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.

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How to control cron in Ubuntu 16.04 LTS?

The old gnome-schedule program (which works fine under Raspbian Jessie) has been deprecated in Ubuntu, beginning with Ubuntu 14.04 LTS. So how do we control cron jobs in Ubuntu 16.04?
SDsolar's user avatar
  • 3,169
6 votes
1 answer
2k views

Error Updating: izx/askubuntu/ubuntu xenial Release' does not have a Release file [duplicate]

I am performing an update and its failing on the following: The repository 'http://ppa.launchpad.net/izx/askubuntu/ubuntu xenial Release' does not have a Release file.. Running a local Ubuntu server ...
Simon Davies's user avatar
6 votes
1 answer
12k views

Set title for each terminal tab in gnome-terminal using a bash script

I'm using Ubuntu 16.04 I want to open multiple terminal tabs, run commands and set title. I can open multiple tabs with this command: gnome-terminal --tab -e "command1" --tab -e "command2" but ...
d a i s y's user avatar
  • 5,511
5 votes
2 answers
39k views

16.04 ; power off discrete graphics (ATI/AMD)

On 12.04 I used to utilize this procedure, to power off my ATI graphics and prevent my system from overheating, it worked fine. After installing 16.04, I've been trying everything I could find on the ...
Mario Schoofs's user avatar
5 votes
2 answers
1k views

Cannot connect with wifi when CLOSE to router

I have an Elitebook 8570w running ubuntu 16.04, and an ac3200 router. Now I have the most peculiar problem with this setup: when I'm close to the router I cannot connect with it but when I go further ...
Thijser's user avatar
  • 1,051
5 votes
2 answers
688 views

Application always show in the third position in Ubuntu 16.04

After I update my ubutu to 16.04, I got a problem with Unity launcher. Whenever I open an application which is not listed in launcher, it will take the third position instead of last position. Has ...
Jared Chu's user avatar
  • 323
4 votes
3 answers
5k views

Upgrading from Ubuntu 16.04 to 18.04 broke the system completely!

I tried to upgrade from Ubuntu 16.04 to Ubuntu 18.04. First, after downloading and installing of packages, I was unable to login. Login screen hanged completely and it showed Failed to authenticate. ...
Gautam Vashisht's user avatar
4 votes
2 answers
5k views

Wifi not working on Realtek rtl8723be wifi adapter

I am using kubuntu 16.04 on this PC . The problem that I am facing is: Wifi issue: It doesn't discover wifi at times and keeps getting disconnected randomly. Also, when I am connected to a WiFi ...
Abhishek Bhatia's user avatar
3 votes
1 answer
731 views

How to create password protected archive in Caja file-manager?

I'm using Ubuntu 18.04 LTS. Previously in 16.04 LTS I used Nautilus for such action. How can I create password protected archive using Caja file-manager here?
N0rbert's user avatar
  • 99.8k
3 votes
1 answer
13k views

No sound on Ubuntu 16.04 with realtek ALC892

My problem I do not get any sound from any of my analog connectors. HDMI output from the Radeon card is working fine when i select that in pavucontrol. All jacks are showing (unplugged) in pavucontrol ...
Johan Schuijt's user avatar
3 votes
2 answers
2k views

Safely removing USB 3.0 drive freezes the system - why and how to fix?

I'm running Ubuntu 16.04.5 LTS amd64 with 4.4.0-140-generic Linux kernel. After one of recent upgrades I got new unexpected behavior - when I select Safely remove drive in Caja click Power off the ...
N0rbert's user avatar
  • 99.8k
3 votes
2 answers
14k views

Bluetooth keyboard paired but not responding 16.04

I'm running ubuntu 16.04 and I'm trying to pair my Microsoft Designer Keyboard to my computer. When I try to pair it, the GUI ask me to enter the pin code on my bluetooth keyboard and press enter. ...
Off's user avatar
  • 33
2 votes
2 answers
8k views

2016: Firefox Replacement for Adobe Flash

Two-part Question. My box is 16.04 As I understand it: Adobe Flash for Linux is no longer supported and I am wondering if the security updates are supported? What is the plan to replace Adobe ...
gatorback's user avatar
  • 5,765
2 votes
2 answers
4k views

Connecting Sony XB900N in Ubuntu 16.04

I'm not able to connect my Sony XB900N Bluetooth headset in Ubuntu 16.04. I tried using the default Bluetooth manager and blueman. Both failed to add the device. What could be the problem? Blueman ...
AMT's user avatar
  • 33
2 votes
2 answers
2k views

Why is Ubuntu Mate 16.04 runs hotter than Windows 7 on my Core2 and ATI Mobility Radeon 3xxx laptop?

