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Firefox and Hardware Acceleration on Linux

Submitted by Roy Schestowitz on Saturday 25th of September 2021 07:14:21 PM Filed under
GNU
Linux
Moz/FF

In some Firefox version after 88.0 it looks like they're enabling WebRenderer by default, and it also looks like my hardware (an Nvidia graphics card with the proprietary driver)[1] isn't whitelisted, so what Firefox does is enable "software WebRenderer" instead.

First things first, I had been trying WebRenderer for some time (more than a couple of month) by force-enabling it, and while it seemed to make things better at first, on the whole the experience was awful, and because WebRenderer, if I understand correctly, uses GPU acceleration, that affected the rest of the desktop, so after a while I disabled WebRenderer (and "Hardware Acceleration" in the preferences tab, and set the processes limit to 2, while I was there), and then things seemed to be better.

Due to the iffy state Firefox can be in sometimes, I had decided to skip updates for as long as I can, i.e. I update Firefox, then stick with the version I have until an extension I use no longer works, or there is a really compelling new feature in a new version of Firefox (which, sadly, doesn't seem to be as often as it was before the "rapid release" schedule Mozilla had adapted...). So here I was using Firefox 88.0, shut the machine down at night, turned it on in the morning, then when I was opening a link, Firefox started and all the tabs had the "your tab crashed" "reload this tab?" message, clicking that button had no effect.

So nothing worked, not restoring the previous tabs, disabling all extensions, moving ~/.mozilla and starting anew; a couple of online searches later, still nothing, then I looked at rpm -qa --last | less, now I think the reason is a glibc update, which broke Firefox, probably it would be fixed by rebuilding Firefox against the new glibc. Not really OpenSuse Tumbleweed's problem because the current version of Firefox in the repos is 92.0...

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