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Firefox slow to render sites on Linux, Solaris and Mac.

The rendering issue is not seen with Chromium (Linux) or Safari (Mac). I have no alternative for Solaris :-( I have read the tips etc, reset everything, but there is no d… (read more)

The rendering issue is not seen with Chromium (Linux) or Safari (Mac). I have no alternative for Solaris :-(

I have read the tips etc, reset everything, but there is no difference.

This has been happening for a a couple of years, getting progressively worse, It has got so bad, I have stopped using FF on all but Solaris now. (and I have been using it for a long long time).

I need someone to direct me to what information/data is needed to be collected so someone can comment. Do you have any favourite page load test web sites that I can send out put to you from?

Asked by bdporter 2 days ago

Answered by jonzn4SUSE 2 days ago

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new lgbtq themes

[Locked as a duplicate of https://support.mozilla.org/en-US/questions/1293313. Please follow up there, thanks.] so i installed the transgender theme and now i cannot star… (read more)

[Locked as a duplicate of https://support.mozilla.org/en-US/questions/1293313. Please follow up there, thanks.]

so i installed the transgender theme and now i cannot start roblox and i even deleted the theme and set my old theme back and it still doesnt work, btw why does a fricking theme even break my whole browser

Asked by stiebizsolt0202 1 year ago

Last reply by stiebizsolt0202 1 year ago

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search in search bars impossible

Search bars do not activate. I have been unable to search by themes, words or phrases since this morning. Nothing has changed on my computer since yesterday. I'm with Mac… (read more)

Search bars do not activate. I have been unable to search by themes, words or phrases since this morning. Nothing has changed on my computer since yesterday. I'm with Mac, 10.11.6 system. What to do? Sorry for my English, I am French-speaking.

Asked by francinevernac 1 year ago

Answered by jscher2000 - Support Volunteer 1 year ago

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Firefox hang when "Firefox Home Content" are untiked - Not happening before

Hello, Since about 3 weeks, Firefox hang on certain websites while trying to load them, when un-ticking all "Firefox Home Content" items. When those things are ticked, e… (read more)

Hello,

Since about 3 weeks, Firefox hang on certain websites while trying to load them, when un-ticking all "Firefox Home Content" items. When those things are ticked, everything is fine. Wasn't happening before. Often a gray geared wheel appear and at other times only the "tab text" appear, please see the attached screen shot. I'm able to click on "File Edit View...", the items present on the bookmark toolbar, "Refresh", "Home" but the action is executed only when Firefox un-hang. I'd already get a look at Firefox help tutorials but there was nothing about "The "Firefox Home Content" can cause Firefox to hang".

It take me about 10 minutes to load this current page. "Firefox Home Content" are not ticked right now.

Thanks,

Guillaume

Asked by Guillaume Soucy 1 year ago

Answered by FredMcD 1 year ago

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Tabs constantly crashing.

Hello, I should start by saying that I'm a technophobe so I admit I'm not very good at explaining my problem or understanding how to deal with it. A couple of weeks ago m… (read more)

Hello, I should start by saying that I'm a technophobe so I admit I'm not very good at explaining my problem or understanding how to deal with it. A couple of weeks ago my tabs began crashing regularly. After researching online, I've refreshed Firefox, done a clean re-install, emptied the cache, disabled add-ons, tried safe mode and turned off hardware acceleration. None have made any difference. I'm up-to-date with Firefox and am using Windows 10. When I switch to Microsoft Edge I don't get any problems at all. I take this to mean that it's not a problem with my PC which has all the latest updates installed. I there anything else I can try? I'm not keen on Edge and would prefer to stick with Firefox. Incidentally, this tab has crashed twice whilst I was typing this message. Thank you.

Asked by rodney.clayton 1 year ago

Answered by rodney.clayton 1 year ago

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pictures ot shown

Hi, Since updating to the latest Firefox for MacOs (79.0-64bit), the pictures on this website: (https://www.marktplaats.nl/) do not load. I tried with Safari: no problem.… (read more)

Hi,

Since updating to the latest Firefox for MacOs (79.0-64bit), the pictures on this website: (https://www.marktplaats.nl/) do not load.

I tried with Safari: no problem.

What's going on?

Dennis

Asked by daringeling 1 year ago

Answered by FredMcD 1 year ago

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The stats page on Wordpress blog does not display histograms after most recent update

I have most recent release of Firefox and also just updated MacOS to 11.5.2. After updates the histograms on the Wordpress blog stats page do not display. They display fi… (read more)

I have most recent release of Firefox and also just updated MacOS to 11.5.2. After updates the histograms on the Wordpress blog stats page do not display. They display fine on Opera. I did clear cache — that didn't help. I quit Firefox and restarted — that didn't help. Firefox version for Mac version 91.0.1 (64-bit).

