It is 100% Linux with 0% Android. I had a Volla Phone X for a few weeks.
Edit: It uses vendor blobs to communicate with the hardware. Besides that, it used some lineageOS code in Halium, which is a layer between ubuntu touch and the vendor blobs.
Try mailcow and follow their manual on configuration. Gmail, some big european mail providers, smaller organisations, my mails arrive everywhere. Despite having a somewhat dodgy tld.
Yes, using uuid is mandatory for that setup. Nvidia driver is only necessary if you want to use the hardware acceleration features, the basic display functions will work. And nothing forces you to not install intel, nvidia and amd drivers. You could also install the most common wireless drivers, if you know that you will use computers which rely on wifi for network connectivity and want to use the internet, which you don't want in general.
Efi vs mbr and secure boot are also issues for persistent live sticks.
Yes, but with some preparation. First, secure boot has to be disabled. Then you need a FAT32 esp partition on your SSD which has to become the system boot partition. Easiest way is unpluging all other hard drives and ssds and tgen installing the linux distribution of your choice to the ssd. You can install different drivers for all circumstances, it is for example no problem to have drivers for AMD and NVIDIA GPUs installed, only the right one will be loaded. You can also optionally prepare your ssd linux for mbr systems if you want compability with really old systems. Archwiki has a good article about that iirc.
No, they would not have driver issues "for sure". It will work just fine most of the time and you can prepare the ssd for hardware that has problens withnlinux in general like some wireless chipsets.
No, and this is disgusting. The worst part was disenfranchising jews, LGBTQI*-People, communists, disabled people, sinti&roma and others, locking them up under terible conditions and killing millions of them. Deliberatly killing millions of people to get rid of them.
The refreah rate is dependant on your display. On most monitors it is fixed to a certain frequency, in the past mostly 60 hz (hz means per one second), nowadays there is more diversity. That is how often there will be a refresh, meaning every pixel will change it state if there is a new image ready.
Frame rate is how often your pc has a new picture for the display.
Please credit Zack Wienersmith from Saturday Morning Breakfast Cereal Comics