50%-100% CPU usage with no tabs

For some weeks I have ad an issue with Firefox using 50%-100% of CPU. Normally it is the Firefox process itself, sometimes it is also "Privileged Cont". OS is Kubuntu 24… (ვრცლად)

For some weeks I have ad an issue with Firefox using 50%-100% of CPU. Normally it is the Firefox process itself, sometimes it is also "Privileged Cont".

OS is Kubuntu 24.04. Firefox has done this across 2-3 versions.

Things I have tried:

Restarting Firefox No change, I'll even get 100% cpu usage with no tabs open

Refresh Firefox to remove settings and addons No change

Uninstall Snap and try direct Apt package No change

Remove ~/.mozilla to fully remove any residual settings/cache/etc No change

Try with and without hardware acceleration See: https://support.mozilla.org/en-US/questions/1308215 No change!

I would blame my old computer hardware, but Brave runs fine. I am now using Brave, but would dearly like to return to Firefox as I miss containers, and I don't support a chromium dominated web.

კითხვის დამსმელი julian3 4 საათის წინ

ბოლო პასუხის გამცემი julian3 3 საათის წინ

Opening new windows and swapping between windows takes 10 seconds or more

I have recently built myself a new computer and started running MS Windows 11. I have a problem with Mozilla Firefox, where after a few days of being installed it takes … (ვრცლად)

I have recently built myself a new computer and started running MS Windows 11.

I have a problem with Mozilla Firefox, where after a few days of being installed it takes 10 seconds or more to load (or to load subsequent new windows). It also takes a long time to switch from window to window or to close any windows. Opening and swapping between tabs is immediate.

Here is what I have tried:

- Switching off hardware acceleration. - Clearing the cache, deleting all other data and uninstalling the single add-on I use. - Creating a new profile. - Using Mozilla's own "Refresh Firefox" option. - Trying the beta version. - Probably some other stuff that I've forgotten about.

The ONLY way I can get things running at the proper speed again is to completely uninstall Firefox using an uninstaller (that also deletes all the registry entries), restart the computer, and then reinstall Firefox.

After setting things back up the way I want, Firefox will run nicely for a number of days, then will slow down again to the point where I have to uninstall and reinstall (whilst also deleting the registry entries).

It doesn't seem to make any difference whatsoever whether the computer has or hasn't been restarted during that time.

Does anyone have any idea why this is happening?

კითხვის დამსმელი Nick Petrofski 14 საათის წინ

videos wont stream/play

Videos will not play in firefox. They will play in safari. I tried clearing cache and settings to allow websites to auto play video and sound. Nothing is working. It says… (ვრცლად)

Videos will not play in firefox. They will play in safari. I tried clearing cache and settings to allow websites to auto play video and sound. Nothing is working. It says I have the latest version of firefox. HELP!

კითხვის დამსმელი Sherry Cushman 17 საათის წინ

Bookmarks search has slowed to a crawl, makes browser unusable until search is complete

Hi - I've been using Firefox for 10+ years, and have not touched my add-ons etc for years. I also regularly clear my cache of temp files. That said, searching my (vast… (ვრცლად)

Hi -

I've been using Firefox for 10+ years, and have not touched my add-ons etc for years. I also regularly clear my cache of temp files.

That said, searching my (vast) bookmarks in Firefox used to be lickety-split, very fast. Then, it started slowing down, on both PC (Windows 10). Then, a little while later, it started on my laptop (Macbook with latest IoS).

It's now gotten so bad that I am searching my emails to find the links I'm looking for, rather than putting my browser into a coma for a time, because it freezes.

What is the problem, and how do I overcome it?

J

კითხვის დამსმელი JonS 19 საათის წინ

Web search error message "Server Connection Failed".

