[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Marco Martin via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

Marco Martin  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|UNCONFIRMED |RESOLVED

--- Comment #17 from Marco Martin  ---
after the last fixes i can't reproduce anymore.
multiscreen management of plasmashell changed in 5.8, please reopen if the same
problem happens in Plasma 5.8 or newer

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Nicolas Dietrich via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

Nicolas Dietrich  changed:

   What|Removed |Added

 CC||n...@mailbox.org

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Piotr Dobrogost via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

Piotr Dobrogost  changed:

   What|Removed |Added

 CC||p...@bugs.kde.dobrogost.net

--- Comment #16 from Piotr Dobrogost  ---
I think this could be marked as a duplicate of bug #356225 which has more
information and is already confirmed.

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[S . Bryant via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

--- Comment #15 from S. Bryant  ---
I'm using Plasma 5.7 on OpenSUSE 42.1, and the problem is very much still
there.

The behaviour is now worse than it was before: unplugging the external screen
leaves me without any visible panels.  Plugging it back in puts one panel on
top of the other.

It is also apparent that panels really don't like to be moved from one screen
to another.  They hang on the screen edge and try to not go any further.

The machine (a laptop) has hybrid Intel/Nvidia graphics, in case that makes any
difference; it has Bumblebee setup.

Running "xrandr -q" gives sane information about the currently connected
screens.  The information is updated when the external screen is plugged in or
unplugged.

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Marco Martin via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

--- Comment #14 from Marco Martin  ---
I can confirm, lastscreen of one paned effectively goes from 0 to 1, causing
the configuration of the screen to be actually lost.

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[soee via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

--- Comment #12 from soee  ---
Created attachment 100035
  --> https://bugs.kde.org/attachment.cgi?id=100035=edit
WORKING plasma-org.kde.plasma.desktop-appletsrc

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[soee via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

--- Comment #13 from soee  ---
Created attachment 100036
  --> https://bugs.kde.org/attachment.cgi?id=100036=edit
PANEL MOVED plasma-org.kde.plasma.desktop-appletsrc

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[soee via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

soee  changed:

   What|Removed |Added

 CC||kont...@soee.pl

--- Comment #11 from soee  ---
This problem exists sometimes after system reboot - panel from my laptop screen
jumps to connected screen and covers the one that exists there. 

I was asked to post 'working' plasma-org.kde.plasma.desktop-appletsrc file
content and after panel jumps/is moved to wrong screen. So check the attached
files for them.

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Rick Beldin via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

Rick Beldin  changed:

   What|Removed |Added

 CC||rick.bel...@gmail.com

--- Comment #10 from Rick Beldin  ---
I can confirm this behavior on Kubuntu 16.04.  It is present in the latest
backports ppa:

http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu xenial main

Plasma versions as of 5/24/2016 

dpkg -l | grep plasma | awk '/ii/ {print $2, $3}' | grep desk
plasma-desktop 4:5.6.4-0ubuntu1~ubuntu16.04~ppa3
plasma-desktop-data 4:5.6.4-0ubuntu1~ubuntu16.04~ppa3
plasma-desktop-dbg 4:5.6.4-0ubuntu1~ubuntu16.04~ppa3
plasma-look-and-feel-org-kde-breezedark-desktop
4:5.6.4-0ubuntu1~ubuntu16.04~ppa1

Typically happens when suspending either docked or undocked and resuming in an
'opposite' state.  Ie;  suspend while docked and resume undocked or vice versa. 

Symptoms: 
panels may appear on wrong screens
panels may appear all on one screen
menus may appear on the wrong screen

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Christian Speckner via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

Christian Speckner  changed:

   What|Removed |Added

 CC||cnspe...@googlemail.com

--- Comment #9 from Christian Speckner  ---
I can confirm this on gentoo / plasma 5.5.5. I work on a laptop that I connect
to an external monitor in the office. On connecting the external monitor, the
panel occassionally movedsto the external screen. On disconnecting, it
sometimes moves back to the laptop screen. I can't see any pattern in the
behavior, it appears random.

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[S . Bryant via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

S. Bryant  changed:

   What|Removed |Added

 CC||st...@bawue.de

--- Comment #8 from S. Bryant  ---
I'm using Plasma 5.6.2 on OpenSUSE Leap, and the problem is very much still
there.

When I connect my external screen to the laptop, the panel from the laptop
screen may get moved to the external screen (or moved back if it was on the
external screen).  The panel on the external screen doesn't get moved.

Connecting/disconnecting the external screen prior to X starting results in the
same behaviour as doing so after logging in.

Moving a panel to a specific display/position seemed to help for the remainder
of that session, but the behavour reverted at the next login.

Disconnecting the external screen leaves the panels where they are.  While this
bug's problem description could be counted as solved, the underlying issue is
not.

This problem was never correctly addressed in the previous generation of the
software, as there are two opposing use cases:
1. having a panel that always remain visible, and automatically changes screen
to do so (and returns to the user's preferred screen when it becomes available
again).  This is probably what a user expects when a single panel is in use;
Windows also works like this.
2. having panels tied to specific screens, and being unreachable if that
particular screen is not connected.

My recommendations:
On screen disconnect, there should be a check that at least one panel remains
visible - if not, the first panel should be moved (but the lastScreen setting
should not be altered).
On screen connect, each panel should be moved to its 'lastScreen' if there is
no panel already at that position on that screen.
The lastScreen setting should only be updated when a panel is created or when
the user explicitly moves the panel to a different screen.  (Not sure if this
is currently the case.)

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[plasmashell] [Bug 344076] Panels appear on top of each other when switching back to single-monitor

[Jannik Jochem via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=344076

Jannik Jochem  changed:

   What|Removed |Added

 CC||jan...@jannik.de

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