Haswell composite desktop - laptop+HDMI monitor - how?

[Juan Ramón Molina Menor]

On Wed, 30 Mar 2016 13:30:04 +0100 (BST) Anton Shterenlikht <mexas at 
bris.ac.uk>> wrote:
 >>>From tijl at freebsd.org Wed Mar 30 12:37:40 2016
 >>>
 >>>On Wed, 30 Mar 2016 10:52:11 +0100 (BST) Anton Shterenlikht <mexas 
at bris.ac.uk> wrote:
 >>>> Using xrandr as in the handbook, Sec. 5.4.6:
 >>>> 
https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/x-config.html
 >>>> I finally got this configuration:
 >>>>
 >>>> % xrandr
 >>>> Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 8192 x 8192
 >>>> eDP1 connected 1366x768+0+0 (normal left inverted right x axis y 
axis) 293mm x 165mm
 >>>>    1366x768      60.00*+  40.00
 >>>>    1024x768      60.00
 >>>>    800x600       60.32    56.25
 >>>>    640x480       59.94
 >>>> HDMI1 connected 1920x1080+1366+0 (normal left inverted right x 
axis y axis) 509mm x 286mm
 >>>>    1920x1080     60.00*+  50.00
 >>>>    1920x1080i    60.00    50.00
 >>>>    1600x900      59.98
 >>>>    1280x1024     75.02    60.02
 >>>>    1152x864      75.00
 >>>>    1280x720      60.00    50.00
 >>>>    1440x576i     50.00
 >>>>    1024x768      75.08    60.00
 >>>>    1440x480i     59.94
 >>>>    800x600       75.00    60.32
 >>>>    720x576       50.00
 >>>>    720x480       59.94
 >>>>    640x480       75.00    60.00    59.94
 >>>>    720x400       70.08
 >>>> DP1 disconnected (normal left inverted right x axis y axis)
 >>>> HDMI2 disconnected (normal left inverted right x axis y axis)
 >>>> DP2 disconnected (normal left inverted right x axis y axis
 >>>> %
 >>>>
 >>>> The problem is that only about the leftmost
 >>>> 1/3 to 1/4 of the width of the HDMI is used.
 >>>> No graphical window can be moved further to the right.
 >>>>
 >>>> Am I missing something?
 >>>>
 >>>> Again, this worked perfectly for me (using xorg.conf)
 >>>> on a older laptop with nvidia driver and VGA monitor.
 >>>
 >>> Try specifying the virtual screen resolution in xorg.conf:
 >>>
 >>> Section "Screen"
 >>>    [...]
 >>>    DefaultDepth    24
 >>>    [...]
 >>>        SubSection "Display"
 >>>        Depth    24
 >>>        Virtual    3286 1080
 >>>        [...]
 >>>    EndSubSection
 >>> EndSection
 >>
 >> That didn't help. Although I'm not sure I follow your
 >> instructions correctly. If I set something like this
 >> in xorg.conf or in
 >> /usr/local/etc/X11/xorg.conf.d/screen-resolution.conf
 >> then it seems to be ignored on X startup.
 >> Perhaps I have to include both what you wrote and
 >> equivalents of:
 >>
 >> xrandr --output eDP1 --auto
 >> xrandr --output HDMI1 --auto
 >> xrandr --output HDMI1 --right-of eDP1
 >>
 >> also in a config file?
 >>
 >> Also, I'm confused by xrandr reporting only screen0.
 >> Previously, with nvidia, I had in xorg.conf screen0
 >> and screen1 positioned to the right of screen0.
 >> Perhaps xrandr uses a different terminology to xorg.conf?

I remember having some issues before getting HDMI with my Haswell laptop 
to work. Here’s the xorg.conf I’m using (it clearly needs some cleaning, 
but it works). I needed to explicitly define the highest resolution 
Modeline to force its use, as it defaulted to a lower resolution. Also, 
I had to set the Position of the external monitor. Only one Screen 
section is necessary.

---------

Section "ServerLayout"
         Identifier "Lenovo ThinkPad S440"
         Screen  0 "Screen0" 0 0
         InputDevice "Keyboard" "CoreKeyboard"
         InputDevice "Touchpad" "CorePointer"
         Option "AutoAddDevices" "false"
EndSection

Section "Monitor"
         Identifier "Internal"
         Option "Position" "0 0"
EndSection

Section "Monitor"
         Identifier "BenQ"
         Option "Position" "1600 0"
         Option "RightOf" "Internal"
#       Option "PreferredMode" "1920x1080"
         ModeLine "2560x1440" 241.5 2560 2608 2640 2720 1440 1443 1448 1481
         Option "PreferredMode" "2560x1440"
EndSection

Section "Device"
         Identifier "Card0"
         Driver  "intel"
#       BusID   "PCI:0:2:0"
         Option  "monitor-eDP1" "Internal"
         Option  "monitor-HDMI2" "BenQ"
EndSection

Section "Screen"
         Identifier "Screen0"
         Device     "Card0"
         Monitor    "Internal"
         Monitor    "BenQ"
EndSection

#Section "Device"
#       Identifier "Generic FB"
#       Driver "scfb"
#       Option "NoAccel" "True"
#EndSection

Section "InputDevice"
         Identifier "Keyboard"
         Driver "kbd"
         Option "XkbLayout" "fr"
         Option "XkbVariant" "latin9"
EndSection

Section "InputDevice"
         Identifier "Touchpad"
         Driver "mouse"
         Option  "Device" "/dev/sysmouse"
         Option "ZAxisMapping" "5 4 6 7"
EndSection

Section "Files"
         FontPath "/usr/local/share/fonts/terminus-font/"
EndSection

---------

I hope you’ll find a clue for your case.

Cheers,
Juan