Why is my Ubuntu Mate 16.04 runs hotter than my Windows 7 on my Core2 Penryn P8700 and ATI Mobility Radeon HD 3670 laptop? I ran lm-sensors and found that the GPU temp consistently hits 63 and 64 C, ...
K4ll-of-D00ty's user avatar
1 vote
2 answers
11k views

Virtual Host not working as expected when I'm using .dev domain extension

I'm doing a Laravel project and I need to set up a virtual host example.dev in my system. For that I've created a copy of 000-default.conf and named it as example.dev.conf and placed in /etc/apache2/...
Anoop S's user avatar
  • 23
1 vote
2 answers
8k views

Realtek RTL8188EE drivers in Xenial?

I just updated my pre-Secure Boot, pre-UEFI* Toshiba 2012 Satellite P755-S5390 laptop from 15.10 to 16.04. In 15.10, the wireless adapter worked fine. Now, Ubuntu refuses to acknowledge my laptop has ...
cat's user avatar
  • 1,652
0 votes
1 answer
2k views

Partial upgrade to 16.04.3 LTS error cannot create wakeup

New to all this so be please be gentle! I've run a partial upgrade to 16.04.3. I guess I should have investigated why I was offered a partial upgrade before doing it! I now find that it fails to boot. ...
ferrism's user avatar
0 votes
1 answer
2k views

Dual-boot Windows 10: cannot boot latest Ubuntu but only older versions

I have received a MSI GS65 8RE-052FR Stealth Thin laptop that comes with Windows 10 enterprise pre-installed (I was previously working with Windows 7). I am trying to install a dual-boot with Xubuntu ...
Darth Kangooroo's user avatar
264 votes
20 answers
371k views

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, ...
Lektonic's user avatar
  • 2,743
134 votes
1 answer
304k views

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY [duplicate]

When I run apt-get update, I get this error message: Err:18 http://dl.google.com/linux/chrome/deb stable Release.gpg The following signatures couldn't be verified because the public ...
Billal Begueradj's user avatar
69 votes
7 answers
90k views

Slow shutdown on Ubuntu 16.04 LTS (Stopping thermal daemon/running fit make remote CUPS printers)

After a clean install of Ubuntu 16.04 LTS, I am experiencing very slow shutdowns compared with 15.10. There seems to be one of two processes that hang upon shutdown. Startup is not affected at all. ...
ijustupdatednowwhat's user avatar
68 votes
3 answers
80k views

Nautilus won't launch [16.04]

If I try to launch Nautilus in whatever way (from Unity, Terminal), it doesn't launch. Terminal gives me these outputs: launch name@machine:~$ nautilus (nautilus:4367): GLib-GIO-ERROR **: Settings ...
aleskva's user avatar
  • 1,647
68 votes
1 answer
187k views

Upgrade to the specific php 7.1/7.2 from php 7.0 in Ubuntu 16.04 [duplicate]

How can I upgrade to php 7.1 from php 7.0 in ubuntu 16.04 ? If I do a php -v I get this message: PHP 7.0.8-0ubuntu0.16.04.3 (cli) ( NTS ) Copyright (c) 1997-2016 The PHP Group Zend Engine v3.0.0, ...
Michele Carino's user avatar
56 votes
7 answers
89k views

How do I modify "/sys/kernel/mm/transparent_hugepage/enabled"

I use mongodb 3.0 and I find a warning: MongoDB shell version: 3.0.0 connecting to: test Server has startup warnings: 2015-03-13T16:28:29.405+0800 I CONTROL [initandlisten] 2015-03-13T16:28:29.406+...
Feng Yu's user avatar
  • 877
44 votes
3 answers
120k views

Where do I find the core dump in ubuntu 16.04LTS?

