Quote Originally Posted by Death Knight View Post
Do you sure if force-enable not required?
Layers acceleration is not enabled on any graphics card on linux, because of the glitches you noticed. That's likely bugs with Firefox and not the graphics drivers.

XRender is always on, and used automatically through Cairo.

WebGL is the feature that gets turned on/off depending on your driver.

For FF6+,

Free Mesa-based drivers are whitelisted if the Mesa version is at least 7.10 and the driver is not Gallium-based. See the discussion in bug 645407. Regarding Gallium, see bug 624935.
For example, the free Intel driver that ships in Ubuntu 11.04 is whitelisted.
For the NVIDIA driver, versions 257.21 and newer are whitelisted, exactly like on Windows (see above).
For the FGLRX (proprietary ATI) driver, we whitelist the newer versions that implement OpenGL 3.0 or newer. Indeed, FGLRX does not return any version number of its own, so we had to use the OpenGL version as a differentiator.
See https://wiki.mozilla.org/Blocklistin...aphics_Drivers