Bug 45697 - Black screen when presenting
Summary: Black screen when presenting
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
(earliest affected)
3.5.0 release
Hardware: Other Linux (All)
: medium major
Assignee: Not Assigned
Depends on:
Reported: 2012-02-06 05:17 UTC by mal
Modified: 2012-04-15 03:55 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:

LO version (58.19 KB, image/png)
2012-04-04 01:28 UTC, mal
After presentation (1.05 MB, image/png)
2012-04-04 01:29 UTC, mal

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Description mal 2012-02-06 05:17:56 UTC
openSuSe 12.1
Nvidia blob
2 screens

Create a presentation
Use set up slide show
Put the presentation on the 2nd screen
Check Navigator visible
Press F5

Presentation doesn't appear on 2nd screen
Primary screen goes completely black

Ctrl Alt BS twice to exit
Comment 1 Cor Nouws 2012-02-09 03:13:11 UTC
Not reproducable for me with Gnome on Ubuntu
Comment 2 mal 2012-02-09 04:27:35 UTC
Does it 100% of the time on my setup 


Comment 3 Cor Nouws 2012-02-09 04:39:18 UTC
Hi Mal,

(In reply to comment #2)
> Does it 100% of the time on my setup 

Any change that you ask others (users list? ) for their experience, eg with KDE <> Gnome ?
Comment 4 mal 2012-02-09 04:58:13 UTC
Had a little play. 

We don't normally use Gnome ( which is basically why we use openSUSE )

Anyway with Gnome it doesn't go black it just works as per bug 34531
( see comment 16 )

Also ...off topic .. how do you stop the primary screen getting the
navigator screen it alway appears whatever

Comment 5 Cor Nouws 2012-02-09 05:17:27 UTC
(In reply to comment #4)

> Also ...off topic .. how do you stop the primary screen getting the
> navigator screen it alway appears whatever

Was a different issue? Choosing Display1 or Display 2 does make a difference here.
Comment 6 Cor Nouws 2012-02-09 05:19:05 UTC
Could you try to collect more expreinces (users@global.libreoffice.org e.g) ?
Comment 7 Cor Nouws 2012-02-09 05:47:15 UTC
(In reply to comment #6)
> Could you try to collect more expreinces (users@global.libreoffice.org e.g) ?

had short talk with a deve on IRC - and mailed to users@ myself.
Comment 8 mal 2012-02-09 06:10:09 UTC
This might all be related to having SmartBoard software on the machine
Whilst this isn't your average setup it's very common in schools.

Even on Windows XP when you have a piece of software that tries to
do clever things with the screen ( Like Sibelius ) it causes
Smartboard to have problems as they all seem to fight about 
who owns the display

Bug 34531 is the more interesting one as that bug is a show stopper.
This is just a pain as it only seems to effect KDE. I hate Gnome
but it works. Personally I would rather see resources fixing 34531
first and then come back to this if it came to it
Comment 9 sasha.libreoffice 2012-04-03 05:21:01 UTC
@ mal
Thanks for bugreport
Please, change Tools->Options->LibreOffice->View->field "Use Hardware acceleration" and tell, if bug still remains
Comment 10 mal 2012-04-03 08:01:38 UTC
I checked quickly and this doesn't seem to happen anymore however 
bug 34531 does ( which is nasty )

I will experiment further and get back to you  - If there is 
anything you want me to try just let me know

best wihes

Comment 11 mal 2012-04-04 01:28:50 UTC
Created attachment 59463 [details]
LO version
Comment 12 mal 2012-04-04 01:29:13 UTC
Created attachment 59464 [details]
After presentation
Comment 13 mal 2012-04-04 01:36:24 UTC
The bug as originally described doesn't happen now
I have updated my openSuse 12.1 and used the LO
as per attachment. So I guess you can close this one.

However ...

The other attachment is what happens now after you
end a presentation with hardware acceleration ON

With it off everything seems fine. ( other than 
bug 34531 still exists - which I don't know if
it's related ) 

best wishes

Comment 14 sasha.libreoffice 2012-04-04 02:03:33 UTC
Thanks for additional testing
Due to last comment, changing status to WorksForMe

If problem will appear again, please, change status to Reopened
(or create another because people usually dislike to read long bugreports)
Comment 15 Cor Nouws 2012-04-15 03:55:52 UTC
& close