On Wed, 19 Feb 2014 10:55:10 +0100 "Stefan G. Weichinger" <li...@xunil.at> wrote:
> Other windows like terminals or browsers (chrome, opera) are not > affected ... but in thunderbird I get flickering message windows which > is rather annoying. > > Sorry, I don't know how to describe it in a better way. Does anyone > have an idea? Some mozilla-specific problem ;-) ? Try setting layers.acceleration.disabled to true in about:config. (I'm sorry I don't remember how to get to about:config in Thunderbird; I think there's a button somewhere.) In case layers.acceleration.force-enabled is set to true (it shouldn't be), toggle it to false. I think these settings require a restart of the application to take effect.
