Firefox Support Forum

Hi, I'm using Firefox 90 browser on Ubuntu 21.04. Somehow the UI font for my profile changed from the default and I can't find any way to reset it (see bad_ui_font.png) My tabs, menus and preferences all got set to some fixed-width font, and I can find anywhere in the preferences or about:config, or in my profile folder where I can change it back. If I create a new profile, then the UI font is fine (see good_ui_font.png). But as soon as I login to my firefox account and sync, then the new profile gets the bad UI font. I don't want to have to recreate my profile from scratch and lose all my settings just to correct the UI font. But this is very annoying. How can I restore the default UI font?

Thanks.

Under Ubuntu. If an application is set to be the default file handler for a certain type of file, Firefox will allow you to open such a download directly in the application. To do this, it saves the file in a temporary location, and then hands over to the application. The problem is that the location firefox uses under Linux is /tmp and modern snap and flatpak desktop apps are not allowed to see /tmp.

For instance, a .deb file is an installable software package. Ubuntu naturally uses the Software app to handle .deb files. But Software is a sandboxed snap app, and it won't open files in /tmp

The workaround of saving files and opening them from the app works, but it defeats the purpose of having registered file handlers.

And I do not know how to get firefox to save temporary download files somewhere else. I can't find any relevant configuration option.

I tried editing the firefox launcher:

env TMPDIR=/home/tim/tmp_firefox firefox

but it still uses /tmp

Hi, whenever I start Firefox up, one of the tabs randomly closes. This happens both with tabs from last session as well as newly opened bookmarks. Both on Windows 10 and Linux (MX Linux, Debian 9). Only one tab has to be "sacrificed" apparently, so I usually open the last bookmark twice.

What could be causing this? I attached what Extensions I'm currently using.

especially on startup, i get two 'windows' open. that is, instances. it happens because sometimes i click on firefox and nothing happens. if i decide too soon that it is not going to load, i click again and it then loads twice, and i get the nonsense about firefox already running. if this cannot be fixed, i would like to select allow only one instance to run as VLC offers.

I would like to be able to have two rows of tabs so things did not get so cluttered, but only if it is something like f8 to switch. since dos was squeezed out, nobody is using the f keys anyway.  :(

Hello, I found very different behaviour today between chrome,brave & firefox,firefoxdevedition with javascript and button.

As visible on the screenshots the button is created with its attributes GET and target profile.html via jinja2 templating.

But in addition, via javascript, I added a function to post the selected tables to a route called SaveToDatabase.

In chrome the js part gets executed and profile.html is loaded, but in firefox based browsers ONLY the js POST is executed and nothing else happens.

What could the problem here be?

Best regards and thank you in advance.

I got hello_xr to run but how does one view WebXR spaces by using the monado service for Firefox? I can still develop for captured mouse mode or use the WebXR API Emulator add-on but I still have not found documentation about how to get Firefox to talk to the HMD or its tracking system using monado-service. Thank you in advance.

https://github.com/KhronosGroup/OpenXR-SDK-Source https://gitlab.freedesktop.org/monado/monado

Hi, Does someone know how to install Firefox on Ubuntu Touch ?

I did install "Ubuntu touch" on my smartphone few weeks ago.

But without my favorite Firefox Navigator, this is useless for me !

Even a older version of Firefox will be fine. All i need for now, is a Sync of my configuration (bookmarks and Passwords Manager).

Regards

I would like to not allow websites to read my clipboard, except for making an exception for certain websites. Is there a method to do this? (Possibly via multi-account containers)

Greetings

Currently running 90.0.2 (64-bit) on Xubuntu.

I currently run two Firefox Windows. One is a single tab which contains a dashboard for databases that we are monitoring. The second (on a different monitor) is my "everything else window". When I click a link that is not in a browser (for instance in an email), I want to force the new tab to open in a specific window (the everything else one) or even better, to not open in a specific window (the other one).

Any suggestions would be gratefully received. Trying not to use a different browser to solve this.

TIA

Nigel.

