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Questions tagged [16.04]

Sixth LTS (Long Term Support) release of Ubuntu, code-named "Xenial Xerus". Released on 21st April, 2016. Will go End Of Life (EOL) April 2021. Only use this tag if your question is version-specific. Don't use this to file bugs!

12
votes
4answers
27k views

Unable to mount Windows 10 partition; it “is in an unsafe state” [duplicate]

I have both Ubuntu 16.04 LTS and Windows 10 Pro installed and I use them both very often. Sometimes, when using Ubuntu, I can see and use Windows partitions also. But sometimes, I cannot. I dont know ...
38
votes
3answers
23k views

GUI/Unity crashing in 16.04 LTS after updates 2018-01-04, compiz segfaults

The latest updates (4/1/2018) make my laptop constantly crash the GUI/Unity: (Intel Pentium su4100 processor) syslog: Jan 5 11:38:53 1810 kernel: [ 1850.327738] compiz[11911]: segfault at 0 ip ...
24
votes
2answers
23k views

System freezes completely with Intel Bay Trail

My system freezes completely at random, frequent intervals. I started to have the same problem in Ubuntu 14.04 but after recent upgrade to 16.04 there is no improvement, in fact it seems worse. When ...
67
votes
10answers
157k views

16.04 new installation gives grub-efi-amd64-signed failed installation /target/ ubuntu 16.04 at the end

I am installing Ubuntu 16.04 in an Intel NUC computer with UEFI enabled. I am using an SSD from another computer. During the installation I chose Erase the disk and make a new full install At the end ...
3
votes
3answers
4k views

Touchpad gestures and holding keys does not work

I am facing very weird problem on which I cannot find solution. One time touchpad gestures stopped working along with keyboard keys holding. Touchpad is moving the cursor but nothing more. When I am ...
139
votes
10answers
107k views

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 ...
111
votes
6answers
129k views

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 ...
11
votes
2answers
11k views

Ubuntu 16.04 Jan 3 2018 update causing screen/access issues [duplicate]

Yesterday (Jan. 3, 2018), I installed an OS update (Ubuntu 16.04), using the Software Center. My system isn't working correctly now. When my mouse rolls over the Launch bar, it disappears, then any ...
21
votes
4answers
7k views

2/15/18 compiz update broke unity

This compiz update forced removal of unity and ubuntu-desktop on my 16.04 Ubuntu system. The offending package that is missing, but unity needs, seems to be compiz-core-abiversion-20151010. It seems ...
8
votes
2answers
3k views

Bash script to clone Ubuntu to new partition for testing 18.04 LTS upgrade

Ubuntu 18.04 came out April 26, 2018 and I want to try it to upgrade my programs and convert my data but don't want to commit if there are bugs. I've shrunk Windows from 410 GB to 385 GB, rebooted ...
118
votes
9answers
356k views

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 ...
117
votes
8answers
169k views

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 ...
99
votes
8answers
194k views

Steam not opening in Ubuntu 16.04 LTS

I have never used Ubuntu or any other Linux OS before last Friday. For all I know, I might have installed Ubuntu wrong and be missing a component. I would prefer if you use simplest terminology ...
78
votes
6answers
133k views

Ubuntu 15.10 and 16.04 keep freezing randomly

This issue i had it with 15.10 and it's still here after the 16.04 upgrade. The whole system freezes, no keyboard/mouse input works anymore. I tried a variety of keyboard combinations (found on the ...
33
votes
3answers
12k views

Small snap loop devices visible in gnome-disk-utility OR what is the function of snap ubuntu-core

I just realized using gnome-disk-utility (3.18.3.1) that my 16.04 installation is featuring several small loop devices. In detail: 78 MB Loop Device (/var/lib/snapd/sn_ntu-core_352.snap -> /dev/...
12
votes
3answers
20k views

How do I make a persistent live USB of Ubuntu 16.04?

