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Questions tagged [firefox]

Mozilla Firefox is a free and open source Gecko-based web browser. It is the current default for the Ubuntu desktop.

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235 votes
12 answers
271k views

How do I install the Firefox Developer Edition?

Mozilla released the Firefox Developer Edition! How do I install it on Ubuntu? Source: Mozilla Releases 'Firefox Developer Edition' for Windows, Mac and Linux - OMG! Ubuntu!
blade19899's user avatar
  • 26.8k
183 votes
9 answers
83k views

How to solve "Pending update of "firefox" snap. Close the app to avoid disruptions" error?

Recently, this warning appears when open Firefox: Pending update of "firefox" snap Close the app to avoid disruptions What does it mean? And what do I have to do? Is this a bug?
Emilio's user avatar
  • 2,091
158 votes
11 answers
166k views

How do I install the latest stable version of Firefox?

I want to install the latest Firefox on my Ubuntu (64bit) box. What is the best way to do this? Is there a specific update site or should I download the binaries manually? If doing manually, in which ...
danimajo's user avatar
  • 1,683
138 votes
13 answers
120k views

How to install Firefox as a traditional deb package (without snap) in Ubuntu 22.04 or later versions?

As far as I see in the ongoing development for 22.04 Jammy, Firefox is a Snap package. The related Deb package in apt is just a shortcut/link to the that snap version. I prefer my installation not to ...
igi's user avatar
  • 2,727
100 votes
2 answers
62k views

Firefox Middle Mouse Button Scroll

How can I get the middle mouse button to behave correctly in Ubuntu? Clicking the middle button does not show the arrow which allows me to scroll the page by moving the mouse. Information: Firefox 3....
The Pixel Developer's user avatar
88 votes
9 answers
505k views

Removing Firefox in Ubuntu with all add-ons like it never existed

I have been using Firefox for a long time in Ubuntu, I downloaded some add-ons but it made firefox extremely slow, even if I remove them nothing will change. I tried to remove Firefox also, but re-...
Hossein's user avatar
  • 1,737
84 votes
8 answers
91k views

How do I put a web application on the Launcher?

Sometimes I see pictures of screenshots with people with web applications and nice icons on their launcher, how can I set this up?
Jorge Castro's user avatar
  • 72.2k
79 votes
2 answers
44k views

what is the file: C:\nppdf32Log\debuglog.txt [closed]

After I updated to 12.04, a file named C:\nppdf32Log\debuglog.txt occurs in my home directory. The content of the file is as the follow: NPP_Initialize : called NPP_GetValue is called NPP_SetWindow : ...
Jesse's user avatar
  • 907
74 votes
6 answers
44k views

How do I downgrade Firefox v. 57 to v. 56?

What is the most straight forward way to downgrade Firefox 57 to Firefox 56? This is to have more time to wait for working replacements for legacy extensions.
Jani Saarenpää's user avatar
74 votes
6 answers
377k views

How to install the Java plugin for Firefox?

I am trying to install Java and plugins for Firefox. I installed both the JDK and JRE. When I try with the sudo update-alternatives --config java command it shows only one choice available. Plugins ...
user199273's user avatar
73 votes
11 answers
132k views

How to tell Chrome what to do with a magnet link?

Right now Chrome throws its apron over its head and calls Firefox, which opens the link with rtorrent. What do I need to do to eliminate the Firefox step?
BevA's user avatar
  • 847
73 votes
4 answers
19k views

How to revert Firefox 89 to the old design

How can I restore the Firefox 89 design to the old one? Specifically the tab design. I can't tell (easily) what tab is open. I can't find anything in the menus. I'm running Firefox 89 on Ubuntu 21.04 (...
Wonko the Sane's user avatar
70 votes
2 answers
83k views

Why can't Firefox run local .swf files?

My goal is trying to run .swf files through Firefox and NOT a standalone player. When trying to run local .swf files on Firefox 29.0 (currently on 14.04), the browser opens the Open With/Save File ...
maki57's user avatar
  • 1,827
69 votes
1 answer
12k views

Notification saying "A new Virus is Stealing Data!" on Ubuntu 18

Recently whenever I open Firefox I get a message in notification center. It's not always the same and it keeps changing. here is an example: It's not always this. It gives other messages too and ...
Anne Webster's user avatar
69 votes
7 answers
238k views

How do I launch a remote firefox window via SSH?

When I SSH to a remote box $ ssh -X remotebox then start firefox on the remote box remotebox$ firefox and I have firefox running on my local machine, a local firefox window will open. no firefox ...
Lesmana's user avatar
  • 18.5k
68 votes
7 answers
69k views

How to hide title bar in Firefox 57 Quantum?

I used to use an extension to hide/show the title bar in Firefox, but since Firefox 57 was released most of the extensions were disabled. In Chrome I just uncheck the option "Use system title bar and ...
Jamo's user avatar
  • 925
61 votes
6 answers
89k views

How to enable touchscreen scrolling in FireFox?

