Firefox and Chrome are constantly crashing, even with all extensions removed. Everything is updated/upgraded on Ubuntu 20.04. It's been this way for months. Rebooting seems to stabilize the browsers for a little while, like 5-10 minutes, before they start crashing again. Firefox is more stable with only one tab open. Chrome crashes constantly with only one tab open. Moving the mouse around seems to trigger crashes a lot.

Today I checked "use recommended performance settings" and left hardware acceleration unchecked in Firefox settings. I will see if this makes any difference. Till now, neither box was checked.

I have two Nvidia M750 graphics cards.

$ free -m
             total        used        free      shared  buff/cache   available
Mem:          15977        1822       12219          56        1935       13775
Swap:          2047           0        2047
  • Probably won't make a difference, but have you tried chromium?
    – Ray
    Sep 14, 2021 at 4:30
  • Hi Ray, no. I'd love to try chromium, but not as a snap package. Sep 14, 2021 at 4:54
  • If two browsers are crashing frequently, this may be a sign of memory constraints. Can you update your question to include the output of free -m? This will show some details about your RAM and swap file configuration.
    – matigo
    Sep 14, 2021 at 5:08
  • what does your logs report happening before and during crashes? Sep 14, 2021 at 5:20
  • system logs show nothing. .mozilla logs show crash reports submitted but no content. So I have no idea what's causing the crashes. Sep 14, 2021 at 5:34

1 Answer 1


A somewhat helpful solution was in Firefox settings to choose "use recommended performance settings" and leave hardware acceleration unchecked. Then reboot.

Firefox is causing segmentation faults that made launching Chrome afterwards unstable. Both browsers are running better with a lot fewer crashes, but crashes are still happening, especially after waking from sleep.

I had posted this as the answer, but it's only a 75 percent helpful answer.

  • Firefox crashed worse and worse, so I finally removed it and installed Google Chrome. Chrome worked fine for a day and then started trying to get all my private info into cloud storage, so I reinstalled Firefox and then removed Google Chrome. Interestingly, Firefox is not crashing yet. I'm wondering if some kind of cache builds up with Firefox and then starts causing it to crash more and more. I wil have to experiment with deleting browser cache and other cache I can find when it starts crashing to see if this fixes the issue. Ray said deleting an old configuration periodically helped. Nov 1, 2021 at 16:08
  • What helps the most is to clear the cache when I start having problems, and then if I have to do that too frequently, uninstall and reinstall firefox. I have to try not to open other tabs if possible when watching videos. Otherwise, Firefox is stable enough usually for text websites unless they're crazy with video ads. Jan 3, 2022 at 7:46
  • I recently installed and ran BleachBit cleaning everything in Firefox except passwords and cookies. I cleaned everything in my no longer installed Chrome also. I also cleaned everything else except Deep Scan: VIM swap files and System: Memory and Free disk space. This is a wonderful tool! I've only had one Firefox crash in one week instead of countless crashes. Jan 11, 2022 at 4:24

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