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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
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0answers
989 views

no hdmi video after suspend on intel NUC6i7KYK

I have the latest Intel NUC, NUC6i7KYK (specs here), running close to stock Ubuntu 16.04. Its monitor is hooked up via HDMI. When it wakes up from suspend (S3), it never wakes up the display. The ...
10
votes
0answers
2k views

Problem with USB mouse in Ubuntu 16.04

Since I have Ubuntu 16.04 have not had any problems with the PS2 mouse, but a week ago I placed a new mouse USB. This mouse freezes randomly (Sometimes while I am using the PC and sometimes this ...
9
votes
0answers
882 views

Ubuntu 16.04 LTS - Some bluetooth headpones connect, some not

I'd like to ask for your help. The situation is as follows: Previously on Ubuntu 15 all bluetooth headphones used to work with some configuration files modifications described here and also on this ...
9
votes
0answers
1k views

pam_mount often unable to mount and hangs for minutes

I have some centrally managed Ubuntu workstations that authenticate users against Active Directory and mount user home folders on logon with pam_mount. This usually works as expected, but sometimes ...
7
votes
0answers
202 views

3 fingers drag and drop

Using 16.04 with Unity I have a touchpad and I'd really like not to have to hold a button while I select text or drag & drop something nor the fake double click before dragging, I never found that ...
7
votes
0answers
1k views

How to install Java9 with JavaFX?

I installed Java9 as described here. This works without any problems for any projects I tried without JavaFX. Unfortunately my company runs its UIs with JavaFX and those packages seem to be missing. ...
7
votes
0answers
2k views

LUKS keyscript being ignored … asks for password

Let me begin by saying I'm not new to LUKS. I've set up LUKS with keyscripts numerous times with and without LVM. I'm not sure what is actually going on here though. I have a system that has a single ...
7
votes
0answers
3k views

Gradle or Android Studio freezes Ubuntu

I've got a problem with my Android Studio/Gradle regularly freezing my entire system. What happens? I work on my Android Studio and at first everything is ok. For approx 5 - 10 builds/deploys ...
7
votes
0answers
822 views

Ubuntu 16.04 ~/.xsessionrc run twice on startup

i'm quite new to Ubuntu/Linux and i'm trying to start a desktop application at launch with a script located in ~/.xsessionrc. The script works but for some reason ~/.xsessionrc runs twice on startup ...
7
votes
0answers
410 views

Prevent pop up every time I plug in headphones in 16.04

Every time I plug in headphones, this pops onto my screen: I will never, for the rest of my life, use a headset. I have no interest in this option. Clicking "Sound Settings" does not provide the ...
5
votes
0answers
862 views

Why does my laptop say “Authentication failure” when resuming after suspending?

I have Ubuntu 16.04LTS on my laptop and, up until the last batch of updates were installed when, I suspended by closing the lid it would simply prompt me to enter my password when I resumed by opening ...
5
votes
0answers
3k views

How to make fingerprint work on ASUS vivobook s15 S510UQ

Maybe someone have posted this problem, but this is more specific explanation. I just bought a new laptop ASUS Vivobook s15 s510uq. Of course I install Ubuntu on it. Have tried many tutorial and also ...
5
votes
0answers
43 views

Install 15+ days old updates only

I want to install updates in my system if they've been submitted in repo for at least 2 weeks. I know the settings in software & update, but they don't quite meet my requirements. Is there ...
5
votes
0answers
277 views

How to show opened windows in current display with ALT +TAB switcher in ubuntu

I am using ubuntu 16.04, using multiple monitors, when I use ALT+TAB to switch between applications, all the windows in all monitors are coming up and it's confusing me. Can anyone know how to show ...
5
votes
0answers
4k views

vboxdrv does not exist. after kernel installation

I've installed kernel 4.12.0-041200rc4-generic, and since then when i open Virtual Box i get this root@machine:~# virtualbox WARNING: The character device /dev/vboxdrv does not exist. Please ...
5
votes
0answers
998 views

Issues running Civ 6 through Nvidia Graphics card on Laptop - Ubuntu 16.04 Lts

Essentially Civ 6 is only giving me the option to run through integrated graphics. I have an Nvidia GeForce 750M graphics card and have properly downloaded the recomended driver (nvidia-381). I also ...
5
votes
0answers
1k views

