Bug 440063 - presentation mode is incompatible with video conferencing via Zoom, BigBlueButton, Webex, ...
Summary: presentation mode is incompatible with video conferencing via Zoom, BigBlueBu...
Status: RESOLVED FIXED
Alias: None
Product: okular
Classification: Applications
Component: general (show other bugs)
Version: 1.9.3
Platform: Ubuntu Linux
: NOR wishlist
Target Milestone: ---
Assignee: Okular developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-07-20 08:56 UTC by Wolfgang Ertel
Modified: 2022-07-26 10:45 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


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Description Wolfgang Ertel 2021-07-20 08:56:50 UTC
SUMMARy

when giving a presentation via one of the video conferencing tools, the presentation screen can not be selected for presentation. The reason probably is that the original screen still is open. 

Full screen mode, however, works with the video conferencing tools. Unfortunately here I can not draw on the slides with my graphics tablet.

STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 Yuri Chornoivan 2021-07-20 09:02:43 UTC
Works fine with MS Teams (full-screen presentations, drawing with tablet on slides) in Plasma. What window manager do you use (GNOME's mutter?)?

Thanks in advance for your answer.
Comment 2 Wolfgang Ertel 2021-07-20 09:12:34 UTC
I use KDE and Zoom, BigBlueButton or Webex for the video conference.

---------------------------------------------------------------------------
Prof. Dr. Wolfgang Ertel                 http://www.hs-weingarten.de/~ertel
Institut für Künstliche Intelligenz      http://iki.hs-weingarten.de
Hochschule Ravensburg-Weingarten         Email: ertel@hs-weingarten.de
Postfach 3022, D-88216 Weingarten        https://www.scientists4future.org
Tel: +49-751-501-9721 oder +49-751-501-9870    privat: +49-751-553814  
---------------------------------------------------------------------------

Am 20.07.21 um 11:02 schrieb Yuri Chornoivan:
> https://bugs.kde.org/show_bug.cgi?id=440063
>
> Yuri Chornoivan <yurchor@ukr.net> changed:
>
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |yurchor@ukr.net
>
> --- Comment #1 from Yuri Chornoivan <yurchor@ukr.net> ---
> Works fine with MS Teams (full-screen presentations, drawing with tablet on
> slides) in Plasma. What window manager do you use (GNOME's mutter?)?
>
> Thanks in advance for your answer.
>
Comment 3 Yuri Chornoivan 2021-07-20 12:51:39 UTC
Just tested the drawing on the slides in Zoom (5.4.9, Plasma 20.12, Mageia 8) with Zoom's "Annotate" feature in Okular's full-screen mode. It works as expected (Huion H430P tablet).

The Okular tools are inaccessible though due to the Zoom showing its control panel in the place where Okular's panel should be (top edge of the screen).
Comment 4 Albert Astals Cid 2021-07-20 21:05:54 UTC
Are you using Plasma Wayland or Plasma X11?
Comment 5 Wolfgang Ertel 2021-07-21 06:30:17 UTC
I am using KDE-Plasma-Version 5.18.5

---------------------------------------------------------------------------
Prof. Dr. Wolfgang Ertel                 http://www.hs-weingarten.de/~ertel
Institut für Künstliche Intelligenz      http://iki.hs-weingarten.de
Hochschule Ravensburg-Weingarten         Email: ertel@hs-weingarten.de
Postfach 3022, D-88216 Weingarten        https://www.scientists4future.org
Tel: +49-751-501-9721 oder +49-751-501-9870    privat: +49-751-553814  
---------------------------------------------------------------------------

Am 20.07.21 um 23:05 schrieb Albert Astals Cid:
> https://bugs.kde.org/show_bug.cgi?id=440063
>
> Albert Astals Cid <aacid@kde.org> changed:
>
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |aacid@kde.org
>
> --- Comment #4 from Albert Astals Cid <aacid@kde.org> ---
> Are you using Plasma Wayland or Plasma X11?
>
Comment 6 Laura David Hurka 2021-07-21 13:08:04 UTC
To check whether you use X11 or Wayland, you can open the “Info Center” (usually installed with Plasma, available in the app menu section “System”), and look for the line that starts with “Graphics Platform:”.

