Firefox fails to start

[Lazaro Morales]

After installing Firefox from the ppa I tried to run it and nothing happened. I tried to run it from the terminal and that’s when I saw that it hangs after showing this:

ATTENTION: default value for option mesa_glthread overriden by environment.
MESA: error: Failed to query drm service.
libGL error: glx: failed to create dri3 screen
libGL error: failed to load driver iris

Any ideas?

[Lazaro Morales (lazarom)]

It worked when I ran it like this:

$ LIBGL_ALWAYS_INDIRECT=1 firefox

and it worked fine afterwards. Not sure what was the cause but I think we can close this ticket

[Daniel Tang (daniel-z-tg)]

Try `sudo aa-teardown` to disable Apparmor, then relaunch Firefox.

LIBGL_ALWAYS_INDIRECT=1 causes WebGL aquarium to run at 12 FPS and high CPU for me instead of 60 FPS.

Also see my https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2018439

[Lazaro Morales (lazarom)]

Thanks Daniel, I didn't know it would have that impact. Thanks for letting me know.