display

users
#1

Good night = morning from Japan
I believe I did ask the same question in the past related to an
installation on a Win XP machine:
moving through documents (Writer) in LibreOffice while editing sometimes
(constantly!) sort of blurrs/freezes the screen.
That means, characters/lines/text sections "disappear", look like
smeared ink or are displayer overlapping.
The "problem" is solved, by switching to another Writer document and back.
That's fine, but still rather stupid and happens ONLY with Writer (not
yet noticed in Calc).

Computer: just bought a new one, running Windows 8.1 (= a nightmare!!!),
8 GB RAM, 120 GB SSD = OS + 1 TB HDD
and probably a whole lot of fancy high-tech stuff I not capable of
understanding.

So, I would LOVE to believe, that there cannot be any sort of
"insufficient power".

IS there a trick to convince the display to work smoothly???
Thank you.
Thomas

#2

Hi :slight_smile:
Maybe increase the memory settings in LibreOffice? The defaults tend to be
extremely low and on such a high-spec machine you can whack them right up.

Tools - Options - Memory

It sounds a bit like rendering issues so maybe the drivers for the
graphics-'card' are not quite right. I'm very much not sure about any of
that though!
Regards from
Tom :slight_smile:

#3

Thank you.
Just increasing the memory (from 50 MB to 200 MB for LO) did not work, but while playing around in "options", I found "View" -> "Use hardware acceleration".
For now, that seems to improve things ...

Graphics card, its driver etc. are things that have been put there by the manufacturer 2 weeks ago and I did not touch those.
Here too I would like to think, that THEY know a lot better than I do ...

#4

Hi,

I must say I have a similar behavior on my linux machine which has a similar
configuratio as of Thomas (a part from the SSD and windows 8.1). My graphic
card is the hybrid one (NVIDIA GT-630M), processor an i7 and 8 GB RAM and 1 TB
HD. I boosted my libre office (4.4.2) up to 250 MB, and 50 MB per document)
and sometimes even with only one document text tearing happens. I must confess
I haven't payed attention a) if the overall system memory was quite low or b)
if the limit of the allocated memory usage or the per document memory reached
their limit.

I'll keep an eye on them to see if such behavior is consistent with low
memory.

Ralf

#5

Hi :slight_smile:
I'm never convinced that the settings on a new machine are perfect but i
agree it is a good idea to stick with them until there is convincing enough
reason to try something else. Since there was no barrage of people
applauding that part of my idea it's not exactly convincing enough!! The
memory part sounds plausible though and is fairly easy to change and get
back to approximately default if it doesn't seem to do anything.

That hardware acceleration sounds exactly perfect! Well found! I hope
Firefox has something similar because that's where i get the same sort of
issue on this machine.

Regards from
Tom :slight_smile:

#6

Hi Tom,

I've never noticed it with Firefox on linux, but I'll keep an eye on it.

Ralf

#7

Hi :slight_smile:
Just a quick google search gave me a couple results to try out and a forum
to post questions in.

https://support.mozilla.org/en-US/questions/1013828
http://lifehacker.com/disable-firefoxs-hardware-acceleration-to-fix-slowness-749344037

But i've not tried them yet and my machine is behaving remarkably well
today anyway so the result might not be immediately obvious.
Thanks and regards from
Tom :slight_smile:

#8

Screen tearing issue with NVidia may be resolved by changing Vertical Sync to Adaptive.

Start video at URL below at 40 seconds.

https://www.youtube.com/watch?v=mFRpnQ09_LA

The video is from 2013 and may not quite match, but you get the idea.

Hope this helps.

#9

Am I correct assuming, that this applies ONLY to NVidia graphic cards?
My computer has an "Intel HD Graphics 4600" and I cannot find anywhere a setting called "vertical sync"
Thomas

#10

Try here: http://www.intel.com/support/graphics/sb/CS-034107.htm

#11

​Thomas, this is a tad off-topic, but since you mentioned that «Windows 8.1​

​(= a nightmare !!!)»​, I thought I'd suggest two simple steps to tame the
beast :

   1. Install Classic Shell from *classicshell.net
   <http://classicshell.net>* (elect the Windows 7 interface and change the
   start button), and
   2. Deactivate the superfluous Lockscreen by following the steps found
   here :
   *http://www.howtogeek.com/134620/how-to-disable-the-lock-screen-on-windows-8-without-using-group-policy*
   <http://www.howtogeek.com/134620/how-to-disable-the-lock-screen-on-windows-8-without-using-group-policy>
   */*

While not, alas, quite as good as dumping Windows altogether and
installing, e g, Linux Mint 17.1 instead, it should suffice to turn those
nightmares into relatively sweet dreams. I know it has for many retirees
here in Stockholm whom we help with computer problems....

Henri

#12

Thank you!
Actually, I am trying already for more than 7 years to "get friendly" with Linux and by now can install the OS.
Every further step results in trouble ...

#13

Thank you.
That link helped me to understand the situation better AND how to get to the setting of my graphics card.

However, changing the settings related to "vertical sync", I believe I can choose between TWO, does NOT help.
The screen tearing still happens as before.

Now I have all that "super power" all over the place and still constantly have to switch between two LO documents (could not yet find the shortcut key for minimizing the window)
to be able to have a look at my text.

Is there anything else I could try?
Thomas

#14

See: https://downloadcenter.intel.com/search?keyword=2nd+Generation+Intel®+Core™+Processors+with+Intel®+HD+Graphics+3000%2F2000 for current driver.

Also "Difficulties starting LibreOffice (e.g. applications hang) as well as problems with the screen display are often caused by the graphics card driver. If these problems occur, please update your graphics card driver or try using the graphics driver delivered with your operating system. Difficulties displaying 3D objects can often be solved by deactivating the option "Use OpenGL" under 'Tools - Options - LibreOffice - View - 3D view'."

But watch out for: http://ask.libreoffice.org/en/answers/46802/revisions/

While it may not necessarily be a 3D problem, graphics, as in display, may be tied together.

Hope this helps.

#15

Good evening from Japan
I do not want to be annoying, but ...
This "screen tearing" (or however it is called) happened (past tense) / happens ONLY with Writer.
It did so on ALL computers (using both Windows and Linux) on which I have been using LibreOffice in the past.

It DOES NOT happen in Calc!
Neither does this happen with any other software.

Therefore, the theory about graphic driver, settings etc. somehow is not completely convincing.
(Somehow I assume, that the new computer has the newest graphic driver installed.)
Accordingly, I still would like to believe, that there must be a "Writer-specific" setting somewhere ....

Probably missing the "point" altogether
Thomas

#16

Last chance resolution

Have you tried changing your Windows setting to a higher or lower resolution to see if tearing still occurs.

Please report bug with explanation of computer manufacturer and model, Intel processor and graphics chip(s), LibreOffice version, resolution settings in which error occurs.

Also, does your computer have a shared graphics engine, say between Intel and nVidia.

If so, check nVidia settings also.

Sorry could not help more, but it appears you have arrived at the point of hardware/software issue unique to your model of computer.

Anyone else having this problem, please confirm bug Thomas generates.

Totally understand your frustration.