Comment 3 for bug 260939

It's reproducible every time for me right now, simply moving windows to the second screen makes them disappear from the window list.

I've got detailed notes on how I configured Ubuntu if they are needed. The basic setup is that I'm running on an ATI Radeon x1950, I installed the Ubuntu ATI drivers, then the latest ATI drivers, and configured it for dual screen using the following aticonfig commands:

aticonfig --dtop=horizontal
aticonfig --initial --desktop-setup=horizontal --overlay-on=1 --ovt=Xv

If you have any problems reproducing this let me know, I plan to re-install Ubuntu anyway soon to check that my notes are accurate, so it's no problem to test that it's 100% reproducible.

Wnckprop results from a console window on the second monitor are:

Name: Bottom Expanded Edge Panel
Icon Name: Bottom Expanded Edge Panel
Icons: set
On Workspace: 0 ('Desk 1')
On Screen: 0 (Window Manager: compiz)
Window Type: dock or panel
Geometry (x, y, width, height): 0, 1000, 1280, 24
Class Group: Gnome-panel
XID: 16777219
PID: 5958
Session ID: <unset>
State: sticky, skip pager, skip tasklist
Possible Actions: make above, unmake above, make below, unmake below

I've attached a screenshot of my entire desktop, showing the windows on each monitor, and clearly showing the difference between the window list and the window selector.

Ross

> From: <email address hidden>
> To: <email address hidden>
> Date: Mon, 25 Aug 2008 08:43:17 +0000
> Subject: [Bug 260939] Re: Window list missing items on second monitor
>
> Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:
>
> * Is this reproducible?
> * If so, what specific steps should we take to recreate this bug?
>
> This will help us to find and resolve the problem.
>
> Could you also run wnckprop on one dialog which is not listed and copy
> that to the bug and take a screenshot showing the issue?
>
> ** Changed in: libwnck (Ubuntu)
> Sourcepackagename: gnome-panel => libwnck
> Importance: Undecided => Low
> Assignee: (unassigned) => Ubuntu Desktop Bugs (desktop-bugs)
> Status: New => Incomplete
>
> --
> Window list missing items on second monitor
> https://bugs.launchpad.net/bugs/260939
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “libwnck” source package in Ubuntu: Incomplete
>
> Bug description:
> Windows on my second monitor don't appear in the 'Window List', although if I add the 'Window Selector' I can find them, and Alt-Tab works ok too. This is a real nuisance, especially if I have a window minimised as they seem to disappear. I can't find any setting to correct this, nor anything on any forum indicating this has been seen before.
>
> I'm running Ubuntu 8.04, with ATI graphics drivers powering two monitors, and Compiz enabled. I think the graphics drivers are set to use 'overlay' mode on the second screen, but I'm not entirely sure what that's needed for.
>
> It also looks like dragging windows from the second monitor to the first causes odd effects. I have evolution mail running all the time so it's the first program on my window list. If I drag a program from my second monitor to the first, it can occasionally cause evolution to disappear from the window list. I haven't been able to reliably reproduce that yet, so I'll add more information if I ever get to that stage.
>
> Ross

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