https://bugs.documentfoundation.org/show_bug.cgi?id=58358
--- Comment #59 from Renato Miró <[email protected]> ---
I'm sorry it didn't work for you, John. In my case, I did some tests and
verified that other Xorg options (ShadowFB off, BackingStore off, Silkenmouse
off) didn't help -- while NoAccel effectively prevented problems in Libreoffice
and in other situations, both when using Xfce and KDE4 (on Mageia 5).
Perhaps this is a complex bug which results from problems both in the X11
drivers and Libreoffice's inability to deal with these driver problems.
BTW, what hardware & driver combination are you using (please describe the
machines on which the bug occurs).
If you're using an Nvidia card, have you tried Nouveau? Have you tried the VESA
or fbdev driver (if any of these works in your hardware)
It's also worth noting that maybe, in spite of symptoms being similar,
solutions might not be the same on different hardware. I'm attaching an image
of the bug happening over here with anti-aliasing turned off, which apparently
would prevent the bug on your hardware.
To test a big document, I used "WG42-WriterGuideLO.odt", available online with
480+ pages and ~14MB. With option NoAccel, no problem happened over here.
I don't know much, really, but these problems are usually associated with bad
screen handling: either two things are writing to the video memory, a buffer is
updated with the wrong content, the screen is refreshed from the buffer and
partially overwrites what Libreoffice has already written, or Libreoffice
writes to the wrong buffer, or maybe there's even a speed problem. In my case
using acceleration seemingly causes that sort of mistakes in screen updating.
Maybe if we knew details about your hardware (particularly the video card brand
and model), we could search for similar problems on that hardware.
Good luck!
PS: If you really have to live without font anti-aliasing, try to use a big
resolution. At 1920x1080 I feel less need to use sub-pixel rendering.
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