Black screen when waking up from suspend when using 960M GTX graphics card

My laptop is UX510UW Asus. It has 960M GTX and Intel® HD Graphics 520. When I use Intel GPU then everything goes fine; I have no problem when I wake up from suspend. But when I switch to 960M GTX then ...
5
votes
0answers
1k views

libGl, fbConfigs, swrast error in ubuntu 16.04

Recently installed Ubuntu 16.04 64-bit desktop. Graphics: Gallium 0.4 on AMD OLAND (DRM 2.43.0, LLVM 3.8.0) When I have seen other link where they provide solution for Ubuntu with Nvidia not sure ...
5
votes
0answers
763 views

Ubuntu freezes on opening android studio and browser

I've recently upgraded to Ubuntu 16.04 LTS. When I run both android studio and chrome or any other browser at the same time, the system freezes. Using Alt+SysReq+F or Alt+SysReq+K isn't working. Is ...
5
votes
0answers
426 views

Menu text disappears on Ubuntu 16.04

I have a problem on ubuntu 16.04 : sometimes, when I exit my computer from sleep state, I lose all my menu texts. You can see it on screenshots: The only solution I found is to reboot my computer. ...
5
votes
0answers
899 views

Ubuntu 16.04 has experienced an internal error “/usr/lib/tracker”

/usr/lib/tracker/tracker-extract seems to be the culprit. How can I fix this problem?
5
votes
0answers
697 views

Ubuntu GNOME 16.04: Shortcuts and function keys stop working after a while - why is that?

I switched from Windows to Ubuntu GNOME 16.04 a little while ago and noticed that frequently, at some point during a session my OS keyboard shortcuts (like CTRL+ALT+T to open up the Terminal, or ...
5
votes
0answers
574 views

Broken gui/graphics in Code::Blocks

I'm using Ubuntu 16.04.1 LTS. Code::Blocks looks like this: Sometimes editor window is visible but tool bars are invisible or unresponsive. How do I fix that ?
5
votes
0answers
242 views

Don't know how to remove packages to upgrade from 14.04 to 16.04

I have been trying to upgrade from 14.04 to 16.04 for a few weeks with no success. As many others (e.g., here), I get an error message saying that Ubuntu "could not calculate the upgrade". I tried to ...
5
votes
0answers
566 views

Ubuntu 16.04 Nvidia Prime - Resume from suspend to black screen

laptop = acer aspire cpu = intel i3-4050U gpu = nvidia 840m Vanilla offline install. On first boot I do updates. I reboot again and then install nvidia 361 & nvidia-prime. I reboot again. ...
5
votes
0answers
899 views

How to debug bluetooth speaker/headset connection

I am using a JBL Flip 3 bluetooth speaker. The device works very well with my smartphone. I can also use it with my Ubuntu 16.04 laptop. However, the connection procedure is quite annoying. After some ...
5
votes
0answers
768 views

Could not switch the monitor configuration (CTR 63)

I've found quite some answers to that question, but none of the answers solved my problem. When I lock my PC and come back after a while, usually one of my three screens (2x TFT + Laptop) is black ...
5
votes
0answers
470 views

Ubuntu says 'Unknown Audio Device' every time I plug my headphones in

Every single time I plug them in it says they're an "unknown audio device" and asks me to select if they're headphones, a headset, or microphone. I'm tired of having to select one every time. If it ...
5
votes
0answers
269 views

problems with deamontools-run and SV after upgrade to 16.04

i just upgraded to Kubuntu 16.04 from 14.04. However, installer warns me, it can be in unusable state. I haven't restarted yet and am afraid to do so. sudo dpkg --configure -a Setting up daemontools-...
5
votes
0answers
2k views

GLib-GIO-Message and Gtk-WARNING on Ubuntu 16.04

Trying to run a Python script on my Ubuntu 16.04 I got this following message: GLib-GIO-Message: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other ...
5
votes
0answers
1k views

Guake Fails to Start

Hello I have been using guake terminal for a while on ubuntu 14.04 and older version. After I have freshly installed (not upgraded) 16.04 xenial and installed guake it didn't work. I start the ...
5
votes
0answers
3k views

aMule crash with invalid_socket

I installed Ubuntu 16.04 (fresh install), and I am now unable to start aMule. It closes after that error message : ../src/unix/sockunix.cpp(143): assert "m_fd != INVALID_SOCKET" failed in ...
5
votes
0answers
3k views

USB 3.0 port not working properly

I am having some problems with a USB flash drive when my computer resumes from suspend. I am running Ubuntu 16.04 on a Dell XPS L521X. This laptop has three USB ports, 2 times USB 2.0 and 1 time USB ...
5
votes
0answers
4k views

Fresh Ubuntu 16.04 install with Nvidia GTX 1070 is crashing

I am one of the lucky people who received a MSI GTX 1070 Gaming X already, and so I decided to upgrade from 14.04 to 16.04 via a fresh install. The installation completed without any problems, and ...
5
votes
0answers
801 views

