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Firefox 76.0.1 (64 bit) freezes on MacOS Catalina 10.15.4 freezes

Hi, I've just installed MacOS Catalina 10.15.4 and as soon as I ran Firefox i noticed that after a few minutes (variable) it hangs when attempting to populate a new tab… (read more)

Hi, I've just installed MacOS Catalina 10.15.4 and as soon as I ran Firefox i noticed that after a few minutes (variable) it hangs when attempting to populate a new tab (with anything). All other existing tabs are then blank (white screen with spinning grey wheel in the centre). Firefox worked fine on MacOS Mojave prior to the upgrade.

When this happens I can do nothing. If i press command-option-esc to show (and cancel) processes it shows 'Firefox (not responding)'. Firefox can be force quited and will be removed from the display but when I tap on the Firefox icon to restart it just bounces up and down and never starts. I am forced to attempt a shutdown of MacOS but when I issue a 'Shutdown' macOS never shuts down going to the desktop screen and having a spinning wheel. I am forced to press and hold the power button on my iMac (2.7 Ghz Quad-Core Intel Core i5, 8GB 1600 Mhz memory.... I know it's old but it conforms to the spec required for Catalina) to force a shutdown.

If I leave Firefox running unattended for a length of time (say an hour) I come back and find it locked up with the same behaviour.

Safari does not show any of these behaviours and works fine (but I want to continue using FF).

I have... 1) Re-downloaded Firefox and re-installed. Same behaviour 2) Run in safe mode. Same behaviour 3) Attempted to run with individual addons. Same behaviour 4) Created a new 'places' database. Same behaviour. 5) Hardware acceleration is not enabled in 'about:preferences'. 6) Turned off 'Use Recommended Performance settings'. Same behaviour. 7) Not changed the process limit (set to 8 (default)). 8) Checked for duplicated session restore files in the profile folder. There are none (no sessionstore-x.js1 files). 9) I am not using an Automated Proxy Configuration URL (the dialog is set to 'Auto-detect proxy setting for this network. Nothing else is set). 9) Checked on the Activity Monitor for named Firefox processes at the restart attempt. None present but FF still won't start. 10) Searched the web and found a few instances of (in Catalina Beta5) FF crashing on startup.

'about:crashes' shows no dumps produced so i don't have one to upload.

Seen similar?

Thanks for the help, Larry

Asked by larry.h.heath 22 hours ago

Firefox home page, topsites shows thumbnail for wrong site

My firefox homepage/topsites seems to update thumbnails with image of different top site at times. How can I refresh or tell it to regenerate? I've attached a screenshot … (read more)

My firefox homepage/topsites seems to update thumbnails with image of different top site at times. How can I refresh or tell it to regenerate? I've attached a screenshot showing how the wrong thumbnail is now being used for nytimes and cnn.

I've searched for help and come across a few old bugs but nothing that fixes issue. Ideally I'd like to click on the image and have it refresh thumbnail from the (correct) site.

Thanks

Asked by john.nowlan 5 hours ago

Firefox 52.8.1 takes up a lot of RAM and CPU usage with Win 7

I have an old Win 7 laptop with very limited specs. I decided to use this version of FF (52.8.1) because I've used it before with no problems on an even older laptop with… (read more)

I have an old Win 7 laptop with very limited specs. I decided to use this version of FF (52.8.1) because I've used it before with no problems on an even older laptop with Win XP. However, the experience is not pleasant to say the least.

I'm attaching here some screenshots so we can see exactly what's going on. First image: 2 tabs, Yahoo mail, calendar = 1 GB of memory, 59% of CPU. Second image: 3 tabs, Yahoo mail, calendar, FB = 1.5 GB of memory, 55% of CPU. Third image: 1 tab, blank, after closing the other tabs = 725 MB of memory, 52% of CPU(!)

At this stage, the very latest version of Chrome is actually less resource-heavy than this version of FF.

I went ahead and did an experiment: exact same 6 tabs in Regular Mode vs. Safe Mode with add-ons disabled. Fourth image: regular mode, 700 MB of memory. Fifth image: safe mode, 420 MB of memory. So, with all add-ons disabled, I save about 300 MB of memory, which is rather substantial (as a percentage) but not dramatic.

I have "hardware acceleration" already disabled. Zero themes. My add-ons are very basic, an ad blocker, a translator, two pdf savers, a couple of video downloaders, and a cash back shopping button.

Btw, I tried the "minimize memory usage" and it freed up only 150 MB, so almost useless.

I realize this is a recurring issue with FF and that many people report usage over 4-5 GB of memory. But you can see I don't have that much RAM, plus I thought this older version would be "efficient" with Win 7.

Thank you for any suggestions!

Asked by elzach 3 hours ago