[GEM-dev] Screen tear/flicker when going full screen

[Antonio Roberts]

> have you tried enabling the "sync to v-blank" (or similar) in the
> settings for your gfx-card?
> this will prevent updating of the framebuffer while it is being drawn.
Turns out I already had sync to v-blank enabled (through Compiz).

> I put the following lines in "/etc/environment" -
>
> CLUTTER_PAINT=disable-clipped-redraws:disable-culling
> CLUTTER_VBLANK=True
I tried a combination of those two solutions but still getting the same problem

On 26 May 2014 13:57, Marco Donnarumma <lists at marcodonnarumma.com> wrote:
> Hi Antonio,
>
> I had the same problem but with an Nvidia card on Mint 15 (ubuntu 13.10).
>
> Imho often times is not a software problem, but a firmware issue with the
> vertical blank and refresh rate.
>
> Does it happens with movies in full screen on an external monitor?
>
> So not sure this below will help you, but it fixed the issue on my machine:
>
> I put the following lines in "/etc/environment" -
>
> CLUTTER_PAINT=disable-clipped-redraws:disable-culling
> CLUTTER_VBLANK=True
>
> best,
> M
>
> --
> Marco Donnarumma
> Performer, body tinkerer, teacher and writer.
> #soundandmusic #biotech #freeculture
> EAVI - Goldsmiths, University of London
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Portfolio: http://marcodonnarumma.com
> Research: http://res.marcodonnarumma.com
>
>
> On Mon, May 26, 2014 at 12:56 PM, Antonio Roberts <antonio at hellocatfood.com>
> wrote:
>>
>> Hi,
>>
>> I'm running Pd Extended 0.43.4 on Ubuntu 14.04. I've got a Dell XPS13
>> with Intel Ivybridge Mobile i7 graphics and I'm getting lots of screen
>> tear/flicker when I go full screen with an external monitor attached.
>> It doesn't matter if I'm full screen on the external or primary
>> monitor, I still get lots of flicker.
>>
>> Attached is an example patch that causes this problem (contains
>> flashing colours)
>>
>> I've noticed that if I don't go full screen (deleting border 0) then
>> the flicker stops, but I then have the window borders and menu bar
>> being displayed.
>>
>> Is this a problem with GEM?
>>
>> --
>> ============================
>> antonio at hellocatfood.com
>> http://www.hellocatfood.com
>> ============================
>>
>> _______________________________________________
>> GEM-dev mailing list
>> GEM-dev at lists.iem.at
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>>
>



-- 
============================
antonio at hellocatfood.com
http://www.hellocatfood.com
============================