There is also a button “Copy to Clipboard”, which is intended that you can copy all the information and paste it here in the Bugzilla ticket. :)
Comment 7 Wolfgang Ertel 2021-07-21 14:52:37 UTC
I did this already. What I find there is:
> Operating System: Kubuntu 20.04
> KDE Plasma Version: 5.18.5
> KDE Frameworks Version: 5.68.0
> Qt Version: 5.12.8
> Kernel Version: 5.4.0-77-generic
> OS Type: 64-bit
> Processors: 4 × Intel® Core™ i5-6300U CPU @ 2.40GHz
> Memory: 7,6 GiB
when I move the mouse over "Grafische Informationen" a little window
appears showing:
> OpenGL
> Wayland
> X-Server

I hope that helps
W. Ertel

---------------------------------------------------------------------------
Prof. Dr. Wolfgang Ertel                 http://www.hs-weingarten.de/~ertel
Institut für Künstliche Intelligenz      http://iki.hs-weingarten.de
Hochschule Ravensburg-Weingarten         Email: ertel@hs-weingarten.de
Postfach 3022, D-88216 Weingarten        https://www.scientists4future.org
Tel: +49-751-501-9721 oder +49-751-501-9870    privat: +49-751-553814  
---------------------------------------------------------------------------

Am 21.07.21 um 15:08 schrieb David Hurka:
> https://bugs.kde.org/show_bug.cgi?id=440063
>
> David Hurka <david.hurka@mailbox.org> changed:
>
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>           Component|PDF backend                 |general
>
> --- Comment #6 from David Hurka <david.hurka@mailbox.org> ---
> To check whether you use X11 or Wayland, you can open the “Info Center”
> (usually installed with Plasma, available in the app menu section “System”),
> and look for the line that starts with “Graphics Platform:”.
>
> There is also a button “Copy to Clipboard”, which is intended that you can copy
> all the information and paste it here in the Bugzilla ticket. :)
>
Comment 8 Laura David Hurka 2021-07-21 22:18:20 UTC
Thanks. It still doesn’t say which of these ones you use, but on Kubuntu you would need to explicitely enable Wayland. Therefore, you probably use X11.

I linked a similar bug report.

Maybe you can try my idea for a workaround: Right-click the Okular presentation window’s item in the task manager / panel, and toggle the More Actions -> Fullscreen option.
Comment 9 Wolfgang Ertel 2021-07-22 14:54:00 UTC
If in the KDE control panel I right click on the Okular item there is no
option More Actions -> Fullscreen

---------------------------------------------------------------------------
Prof. Dr. Wolfgang Ertel                 http://www.hs-weingarten.de/~ertel
Institut für Künstliche Intelligenz      http://iki.hs-weingarten.de
Hochschule Ravensburg-Weingarten         Email: ertel@hs-weingarten.de
Postfach 3022, D-88216 Weingarten        https://www.scientists4future.org
Tel: +49-751-501-9721 oder +49-751-501-9870    privat: +49-751-553814  
---------------------------------------------------------------------------

Am 22.07.21 um 00:18 schrieb David Hurka:
> https://bugs.kde.org/show_bug.cgi?id=440063
>
> David Hurka <david.hurka@mailbox.org> changed:
>
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>            See Also|                            |https://bugs.kde.org/show_b
>                    |                            |ug.cgi?id=421206
>
> --- Comment #8 from David Hurka <david.hurka@mailbox.org> ---
> Thanks. It still doesn’t say which of these ones you use, but on Kubuntu you
> would need to explicitely enable Wayland. Therefore, you probably use X11.
>
> I linked a similar bug report.
>
> Maybe you can try my idea for a workaround: Right-click the Okular presentation
> window’s item in the task manager / panel, and toggle the More Actions ->
> Fullscreen option.
>
Comment 10 postix 2022-07-25 13:44:30 UTC
Since bug #421206 seems to have been fixed since 21.12+, can you please check if you can still reproduce it with some recent Okular version?
Comment 11 Wolfgang Ertel 2022-07-26 08:01:02 UTC
thank you very much for this bug fix. Presentation of Okular (1.9.3) in 
fullscreen mode with Bigbluebutton works now perfectly.

regards
Wolfgang Ertel

---------------------------------------------------------------------------
Prof. Dr. Wolfgang Ertel                 http://www.hs-weingarten.de/~ertel
Institut für Künstliche Intelligenz      http://iki.hs-weingarten.de
Hochschule Ravensburg-Weingarten         Email: ertel@hs-weingarten.de
Postfach 3022, D-88216 Weingarten        http://s4f-ravensburg.de
Tel: +49-751-501-9721                    Tel. privat: +49-751-553814
---------------------------------------------------------------------------

Am 25.07.22 um 15:44 schrieb postix:
> https://bugs.kde.org/show_bug.cgi?id=440063
>
> postix <postix@posteo.eu> changed:
>
>             What    |Removed                     |Added
> ----------------------------------------------------------------------------
>               Status|REPORTED                    |NEEDSINFO
>           Resolution|---                         |WAITINGFORINFO
>                   CC|                            |postix@posteo.eu
>
> --- Comment #10 from postix <postix@posteo.eu> ---
> Since bug #421206 seems to have been fixed since 21.12+, can you please check
> if you can still reproduce it with some recent Okular version?
>
Comment 12 postix 2022-07-26 10:45:31 UTC
Great to hear! :)