Ask Ubuntu Stack Exchange
Ask Ubuntu Stack Exchange

Questions tagged [16.04]

Questions about 16.04 are off-topic on Ask Ubuntu. Sixth LTS (Long Term Support) release of Ubuntu, code-named "Xenial Xerus". Released on April 21, 2016. Reached End of Standard Support (ESS) on April 30, 2021.

Ubuntu 16.04 (Xenial Xerus) was released on 21st April, 2016 and reached its End of Standard Support (ESS) on April 30, 2021. Questions about 16.04 are off-topic on Ask Ubuntu.

Release notes: Xenial Xerus

The sixth stable and Long Term Support (LTS) release of Ubuntu. Canonical will provide support for five years due to popularity of LTS usage in businesses:

  • Two years of support will include hardware updates
  • Remaining three years will consist of maintenance upgrades.

Notable new features:

  • 5 year support term
  • Linux kernel 4.4
  • Unity online search disabled by default
  • Unity launcher can be repositioned
  • ZFS (file system)
  • Ubuntu Software Center replaced with GNOME Software

Flavors and editions:

Ubuntu Flavors available under 16.04 (questions on all are allowed):

The 16.04 Ubuntu variants are not commercially supported by Canonical.

Ubuntu Editions available under 16.04 (questions on all are allowed):

Ubuntu releases:

17144 questions
262
votes
20 answers

Ubuntu 16.04 ssh: sign_and_send_pubkey: signing failed: agent refused operation

I just upgraded my Ubuntu System from 15.10 to 16.04 by completely wiping the Ubuntu 15 partition from my system. After installing Ubuntu 16.04 I recreated my ssh keys as I forgot to back them up, but whenever I attempt to use ssh I get…
Lektonic
  • 2,723
  • 2
  • 9
  • 12
213
votes
11 answers

Annoying flickering in 16.04 LTS - Chrome

I've upgraded from 4.4.0 to 4.4.8 and then 4.5.2 on Ubuntu 16.04 LTS 64-bit, and it's still happening. At 4.5.2 it's even more frequent, and mainly in Chrome (haven't tried firefox or opera just yet). Every time I open a new web page. Any way to…
Mookey
  • 4,697
  • 11
  • 37
  • 61
187
votes
8 answers

How to completely uninstall docker

I followed the uninstall instructions here. Then I ran these commands: sudo apt-get purge docker-engine sudo apt-get autoremove --purge docker-engine rm -rf /var/lib/docker So after I did all this I ran this command to see if docker files are any…
Luke101
  • 1,973
  • 2
  • 8
  • 4
180
votes
4 answers

How can I downgrade from PHP 7 to PHP 5.6 on Ubuntu 16.04?

I am trying to revert my PHP version to 5.6 from 7 and though I removed PHP 7 and then installed PHP 5.6 I still seem to be running version 7. Is there a simple method for moving through PHP versions where apache, phpMyAdmin and co are configured…
dibs
  • 3,419
  • 8
  • 26
  • 38
163
votes
12 answers

Wifi doesn't work after suspend after 16.04 upgrade

This particular version of the "doesn't work after suspend" came after upgrading to 16.04. It seems that the upgrade includes a Wicd applet (added to Metacity Classic Gnome task bar alongside regular network icon), but doesn't seem to work after a…
147pm
  • 2,095
  • 5
  • 15
  • 17
159
votes
9 answers

Could not load 'vboxdrv' after upgrade to Ubuntu 16.04 (and I want to keep secure boot)

I upgrade from Ubuntu 15.10 to 16.04 and since then VirtualBox 5.0.18 isn't starting my VMs anymore. It complains that 'vboxdrv' isn't loaded. So I try to load it and get the following error: $ sudo modprobe vboxdrv modprobe: ERROR: could not insert…
jans
  • 1,875
  • 3
  • 13
  • 14
135
votes
8 answers

How do I install Adobe Acrobat in Ubuntu 16.04?

I know the thread How do I install Adobe Acrobat Reader deb package downloaded from Adobe website? However, there is no Linux anymore in the installation site here. Unsuccessful attempts I do DriraWassim's proposal which does not add anything to…
Léo Léopold Hertz 준영
  • 4,537
  • 20
  • 73
  • 150
134
votes
10 answers

16.04 upgrade broke mysql-server

My overall upgrade went well, but I am left with a critically lingering issue of mysql-server not being able to install itself, and nothing I am trying gets it to work. This is the error I see when trying to install/reinstall it: Setting up…
TheGremlyn
  • 2,774
  • 3
  • 14
  • 15
123
votes
9 answers

16.04 LTS wifi connection issues with Realtek RTL8723BE adapter

I discovered several issues with wifi connection after installing 16.04 LTS. First, wifi doesn't reconnect normally after sleep or hibernation. Sometimes the network icon turns into a "up and down arrows"(I don't know what it is for) after waking…
Lixu
  • 2,594
  • 5
  • 14
  • 22
118
votes
11 answers

How can I hibernate on Ubuntu 16.04?

How should I successfully hibernate Ubuntu 16.04? I've tried almost every solution on the web but non of them was actually helpful. I found my problem almost completely similar to this one
Mahyar
  • 1,281
  • 2
  • 9
  • 6
112
votes
8 answers

How can I install CuDNN on Ubuntu 16.04?

For TensorFlow I would like to install cuda and CuDNN. How do I do that on Ubuntu 16.04?
Martin Thoma
  • 17,379
  • 23
  • 68
  • 93
110
votes
8 answers

systemctl failed to connect to bus - docker ubuntu:16.04 container

I'm trying to use the systemctl command in a ubuntu:16.04 docker container. I'm running the following command... systemctl status ssh However I'm getting the error... Failed to connect to bus: No such file or directory Why is this not working? Is…
Duncan Gravill
  • 2,275
  • 4
  • 10
  • 9
108
votes
1 answer

Clock shows wrong time after switching from Ubuntu to Windows 10

I have dual booted Windows 10 and Ubuntu 16.04 in UEFI mode (secure boot off). My time in BIOS is correct. When I boot into Ubuntu and then boot into Windows 10, it shows the wrong time. I have to correct it manually or by the internet in Windows…
Brij Raj Kishore
  • 2,078
  • 3
  • 11
  • 23
107
votes
3 answers

netstat or alternative in docker ubuntu server 16.04 container

Was netstat removed in 16.04? Is there an alternative to netstat available in 16.04? Or how do I install netstat in 16.04? I am running an ubuntu:16.04 container in docker for Windows, it seems that netstat is no longer available... It is available…
Duncan Gravill
  • 2,275
  • 4
  • 10
  • 9
107
votes
9 answers

Ubuntu 16.04 hangs on shutdown/restart

My Ubuntu 16.04 hangs on shutdown/restart requiring me to press and hold the power key to turn the machine off... I don't know how to report this as a bug and what commands to run to show the necessary hardware/sys log info? Any help would be hugely…
Tdenham
  • 1,071
  • 2
  • 8
  • 4
1
2 3
…
99 100