Hello, i am having an issue with firefox mobile for android not loading certain websites. This seems to happen randomly and i cannot figure out why. When i click on a web… (ვრცლად)

Hello, i am having an issue with firefox mobile for android not loading certain websites. This seems to happen randomly and i cannot figure out why. When i click on a website url from the search page i sometimes get the error message, "Server Connection Failed", and i cannot get the page to load at all. I have tried to clear my cookies, clear my cache, uninstall and reinstall firefox as well as update it but it still keeps happening. This has been going on for years to the point where i am forced to use other browsers to get certain pages to work and load properly. I dont want to leave firefox because i really need the dark reader extension app because i have photo sensitivity due to epilepsy.

Can anyone help me figure this problem out or offer me an alternative browser where i can turn every page that i search to dark mode like the extension dark reader?

Thank you!

კითხვის დამსმელი Cody Rentas 1 დღის წინ

Menu bar on MacOS obscured by FF 135.0.1

Hello, ever since I upgraded MacOS to 15.3.1 and Firefox to 135.0.1 the top menu bar seems to disappear. I do not know which is the culprit, but on MacRumors (https://www… (ვრცლად)

Hello, ever since I upgraded MacOS to 15.3.1 and Firefox to 135.0.1 the top menu bar seems to disappear. I do not know which is the culprit, but on MacRumors (https://www.macrumors.com/) you'll find several others with the same experience.

My personal observation is that it seems to happen on various Silicon hardware (tried 3) and when multiple tabs are active.

The bug is no showstopper, but to proceed you got to click on the (invisible) menu bar in the upper left. Thanks for reading.

JOOP!

კითხვის დამსმელი Sciuriware 3 კვირის წინ

ბოლო პასუხის გამცემი Sciuriware 1 დღის წინ

Some websites not working’ in ‘Firefox, ’ Forced to use chrome to complete transactions.

Wasted a lot of my time trying to figure out California DMV registration renewal in firefox. Would not complete transaction. Forced to use chrome instead. So, why should … (ვრცლად)

Wasted a lot of my time trying to figure out California DMV registration renewal in firefox. Would not complete transaction. Forced to use chrome instead. So, why should I continue firefox if I'm being forced to use chrome?

კითხვის დამსმელი Lost in all the convolution 1 დღის წინ

SVG logo not displaying in Firefox · works in every other browser tested!

I understand Firefox has always had a bit of an issue with SVG - and the 'Firefox has higher standards' doesn't really cut it. I personally love Firefox but the number o… (ვრცლად)

I understand Firefox has always had a bit of an issue with SVG - and the 'Firefox has higher standards' doesn't really cut it.

I personally love Firefox but the number of users doesn't warrant spending much time redevloping sites to overcome a shortcoming that no other browser has.

Eg of a website the problem applies to - https://fontmellmagnavillagehall.co.uk/

კითხვის დამსმელი Gideon Roberts 2 დღის წინ

ბოლო პასუხის გამცემი Gideon Roberts 2 დღის წინ

Emojis on Facebook

I can only see 2 emojis on my Facebook items. I used to see 5 or 6 This is a recent problem I can see them all if I use another browser Why is this, and can you fix it? … (ვრცლად)

I can only see 2 emojis on my Facebook items. I used to see 5 or 6 This is a recent problem I can see them all if I use another browser Why is this, and can you fix it? I like Firefox.

კითხვის დამსმელი kringen 2 დღის წინ

ბოლო პასუხის გამცემი kringen 2 დღის წინ

Page jumps back to the top on right/left click.

Still waiting for an answer to the above question. Why does the page jump back to the top when I want to open a link in a new tab? The link is halfway down a page but whe… (ვრცლად)

Still waiting for an answer to the above question. Why does the page jump back to the top when I want to open a link in a new tab? The link is halfway down a page but when I do a right/left click it jumps and invariably opens the link a few articles above the actual article I want to read. This had been happening for months now and nobody has bother to give a solution.

