Bug 359046

Summary:	Panel covers bottom part of maximized window after monitor is plugged out and in again
Product:	[Plasma] plasmashell	Reporter:	Andreas <shakti.rg>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	bernie, cmouzaoui, cruzki123, kde, matt, nate, notuxius, sudden6, xavier.besseron
Priority:	NOR
Version First Reported In:	5.12.2
Target Milestone:	1.0
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:	6.2.0
Sentry Crash Report:
Attachments:	konsole showing correctly (notice the tab at the bottom) konsole showing incorrectly (notice the tab at the bottom is below the panel) xrandr -q when everything behaves correctly xrandr -q when window is behind panel xprop of panel when it behaves correctly xprop of panel when it behaves incorrectly

Description Andreas 2016-02-05 23:50:19 UTC

My laptop apparently turns off its in-built screen if I close the lid, and each time I close the lid, effectively have a laptop without any screens at all attached, and then open the lid back up again the panel at the bottom will cover the bottom parts of a maximized window. When I open the screen lid again it seems like the windows are shown slightly before the panel, and the panel will overlap slighly in the bottom parts of the window.

At the same time the runner will also show itself offscreen.

Reproducible: Always

Steps to Reproduce:
In my configuration the I have a laptop that automatically shuts the power to the in-built screen (or so it appears, I have disabled all power management)
1. Close lid
2. Open lid
3. Observe that the panel will overlap the bottom parts of the window and that the runner is off screen.

Actual Results:  
Maximized windows, even new ones, will be covered by the panel. The runner is shown off screen.

Expected Results:  
Maximized windows not expanding below the panel
Runner shown on screen

Comment 1 David Edmundson 2016-02-06 00:29:26 UTC

Can I have:

 - a screenshot
 - output of xrandr -q
 - output of "xprop" and clicking on the panel
 - how do you know krunner is being shown if it's off the screen?

then reset the status field to unconfirmed.

Comment 2 Andreas 2016-02-06 00:42:40 UTC

Created attachment 97029 [details]
konsole showing correctly (notice the tab at the bottom)

Screenshot of konsole showing correctly

Comment 3 Andreas 2016-02-06 00:43:17 UTC

Created attachment 97030 [details]
konsole showing incorrectly (notice the tab at the bottom is below the panel)

Comment 4 Andreas 2016-02-06 00:44:58 UTC

Created attachment 97031 [details]
xrandr -q when everything behaves correctly

Comment 5 Andreas 2016-02-06 00:45:39 UTC

Created attachment 97032 [details]
xrandr -q when window is behind panel

Comment 6 Andreas 2016-02-06 00:46:06 UTC

Created attachment 97033 [details]
xprop of panel when it behaves correctly

Comment 7 Andreas 2016-02-06 00:46:28 UTC

Created attachment 97034 [details]
xprop of panel when it behaves incorrectly

Comment 8 Andreas 2016-02-06 00:49:18 UTC

See attachements for screenshots and outputs of the commands.

I can not for certain say that the runner is running off screen but it is getting focus and working. I can "show" it with keyboard shortcut, type for instance dolphin and hit enter and dolphin will start. I also see that input focus moves from the current window to something invisible.

Comment 9 David Edmundson 2016-02-06 00:51:28 UTC

Copying and pasting the relevant bit:

Good

_NET_WM_STRUT(CARDINAL) = 0, 0, 0, 27
_NET_WM_STRUT_PARTIAL(CARDINAL) = 0, 0, 0, 27, 0, 0, 0, 0, 0, 0, 0, 1365

Bad:
_NET_WM_STRUT(CARDINAL) = 0, 0, 0, 4294966555
_NET_WM_STRUT_PARTIAL(CARDINAL) = 0, 0, 0, 4294966555, 0, 0, 0, 0, 0, 0, 0, 1365

Docs:
_NET_WM_STRUT, left, right, top, bottom, CARDINAL[4]/32

_NET_WM_STRUT_PARTIAL, left, right, top, bottom, left_start_y, left_end_y,
right_start_y, right_end_y, top_start_x, top_end_x, bottom_start_x,
bottom_end_x,CARDINAL[12]/32

Comment 10 sudden6 2016-02-12 15:15:11 UTC

I can confirm this behaviour on a Thinkpad T440p with an external Monitor connected (1920x1080, VGA).
The panel sometimes overlaps fullscreen windows.

OS: openSUSE Leap 42.1
Kernel: 4.3.0
X.org: 1.17.2
Mesa: 11.0.8 with Intel Haswell

Comment 11 Bernie Innocenti 2016-02-21 21:27:22 UTC

Still present in plasma-workspace 5.5.4 (Fedora 23).

Comment 12 Alexander Mentyu 2018-03-05 12:45:14 UTC

Is it still the case?

Comment 13 Bernie Innocenti 2018-03-05 15:24:14 UTC

Still 100% reproducible on Fedora 27 with Plasma 5.12.2.
Easier way to repro:

1) Open any window and maximize to full-screen (I tried Thunderbird and Terminator)
2) Plug external monitor
3) Wait for kscreen to adjust the display
4) Note how the bottom of the window disappears behind the panel
5) Unplug monitor
6) Window shrinks again

Comment 14 Cruz Enrique 2020-04-17 21:45:02 UTC

Its continues to be 100% reproducible with plasma 5.18.4.1. Moreover, it is possible to "correct" the problem if you switch the primary screen back and for.

Comment 15 Cruz Enrique 2020-04-17 21:51:13 UTC

Now that I think about it, I think I can nail a bit more when it happens. 

It only happens when the attached screen is configured to NOT be the primary screen and IS bigger that the primary one. In my case, when you plug the FullHD TV to my laptop. Nevertheless, the bug does not shows when I plug my work screen (that is configures as a primary) or when I plug a beamer (that are typlically smaller in resolution than the laptop screen).

Comment 16 cmouzaoui 2020-09-08 16:52:56 UTC

Hello, this bug is also reproducible in Arch Linux (kernel 5.8.6-arch1-1) on Plasma version 5.19.5

Comment 17 Nate Graham 2024-08-28 19:23:34 UTC

This is fixed with various changes in Plasma 6.2, at least on Wayland. On X11 it's not easily fixable and a fix should not be expected anytime soon, if ever.