Re: minidisplay-port on T440s working?

[Robert Elz <kre%munnari.OZ.AU@localhost>]

    Date:        Fri, 25 Jan 2019 14:43:59 +0000
    From:        Chavdar Ivanov <ci4ic4%gmail.com@localhost>
    Message-ID:  <f45fea4e-0542-6680-e841-4cfab5fe370b%gmail.com@localhost>

  | rather than a mirror, but as I do not intend to actually use it, I
  | didn't bother to find out how for now, probably another 'Xorg
  | -configure' with the second monitor and then some tweak).

On another system where I have two more or less permanently
connected monitors, I have this in xorg.conf

Section "ServerLayout"
        Identifier     "X.org Configured"
        Screen      0  "Screen0" 0 0
        Screen      1  "Screen1" RightOf "Screen0"
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

(along with definitions for Screen0 & Screen1)   I have no idea
if Xorg --configure can make anything like that, I did it by hand.

But on my laptop, I just use xrandr to move things around.
Provided the virtual desktop is big enough (mine says:

   Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767

and 32Kx32K is plenty, you could have 8 4K monitors side by side with
that) all it should take is a command like

	xrandr --output HDMI1 --right-of eDP1

though there might need to be additional args to get things "just right",
and perhaps to pick a resolution, etc.   xrandr has lots of options...

You can also do --left-of --above or --below, and --rotate, --reflect
and much much more.

The "Screen 0: ..." "current" values will just get bigger as there are
real screens to cause it.   Note that it is always a rectangle though,
if the monitors have different resolutions, you tend to end with areas
of "dead" space, which looks to applications (like window managers)
like usable screen real estate, but for which there is no monitor
to display the pixels.   That's unavoidable I think (though playing
with resolutions and scaling might sometimes help).

  | Where should I get the microcode from?

I got the files I have from some intel site I believe, just from a google
search for i915 firmware, or the expected filenames, or something
(it was months ago, when Kaby Lake support got added to NetBSD)
and then some poking around.

Most of what I have there is irrelevant, I am confident of that,
I added them just because they were available, and "just in case".
Two files should be all that is needed.

  | https://github.com/wkennington/linux-firmware/tree/master/i915, wasn't
  | sure if there is other canonical place to get them from (apparently they
  | are not in src/sys/dev/microcode).

No, they were not there.

kre