I assume this must be a Firefox bug, but am open to suggestions on how to fix the problem.

Also, when I click the checkbox for "Email me when someone answers the thread" it will not accept the check. Irritating.

Asked by mikehamca 10 months ago

Answered by cor-el 10 months ago

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Firefox 93 Way Too Slow!

Got the "new & improved" version 93, and it doesn't seem so improved. I can barely write this, as it keeps stopping and starting, and acts like we're underwater! It's… (read more)

Got the "new & improved" version 93, and it doesn't seem so improved. I can barely write this, as it keeps stopping and starting, and acts like we're underwater! It's using about 15GBs of RAM, and while I still have plenty on-hand, it's barely functioning! Come one, what's going on, will this browser ever just work?

Asked by StevenCee 8 months ago

Last reply by Paul 8 months ago

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Firefox is very laggy with many (discarded) tabs and huge sessionstore.jsonlz4

Problem: Firefox glitches a lot if the total number of all tabs exceeds 4129, and the sessionstore.jsonlz4 file in the profile has a large size. Details: Some interface e… (read more)

Problem: Firefox glitches a lot if the total number of all tabs exceeds 4129, and the sessionstore.jsonlz4 file in the profile has a large size.

Details: Some interface elements stop displaying normally after some time after opening 4130 tab, 4131 tab or more - popup menus, extension menus, Firefox menus, contextual menus, hovering popup windows, etc. They're either not displayed at all or partially displayed. The problem is purely visual - these elements are present and can be clicked on with the mouse, they just aren't displayed correctly. The more tabs open after 4129, the faster and harder the Firefox lags. When I quickly open more than 50 tabs after 4129, the browser usually stops displaying anything and completely freezes. The problem also appears some time after restarting the browser. Closing all tabs above the limit of 4129 completely solves the problem.

What have I done to solve the problem and what isn't working:

  • tried running the browser in "safe-mode" (without extensions and hardware acceleration);
  • tried running my firefox-profile in a new clean firefox client of the same version (87);
  • tried running my firefox-profile in a new clean firefox client of the latest version (94);
  • tried running my firefox-profile on another computer with significantly more RAM (32GB);
  • tried running my firefox-profile with sessionstore.jsonlz4 saved earlier (a week earlier)
  • tried running my sessionstore.jsonlz4 in a brand new profile;
  • combinations of all steps above.

Partial solution: The problem is definitely related to the sessionstore.jsonlz4 file from the profile. But since this file is critically important to me, I can't just create a new blank one. I tried creating a brand new one based on the old one, but smaller in size (I used [this](https://addons.mozilla.org/en-US/firefox/addon/sidebery/) extension). The old sessionstore.jsonlz4 (A) is 10.2MB, the new one (B) is 631KB. This difference in size is due to the fact that the new file doesn't contain data in the "image" attribute of tabs. In old (A) sessionstore.jsonlz4 67% of the space was taken up by the "image" attribute (it seems to be responsible for displaying the icons on the tabs), 16% by attribute "csp" (no idea what it is), all other attributes take less than 2% each. There're no "csp" attribute in my new (B) sessionstore.jsonlz4 and "image" attributes are "null". The first and second place are the "url" (23%) and "title" (19%) attributes respectively. I moved the new (B) sessionstore.jsonlz4 to the old profile and the problem was solved (the 4129 tabs limit disappeared). However, since the new (B) sessionstore.jsonlz4 has no "image" attribute data, all tabs are displayed without icons. I wrote a simple python-script that decompresses sessionstore files into json format, then copy "images" attributes of the old (A) sessionstore.json into the new one (C), and then compresses this into the new (C) sessionstore.jsonlz4. The size of such a compiled file is 6.82MB. When using such a sessionstore (С), the tab-icons are displayed, but the problem with the limit of 4129 tabs appears again. So it's obvious that the large size of the sessionstore.jsonlz4 file is the root of the problem.