I need the persistent live Ubuntu of preferably 16.04 because I need to rescue my whole encrypted HDD of 16.04 as discussed in the thread How do I add myself back in sudo group in Encrypted HDD of 16....
39
votes
2answers
80k views

How do I upgrade from 14.04 LTS to 16.04.1 LTS?

So, today is July 21st and this page. gives me an option to download 16.04.1 LTS. However, attempting to upgrade gets me this message - $ sudo do-release-upgrade Checking for a new Ubuntu release No ...
5
votes
1answer
19k views

How to get Intel Dual Band Wireless-AC 3168 work on Ubuntu 16.04?

I searched many solutions on this site but most of them were referring to Broadcom Wifi drivers while mine has Intel one. Output of lspci -knn | grep Net -A2 arijit@HP-AU134TX:~$ lspci -knn | grep ...
22
votes
2answers
6k views

How can I fix Broadcom driver Wifi with 4.15.0-xx kernel on Ubuntu 16.04

I reinstalled a driver on Windows for Broadcom Network Adapter and after that my WiFi stopped working on Ubuntu(16.04) completely. I tried to reinstall drivers, using this commands: 1. sudo apt-get ...
70
votes
12answers
379k views

How can I install CUDA on Ubuntu 16.04?

For TensorFlow I would like to install CUDA. How do I do that on Ubuntu 16.04?
66
votes
10answers
113k views

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
21
votes
2answers
24k views

How to install Ubuntu 14.04/16.04 64-bit with a dual-boot RAID 1 partition on an UEFI/GPT system?

Update: Question and answer below also applies to Ubuntu 16.04 I have a computer with dual SSDs and Win (7) pre-installed on another disk. The pre-installation uses (U)EFI/GPT boot. I want to install ...
158
votes
4answers
461k views

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

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 ...
11
votes
1answer
42k views

No Wifi in Qualcom Atheros - Ubuntu 16.04 - Acer Aspire E 15

After Installing Ubuntu 16.04 in Acer laptop with Qualcom Atheros , it does not work. I tried , sudo rfkill list all 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: acer-wireless: ...
15
votes
3answers
76k views

I'm using Ubuntu 16.04 and there's no fglrx!

I'm using Ubuntu 16.04 and there's no fglrx! What happened?
19
votes
9answers
95k views

The new software center in Ubuntu 16.04 shows no application data found

This is the error I get when I open the software center. I've tried rebooting and running sudo apt-get update but I see no improvement. It worked earlier but I don't know what went wrong since then. I'...
75
votes
7answers
191k views

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 ...
12
votes
3answers
32k views

sudo apt update always giving Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)

So I am on my college network which requires me to sign in to the browser before I start using the internet. I do so succesfully but on a clean install of Ubuntu, when I try to do sudo apt update, I ...
43
votes
6answers
113k views

Cannot boot system due to start job running for hold

I've installed ubuntu-desktop on Ubuntu 16.04 Gnome and I picked lightdm and now once I restart, I get this error message when I press CTRL + ALT + F2: A start job is running for Hold until boot ...
54
votes
2answers
28k views

Nautilus not opening up, showing GLib error

When I launch nautilus from terminal the following error is printed and nautilus doesn't open up. (nautilus:25179): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->...
14
votes
1answer
34k views

Ubuntu on 32-bit UEFI (only) based tablet pc

I've created a bootable USB of Ubuntu 16.04 64-bit with Rufus, setting the drive to be a GPT for UEFI. Then I booted my tablet pc and I ran the UEFI BIOS, from which I turned secure boot off. I then ...
12
votes
3answers
58k views

How to install Epson printer drivers on Ubuntu 16.04?

