Questions tagged [18.04]

Seventh LTS (Long Term Support) release of Ubuntu, code-named "Bionic Beaver". Released on 26th April, 2018. Will go End Of Life (EOL) April 2028. Only use this tag for version-specific questions.

6,346 questions with no upvoted or accepted answers
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Blank updates in Software Updater in 18.04

I have 18.04 installed, but just recently I noticed my updates are shown as blank and pre-downloaded even though I have configured updates as notifications only. I find this very odd and a little ...
5
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1answer
104 views

Weird top bar duplication

When I connect my HDMI along with my second monitor and built in display, I get this from my top bar, a weird two-row duplication. How do I get rid of it?
5
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0answers
133 views

Broken fonts for code formatting blocks in slack and chrome in Ubuntu 18.04

After I changed some fonts in tweaks-tool, in some programs (Slack, Chrome) font formatting for blocks of code became broken. I tried to restore defaults, but fonts in code blocks still ugly. How it ...
5
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0answers
2k views

Unable to build simple Hello world kernel module

I have just started writing kernel modules. I am referring to this guide. I wrote a simple Hello world program exactly as specified in the guide. #include <linux/module.h> /* Needed by all ...
5
votes
2answers
776 views

Black screen after wake up and wrong resolution with the fix

I'm trying to fix the Nouveau driver bug. When I wake up my computer from sleep, the screen remain black, no image. So I added the nouveau.modeset=0 in the grub file and after a reboot, the screen ...
5
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0answers
503 views

Ubuntu 18.04 not showing low battery warning

This question might seem very basic. I am new to Ubuntu (recently moved from Windows). I am using Ubuntu 18.04 and it doesn't show warning when my battery is low, instead laptop automatically turns ...
5
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0answers
532 views

Unable to upload any file from any browser Ubuntu 18.04

I'm new to Ubuntu therefore I don't know if this issue is already resolved or not. I'm unable to upload any file in any browser. When I did speed test with okla downloading is 10 Mbps but uploading is ...
5
votes
1answer
241 views

Udevadm settle not working

I just upgraded to 18.04 on my NAS. I have a script that prompts my user for a luks password and then mounts the drive after it's decrypted. This used to work: cryptsetup luksOpen /dev/md0 md0_crypt ...
5
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0answers
1k views

What can I do to remedy Ubuntu 18.04 lag (cursor lag, window lag, screen glitches)?

I have an HP Laptop 15-bw0xx and I've just installed Ubuntu 18.04.1. My system specs are: Memory 6GiB, Processor AMD r7 12 compute cores 4c+8g × 4, Graphics AMD/ATI Carrizo (rev c8) Radeon R7. I'...
5
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1answer
286 views

How to remove individual calendars from Gnome Calendar in Bionic Beaver

I just upgraded to Ubuntu 18.04.1 from 16.04. I noticed that there are several (around 12) calendars associated with my Google Calendar account. I would like to disable most but not all of them. How ...
5
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0answers
3k views

Microphone not working on 18.04 for any web or desktop conference app: No one can hear me

Hi I already tried most of the troubleshooting posts for making sure the microphone is not muted on alsamixer and for making sure the built-in microphone is selected under chrome settings, but when I ...
5
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2answers
2k views

How to change terminal background picture on Ubuntu 18.04?

I want to change terminal background on my Ubuntu 18.04 There was an option in Ubuntu 14.04 where you can go to edit > profile preference where you can change the background picture of terminal. ...
5
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0answers
903 views

Restarts after waking from sleep on Ubuntu 18.04

So far a number of times i faced this issue that the Ubuntu kind of restarts after opening it from sleep. While i expect it resumes the previously opened applications it show an empty desktop with no ...
5
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0answers
426 views

Gnome extensions give me error when updating

I update my GNOME extensions under this URL with the Chrome plugin Every time I log back into Ubuntu 18.04 I get a notification, saying that there are updates for my GNOME extensions. But when I ...
5
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0answers
8k views

Google Drive Sync

I would like to sync my files with Drive as described in the answer here. Following those steps, I always get the message: "Login expired. Log in to activate account" just after a successful login ...
5
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0answers
1k views

18.04 Per Monitor HiDPI Scaling?

I have Ubuntu 18.04 on my rMBP (2800x1800). I need the scaling on the built-in monitor to be 2x, but I also have a 1080p monitor that needs to be set to 1x. Currently I have to choose one or the ...
5
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0answers
3k views

bluetooth not working ubuntu 18.04

I have a similar problem to the one reported in this thread., but I'm running Bionic Beaver My machine is a Dell XPS 13. Wifi is working fine. In settings -> Bluetooth, I'm told No bluetooth found,...
5
votes
1answer
518 views

Lenovo Yoga 900 Internal Microphone Not Working on Ubuntu 18.04

The internal microphone suddenly stopped working in Ubuntu 18.04 on my Lenovo Yoga 900 laptop. It was working for a while before so I suspect some update caused it to stop working. The internal ...
5
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0answers
1k views

failed to enroll MOK key on upgrade 17.10 -> 18.04

I upgraded my development edition Dell XPS 13 9360 (i.e. single-boot Ubuntu) from 17.10 to 18.04. During installation, I was asked whether I wanted to create a MOK key to install third-party drivers ...
5
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1answer
6k views

What are the use cases for cloud-init?

