 "grub-install <device>... That..." <- thanks, my bad, it was set to boot Legacy only in BIOS (for an unknown reason), switching to Both  (Legacy&EFI) solved the issue. 
[14:49] <entity[m]> I am having issues, 2 screens but workspace switcher is the same on both displays
[14:50] <entity[m]> Switching at same time on both screens
[14:58] <OvenWerks> entity[m]: I think I need more information
[14:59] <OvenWerks> I take it you have two displays but I am not sure how work spaces mix in with that
[14:59] <OvenWerks> I have two displays
[15:00] <OvenWerks> I have the displays set up one beside the other and the desktop environment sees them as one big display.
[15:00] <entity[m]> Well I set virtual desktops and in sys tray if i do a virtual desktop 1 to 2 it is done on both monitors
[15:01] <OvenWerks> when I switch workspaces, both displays switch to the new workspace
[15:01] <OvenWerks> entity[m]: and what do you expect?
[15:02] <OvenWerks> Are your displays set to mirror? That is, do they both have the same thing on them?
[15:02] <entity[m]> Well to use virtual displays individualy on bith screens
[15:02] <entity[m]> No they are separated displays
[15:02] <entity[m]> And act as separated
[15:03] <OvenWerks> but if you move you mouse it will move from one display to the other?
[15:03] <entity[m]> But when i do virtual desktop switch, then it happens on both screens at a same time
[15:04] <OvenWerks> yes, because your machine sees both displays as if they were one big display
[15:04] <entity[m]> Is there solution for virtual desktops
[15:05] <OvenWerks> Assuming you are using a recent ubuntustudio with the plasma (KDE) desktop
[15:05] <OvenWerks> That question is poorly worded, I do not know what you are trying to ask
[15:05] <entity[m]> I am
[15:06] <entity[m]> Well virtual desktop switcher is doing switch on both display, it serves as same action on both displays
[15:07] <entity[m]> I cant switch display without switching on both screens
[15:07] <OvenWerks> You may be better asking this question in #kubuntu which ubuntustudio is built on top of. however, be aware that there was conference this past week and many people may still be traveling
[15:07] <OvenWerks> yes because the two screens are seen as one very large display no two displays
[15:08] <OvenWerks> I do not know if there is a way of treating the two displays as separate
[15:10] <OvenWerks> I have not had a problem with the standard way of doing things. I use 4 workspaces. If I need the same window on more than one workspace I can pin it to show on all