Latest Ubuntu related questions

Score: 0
Manuel Oliveira avatar
Automatically lock screen after automatic login on Ubuntu 20.04
cn flag

I am using Anydesk on Ubuntu 20.04 and it will not let me connect before loggin in with the error "Remote display server is not supported (e.g. Wayland)". This happened when I switched from a NVIDIA driver do the XOrg driver.

Since I could not solve this issue, I decided to let the computer login automatically. However, I would like to have some protection and would like to lock the screen right  ...

Score: 0
Paradox avatar
Failed to pair: org.bluez.Error.ConnectionAttemptFailed
sm flag

Trying to Connect to My Bluetooth Device Using bluetoothctl :

*

bluetoothctl
Agent registered
[CHG] Device 46:0F:5B:A4:2D:69 RSSI: -12
[CHG] Device 46:0F:5B:A4:2D:69 Name: OnePlus Buds Z
[CHG] Device 46:0F:5B:A4:2D:69 Alias: OnePlus Buds Z
[bluetooth]# scan on
Discovery started
[bluetooth]# scan off
Discovery stopped
[CHG] Device 46:0F:5B:A4:2D:69 RSSI: -12
[bluetooth]# trust 46:0F:5B:A4:2D:69
[CHG]  ...
Score: 0
Ubuntu fails to boot - can load recovery mode of 5.4.0-77-generic but nothing else
cn flag

I am unable to boot my Ubuntu laptop — it gets stuck on a blank purple screen when I attempt to boot normally. This issue started after the laptop crashed attempting to join a Zoom call.

From GRUB 2.04, if I select Advanced options for Ubuntu then I am presented with six options - "Ubuntu, with Linux 5.4.0-80-generic", "5.4.0-77-generic" and "4.15.0-151-generic" each of which has a standard and a reco ...

Score: 1
Realtek wireless adapter not working after update to kernel 5.11.0-25
cn flag

I am facing networking issue when kernel updated on my 20.04 LTS from 5.8.0-63 to 5.11.0-25. All worked fine in 5.8.0-63. After update, the wifi networking is not available at all. I am running a VMWare installation with a tp-link wifi usb stick.

I tried steps from here. I did sudo apt install linux-modules-extra-5.11.0-25-generic and sudo apt install --reinstall linux-generic.

sudo modprobe iwlwifi

Score: 1
Frank Nocke avatar
Ubuntu 21.04 – make rectangular area screenshots by keyboard shortcut
in flag

I have used a keyboard short calling shutter -s and making an rectengular area screenshot under Ubuntu-MATE 16.04 for many years. No problems ever. Of course, shutter was already running... the redundant call would simply do it's job of captuing (and or tell the original instance, either way, no problem, proper capture, proper display in shutter window)enter image description here

Now, under Ubuntu-MATE 21.04 and with shutter  ...

Score: 2
kumetix avatar
Network performance extermely slow on Ubuntu 18.04.5 [Kernel 4.15.0-153-generic] / Dell XPS 15 9560 / Intel Corporation Wireless-AC 9260 (rev 29)
it flag

I own two laptops at home - one MacBook Pro and one Dell XPS 15 with Ubuntu 18.04.5.

Both are next to each other, connected to my home network.

MacBook Pro's speed test result:

Retrieving speedtest.net configuration...
Testing from XFone 018 (141.xxx.xx.235)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Partner Communications (Tel Aviv) [1.73 km]: 19.941 ms
T ...
Score: 1
Laider Lai avatar
Incomplete source code in plainbox-provider-snappy repository
eh flag

For the purpose of adding new test cases for CDTS I'm following the official document (https://checkbox.readthedocs.io/en/latest/snappy.html) to git clone plainbox-provider-snappy repository.

But the bin, data and units directories mentioned in the official documentation are not in this repository.

Browsing the source tree from https://git.launchpad.net/plainbox-provider-snappy/tree/, I still find ...