Although i am downloading (watching on youtube) a big video 10 hours long, i think it doesnt supposed to use up so much memory as it did. It seems to use up all the memory and starts using pagefiles (although very little at first)

then, when i closed those tabs, still there is quite some memory utilization.

this is when i closed the tabs: "free m

             total        used        free      shared  buff/cache   available

Mem: 8064672 2660160 1441508 84572 3963004 5042492 Swap: 8006652 6180 8000472 " this is on linux

and this is when i first opened firefox: "free m

             total        used        free      shared  buff/cache   available

Mem: 8064672 2549188 3837212 92928 1678272 5149240 Swap: 8006652 0 8006652 " Seems like the buffer cache wasnt getting freed

It maybe a linux problem also? "PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

  5815 zoltan    20   0 4765416 589708 245788 S   0,0   7,3  14:45.88 firefox              
  9400 zoltan    20   0 3154008 393468 162180 S   0,3   4,9   0:15.25 Web Content          
  8824 zoltan    20   0 3046568 342368 124168 S   0,0   4,2   2:09.06 Web Content          
  6037 zoltan    20   0 2854088 293536  90504 S   0,0   3,6   0:31.11 WebExtensions        
  2368 zoltan    20   0 7152500 241836 127160 S   0,0   3,0   0:52.48 skypeforlinux        
  7703 zoltan    20   0  877744 181580 130280 S   0,7   2,3   1:10.53 steam                
  8956 zoltan    20   0 2542680 178160 103080 S   0,3   2,2   0:05.49 Web Content          
  1031 root      20   0 1407284 161956 115520 S   0,7   2,0   6:51.05 Xorg                 
  9543 zoltan    20   0 2605552 156552 114552 S   0,0   1,9   0:09.61 Web Content          
  7783 zoltan    20   0  668508 152440 102388 S   0,3   1,9   0:08.46 steamwebhelper       
  9462 zoltan    20   0 2594008 148664 110948 S   0,0   1,8   0:00.89 Web Content          
  1913 zoltan    20   0 6727252 143816  98988 S   0,0   1,8   0:20.30 skypeforlinux        
  2716 zoltan    20   0   82,5g 139668  68348 S   0,0   1,7   0:07.41 atril                
  7746 zoltan    20   0  617324 138788 111576 S   0,0   1,7   0:03.56 steamwebhelper       
  6009 zoltan    20   0 2462148 131364  95748 S   0,0   1,6   0:03.20 Privileged Cont      
  7994 zoltan    20   0  559464 126528  71888 S   0,0   1,6   0:02.13 steamwebhelper       
  7988 zoltan    10 -10  563008 126148  75972 S   0,0   1,6   0:01.81 steamwebhelper       
  2330 zoltan    20   0 1628048 123700  84720 S   0,0   1,5   0:01.15 skypeforlinux        
  1865 zoltan    20   0 1495136 101704  65828 S   0,0   1,3   0:06.99 caja                 
  9577 zoltan    20   0 2415856  85524  70340 S   0,0   1,1   0:00.18 Web Content          
  2624 zoltan    20   0  854128  80716  36532 S   0,0   1,0   0:14.29 pluma                
  1872 zoltan    20   0  769544  73688  56812 S   0,0   0,9   0:08.50 wnck-applet          
  7927 zoltan    20   0  495788  73384  59180 S   0,0   0,9   0:00.06 steamwebhelper       
  7807 zoltan    20   0  312832  70260  56356 S   0,0   0,9   0:00.25 steamwebhelper       
  2350 zoltan    20   0  930396  68308  54672 S   0,0   0,8   0:09.89 skypeforlinux       "

there are a bunch of skypeforlinux processes and steamwebhelper. I did not open these software multiple times.

Hello everyone ! and excuse me for my English cause I'm french . I have choosen a theme ( dark blue mountain theme) and it always disappear . I have firefox' s account and the synchro usually works . So if you can explain that to me ..

By advance

Thanks !!

Nico

When I navigate to a web page with an embedded PDF file, the Firefox dialog box saying "You have chosen to open:..." pops up and I'm given options on how to open the PDF, either in Firefox (which opens it in a separate tab, or in a separate application which I can select (e.g. PDF Viewer), or to save the file.