I am having trouble to set up my Epson printer on Ubuntu 16.04. How can I install the drivers?
10
votes
2answers
1k views

Application that will lock screen after a set amount of time for Ubuntu

Is there an application for Ubuntu which will lock the computer after a defined amount of time(e.g. 30 minutes). I need it for kids to limit the time they watch cartoons. E.g. 30 minutes watching and ...
48
votes
4answers
167k views

16.04 Cannot install anything from Ubuntu Software center [duplicate]

Whenever I double click a deb file, it'd be opened in software center. However, when I click "install" button, it'd change to "installing" for a second but then turn back to "install" and nothing ...
8
votes
2answers
10k views

TP-LINK TL-WN823N Unable to connect to network

I have purchased a TP-LINK TL-WN823N (EU) V2.0 device, which is a USB device that should work as a Network Interface Card, allowing me to connect my computer to wireless networks. Unfortunately, I am ...
101
votes
7answers
434k views

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 ...
45
votes
4answers
76k views

Why disabling “Secure Boot” is enforced policy when installing 3rd party modules

When installing 16.04, I was asked to turn off "Secure Boot" if I wanted to install 3rd party modules/drivers. I did not comply. And when I installed manually the only 3rd party drivers I use (bcmwl-...
1
vote
1answer
2k views

When does Ubuntu 16.04 use /etc/apache2/ssl/apache.crt?

I have some Ubuntu 16.04 server running and set up one vhost in apache2 which uses (or should use) ssl. <IfModule mod_ssl.c> <VirtualHost *:443> ServerAdmin myemail@...
29
votes
3answers
62k views

After updating to 16.04, bluetooth audio A2DP mode stopped working

I have a nice bluetooth audio receiver connect to my HiFi stereo, and I used to be able to connect it in 14.04 as a A2DP sink with nice quality. After upgrading to 16.04, the device connects only as ...
56
votes
3answers
74k views

Updated kernel to 4.8 now missing firmware warnings

I upgraded my laptop to have the 4.8 kernel and during the process the following warnings came up. update-initramfs: Generating /boot/initrd.img-4.8.0-040800-generic W: Possible missing firmware /lib/...
54
votes
8answers
244k views

Can't view Wifi networks after upgrading to Ubuntu 16.04

I can't view any wifi networks after upgrading to Ubuntu 16.04 from 14.04. This issue also occurred when trying to upgrade to Ubuntu 15.10. This is what my network window looks like: I have Broadcom ...
32
votes
7answers
101k views

Ubuntu 16.04 + Nvidia Driver = Blank screen

ORIGINAL QUESTION UPDATE 1: Including Additional Drivers screenshot. I have tried installing both 361.42 and 340.96 and both times, I get a blank screen after restarting. ORIGINAL QUESTION: When I ...
29
votes
4answers
105k views

Proper Installation of Kali linux tools in Ubuntu 16.04 LTS

I think everyone has known - we need to install katoolin to use Kali Linux Tools on Ubuntu. Before did anything I had looked through the internet and also found out these solutions: Can I install Kali ...
15
votes
5answers
21k views

How to find previous boot log after Ubuntu 16.04 restarts?

My question is, how can I find boot log from previous system boot attempt? Today when first powering on my PC, boot process stopped on Ubuntu logo, when I pressed Esc I have seen several lines ...
15
votes
1answer
65k views

Ubuntu 16.04 OpenVPN

When I choose the Connection Type in VPN Connections, I have only PPTP and I can't find OpenVPN, but I already installed it via terminal with the command sudo apt-get install openvpn easy-rsa Why I ...
6
votes
5answers
34k views

How do I get an RT3290 wireless card to work?

After updating to 16.04 my Wifi card does not work anymore. And I have no idea what to do. lspci 04:00.0 Network controller: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe sudo lshw -C network *...
19
votes
2answers
9k views

Gnome terminal will not start

I just tried to install python 3.6 on my Ubuntu 16.04 system, and now I cant run the terminal from the launcher or from Ctrl+Alt+T. I tried to run gnome-terminal from XTerm and got the following ...
3
votes
2answers
5k views

16.04: How do I make cron create cron.log and monitor it in real time?

I know that cron events are stored in /var/log/syslog and I can use a command like: sudo cat /var/log/syslog | grep cron to see them. I'd much rather have the system keep a separate cron log file ...
3
votes
1answer
1k views

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

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 ...
203
votes
11answers
143k views

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)...