Installing Ubuntu Server 18.04, I see the networking config in /etc/netplan has a .yml file that talks about CloudInit and networking configuration not persisting across instances. I have read https:/...
5
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0answers
864 views

Laptop won't wake after updating to 18.04

I recently upgraded to Ubuntu 18.04. Since the upgrade, my laptop sometimes won't wake up after being suspended (usually after it has been suspended for longer). When I open the lid, no lights go on. ...
5
votes
1answer
634 views

Computer can not enter suspend mode, freezes instead (ubuntu 18)

My problem is similar to this one: Ubuntu 18.04, my PC doesn't enter sleep mode. I will try to provide a bit more details. When I try to suspend the computer (by closing the lid, pushing the ...
5
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0answers
840 views

Now with Gnome in Ubuntu 18.04 how to Integrate wine systray with real one

I have recently upgraded to ubuntu 18.04 LTS. I installed wine and a couple of wine applications. Now when a wine windows program attempts to make a systray icon, a new window appears: How can I ...
5
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0answers
1k views

Ubuntu 18.04 super key switcher (gnome-shell app menu)

I notice that there is a tiny delay between pressing super key and app menu emergence. Is there a way to reduce it to zero ms ? Moreover it is very uncomfortable, that keyboard arrow keys focus is ...
5
votes
1answer
3k views

Ubuntu 18.04 Hdmi not detected

I have a problem since upgrading to 18.04 LTS version.After a fresh Ubuntu installation, when I plug the screen on my laptop (Dell xps 9560) nothing happens. On the screen it tells me there is no ...
5
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0answers
4k views

USB ports stops working after a while in 18.04

My USB ports stops working after a few minutes from boot and also after wake up. i am using 18.04 LTS this problem was also in 17.10. i have two 2.0 and one 3.0 in my hp 15-notebook . When I enter ...
5
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0answers
4k views

How to disable telemetry for all users

I installed 18.04 (clean install) on a computer that is intended to be a multi-user system. Every new user I create gets asked to opt out of telemetry on his or her first login (as part of the welcome ...
5
votes
1answer
1k views

High gnome-shell cpu on fresh 18.04 install

I just installed 18.04 desktop, with updates, LUKS and LVM, and third party drivers. Asus mobo, Ryzen 1300x cpu, 16GB ram, NVidia GLX 1030 graphics. As soon as I login, gnome-shell uses up to 85% of ...
5
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0answers
1k views

libMagickWand-6.Q16.so.2: cannot open shared object file. After upgrade from Ubuntu 16.04 to 18.04

After Ubuntu upgrade I can't run php commands. php -v shows me this: php: error while loading shared libraries: libMagickWand-6.Q16.so.2: cannot open shared object file: No such file or directory $ ...
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0answers
1k views

Slow access to Android files on Ubuntu 18.04 LTS

I have a Samsung Galaxy S6 running on Android 7.0, i upgraded my os from 16.04.1 lts to 18.04 lts, and now when i plug my phone on my computer with my usb data cable, i barely can't access it.. When ...
5
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0answers
853 views

Where does the Ubuntu 18.04 Dock look for apps and app icons?

Snap apps that I've installed do not appear in my Dock. I'm trying to find the environment variables I need to set to fix this. I read that the Dock uses XDG_DATA_DIRS env var to source the apps ...
5
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0answers
2k views

end Kernel panic - not syncing error when trying to install Ubuntu 18.04

I'm trying to install Ubuntu 18.04 on my system, but whenever I select Install Ubuntu it gives me the photo below. The computer currently has Ubuntu 16.04 on it, but that was to make sure the computer ...
5
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0answers
2k views

Plasma Could Not Correctly Use OpenGL 2 after upgrading to 18.04

After I upgrade Kubuntu from 17.10 to 18.04, and restarted it, all I'm seeing is my mouse cursor, which responds to my movements, and that's pretty much it. I tried to see if I can start up sddm, but ...
5
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0answers
386 views

suspend - Computer hard shutdown when suspending

I've seen this question has already posted but I still couldn't find any answers. So basically, when I close my laptops lid and reopen it, instead of showing the lockscreen it boots up from the ...
5
votes
1answer
1k views

