Bug 361953

Summary:	When monitors are not vertically aligned, some windows are wrongly vertically placed
Product:	[Plasma] KScreen	Reporter:	Simone Gaiarin <simgunz>
Component:	common	Assignee:	Sebastian Kügler <sebas>
Status:	RESOLVED NOT A BUG
Severity:	minor	CC:	mgraesslin, simonandric5
Priority:	NOR
Version:	5.5.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	KScreen settings Screenshot of the two screens together Screenshot of the two screens together systemmonitor xprop and xwininfo outputs

Description Simone Gaiarin 2016-04-19 07:56:28 UTC

I have a notebook and an external monitor. Since the screen of the laptop is in a lower position respect the external monitor I've configured KScreen accordingly (see attached picture). 

When I open some windows with a shortcut (System activity, MATLAB splashscreen, and maybe others) they are always placed in the leftmost screen (notebook in this case) even if the mouse is in the rightmost one. More important is that they are positioned as if the screen is a whole big rectangle (see attached picture 2) so that they are placed outside the screen. (I can only see the lower part of the windows, or in some case I cannot see it at all (but thanks to the minimization animation I can see where it was)).

The explanation is tricky, but the two images should help.

Reproducible: Always

Comment 1 Simone Gaiarin 2016-04-19 07:57:33 UTC

Created attachment 98458 [details]
KScreen settings

Comment 2 Simone Gaiarin 2016-04-19 07:58:03 UTC

Created attachment 98459 [details]
Screenshot of the two screens together

Comment 3 Simone Gaiarin 2016-04-19 08:03:23 UTC

Created attachment 98460 [details]
Screenshot of the two screens together

Comment 4 Sebastian Kügler 2016-04-19 11:11:59 UTC

Hi Simone,

Thanks for your report!

Could you run xwininfo and xprop on the respective windows? (So starting each program on the command line, then clicking on the window that is wrongly positioned, then pasting the output here)?

This can help us to find out where the cause for this problem is exactly.

Comment 5 Simone Gaiarin 2016-04-19 11:46:01 UTC

Created attachment 98463 [details]
systemmonitor xprop and xwininfo outputs

Here is the output of systemmonitor

Comment 6 Martin Flöser 2016-07-20 14:16:25 UTC

From xprop output:

> user specified location: 635, 330

the window explicitly asked to be positioned there. As a workaround you can create a window specific rule to ignore the placement, see also: https://blog.martin-graesslin.com/blog/2016/07/multi-screen-woes-in-plasma-5-7/

Overall this is not a bug in kscreen or kwin: the windows asked for it.