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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Installing a .cer file

I have a cert.cer certificate file for my Mozilla Firefox. I don't have any clue how to go about installing it for my system. Any guidance would be of great help.
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1answer
6k views

firefox shows only blank screen when opening new pdf

I use ubuntu 12.04 with firefox and adobe pdf plugin. Since ubuntu 11.04 upto 12.04 i have the problem that i can open only one pdf file in the browser. After closing the pdf, firefox only shows a ...
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1answer
283 views

How do I turn “sudo apt-get” text into clickable download links in Firefox?

In support forums, tech blogs or any other website, one may encounter some instruction similar to the following: Type sudo apt-get install sl in a terminal window, enter your password en you ...
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1answer
2k views

How can I change the hotkey to Firefox's Search Engine field (next to the address bar)

In the Ubuntu version of Firefox, the keybinding to the the Search Engine text-box (next to the addressbar) is different to what I am used to (in the Windows version). Can I change this key form ...
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1answer
3k views

Can I use the Aurora PPA to install Firefox Developer Edition?

I would like to get an auto-updating version of Firefox Developer Edition rather than a once-off installation. From comments on the announcement and this Mozilla ticket it appears that Firefox ...
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2answers
3k views

Ubuntu 14.04: Videos refusing to go fullscreen and freeze on Firefox

In Firefox on Ubuntu 14.04, just upgraded from 13.10, I can't make any video full screen without issues. When I tried it usual do this: video freezes, and sometimes you can hear the audio, but not ...
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2answers
1k views

How can I re-enable the global menu in Firefox?

Until recently, Firefox on my machine used the standard Unity global menu. However, recently the menu is no longer global and, strangely, is centered. See this screenshot: firefox-globalmenu is ...
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1answer
632 views

Firefox 7 starts with an empty “Alert”-Window and browsing does not work

Today, after I started Ubuntu (11.04) I noticed this window immediately after running firefox: As you can see it is empty. No information about what is probably wrong. I closed the file and tryed ...
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2answers
3k views

How can I enable fast printing from Firefox/CUPS using Dot-Matrix-Printer

We are doing printing from a firefox pop-up window to a 9-pin dot matrix printer, to make printing inexpensive for our application (Epson Lx 300+, Lx 300+ II family). As of now, I used IBM Pro ...
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3answers
371 views

Unbearably Slow Network Performance in Chrome/Firefox (14.04)

I've been tolerating miserable performance on my Ubuntu desktop for some time and am finally taking the time to look into it. Symptom: Using a web browser (Firefox or Chome; doesn't seem to matter) ...
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3answers
710 views

Adding x-scheme-handler without a popup in firefox

I have written a simple application which registers an "x-scheme-handler" in the .desktop file. Something like this:- [Desktop Entry] Name=Foo Exec=/usr/bin/foo %u Type=Application NoDisplay=true ...
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3answers
2k views

How to teach firefox to open rar archives

When I click on the .rar file in Firefox it offers either to open it with a default application or to save it to disk. However, the default app for .rar is set to gedit (?) So how do I change that, so ...
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2answers
934 views

how tell Thunderbird to open links in a certain Firefox instance?

I'm using Firefox and Thunderbird profiles for different activities and have them running as separated instances (processes) on different virtual desktops. This works great in general. But a big ...
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2answers
579 views

Slow Resume After suspend having chrome running with many tabs

I usually use chrome and Firefox for browsing. I also open many tabs (around 40 in both some times). The problem I have occurs when I resume the PC after having suspended it: It takes from 2 to 5 ...
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1answer
987 views

Enable thumbnail preview when uploading files in Google Chrome/Firefox?

I have google chrome and when I upload photos to Facebook or Imageshack I cannot find a way to show thumbnails, only detail view. I also tried this in Firefox. This is quite important as it is ...
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1answer
677 views

Autoproxy's auto mode doesn't work

I don't if this is the right place to ask this question, so please let me know if I can get better answer elsewhere. I just moved to Ubuntu 11.04 from Windows Vista. I've been using Firefox ...
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1answer
1k views

How do I switch Flash players?

Firefox shows that I've got Gnash installed, but in Synaptic I have the most recent Adobe Flashplayer. I've been having trouble with Flash content not working, and I'd like to try switching to the ...
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1answer
580 views

Text colors in unity

If I want to try out a different GTK3-Theme using the Unity Shell, I always have troubles with colors of the text. Many themes seem to have trouble with upper bar using similar text colors (i.e. black ...
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1answer
1k views

What's the ultimate way to install debug Flash Player in Firefox?

What's the easiest way to get a debug Flash Player (the one you can download from here, though I don't care if it's downloaded automatically) working in Firefox? 64 bit system, default Firefox from ...
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2answers
2k views

Menubar text color and firefox black making is unreadable with Ambiance. How do I fix this?

Ever since I purged kubuntu-desktop from my ubuntu installation, my firefox menu bar text changed to black. I now have trouble using firefox with the ambiance theme. Is there a package or something ...
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3answers
866 views

Cannot enable Firefox “submit crash report” option

Inside Firefox, I try to check the box in Edit->Preferences->Advanced->General which says Submit crash report, but each time I close the browser and open it again it remains unchecked. What could be ...
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2answers
191 views

Is it possible for Adobe Flash to kill my GPU?

The question Is it possible that Adobe Flash in Ubuntu 12.04 on Firefox could damage my GPU? History So... there I was, using my beloved Ubuntu 12.04, Doing some PHP/Javascript/HTML development in ...
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2answers
159 views

How do I disable the fourth button on an Apple Mighty Mouse?

