

Logging into new FTP server, but no directories show up

I've tried this with both ProFTPD and SFTP. I'm trying to chroot a user to /var/www/user however when I log in to the FTP server with their account, I get "/var/www/user: No such file or directory". ...
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1answer
68 views

ansible most simple case not running - “MODULE_ARGS is not defined” error

I'm trying to begin using ansible, so I am walking thru an introduction. I've installed ansible on Debian Jessie, using apt-get. It displays version 2.2 I've configured /etc/ansible/hosts file like ...
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12 views

Display basic image color on the framebuffer

I am trying to debug an issue during the installation of Debian on PowerPC. It seems the Open Firmware Frame Buffer (offb.c built-in driver) is not setup correctly, and has red channel inverted with ...
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1answer
41 views

Force modem to return IPv4 address

I recently got a new cable modem and when I reset the IP it gave me an IPv6 IP address. This is a problem because it is a hassle to type in this long string of hexadecimal numbers and also PuTTY does ...
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1answer
34 views

Is it possible to install virtualenv without python3 on debian?

I'm trying to install virtualenv without installing python3 on my debian jessie machine. I'm new to debian being a gentoo native. I'm trying to install virtualenv with: sudo apt-get install python-...
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1answer
38 views

Logout from terminal in Debian 8.2

I'm trying to log out from terminal. On Debian 8.3 I can use gnome-session-quit to achieve this, but on 8.2 there is no gnome-session-quit. I know that I can do pkill -u username to achieve this but I ...
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20 views

Debian with proxy and authentification and.. Google Chrome

I'm using both Debian 7 and Debian 8. I would like to configure a proxy. I've set http_proxy' andhttps_proxythat I need. I can do awgetrequest. I've also set it throughgsettings`: gsettings set org....
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Getting Clock/Time information from PC to an STM32F4

Assume I connect a microcontroller board (like an STM32F4) to a PC via USB. Is there anything in the USB communication protocol that contains host clock data? In other words, can I sync the ...
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1answer
8 views

R (debian): Is there a way to combine install.packages() with auto-apt or similar so that missing dependencies will be installed automatically?

I have R installed on a debian system. Often there is difficulty finding all the dependencies of a certain CRAN package. Is there a way to combine install.packages() with auto-apt or similar so that ...
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1answer
20 views

PDF reader with zoom [closed]

I'm working with largish PDFs (e.g. 17523x2383 dots @ 72dpi), where i need to zoom out (to see the overall picture and to navigate) and to zoom in (to read labels on the nodes). The PDFs are simple ...
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27 views

How do I start virsh with NVIDIA Optimus?

As my notebook has Optimus, I cannot use GPU forwarding. Instead, I use Virgl3d with KVM and virsh. This works absolutely fine and allows me to use at least a few 3D related applications. It however ...
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1answer
80 views

Strange ssh connection issue

Let me start by describing the situation. (Below RP = Raspberry Pi) In country A there is a RP 2 running raspbian jessie offering ssh. In country B I have my lan with a laptop, a RP B running wheezy,...
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Infinite login loop in Debian Virtualbox

I am trying to write a small character device kernel module and somehow, I managed to fill up my virtual hard drive by reading from it (??). Now as soon as I type in my password at the gui prompt, the ...
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1answer
52 views

nm-applet doesn't use appindicator

I've been trying enlightenment as DE in Debian Jessie. Unfortunately, they dropped the xembed support in E20, so only libappindicator-aware applications show up on the systray. Theoretically, nm-...
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1answer
68 views

Debian Testing, iwlwifi-7260 issue

I'm trying to install Debian Testing but I'm actually stuck in the wifi configuration. It asks for: iwlwifi-7260-13.ucode iwlwifi-7260-14.ucode iwlwifi-7260-15.ucode iwlwifi-7260-16.ucode iwlwifi-...
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windows partition wiped out with debian install CD and LVM

Going by my prehistoric knowledge on how to set up a dual boot with Windows and Linux, I set out to install debian over my Windows 10 installation. My single hard disk was originally partitioned into ...
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1answer
21 views

Repair Grub from inside the system (not using CD)

I was playing with Debian Jessie, installed it on a USB drive and (almost) everything was ok. In the end I noticed the original Grub (in the laptop's SSD) was over written. I'm able to login into ...