Headphones automatically mute when plugged

Since I've upgraded to Ubuntu 16.04 LTS I have the following problem: When I plug in the headphones they are muted and to resolve this I have to un-mute the "speaker" in alsamixer, as seen in the ...
5
votes
0answers
377 views

indicator-power status change delay

I recently migrated to 64-bit 16.04 LTS from 32-bit 14.04 LTS on my Toshiba L645 laptop. I am facing an issue with power indicator on the unity panel. When I change the power source to battery from AC,...
5
votes
0answers
592 views

Ubuntu 16.04 sometimes does not apply theme at startup

I have the arc theme installed and the numix circle icon pack. Sometimes, when I boot up the system, the desktop looks like this (note also how bad the text looks): However, if I do from the terminal ...
5
votes
0answers
3k views

16.04 Nvidia proprietary driver problems

On 16.04 xubuntu fresh install, I have an Nvidia Gtx 980 and an apple 30" 2560x1600 display, after installing proprietary nvidia drivers, I get two problems, the first, I can't log in during the ...
5
votes
0answers
2k views

After 16.04 upgrade install systemd-sysv failed, how can I check that I fixed it?

I updated to 16.04LTS from 15.10. It has been reported as a bug that the message 'not installed systemd-sysv' appears, which it also did on my machine and the installation aborted with the suggestion ...
5
votes
0answers
4k views

Ubuntu 16.04 Bluetooth firmware failed to load

I was running Ubuntu 16.04 with no problems form the daily builds. After a dist-update my bluetooth firmware failed to load. What to do? $ uname -a; lspci -nnk | grep -iA2 net; lsusb; dmesg | grep -i ...
4
votes
0answers
61 views

What could be causing constant fan noise on Ubuntu 16.04?

I have a lot of fan noise on ubuntu 16.04 on a new Dell laptop. I can't tell what's happening from the graphics card or any software program. The fan is working and never stops. My friend has the ...
4
votes
0answers
116 views

Connection Timeout when connecting to Bluetooth LE devices

I have a problem connecting to Bluetooth LE devices on my Dell XPS 13" 9360. It worked fine before, but suddenly connecting to a device always fails with connection timeout. I've tested with 10+ ...
4
votes
0answers
138 views

Adding a fake monitor for headless system breaks boot when a real monitor is connected

I'm trying to add a fake monitor in Ubuntu 16.04. This is a headless system and the problem is that remote desktop like teamviewer are really slow, so I tried the accepted solution here: Add Fake ...
4
votes
0answers
44 views

Debugging sporadic lightdm and network-manager hang

About 1 in 10 times I boot, I get a black screen with a blinking cursor. I then have to do Ctrl+Alt+F1, Log in and do "service lightdm restart" and my graphical desktop comes back. Probably 1 in 5 ...
4
votes
0answers
551 views

Command line connect to L2TP Windows Server VPN

I have been searching for a couple of days not much luck as and everything i come across relies on using the Network Manager UI. Could someone provide me with a noobish tutorial on how I would ...
4
votes
0answers
197 views

Lost my Ubuntu Software Centre; how can I get it back?

I am a new user to the Linux community and still playing with the system and IDK somehow my Software Centre is lost. I've tried updating and upgrading but I can't seem to reinstall the missing app. $...
4
votes
0answers
490 views

vt-x/amd-v hardware acceleration is not available on your system error in a Ubuntu VM

I installed Ubuntu 16.04 in my Windows 10 machine, Hardware Virtualization is enabled on it, as shown in the image here. settings of Ubuntu VM But if I run Vagrant in the Ubuntu VM, I get the error " ...
4
votes
0answers
112 views

Total RAM in “free” output smaller than real RAM size

I am running Ubuntu 16.04.3 LTS x86_64 on a Lenovo X1 Carbon 3460-4T9 computer having 4 GB of RAM. However, the free command only shows a total of 2610 MB: vmalep@X1:~$ free -m total ...
4
votes
0answers
52 views

Are there special functionalities to Ubuntu default directories in home?

A fresh Ubuntu (16.04.3) installation comes with a home directory ~/ that is filled with the following default folders: Music Videos Pictures Documents Templates ... From another post, I know that ...
4
votes
0answers
474 views

Battery charge/discharge cycle

My battery behaves normally until its charge reaches down to 80%. After that, it begins a cycle of charging/discharging with 10s on each state. Here is some data: deimos@kami:~$ upower -i /org/...