compiz team mailing list archive

[Jeremy Phelps <1818710@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

My setup:

- two 1920x1080 monitors, one in portrait orientation, the other in landscape. One of them is the
  built-in laptop monitor.
- one 3840x2160 monitor.

CCSM 0.9.13.1. Ubuntu package version: 0.9.13.1+18.04.20180302-0ubuntu1.

Setting up the bug:

Plug in all 3 monitors and, using CompizConfig Settings Manager, create
a 9-workspace desktop, arranged in a 3x3 grid.

Turn on Expo. Set it to "One wall per output". Move windows to all 3
monitors in all 9 workspaces.

Unplug the external monitors. For now, they'll stay in their workspaces.

Move some windows around again.

Plug the external monitors back in. The size of the wall grows due to
the addition of monitors, but the windows aren't moved to stay in their
workspaces, or even to stay within the monitors. They tend to move
upwards and to the left in terms of workspaces, but they're probably
maintaining their absolute pixel position with respect to the whole
wall. Plugging in monitors redraws the workspace boundaries, but the
windows don't move to stay in their workspaces.

Conceptually, a wall made with monitors of different sizes has voids
that are only visible when you zoom out. If you spread your windows out
evenly before plugging in the external monitors, some of them will end
up in the voids.

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

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packagers, which is subscribed to compiz in Ubuntu.
https://bugs.launchpad.net/bugs/1818710

Title:
  Compiz misplaces windows when multiple monitors at different
  resolutions are added and removed.

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