Show the version of your Mint-Distro

Terminal:

cat /etc/*-release

or shorter:

inxi -S

FeSTige doesn't show the running plugin (GUI)

Windows VST plugins running with FeSTige.

You have a list of VST-Plugins configured in FeSTige. Now you click on the one you want to use...
You can't see it (but your taskmanger says: It was started and is running).

Go to "settings" -> "main"
Switch to "dssi-vst" (from fst)

Now try it again. You'll see the plugins-gui now.

Linux can't see anything anymore OR can't boot with wrong graphics setup

After you have "hacked" around with your wrong graphic drivers. Or you just wanted do fiddle around new setups for the screen.

You boot again.
Now it hangs....
OR it shows nothing anymore.

Take a boot-able disk / stick and boot into that linux.

Search for the file on your drive of "the other defective linux on the machine".

/etc/X11/xorg.conf

Copy / paste this over everything:

Section "Device"
   Identifier   "Configured Video Device"
   Driver      "fbdev"
EndSection

Section "Monitor"
   Identifier   "Configured Monitor"
EndSection

Section "Screen"
   Identifier   "Default Screen"
   Monitor      "Configured Monitor"
   Device      "Configured Video Device"
EndSection

Now you can reboot your PC and it will start into a default resolution. Change it from there to whatever you like.
I was so glad I've found this tip!

Folder with sub-folders, change rights

sudo find "foldername" -exec chmod a+rwx {} ";"

Now you have all the rights on the folder selected, including the sub-folders with all it's files.

Mint/Ubuntu no sound with flash

After installing a flash driver (no official one) I had no sound at all.
Try installing flashplugin-nonfree-extrasound over "Synaptic Package Manager" (or Terminal). You can search for: "flash sound".

Reboot and the sound is there.