networking – Ubuntu Core disallows installation and why?

Here I downloaded last week Ubuntu Core for to set it up with Raspberry Pi.

At installation Core is demanding my e-mail-address.

I typed it, but my address is not accepted ?
So I have to break off installation.

Do I need to be registered for Ubuntu Core ?
And where is this ?

(sorry I am sometimes somehow “blind” for natural topics.)

imac – Wiped all disks for Ubuntu installation, but “macOS Recovery over the Internet” still knows my Wi-Fi password

I wiped all disks for Ubuntu installation. The macOS Recovery partition was gone.

Decided after half of an year, to install again macOS with macOS Recovery over the Internet

If you can’t start up from macOS Recovery

If your Mac can’t start up from its built-in macOS Recovery system, it
might try to start up from macOS Recovery over the Internet. When that
happens, you see a spinning globe instead of an Apple logo during

enter image description here

I was very much surprised the this “macOS Recovery over the Internet” knows my Wi-Fi password.

He didn’t ask for password and begin download stuff off the internet.

Can you explain why he remembers my Wi-Fi password?

magento2.4 – Connection refused error in command line Magento installation 2.4.1?

Magento removed web installation in 2.4.1 version, while installing from command line, I am getting below error:

 bin/magento setup:install --base-url=http://dev.magento.local/ --db-host=  --db-name=magento24 --db-user=root --db-password=Admin@123 --admin-firstname=admin --admin-lastname=admin --admin-user=admin --admin-password=admin123 --language=en_US --currency=USD --timezone=America/Chicago --use-rewrites=1 --search-engine=elasticsearch7 --elasticsearch-port=9200

SQLSTATE[HY000] [2002] Connection refused

In InstallCommand.php line 274:
  Parameter validation failed  

Linux Operating System installation – Super User

I want to install linux OS but when i boot linux files from usb, it show me this Error and start blinking and showing unlimited lines. It is happening in every linux OS(Kali, Parrot, Mint, Arch) same error in All Linux OS. Error is

(11.373034) ACPI BIOS Error (bug): Could not resolve symbol (_SB.PCI0.SAT0.PRT0._GTF.DSSP), AE_NOT_FOUND (20200528/psargs-330)

schengen – Business visit to EU for equipment installation

I am an Australian resident in the UK, and a partner of a dual UK-EU national, operating a small business. I am exploring undertaking short business visits to install technical equipment on-site at a customer’s facility in Germany, over several days. This would occur in 2021 (post-brexit transition).

Do I need any application beyond the Schengen Visa-free access given to Australian nationals?

Webflix installation help | Proxies-free

Hi guys,am here to seek help.I was istalling webflix script and i managed to install it and also succed to remove public folder from url.After finishing working on removing public folder i went into admin panel i tried to import movies and tv shows and all was working fine but the problem is that thumbnail and other images are not showing.Please can someone assist on how i can solve it.This happened after removing public folder from url by moving htaccess into root from public folder together with index.php

All other features are working fine but the only issue are the images,PLEASSE HELP ME OUT OF THIS

command line – openmpi installation fails locally and on remote server

I tried installing version 4.0.5.tar.gz on an Ubuntu 18.04 LTS server at school but it failed following instructions here that say:

shell$ gunzip -c openmpi-4.0.5.tar.gz | tar xf -
shell$ cd openmpi-4.0.5
shell$ ./configure --prefix=/usr/local
<...lots of output...>
shell$ make all install

So I tried version 3.1.6 and it failed again.

The error was:

  make[2]: Nothing to be done for 'install-exec-am'.
 /bin/mkdir -p '/usr/local/share/openmpi/amca-param-sets'
 /usr/bin/install -c -m 644 amca-param-sets/example.conf '/usr/local/share/openmpi/amca-param-sets'
/usr/bin/install: cannot remove '/usr/local/share/openmpi/amca-param-sets/example.conf': Permission denied
Makefile:1806: recipe for target 'install-dist_amca_paramDATA' failed
make[2]: *** [install-dist_amca_paramDATA] Error 1
make[2]: Leaving directory '/home/T00057442/openmpi31/openmpi-3.1.6/contrib'
Makefile:1897: recipe for target 'install-am' failed
make[1]: *** [install-am] Error 2
make[1]: Leaving directory '/home/T00057442/openmpi31/openmpi-3.1.6/contrib'
Makefile:1896: recipe for target 'install-recursive' failed
make: *** [install-recursive] Error 1

for version 3.1.6 on the server and locally:

make[2]: Nothing to be done for 'install-exec-am'.
 /bin/mkdir -p '/usr/local/share/openmpi/amca-param-sets'
/bin/mkdir: cannot create directory ‘/usr/local/share/openmpi’: Permission denied
Makefile:1789: recipe for target 'install-dist_amca_paramDATA' failed
make[2]: *** [install-dist_amca_paramDATA] Error 1
make[2]: Leaving directory '/media/nobu/UbuntuFiles/Downloads/openmpi-4.0.5/contrib'
Makefile:1880: recipe for target 'install-am' failed
make[1]: *** [install-am] Error 2
make[1]: Leaving directory '/media/nobu/UbuntuFiles/Downloads/openmpi-4.0.5/contrib'
Makefile:1879: recipe for target 'install-recursive' failed
make: *** [install-recursive] Error 1

so both times it is install-am? What is that and has anyone successfully installed openmpi or mpich? I need it for Ray Surveyor:

software installation – Installing Ubuntu server create problem in my Dell R540

My problem is that when i started install ubuntu server in my server machine(Dell R540), it starts showing me the problem that “there was a problem completing the installation” and it restart with same language prompt again. so I detect the problem and it is not with my hardware machine but it is because of the ISO fie I downloaded from the ubuntu official website.
I firstly downloaded the iso from here :
enter image description here

so this iso file is responding with “there was a problem completing the installation”
after that I downloaded another ISO from here :

View post on

It smoothly worked so the question is why these two are behaving differently.