I have a C++ program that does what it is supposed to do, but there must be some problem with pointer, since it crashes at the end and creates a core dump. My problem is that I cannot find the core ...
mattiav27's user avatar
  • 875
35 votes
4 answers
97k views

How to install gcc-7 or clang 4.0?

I want to try C++17 features and I want to install standard compliant compiler (preferably GCC). I'm totally new to Linux and Ubuntu and I simply don't understand a lot. I tried to follow https://...
nikitablack's user avatar
34 votes
2 answers
8k views

Can a vanilla Ubuntu 16.04 LTS Server run without snapd?

I've been running out of memory on some of my small-footprint Ubuntu appliances. I noticed that snapd was running and using lots and lots of RAM. I took a chance and stopped the snapd service and ...
Peter Turner's user avatar
32 votes
2 answers
136k views

How to install PlayOnLinux on Ubuntu 16.04

I was trying to install playonlinux by terminal on my Ubuntu 16.04 LTS but there is no commands for that version of Ubuntu (at least I didn't find them). So I was wondering if somebody can help me.
Bloober's user avatar
  • 323
31 votes
2 answers
57k views

Laptop headphone jack produces no sound

The headphones are detected, because when they are plugged in, they appear in the sound settings. The problem is that they just don't output any sound. Laptop speakers output sound just fine. I'm ...
pleasedesktop's user avatar
30 votes
3 answers
86k views

How can I install OpenJDK on Ubuntu 16.04? [duplicate]

Since I upgraded to the latest version of Ubuntu, I cannot install the Java OpenJDK package needed to compile Android custom ROMs. When I run sudo apt-get install openjdk-7-jdk, the following error ...
Hakam El Assouad's user avatar
29 votes
5 answers
21k views

18.04, 16.04 Headphones detected, but not switched on automatically after startup

Edit: the issue seems to also affect 18.04. I have this issue since 15.10, but it started to really grind my gears after making an upgrade to 16.04. Let's say that I have headphones plugged in. I ...
Błażej Michalik's user avatar
27 votes
5 answers
42k views

Is Ubuntu 4K-ready?

I'm planning on buying a 4k monitor, but have heard about some applications, (in general all operating systems) may not be ready for 4k which results in a very bad user experience. I mostly use ...
Antonio Sánchez's user avatar
27 votes
6 answers
48k views

No more AnyConnect compatible vpn transport in Ubuntu 16.04?

Following my previous experiences with setting up Cisco AnyConnect VPN connections on Ubuntu 14.04 I tried the same approach here by installing packages: sudo apt-get install -y network-manager-...
Darko Miletic's user avatar
26 votes
7 answers
125k views

How to install OpenCV 3.1 for Python 3.5 On Ubuntu 16.04 LTS?

How to install OpenCV version 3.1 on Ubuntu 16.04 LTS to work with Python 3.5.1? I tried this on a VM but obviously that is useful to do if you want to work with Python 2.
Billal Begueradj's user avatar
26 votes
2 answers
33k views

How to install ibus-avro in Ubuntu 16.04 LTS?

I tried to install ibus-avro, using the procedure that applied in Ubuntu 14.04 LTS. This procedure does not work in Ubuntu 16.04 LTS. Is there any other procedure to install avro in my new version of ...
Md Mahbub Alam's user avatar
24 votes
4 answers
9k views

Ubuntu shuts down instead of suspending

I have a Dell XPS 13 running Ubuntu 16.04. Over the last weekend, I've noticed that this laptop will shut down instead of suspending - whether it's a result of the lid closing or manually hitting ...
Yitz Deng's user avatar
  • 241
24 votes
2 answers
67k views

Stuck on blue screen while booting the system [duplicate]

