ubuntu-x-swat team mailing list archive

[Poppafuze <poppafuze@xxxxxxxxx>]

xrandr was reporting a virtual screen that was too small.  This is why
the display properties app prompts to allow a write of the config file.

It seems that this write is "Virtual 2048 2048" in SubSection "Display"
of Section "Screen", which is too small to allow the (modern 24")
screens to be manipulated correctly, so the display app goes back to
mirror after the logout/login.

It appears that this Virtual declaration is still required due to the
default choices made by X if it is not present.

Also, if there is more than one physical display adapter, the display
properties app appears to (or may) write this to the wrong Screen, which
is tied to the other "Device".

Proposed solution:

1.  Display Preferences (i.e. gnome-display-properties) calculates usable maximum virtual dimensions for both above+below and left+right, (and both), and makes the final choice of the virtual setting written based on which virtual dimensions fit the chosen screen orientation (this could include a near-diagonal arrangement of monitors).
2.  Display Preferences checks to see that nothing in the config file will cap the virtual screen size it uses for xrandr.
3.  Display Preferences makes more careful examination of the available gadgetry in xorg.conf as well as xrandr to ensure the correct gizmo is written to for the required virtual screen size to work on the correct monitor(s)/card(s).
4.  Display Preferences should handle and show multiple video cards, to allow better user selection and placement of monitors.

-- 
Stuck in Mirror Screen mode w/ Dual Monitors-no menu  bar
https://bugs.launchpad.net/bugs/367562
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