Why does Firefox not open the PDF inside the current web page where it is supposed to be displayed? I don't want it opening in a separate tab and I don't want to download the file, I want to view it where it is.

This has security implications.

I have Firefox set to automatically download PDF files to my Downloads folder. My understanding, based on some common sense is that the automatic download setting should only apply when I click a download link. However, that is not what Firefox is doing.

Due to the above mentioned strange behavior when I open a web page with an embedded PDF, Firefox automatically downloads it as soon as the page loads. Firefox does not wait for me to click on any link, or to click on the embedded file.

I don't think it makes any sense to do this: the automatic download setting should govern what happens when you try to download a file, so there must be an intended action like clicking a link that tells Firefox you want to download it. It makes no sense, and I would argue it's downright dangerous, for Firefox to start downloading embedded items from web pages without the user's knowledge or consent.

Please can someone provide some insight into why Firefox is set up to work like this, or if it is a bug. I'll be happy to provide more info if needed.

I want to enable the clipboard for remote CLI Desktop access, i found on about:config: clipboard.autocopy, clipboard.plainTextOnly and are enabled. But, the clipboard still dont working. Someone, could help me?

Going back to a previous question that never got answered, I also am seeing corruption in whatever font Firefox and Thunderbird are using for their UI font. I have searched for various fixes, but none of them do anything to change the font used for the Firefox address bar, or the emails listing in Thunderbird. At most all you find is how to change the font size or scaling, which is going to be useless if the font is corrupted (or the applications are not handling them correctly).

I'm figuring the way to verify whether it's a font defect, as opposed to a problem with the underlying code from FF & TB, is to change what font the applications are using, and/or to reinstall the particular font in question. So what is it using, and how do you edit that?

Firefox 90.0, Thunderbird 78.12 Fedora 34, Cinnamon Desktop

For years I was experiencing problems with my printing. On many web pages (eg Consumer Reports) a banner was inserted at the top of the print page (printer and pdf) that blocked some of the text of the page. Also many blank pages were inserted at the end of the document. I don't know what I did exactly but the problem suddenly disappeared. What I did in frustration was to go to the about:config and filter to print. I didn't see anything that I would dare try to change. I isolated the modified choices. Well the bottom line was that when I tried to print a bad output the printing was perfect. I think the controls were in the about:config but they were never picked up or registered but I could be entirely wrong. I don't think I changed anything when I was in there. Before I did that I also tried to use Google Chrome. That one gave me a good print page also. Opera did not. Now Opera was working also. I am using Linux Mint 19.3. I just hope my computer doesn't have a relapse.

I've been working around Ubuntu not recognising my Wacom Cintiq Pen-Display by continuing to use Ubuntu 18.04. (Early versions of Ubuntu 18 didn't recognise the screen either and I continued using Ubuntu 16.something, until a new release fixed the problem, then it broke again). Trying to find a solution I discovered that by switching off the screen and back on again after booting and logging in, Ubuntu then recognised it and worked. When image processing, I need to do the switch off-on before invoking Gimp. I guess Gimp configures its IO at start up so that is understandable. Is there a better way either to configure Ubuntu so that it recognises the cintiq screen correctly at start up, or can I (re)start the system service or deamon that interfaces to it without it switching off-on? Thanks for taking the trouble to look at this. Kind regards 13arry 13arker

I wonder if feature can be added so mouse scroll wheel can be scaled with website so if i use 50% scale, or 200% scale, scrolling speed still looks same? Rather than very slow for 50% or very fast for 200%.

I have set a master password to protect my stored passwords, bug since then, I encounter two main problems.

First one, I have a corporate proxy with authentication. When master password is set, when starting Firefox, I get the master password prompt. After typing it, the page won't load, the authentication to the proxy isn't done and no proxy authentication dialog popup. I have tried to toggle the key network.automatic-ntlm-auth.allow-proxies in about:config between true/false without success.

The other problem is when displaying store credentials (about:logins). You should type your master password, but then, the page displays no stored password. Waiting a bit (2-3 minutes) make them appear, but there is no loading indication and the browser becomes largely unresponsive surely due to the cost of password deciphering (I have a lot of stored passwords, around 700…).

I haven't found any bug declared for those two problems.