Score: 0
Purna Mahesh avatar
Errors in Adding repos
in flag

I'm using Ubuntu 21.04. Everytime i try to add repositories I'm getting the following errors and I'm not able to install any applications. This is not happening for a specific repo, but for every repo.

Refer this example

root@mahesh-3567:/home/mahesh# sudo add-apt-repository 'deb http://dl.winehq.org/wine-builds/ubuntu hirsuite main'
Repository: 'deb http://dl.winehq.org/wine-builds/ubuntu hirsuite ma ...
Score: 1
Ryhan avatar
How to check if preload is running or not?
cn flag

I've installed preload like 4-5 days ago. Still I can't see any performance difference. Is there any way to check if preload is running or not? I checked on system monitor but couldn't find it. I'm using Ubuntu 20.04 LTS.

Score: 0
DANISH ANGURAL avatar
Setting default boot option as ubuntu
cn flag

I have been struggling with setting ubuntu as the default os on boot. For the last 1 year i have been making do with pressing F9 on startup. I have tried almost all solutions provided on the internet (I hope so).
I use Hp pavilion 15-dk0047tx.

When trying to change the order from BIOS,pressing F5/F6 puts ubuntu above Windows, but pressing enter doesn't save the configuration and computer loads into  ...

Score: 0
Casper avatar
My system isn’t bootable, how can I do a kernel update?
fr flag

My system isn’t bootable because the hardware in my laptop is unsupported by the linux kernel I’m using. Is there a way I am able to boot into a live USB on my laptop, update the kernel on my laptop and boot back again?

Score: 1
Dan avatar
Turning off all password prompts for specific user
cn flag
Dan

I'm looking to turn off all password authentication prompts for a specific user (let's say Steve) on my Ubuntu 21.04 machine.

I added the line steve ALL=(ALL) NOPASSWD: ALL using sudo visudo and that removed the need to authenticate Steve's password when using sudo commands. However, I still get password authentication prompts when using GUI applications such as Ubuntu Software.

Is there a way to turn t ...

Score: 0
Nicholas Saunders avatar
how to start the snap install of tomcat?
mx flag

How is the tomcat server started?

nicholas@mordor:~$ 
nicholas@mordor:~$ sudo systemctl start tomcat
Failed to start tomcat.service: Unit tomcat.service not found.
nicholas@mordor:~$ 
nicholas@mordor:~$ sudo systemctl enable tomcat
Failed to enable unit: Unit file tomcat.service does not exist.
nicholas@mordor:~$ 
nicholas@mordor:~$ snap info tomcat-with-ssl
name:      tomcat-with-ssl
summary:    ...
Score: 4
BCM4352 802.11ac Wireless Network Adapter not working on kernel 5.11 and ubuntu 20.04
cn flag

Right now it works with kernel 5.8 but in 5.11 (installed this morning along other upgrades) the wifi adapter doesn't get detected at all and apparently there are no fixes until the drivers gets patched (unless i'm mistaken). Do someone know if/when bcmwl-kernel-source will get patched?

edit: current version of bcmwl-kernel-source is 6.30.223.271+bdcom-0ubuntu7

PS: To be honest each time there's a ke ...

Score: 0
oakpep avatar
Can't update GRUB
us flag

Yesterday I enlarged the system partition using gparted. Everything went fine, I rebooted and everything worked. This morning after turning on and selecting linux from bootlader - it does not turn on. I read that I should update GRUB, I use boot-repair with live-usb for this. Unfortunately the operation failed I'm getting these errors.

I also tried to repair and reinstall grub using a live USB accordi ...

Score: 2
do-release-upgrade silently fails upgrading from 18.04 LTS to 20.04 LTS in WSL
ru flag

It's high time I upgrade Ubuntu from 18.04 to 20.04! But I don't get very far before the process aborts without an error message. Is there a log file I can check for further information?

$ uname -a
Linux tribble 5.4.72-microsoft-standard-WSL2 #1 SMP Wed Oct 28 23:40:43 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubunt ...

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