[arch-general] Firefox "stalling" behaviour

[Miguel Aguiar]

>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