My questions: 1) How do I fix it? Obviously, the "do not use more than 4129 tabs" option is not suitable for me. I know that most users will find this number of tabs excessive and suggest using bookmarks, but it doesn't work for me either. Spread tabs across multiple profiles or even browsers? I'm afraid that's what I'll end up having to do. 2) Why is this happening? I read people online who had sessionstore.jsonlz4 over 50MB and had no problems. 3) 67% of the space in my sessionstore-(A) is taken up by images, and many of them are repeated 100-300 times - a colossal waste. In total, I counted 792 unique images. Question - is there any way to modify sessionstore.jsonlz4 to significantly reduce its size, but still leave the data about these images? I tried to create 792 files with these images on my disk and replace the "image" attributes data with the path to these files. I tried the following options:

 "image": "D:/some_dir/123.ico"
 "image": "D:\\some_dir\\123.ico"
 "image": "file:///D:/some_dir/123.ico"
 "image": "file:///D:\\some_dir\\123.ico"

But it all doesn't work - the browser just replaces all these values with "null" after loading. In the original, such an attribute usually looks something like this:

 "image": "data:image/png;base64,iVBORw0KGAAAf8...(many bytes)...5ErkJggg=="
 or
 "image": "data:image/ico;base64,...

Any other ideas on how to replace those long data:image-strings?

I'm sorry for such a vague, long question, but I really need help from the experts.

Asked by CarthagoDelendaEst 7 months ago

Last reply by Paul 7 months ago

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Web search with |Firefox

Suddenly, when I search the web with a topic search term, e.g. "thrombin", I get the error message: 'The page you are looking for cannot be displayed because an invalid m… (read more)

Suddenly, when I search the web with a topic search term, e.g. "thrombin", I get the error message: 'The page you are looking for cannot be displayed because an invalid method (HTTP verb) is being used.' Can you help me resolve this problem?

Asked by hvoorhis 1 month ago

Answered by jscher2000 - Support Volunteer 1 month ago

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v. 100.0 (64-bit Windows 10) hangs with disk access

Ever since the Firefox upgrade to v100.0 (Win10 64-bit), Firefox locks up whenever it spawns a new, external process. This happens most frequently whenever the website to… (read more)

Ever since the Firefox upgrade to v100.0 (Win10 64-bit), Firefox locks up whenever it spawns a new, external process. This happens most frequently whenever the website to which I'm connected (doesn't matter which one) attempts to print or read in a file on the hard drive. This is especially true for email sites, where these functions are most often called from within FireFox. No error code appears and it's not immediately evident that Firefox even has an issue. It just becomes completely unresponsive. I have to call up the Task Manager and kill the Firefox tasks to exit. When I reinvoke Firefox, it restarts the tabs I had open at the time I killed it. This never happened before v100.0, and does not happen in any other browser. I have a friend with a Windows 10 machine who has exactly the same problem.

Any suggestions?

Asked by Dylan Paine 1 month ago

Answered by Dropa 1 month ago

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WidevineCdm plugin has crashed

Whenever I attempt to access DRM content such as netflix or spotify I am notified that the WidevineCdm plugin has crashed. I'm running firefox version 101.0.1 on Kubuntu … (read more)

Whenever I attempt to access DRM content such as netflix or spotify I am notified that the WidevineCdm plugin has crashed. I'm running firefox version 101.0.1 on Kubuntu 22.04, I am running the debian package release, but I had this issue with the snap version too. I've submitted crash reports, but they're all "EMPTY: no crashing thread" (https://crash-stats.mozilla.org/report/index/20af09a5-6bc4-4719-9242-38f5c0220614 here's one).

Asked by mason.gulu 2 weeks ago

Answered by mason.gulu 2 weeks ago

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Another program can't open Firefox

When I look up the error message I get, everyone I see who got it can't open Firefox, but I can open it fine. For me, I have Firefox as my default browser and when anothe… (read more)

When I look up the error message I get, everyone I see who got it can't open Firefox, but I can open it fine. For me, I have Firefox as my default browser and when another program (tModLoader on Steam) tries to open it, it gives me "Profile Missing," "Your Firefox profile cannot be loaded. It may be missing or inaccessible." I don't know if it gives the same error for other programs because I can't think of any programs that open my default browser. When I switch my default browser to Edge, the program can open Edge fine.

Asked by Good_Days13 2 weeks ago

Answered by Good_Days13 2 weeks ago

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FireFox Lockups

every time i start firefox it launches 7 versions of it , it locks up and is not reliable, this just recently started occurring. I went to programs and settings for windo… (read more)

every time i start firefox it launches 7 versions of it , it locks up and is not reliable, this just recently started occurring.

I went to programs and settings for windows 10 and removed Mozilla , I the went to %appdata% and removed all directories that were named moziilla.

I then empty the trash can , and rebooted.

I then re-installed the latest version from the web site for x64 ( version 78.0.2 64 bit) and have the same issue. I go to websites and they lock up for 2 - 5 minutes , uses another browser and go to the same web sites and have no issues, happens when I go to google.com,microsoft.com etc...

I do not have this issue when I use other browsers

Any Ideas ?

Asked by swreg 1 year ago

Answered by swreg 1 year ago