Currently, in about:support (Firefox 30) the "Graphics" section states the following:
Now, I know that Firefox has (for whatever reason) disabled the hardware accelerated features for Linux users. However, as stated in this site, it should be possible to force enable it. So far, I have:
- Set
layers.acceleration.force-enabled
andlayers.offmainthreadcomposition.enabled
to true. - Set the environment variable
MOZ_USE_OMTC=1
It doesn't work, and the hardware acceleration remains disabled. Is there another way to force-enable hardware acceleration (performance is horrible on my computer)? Or am I just doing it wrong?
Best Answer
I try this as a answer even if the question actually gave the answer to me. I had problems setting up the environment variable - because it actually went away as soon as i closed the console. It worked when I started Firefox on the same console I used the
export
command but nothing else. I tried setting it in bash and zsh. Then I found a solution and now what is described in the question works perfectly for me.about:support
looking for "GPU Accelerated Windows 1/1 OpenGL (OMTC)" under graphics. If this shows 1/1 you can stop right here, you not need this tweak. But if it shows 0/1 you can force it on ...about:config
in Firefox (url bar)layers.acceleration.force-enabled
andlayers.offmainthreadcomposition.enabled
to trueRun(Is no longer needed for up to date Firefox versions)sudo bash -c "echo export MOZ_USE_OMTC=1 >> /etc/X11/Xsession.d/90environment"
to set the enviorment variable globally for Xabout:support
for "GPU Accelerated Windows 1/1 ..."