I am using Ubuntu 16.04 and I am stuck into blue screen with no message. Its just showing a cursor nothing else. Any help is appreciated.
Deepak Mahakale's user avatar
23 votes
6 answers
17k views

errors upgrading from 14.04 to 16.04 about Unknown Multi-Arch type for compiz, libkf5akonadisearch-bin packages

I'm trying to upgrade my 14.04 machine to 16.04 using do-release-upgrade. After downloading the package lists for wily, I see the following errors: Unknown Multi-Arch type 'no' for package 'compiz-...
Jason R's user avatar
  • 455
23 votes
5 answers
78k views

I need to permanently disable the touchscreen input - Ubuntu 16.04 [duplicate]

Recently I installed Ubuntu 16.04 on my HP Envy 17t and everything works fine. However, I need to disable the touchscreen input permanently and I tried everything I could found but nothing works. The ...
Ionut Marisca's user avatar
23 votes
4 answers
146k views

"Set document metadata failed" when I run sudo gedit

I have upgraded 14.04 to 16.04 . Now I am trying to open the gedit from terminal by passing the command: sudo gedit /some/where/file.txt but it is throwing an error stating that: (gedit:2090): ...
alok_007's user avatar
  • 331
21 votes
8 answers
102k views

Ubuntu 16.04 nvidia drivers don't work

I've just installed a new ubuntu 16.04 , fresh install clean , logged in the first and only thing i did is selecting the proprietary driver 361 for nvidia , rebooted the machine . anfter rebooting i ...
saeed hardan's user avatar
19 votes
4 answers
83k views

How can I watch Amazon Prime videos using Firefox on Ubuntu 16.04?

How can I watch Amazon Prime videos using Firefox on Ubuntu 16.04? Currently Firefox version is 48.0. When I attempt to watch a video, I get the following Digital Rights Error message: Your web ...
kimbaudi's user avatar
  • 293
16 votes
1 answer
31k views

How to speed up boot time of Ubuntu when you find a possible cause in "dmesg" output? [duplicate]

After updating to Ubuntu 16.04. the boot time is a bit longer (more than 10-15 seconds). I looked at the "dmesg" output and found this: [ 23.882674] audit: type=1400 audit(1461650474.108:10): ...
Ljiljan Veselinovic's user avatar
15 votes
3 answers
8k views

Some icons and text randomly become invisible after waking up from sleep (Ubuntu GNOME)

Icons and application indicators in the dropdown settings sometimes disappear. This happens after waking up from sleep, and can be fixed until waking up from sleep again by pressing Alt+F2 and typing ...
Frederik Baetens's user avatar
15 votes
6 answers
17k views

"Disable Touchpad while typing option" gone in Ubuntu 16.04 LTS

This option, which was present in the "Mouse and Touchpad" settings panel in previous versions, is for some reason absent in 16.04 LTS. Does anyone know why this is, and/or how to fix it? Thanks.
metalhead696's user avatar
15 votes
2 answers
7k views

Where is the persistent option for Startup Disk Creator in 16.04?

The Startup Disk Creator no longer shows the option to create a persistent drive. How do I get back this setting in the application?
Rewarp's user avatar
  • 432
15 votes
6 answers
5k views

Encrypted home folder still accessible after logout

I you have an account with an encrypted home folder, you can't access the user's plain text data in their home folder if that user hasn't logged in, yet, since the system last booted up. This is what ...
UTF-8's user avatar
  • 5,710
14 votes
4 answers
58k views

Is it possible to install MySQL 5.5 or 5.6 on Ubuntu 16.04?

I recently upgraded to Ubuntu 16.04. Unfortunately I need to work MySQL 5.5 or 5.6. I tried many solutions to have MySQL 5.5 or 5.6 run on Ubuntu 16.04 like this Install MySql 5.6 on Ubuntu 16.04 . ...
idris's user avatar
  • 161
14 votes
2 answers
22k views

update-initramfs missing /lib/modules/4.4.0-13-generic

I just upgraded linux-firmware package and after that I used $ sudo update-initramfs -u -k all but I got some errors: $ sudo update-initramfs -u -k all [sudo] password for piotrek: update-initramfs: ...
piotrekkr's user avatar
  • 513

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