>>1051728
>it sometimes puts popup windows on the wrong screen even then
I think that depends on the window manager, or possibly on the flags set when creating the software.
>>1051698
As i said, install gentoo (or stop using a login/session manager or however those pieces of shit are called).
Just put 'startlxde' or whatever in your ~/.xinitrc and log in from terminal and the desktop environment starts automatically.
'startx' is another command, but you don't normally need that.
Idk why it works like that, the keyword seems to be "modesetting".