Latest Ubuntu related questions

Score: 1
Omiros Athanasakis avatar
Can't shutdown ubuntu 20.04
us flag

Everything was working fine, but suddenly i can't shutdown my ubuntu system. I've tried manually and from terminal but there is no difference. I also tried to change the grub file : sudo gedit etc/default/grub -made it so it looks like this- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force" but nothing changed.

I also tried GRUB_CMDLINE_LINUX_DEFAULT="" and trying to see which file blocks the s ...

Score: 0
HP Laserjet M1132 MFP cannot be installed
ca flag

I'm trying to install the drivers to a HP laserjet M1132 MFP on Xubuntu based on Ubuntu 20.04. I've downloaded hplip, but it doesn't find my printer, could you please help me? P.H. please, excuse my english. I'm Hispanic.

Score: 1
Installer cannot see the windows drive
uz flag

Similar problems have been reported in a couple of posts on the Net but the solutions suggested do not resolve my issue hence this post.

I have a HP Stream laptop running Windows 10 and sometime ago I managed to install Ubuntu on a SD card and dual boot with windows by creating Ubuntu /boot partition on the Windows drive. This works perfectly well (SD card is not a bootable device and hence the n ...

Score: 0
BluRay DVD won't play "Missing AACS configuration file"
ws flag

I am running Ubuntu MATE and am trying to get a BluRay DVD to play. I have VLC installed and but when I try to open the DVD I get the error message

BluRay error. Missing AACS configuration file. Your input can't be opened.

How can I fix it?

Score: 3
Lobon avatar
Every time I open a LibreOffice document, it is blank!
kz flag

Help: Every time I open a LibreOffice document, it is blank but I can open files in word office format.

When I open any LibreOffice it is blank! I realized that the data is in the files because I can copy/paste to my google drive and open it correctly from google drive using Firefox. If then I download it to my laptop and try to open it as a LibreOffice document it is blank, but If I download it  ...

Score: 0
Unable to verify 20.04.03 download
cn flag

I am trying to follow this guide here: https://ubuntu.com/tutorials/how-to-verify-ubuntu#1-overview I have downloaded the ISO file and I have the following files in my Downloads directory: SHA256SUMS SHA256SUMS.gpg ubuntu-20.04.3-desktop-amd64.iso

I am attempting the download/verify on a new installation of Ubuntu 21.10.

A user here: Cannot verify my download ver20.04.01 had a similar problem but the exp ...

Score: 1
MaGaroo avatar
NetworkManager: IPv6 Automatic Modes
pt flag

I was looking at the IPv6 config of my Ethernet connection in NetworkManager's connection editor. It seems there are 3 automatic modes alongside other options:

  • Automatic
  • Automatic, addresses only
  • Automatic, DHCP only

Can anyone help me with the differences between these options?

P.S. There are 2 following options in IPv4 settings and their difference is obvious to me.

  • Automatic(DHCP)
  • Automatic(DHCP) ...
Score: 2
crisprog avatar
Black window with "less", "nano", or "screen" - WSL - Ubuntu 20.04.3 LTS
cn flag

I'm using Windows Subsystem Linux with Ubuntu 20.04.3 LTS on my laptop (OS: Windows 10 Enterprise LTSC).

It worked flawlessly until a few days ago when I suddenly could not use less, nano, screen etc. anymore. Whenever I use one of these commands, I just see a blinking dash in the top left corner but no text is visible:

demonstration of issue

I can get back to the normal console when pressing the respective keys (e.g.

Score: 1
Bram avatar
Doing an udev rule at boot time
cn flag

I have a service that I want to run, only after udev has set the correct permissions on device files.

This seems to go wrong at boot time: My service is started, with the /dev/hidraw0 file permissions not yet set.

My service is defined as:

# cat /lib/systemd/system/turboledz.service 
[Unit]
Description=Turbo LEDz service
After=systemd-udevd.service

[Service]
Type=simple
User=daemon
ExecStart=/usr/bin ...
Score: -1
j2b avatar
Frequent System Hangs Requiring Hard Reboot Part 2
us flag
j2b

This continues from the post Frequent System Hangs Requiring Hard Reboot - no more room available in that post. After upgrading machine to latest BIOS, it hung again. Below is the syslog for the latest hang...

FIFTH HANG

Dec  6 12:17:01 vishnu CRON[88060]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Dec  6 12:18:21 vishnu gnome-shell[8567]: [8568:8568:1206/121821.647943:ERRO ...
Score: 0
Steve avatar
Does extended support for Ubuntu 14.04 mean it now supports PHP 7.4 or above?
in flag

With Ubuntu 14.04 extended support being pushed out by another 5 years, does it mean there will now be support for newer versions of PHP such as PHP 7.4? We have not been able to move off PHP 7.2 due to compatibility issues - is this also correct?

Score: 1
Does Ubuntu 20.04 LTS have an upper memory limit for Java processes?
us flag

I've got this problem: There is a server running "Ubuntu 20.04.1 LTS" and a JDK 8 application. The machine has 256 GB of memory.

Currently the JVM is started with the arguments -Xms25g -Xmx25g, however I want the JVM to use 32g or even more and I want to set the size immediately so that it's reserved and not calculated at runtime.

If I start the JVM with -Xms32g -Xmx32g it crashes after startup,  ...

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