I'm seeing a strange behavior where it "stalls" intermittently. The rendering engine seems to randomly pause activity (i.e. not responsive to scrolling input), and these pauses can last for several seconds. It also appears to affect video playback.

I had the same problem on my laptop with an integrated Intel graphics card, I believe the issue started around the time of the 5.2 kernel release. There were a couple of threads on www.reddit.com/r/archlinux where people reported similar bugs. Some of the tweaks mentioned in the wiki page on Intel graphics (https://wiki.archlinux.org/index.php/Intel_graphics#Troubleshooting) appear to be relevant, but I was not able to fix the problem on Xorg, and after waiting for a few kernel and firefox updates I ended up switching browsers. For the past month or so I've been trying Wayland out, I've been back on firefox since then and haven't experienced any graphics issues whatsoever. Cheers, Miguel

All, I tried all the suggestions provided, and the behavior has stopped. I have also logged back into my Mozilla account and that hasn't yet caused a recurrence. I guess either the TearFree and/or the .drirc setting have done the trick. Thanks for the excellent suggestions given my terrible level of detail! No hardware info, no nothing for you to go by... Paul On Mon, Dec 9, 2019 at 3:42 PM Paul Hart wrote:

Hi,

I'd really like to use the Firefox browser (currently using Iridium), but I'm seeing a strange behavior where it "stalls" intermittently. The rendering engine seems to randomly pause activity (i.e. not responsive to scrolling input), and these pauses can last for several seconds. It also appears to affect video playback.

I haven't knowingly done anything with my user settings that would cause this to happen; I have a few add-ons, but they should all be well-behaved (1PasswordX, Facebook Container, Multi-account Container, uBlock Origin).

Has anyone seen this and figured out a solution?

Thanks,

Paul