Firefox Support Forum

I view a lot of PDFs for electronics design. And after some time with the browser running it starts to garble PDFs. I have not found a trigger. Sometimes it opens fine in a new container tab or private browsing, other times nothing will open it. Very occasionally refreshing a few times makes it load correctly. The error doesn't manifest for all PDFs at the same time. Open ones will remain viewable, and once the error occurs some new PDFs still open while others fail consistently. Sometimes opening the same PDF as a file from my local drive makes it render.

The rendering error is a bit unlike anything I've ever seen. There is a lot of X and Y spearing like it tried to render the same text and images in slightly different spots over and over again. When I switch virtual workspaces and come back some parts of the rendered page retain the contents of the previous workspace and others do not. Scrolling produces jitter and additional smearing.

One somewhat reliable way to trigger the error is to put the laptop to sleep and wake it up. That always causes PDFs to exibit this error but often refreshing the PDF will work to restore it. Not reliably though.

I've attached an image of the error captured with my phone because neither screenshots nor OBS can actually "see" the garbage on screen. Apologies that this error is so full of inconsistent behavior. I've lived with this for some time now in the hopes that it was a temporary problem and tried to work out what causes it but I can't find anything other than putting the laptop to sleep being a cause, and even then it is not the sole cause.

Hi, this is going to be a long one, so many things... Using Firefox the latest Ubuntu LTS, with the latest Firefox from Snap. I'm a very long term Firefox user, never had any real troubles unit recently. I have a vast number of cookies, saved passwords and so on. Reinstalling or deleting cookies or such isn't an option unless fixes are guaranteed to work - if I have to start over then I'll do it with Opera, that is where my grumpiness indicator is at.

The set up is two monitors (working as a single 'screen') attached to an Aspire PC (Aspire X seems to be the model?). I tend to have 'stuff' going on in the left hand monitor, YouTube on the right. The PC is on all day. I know there are log files, but I don't know which is for what or where they are. I use AdBlocker Ultimate.

So what's happening is: Firefox crashes quite often at any time - 'Firefox is not responding - force quit or wait' - always have to quit. There doesn't seem to be any repeatable way to cause this, it seems random.

When the mouse enters the YouTube window (the drawing area, not the actual window) it disappears until the pointer moves out of the window. Jiggling the window size sometimes brings it back, but...

When the mouse pointer actually appears the window is completely unresponsive - clicks don't work, nothing highlights and so on. After somewhere between 10 and 30 seconds things will work for 2 or 3 mouse actions (clicks, drags etc) then do it again. Unless I give it plenty of time, clicking on a video will play a pretty random one - Firefox seems to lose track of where the pointer is.

If I comment on a video the I get about 5 to 10 characters in then nothing happens for 10 to 20 seconds, then any queued characters are shown. Rinse and repeat until the comment is complete - it takes ages.

YouTube is the biggest problem, but there are some glitches in other Firefox windows, I'm supposing that the problems are audio/video related.

None of the above happens with Opera. It's getting to the stage where Firefox is unusable.

I've googled and searched this site but the there seems no solution.

Any help appreciated.

I am a website administrator and I have noticed a lot of 404 errors in my site's CDN access logs. The requested paths are all "/", and the user-agents are all "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:41.0) Gecko/20100101 Firefox/55.0". The client source IPs are distributed, and the ASNs are also diverse. The requests are made to a domain specifically used for static resources (css, js), and the referer is my main website. I suspect there might be a specific bug with Firefox/55.0. Can anyone help me confirm this?

About tab crashes Every time I open Firefox, it crashes immediately and does not trigger the crash report window. Even though I have checked and enabled the option to send crash reports in the settings, it doesn't work. When I look for crash report logs, it shows that I have not sent any crash reports.I've tried many methods to view the crash report, but it just shows that there are none. I only found this information related to crash reports in the installation files.(you can see it in the picture)，hope someone can answer this question, thank you very much.😭

I'm running the latest version of Firefox (126.0) on an iMac, OS 14.4.1. Starting a couple days ago, i was no longer to (consistently) minimize Firefox browser windows by double-clicking on the browser window title bar. I'm able to minimize the window INCONSISTENTLY and only very infrequently via double-clicking, but with no obvious pattern. This problem only occurs with Firefox. I have no problem minimizing any other browser or application windows.

My Mac OS settings are always set to "Double-click a window's title bar to minimize."

I can minimize via Command-M, but i prefer to double click. I vaguely remember this occurring on another iMac of mine some years ago, but don't remember if i found a fix, or if it went away on its own.

Thanks for any help! dan carlson Belmont, CA

Copy/Paste not working- ASKED MANY TIMES AND ISSUE STILL PRESENT

get the same old useless answer, refresh. THAT DOES NOT WORK

this platform is really past its use by date, TOLD BY BANK TO AVOID AND GOV. SITES!!!

when it comes to buying a new pc I will switch out to another browser, shame a good 12 years with FF.

BROKEN: Videos automatically play upon landing on a website. I don't want video autoplay. I had that FIXED at one point, but with the new update, all of my settings were discarded, and now I'm back to square one. I do not want video autoplay! Now, on to the next question: many complaints have been lodged on various 'help' pages and forums describing the same problem; my question is, in light of all of these complaints, why hasn't Firefox FIXED this problem and issued an update with the repair patches?! On my version of FF, Mac 126, all video controls in settings have disappeared. WHY? Where did they go? Not that they worked anyway because we had to muck about in about:config with various patches WHICH NO LONGER WORK ON MY MAC! Why is there not a simple ON/OFF switch, in Settings, for those of us who want the choice?! When are FF boffins going to FIX this to our satisfaction, with a WORKING, simple-selectable solution? I await a reply from a knowledgeable Firefox technician, one who preferably works on this part of the browser, please. Help me understand, or make me happy, preferably both.

After I boot my computer, I can access any of the sites I usually use, but only once. If I then close the site and attempt to open it again (or to open any of the other affected sites), I get the following message: " Secure Connection Failed

An error occurred during a connection to phoenixcommons.cohousing.site. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem."

The site shown in the error message above is the one I most ofen use, but other very common sites (e.g. Google.com) exhibit the same problem:

" Secure Connection Failed

An error occurred during a connection to www.google.com. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem."

Yeah, right. I'm supposed to contact Alphabet and inform of the problem?

In contrast, some sites (e.g. The New York Times, The Washington Post) are not affected.

I can paste affected URLs into another browser (I used Brave) and access them with no problems.