On Friday 24 February 2023 10:03:31 pm Max Nikulin wrote: > On 25/02/2023 00:55, Roy J. Tellason, Sr. wrote: > > On Wednesday 22 February 2023 09:24:17 pm Max Nikulin wrote: > >> On 19/02/2023 01:01, Roy J. Tellason, Sr. wrote: > >>> So this got me curious, and I tried it out. In the terminal that's > >>> running inside of the virtualbox instance where I'm doing emails, it > >>> comes back with: > >>> > >>> :0 > >> > >> Have you tried to emulate multiple monitors in virtualbox? > > > > I'm not sure what I need to do with the computer to make this happen. > > VirtualBox can emulate multiple monitors, they may be represented as > several windows on the same physical device. It is convenient to test > behavior of applications in the configuration with multiple monitors. > There is an option in VM configuration UI.
I don't recall seeing that, I'll have another look... > >>> But in a terminal which is running on the host Debian system, it comes > >>> back with: > >>> > >>> :0.0 > >>> > >>> I wonder why the difference? > >> > >> My guess is that it may depend on graphics adapter and its driver. > > > > It's an older machine with a VGA output being used. I assume that I'll > > need to get some kind of a card with an HDMI output and a cable to make > > that happen. No idea what the driver is, probably nothing special. > > It does not matter if it is special or not. My guess (that may be wrong) > that even noveau vs. nvidia may behave differently. I have never gone > deeper, since I do not remember any problem with setting DISPLAY=:0 when > it was necessary. Driver in use should appear in Xorg.0.log, e.g. > > (II) modeset(0): [DRI2] DRI driver: i965 Only thing I'm finding that resembles that is these lines: [ 13041.620] (II) modeset(0): [DRI2] DRI driver: i965 [ 13041.620] (II) modeset(0): [DRI2] VDPAU driver: i965 > >> I have heard that a display may have several screens (it is not the same > >> as multiple monitors that show > >> different regions of the same display and screen). I have never tried such > >> configuration. > > > > Are you referring to multiple desktops? I have that going, for sure. > > My impression is that multiple screens of a display is not the same as > virtual desktops (and not the same as multiple monitors). I am not > familiar with X11 protocol so closely. Frankly speaking, I has a hope > that somebody will post a proper link. My curiosity is not strong enough > yet to filter search engine results myself. -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
