Bug 190371

Summary:	screen geometry off after enabling and disabling external monitor
Product:	[Plasma] kwin	Reporter:	Claus Wilke <wilke>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	tamerlan311
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Screenshot showing the problem Fix panel resize on screen remove.

Description Claus Wilke 2009-04-22 22:16:37 UTC

Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    SuSE RPMs

I have a laptop attached to an external monitor. After first enabling and then disabling the external monitor with xrandr, kwin gets confused about the geometry of my laptop monitor, and thinks the screen is smaller than it is. As a result, maximized windows cover only part of the screen, and extenders in plasma pop up at the wrong location.

This is a regression from KDE 4.2.0. Everything used to work fine until I upgraded.

I will attach a screenshot that shows the problem.

Comment 1 Claus Wilke 2009-04-22 22:22:15 UTC

Created attachment 33009 [details]
Screenshot showing the problem

Comment 2 Alex 2011-12-03 16:09:49 UTC

This bug stil presend in KDE 4.7.2.

But it`s not a KWin bug! This is plasma bug. When we restart plasma - all fullscreen window become normal.

Comment 3 Thomas Lübking 2011-12-03 16:28:53 UTC

it's likely bug #281185 (while it's tagged "fixed" for 4.7.1 - don't know)
please see bug #281185#c3 (comment #3 and following) and check whether this holds for you as well (so the bugs can be united and in doubt "re"opened here)

Comment 4 Alex 2011-12-04 09:37:35 UTC

(In reply to comment #3)
> it's likely bug #281185 (while it's tagged "fixed" for 4.7.1 - don't know)
> please see bug #281185#c3 (comment #3 and following) and check whether this
> holds for you as well (so the bugs can be united and in doubt "re"opened here)

Thanks for a reply.

I carefully examined the specified bug ( #281185 ). My system still affected.

But i found reason of problem. When screen removed from plasma, panel struts was not updated.

Affected all kde version exept (may be) 4.8

See my patch.

P.S. sorry for my bad english.

Comment 5 Alex 2011-12-04 09:41:23 UTC

Created attachment 66360 [details]
Fix panel resize on screen remove.

Plasma: On screen remove we must update Struts for all remain panels.

Comment 6 Thomas Lübking 2011-12-04 11:07:09 UTC

Thanks a lot for the patch.
I'll tag this a dupe, so the bug is now dealt at bug #281185

*** This bug has been marked as a duplicate of bug 281185 ***