I have noticed that touchscreen doesn't work in FireFox on Ubuntu 16 desktop (on a touchscreen laptop), which is a major bummer as I am a FireFox guy and the browser is 90% of what I use my personal ...
Hack-R's user avatar
  • 1,017
60 votes
3 answers
40k views

What does the Ubuntu Firefox Modifications extension to firefox do?

I'm presently running Firefox 3.6.8 on Ubuntu 9.04. My Firefox extensions include Ubuntu Firefox Modifications 0.9rc2. I've upgraded Firefox on this install a few times; as far as I can recall, some ...
vanden's user avatar
  • 1,400
56 votes
13 answers
70k views

How can one make Firefox ignore my GTK theme entirely?

I have a dark GTK theme installed in my Ubuntu 10.10 install and a persona installed for Firefox that I also like. The problem is that Firefox is using my dark GTK theme for items like buttons and ...
tamale's user avatar
  • 1,459
56 votes
11 answers
155k views

Adobe Flash Plugin is vulnerable/outdated in 14.04 but there is no update in Firefox

I am using Ubuntu 14.04 LTS. When I open a site which requires flash plugin (e.g. Youtube), Firefox says This plugin is vulnerable and should be updated. However if I click Check for updates... there ...
fikr4n's user avatar
  • 1,285
54 votes
6 answers
30k views

Disable CTRL+Q in Firefox without keyconfig extension

How do I disable the Ctrl + Q shortcut in Firefox without using the keyconfig extension?
Lesmana's user avatar
  • 18.5k
51 votes
3 answers
335k views

Transfer bookmarks from Chrome to Firefox

I have currently got Google Chrome and Firefox installed, but I want to switch to Firefox so I want to some how transfer my mass collections of bookmarks from Chrome to Firefox, so is there any way of ...
user avatar
49 votes
6 answers
127k views

How to update libavcodec on ubuntu 14.04?

On Ubuntu 14.04.5 I just upgraded firefox to version 50.0; now there is a message on some pages which reads: libavcodec may be vulnerable or is not supported, and should be updated to play videos ...
Alex's user avatar
  • 865
48 votes
3 answers
157k views

Firefox not playing videos on Ubuntu 20.04.4 LTS

My newly deployed Ubuntu 20.04.4 LTS has already installed Firefox 80, but most videos in the web are not playable. One codec complains "No video formats available", while the other, for ...
mathway's user avatar
  • 1,704
48 votes
1 answer
123k views

Playing Videos in Firefox

I use Ubuntu 18.04 and Firefox 60.0 (linux beginner!) I just installed the flash player, but the only videos that are displayed in my browser are the ones on youtube. facebook and any other streaming-...
apfelschwarz's user avatar
47 votes
9 answers
93k views

Add certificate authorities system-wide on Firefox

I want to add some root CAs that doesn't come with the default firefox on Ubuntu, but I don't know how. I tried adding them to the local certificates with certutil, but it didn't work. It messed up ...
Jorge Suárez de Lis's user avatar
47 votes
6 answers
216k views

How can I make Firefox open magnet-links in Transmission?

I can't find out how to make Firefox open magnet-links in Transmission. There is no option to make it the standard program for magnet-links in its properties, and as I am not experienced with the ...
Esso's user avatar
  • 1,035
47 votes
6 answers
227k views

Where is Firefox's plugins directory?

I know that there are extensive, "proper" methods for installing Firefox plugins. However, I would like to know where the folder is for linking shared-object (.so) files, such as libnpjp2.so and ...
Richard's user avatar
  • 8,512
44 votes
5 answers
31k views

Firefox 57 shows dark input boxes/dropdown menus with dark text on Gnome dark themes

Original Question (only about input boxes): I use Arc-Dark theme on Ubuntu Gnome, and I know this issue existed on older Firefox versions too but it could be fixed with this Stylish script (which ...
Eärendil Baggins's user avatar
44 votes
4 answers
25k views

Is there a work around to get protected Hulu or Amazon Prime instant videos working?

When I went to watch some only episodes of star trek on Amazon Prime, the player would get stuck on updating. I followed the instructions here and doing so actually worked for 3 seconds. It was the ...
Nil's user avatar
  • 1,006
43 votes
3 answers
64k views

Your native host connector do not support following APIs: v6

When I try to download extensions on https://extensions.gnome.org/, this message appears: Your native host connector do not support following APIs: v6. Probably you should upgrade native host ...
Robin's user avatar
  • 541
42 votes
4 answers
90k views

How do I install Firefox 52 ESR on 16.04?

This question asks how to install FF32 bit while keeping the 64 bit. I want the much more simple thing: is there a canonical way to install firefox 52 ESR as "default" firefox in my 16.04? I found ...
GhostCat's user avatar
  • 2,105
42 votes
2 answers
65k views

"Although GNOME Shell integration extension is running, native host connector is not detected" error in 22.04

I upgraded my system from Ubuntu 20.04 LTS to 22.04 LTS and I'm now facing this error on the GNOME Shell extensions webpage: This was solved in previous versions, and I have tried these solutions: ...
Vam's user avatar
  • 775
40 votes
4 answers
19k views

ERR_NETWORK_CHANGED on Chrome with Ubuntu 17.04

When I use Google Chrome (currently 61, but the error exists before), I constantly get ERR_NETWORK_CHANGED. Often, the webpage reloads and works a second later, but often things simply don't work. For ...
Krangerich's user avatar
39 votes
4 answers
50k views

Firefox doesn't play audio

To be clear, the audio on my laptop is working just fine. Other applications in Ubuntu play sounds as expected. Firefox, however, won't output any audio through the native speakers or headphones. ...
Loewen-Samuels's user avatar
39 votes
5 answers
50k views

Can I view Firefox history with the terminal?

