This has been reported separately here: https://discourse.mozilla.org/t /webgl-context-errors-in-firefox-83/70924 (although for different HW configurations).
Are you running firefox with apparmor confinement? (check the output of `sudo apparmor_status`). Can you open about:support and share the content of that page here? ** Bug watch added: Mozilla Bugzilla #1678652 https://bugzilla.mozilla.org/show_bug.cgi?id=1678652 ** Also affects: firefox via https://bugzilla.mozilla.org/show_bug.cgi?id=1678652 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1905054 Title: Firefox 83 Breaks WebGL Status in Mozilla Firefox: Unknown Status in firefox package in Ubuntu: Confirmed Bug description: Upon upgrading from Firefox 82 to to Firefox 83, WebGL stops working. Ubuntu 20.10 with Wayland. When I try to launch a webGL game: Failed to create WebGL context: failIfMajorPerformanceCaveat: Compositor is not hardware-accelerated. Specifically Pixi says: Error: WebGL unsupported in this browser, use "pixi.js-legacy" for fallback canvas2d support. Downgrading to Firefox 82 works. Not sure if this is an Ubuntu build issue or Firefox, so I also filed upstream as well: https://bugzilla.mozilla.org/show_bug.cgi?id=1678652 I need this functionality for work, and pinning to version 82 will be problematic in the long-term. To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1905054/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