კითხვის დამსმელი pete_scott2 1 თვის წინ

ბოლო პასუხის გამცემი pete_scott2 2 დღის წინ

A webpage I just closed recently is not listed Back arrow issue

A webpage I just closed recently is not listed in the drop down window from History and also Recently closed tabs. In addition sometimes when I click on the Back arrow, i… (ვრცლად)

A webpage I just closed recently is not listed in the drop down window from History and also Recently closed tabs. In addition sometimes when I click on the Back arrow, it does not go back and when I have right clicked on the Back arrow, it has shown previous webpages.

კითხვის დამსმელი Wayne Carpenter 2 დღის წინ

Poor Performance

Suddenly Firefox will not connect to websites,Elders weather,message states security risk.You have been connecting me for years.Herald Sun you will not allow me to log in… (ვრცლად)

Suddenly Firefox will not connect to websites,Elders weather,message states security risk.You have been connecting me for years.Herald Sun you will not allow me to log in.All this suddenly started after last update.Not a problem with other browsers.

კითხვის დამსმელი kenbosch 2 დღის წინ

White screen web windows

I recently purchased an IMAC 2024 M4 running Sequoia OS computer and migrated my files from my old IMAC. I have been using Firefox for over 15 years without at problem. N… (ვრცლად)

I recently purchased an IMAC 2024 M4 running Sequoia OS computer and migrated my files from my old IMAC. I have been using Firefox for over 15 years without at problem. Now I cannot open often visited sites like my bank, American Riviera Bank, Craigslist and others. I just get a blank white screen when attempting to access the website. The same ones are fine on Chrome. What has happened here and how do I correct this - Its really making me crazy. Thank you, Richard Houser

კითხვის დამსმელი richouser1of1 2 დღის წინ

Paypal suddenly not working

Unable to use paypal on Firefox (136.0) for a couple days. Worked fine previously for years. Click on paypal payment link at multiple websites produces a window with sp… (ვრცლად)

Unable to use paypal on Firefox (136.0) for a couple days. Worked fine previously for years. Click on paypal payment link at multiple websites produces a window with spinning circle which eventually disappears. No transaction is recorded. I've checked with paypal, no issues with account and no record of failed transactions. I've deleted the history cache for paypal. Still doesn't work. Paypal does work with Chrome at same websites.

კითხვის დამსმელი RWT 2 დღის წინ

после обновления кнопки подтверждения запросов на сайтах не активны

После обновления от 19.03.2025 не нажимаются кнопки подтверждения, нет перехода на всплывающие окна и раскрывашки. Кнопки просто не активны.

კითხვის დამსმელი dpuazhv 3 დღის წინ

Regarding the new version of the browser, do you want to improve it or do you want to lose customers?

Suddenly found that there is a good key is not there, and other application habits are not built, currently found four points that will allow me to replace the browser ha… (ვრცლად)

Suddenly found that there is a good key is not there, and other application habits are not built, currently found four points that will allow me to replace the browser habits. 1. close the web page a key to restore, gone, although there are shortcuts, but inevitably will conflict with other software, without this very difficult 2. Open the bookmarks on the web page, actually from the original web page directly replace the original as long as the point of opening a new web page, a new window will pop up to change, it is because of this just choose Firefox, or else use Google's browser! 3. Complaints about the time of the proposal, very not silky smooth, looking for a long time, click on the input is also a problem, a problem can not be found, a ring set of rings, can not be simple earlier tips from where to send mailboxes! 4. Extensions and themes can not be used, some translations, downloads, screenshots can not be used, your purpose should be to better serve the people, if you do not allow the installation of extensions and plug-ins, you do a good job of their own can also be, but you do not have, or to build a good use of your own plug-ins platform for everyone to download the genuine, I think it will be better for everyone to use!

The above four points, I will send an email every day until March 31, if these have not been updated, or I have not been given if to change the operation to restore these features, I think I will replace a browser that has been used for a long time.

Translated with DeepL.com (free version)

კითხვის დამსმელი 749102497 3 დღის წინ