Is there a command to show Firefox history from the Terminal ? without the need to Enter Firefox history graphically .
nux's user avatar
  • 38.2k
38 votes
1 answer
19k views

How to disable the "website is now full screen" warning in Firefox?

Whenever I switch a video in Firefox to full screen, a message appears at the top edge of the screen, that the website is full screen now. I find this quite annoying and unnecessary as I am the one ...
mook765's user avatar
  • 16.3k
37 votes
4 answers
18k views

How to make Gmail open when clicking mailto: links in the same browser it is clicked? (Chrome/Firefox)

I just installed 12.04 and when clicking mailto: links Thunderbird opens. I want Gmail to open in the browser, in which mailto: was clicked. So if I am in Firefox and click a mailto: link a new FF ...
max's user avatar
  • 1,399
37 votes
8 answers
37k views

How to know each TAB memory usage ?

Hi, is it possible to know that, if Firefox or any browser is opened, whats the amount of memory taken up by each TAB of web-browser ? I am just curious to know.
Raja G's user avatar
  • 103k
37 votes
7 answers
58k views

How Do I Open Fixed Window In Firefox (like Chrome app mode)?

I'm essentially wanting to create a desktop shortcut to open a window of Firefox without tabs, locked address bar, no menu, etc. Similar to what some pop ups look like or what Chromium Desktop Apps ...
Sajan Parikh's user avatar
  • 1,065
37 votes
9 answers
85k views

How to install Firefox addon from command line in scripts?

I want to improve my unattended script adding some Firefox addon, however I cant find the way, Can someone help to find out how to? Example: (Want to install adblockPlus plugin and set a new ...
glococo's user avatar
  • 471
36 votes
6 answers
87k views

Ubuntu DNS Error Chrome: DNS_PROBE_FINISHED_NXDOMAIN, Firefox similar

I am unable to visit most sites online in either firefox or chrome. I can access google docs so I am researching on windows 7 (dualboot) and rebooting into Ubuntu (recently upgraded to 16.04). Test 0:...
Nick S's user avatar
  • 462
35 votes
2 answers
121k views

error while loading shared libraries: libgtk-x11-2.0.so.0: No such file or directory

My OS is Ubuntu 14.04. I am trying to download a a 3.6.x firefox version. I've gotten this one. According to the README, all I have to do is unpack, enter the folder and run ./firefox. However, I get ...
regina_fallangi's user avatar
34 votes
10 answers
3k views

Can I make links to email addresses open Gmail instead of Evolution?

When I click on a link to an email address in Firefox or Google Chrome a "Welcome to Evolution" screen appears. Can I make Gmail open instead, or at the very least disable Evolution from running?
ændrük's user avatar
  • 77.2k
34 votes
3 answers
188k views

How to update Mozilla Firefox web browser on 64-bit Ubuntu 12.04 LTS in a safe, secure, reliable, efficient and easiest way?

I'm using 64-bit Ubuntu 12.04 LTS on my machine. Currently, I'm using Mozilla Firefox 33.0(Mozilla Firefox for Ubuntu canonical - 1.0) I'm not getting update option in menu Hrml->About Firefox but ...
PHPLover's user avatar
  • 1,797
34 votes
2 answers
39k views

Now that I have Firefox 49 or higher, how do I watch Netflix?

Just got the Firefox 49 update (yay!) But Netflix still wants to install Silverlight (boo!) How can I watch Netflix in Firefox, as has been advertised?
Organic Marble's user avatar
34 votes
6 answers
94k views

Mozilla Firefox terribly slow on Ubuntu 14.04

It is being observed since my upgradation to Ubuntu 14.04, that the Firefox browser is terribly slow. Can anything be done about it?
Indian's user avatar
  • 1,560
33 votes
6 answers
142k views

How do I get HTML5 h.264 Video working on Firefox?

According the the release notes for Firefox 26, h.264 video should now be working in Linux. It does also say the appropriate gstreamer plug-ins need to be installed. Does anyone know what these are? ...
HarlemSquirrel's user avatar
33 votes
6 answers
8k views

How to remove `t=canonical` from Firefox browser searches made on DuckDuckGo?

In Ubuntu 14.04, when I do a search in Firefox using either the address bar or the search bar, the system always adds t=canonical to my searches. So the full string becomes: https://duckduckgo.com/?q=...
Daniel's user avatar
  • 4,030
33 votes
2 answers
15k views

How to remove Snap completely without losing Firefox?

I am wondering whether or not there is a way to completely remove Snap from Ubuntu 21.10 (Impish Indri) without losing the ability to install Ubuntu's default browser Firefox. When I just recently ...
user5950's user avatar
  • 6,266

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