Command to change brightness level in Ubuntu 17.10

What are the commands to increase and decrease the brightness level in Ubuntu 17.10? It seems like xrandr and xbacklight does not work with Wayland. I can still write the value I want on /sys/class/...
5
votes
2answers
230 views

open-vm-tools modprobe ERROR: could not insert 'vmgfx'

After doing a dist-upgrade yesterday evening the open-vm-tools-desktop are no longer working correctly. Which means, I can't resize to fullscreen. Trying to do so ends in a black screen. Taking a look ...
5
votes
1answer
2k views

Ubuntu 18.04, Bluetooth is DEAD

I am using ubuntu 18.04 on my ASUS-X550L laptop. In the settings it says "No bluetooth found. Plug in a dongle to use bluetooth." I tried sudo rfkill unblock all and systemctl restart bluetooth....
4
votes
4answers
172 views

Freeze at keyboard layout screen while installing Ubuntu

I want to learn Linux so I decided to install Ubuntu on my computer that is running Windows 10 now. Unfortunately, the process was not smooth. I downloaded the ISO from Ubuntu official website and I ...
4
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0answers
184 views

HDMI port not detected on Ubuntu 18.04 (with bumblebee installed)

After going through all related questions (dozens of them), I still couldn't figure out. system & hardware spec: Lenovo Thinkpad P51, NVIDIA Quadro M2200 and Integrated Intel Graphic (hybrid ...
4
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0answers
394 views

ubuntu 18.04 cannot connect to sennheiser pxc 550 via bluetooth

Hello I cannot connect the new sennheiser pxc 550. Although I was previously able to connect sennheiser HD 4.50 BTNC. Please help me with this issue. Thank you.
4
votes
1answer
3k views

HDMI not detected on Ubuntu 18.04

After upgrading to Ubuntu 18.04 from version 16.04, the external monitor is not detected anymore. I have tried using both VGA and HDMI monitor ports to connect using the USB-C adapter to my laptop. ...
4
votes
1answer
121 views

Remap apple keyboard F keys to be typical F1,F2,…,F12

I have the following keyboard : And would like to map the F keys to be typical F1,F2,...,F12. I'm using the following: Distributor ID: Ubuntu Description: Ubuntu 18.04.2 LTS Release: 18.04 ...
4
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0answers
241 views

How do I enable 'New Document' option without pre-set name?

When you right-click on an empty space, there's the option to create a new folder. Old versions of Ubuntu used to include the option to create a new text document as well, but now you need to enable ...
4
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0answers
1k views

Hard drive error : EXT4-fs error - Failed to write entry, ignoring: Read-only file system

I have a Asus R556L, running Ubuntu 18.04LTS on dual boot with Windows 10. The sata mode in the bios is AHCI. Ubuntu works fine, but after working for a while, it goes to the black terminal screen ...
4
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0answers
113 views

Separate two Firefox windows as if they were different apps

I'm trying to start two Firefox windows and have Ubuntu (18.04) treat it as two different apps. The reason I'm trying to do that is that I have two Firefox profiles. One has my company's proxy and ...
4
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0answers
191 views

How to get Alt+Tab on active monitor (Ubuntu 18.04 LTS)

Running Ubuntu 18.04 LTS. The tab switcher Alt+Tab only appears on the primary monitor. I would like it to appear on the monitor with the active window, similar to how it functioned in Unity.
4
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0answers
436 views

Ubuntu 18.04 is freezing randomly

I have installed Ubuntu 18.04 on my laptop Dell Inspiron 5000 (AMD Ryzen 5 2500U/8 GB RAM/1 TB HDD/Windows 10/39.62 cm (15.6 Inch) FHD/Vega 8 Graphics) Inspiron 5575 The os is freezing randomly even ...
4
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0answers
154 views

openprinting key for ubuntu 18

I'm trying to add openprinting repo (http://www.openprinting.org/download/printdriver/debian lsb3.2) to my computer for some reason the key I downloaded (Release.gpg) is not working. I keep getting ...
4
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0answers
1k views

How to install latest rlang and dplyr?

I want to execute a script that starts with library(dplyr) library(lubridate) library(ggplot2) I started out with regular r-base-core and r-cran-lubridate installed. I got: Error in ...
4
votes
1answer
2k views

systemd user service not found after reboot

I set up syncthing as a systemd user service on a 16.04 computer. Worked fine. Since I upgraded to 18.04 the service disappears upon reboot. After rebooting, I see: $ systemctl --user status ...