I have an Apple Mighty Mouse, but it's been banged up a bit. The side buttons (4th buttons) are way too easily pressed. When I'm using Firefox, the 4th button can accidentally click and I'd go back ...
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0answers
49 views

Visiting launchpad.net in browser causes icon to appear in launcher, how do I remove it? [duplicate]

Possible Duplicate: How do I remove a website from Ubuntu’s web applications? Using Ubuntu 12.10 with Unity. I think I agreed to install a Launchpad add-on in Firefox the first time I ...
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3answers
985 views

Why is Firefox on Ubuntu choppier than Firefox on Windows?

I have nvidia driver on both OSs. Same FF version. Both with smooth scrolling enabled. Using FF in windows is a big joy! It's so smooth, like a hot knife slicing butter. Ubuntu's FF is somewhat ...
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2answers
769 views

Ubuntu tweak and Mozilla (firefox and thunderbird) cache

I usually use Ubuntu tweak to do cleanup jobs on my PC. This includes apt and program cached data and old kernels. This goes alright for most programs except Mozilla based application - Firefox and ...
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1answer
698 views

Firefox global application menu in Classic Desktop? [closed]

I am using Natty without unity, but I am a fan of the global menu applet. Unfortunately, it does not work for Firefox 5 (and other programs that draw them themselves). How can I activate the special ...
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2answers
357 views

How to show list of installed extensions for firefox via command line?

What is the command line to show the list of all installed extensions on the firefox browser? Is there any. I checked man firefox but did not help.
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2answers
5k views

How to downgrade Firefox from 30 to 28?

I've accidentally sudo apt-get upgrade (while c/p-ing instructions to do something and failing to notice that it isn't sudo apt-get update) and it upgraded Firefox from 28 to 30. Now my menus are ...
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3answers
4k views

Is there a way to lock my browser with a password?

It would be OK if it was only with my login password, but I would like to lock both midori and Firefox so that they cannot be used without entering a password. I'm running 12.04.
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2answers
12k views

How to integrate KeyPass2 and Firefox using Keefox/PassIFox in Ubuntu 13.04 & 13.10

I have already Installed KeePass2 and also installed both Add-ons Keefox, PassIFox. But I don't know how to integrate it. Pls help me with the instructions.
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4answers
12k views

Running 32-bit Firefox with sun-jre in 64-bit Ubuntu [duplicate]

I am trying to run juniper networks connect program to vpn into work and it only works on 32bit sun jre. All the things I have found with google failed so far. I can't use any scripts, like ...
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1answer
3k views

How can I stop Firefox throwing a NS_ERROR_FILE_CORRUPTED error?

I had a powercut last night and ever since then when I try to access the Ask Ubuntu Chat, I see the following error in Firebug. Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) ...
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2answers
4k views

Flash debug player installation problem

Standard Version: When I download the player without the debugger from here and place the libflashplayer.so file into the ~/.mozzila/plugins/ directory the player works fine. Debugger version: But ...
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2answers
386 views

Is running an add on like “No Script” in Firefox needed on a linux system? [duplicate]

Possible Duplicate: Should I use No-Script? A friend recommended the "No Script" add on for Firefox, however this friend runs a windows system. Is running "No Script" on a Linux system ...
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3answers
3k views

How can I change Firefox switching tabs shortcuts?

I was used to press Control+1, Control+2 and so on to switch between tabs in Firefox. Now, in Unity, I have to use the Alt key instead. How can I change that? Thanks!
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1answer
1k views

How can place Firefox’s tab close buttons on the left?

I would like to make Firefox fit more to the Ubuntu default themes Ambiance and Radiance. Therefore I would like to place the tab close buttons on the left instead of the right of each tab. I found ...
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4answers
4k views

Does Firefox have something similar to ActiveX in terms of security vulnerabilities?

People always say that Linux is more secure than Windows. The main reason seems to be the general system design philosophy and the fact that users are users and not root. One main security concern ...
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2answers
2k views

There isn’t a software package called `adobe-flashplugin` in your current software sources

I am trying to install the adobe-flashplugin on Ubuntu 14.04. On Adobe's site I choose the "APT for Ubuntu 10.04+" option. It opens Ubuntu software Center, but it tells me There isn’t a software ...
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3answers
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How to launch different firefox profiles via the keyboard using Unity

I'm a heavy user of firefox profiles - a general one, work and one just for facebook so facebook doesn't know where I'm browsing. I have customised my firefox launcher icon to give me access to ...
4
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2answers
8k views

How can I join a Skype Public chat via links?

In Windows, I can join a Skype Public chat by pasting a Skype chat link into a web browser's address bar (or clicking a link which contains that URI), but it doesn't work in my Ubuntu 10.04 using ...
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3answers
1k views

How to disable the warning sound when closing firefox

I appreciate to be warned when I try to close Firefox with multiple tabs open, but I really don't want to hear the warning sound. How can I disable the warning sound for firefox? Thanks in advance.
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3answers
904 views

Firefox becomes default browser after upgrade. Cannot revert to Google Chrome

Upgraded my notebook to Natty Beta 1 two days ago. All seems to be in order except for a very annoying little thing. I used to have Google Chrome as my default browser, and after the upgrade, this ...
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9answers
8k views

Font rendering in Firefox is blurry

A picture is worth a thousand words... so does anyone know how to fix this font blurriness in Firefox? (You'll need to right-click the picture below go to View Image to view it full-size; it's too ...
4
votes
1answer
145 views

How do I set startup/ home page to a desired website?

How do I set up the start up page to the desired website? Automatically goes to Google Search. Not sure how to adjust.
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8answers
41k views

Adobe Flash Player is not working in 12.04

I am facing problems when opening some videos and contents from some web sites. I figured out that Adobe Flash Player is not working properly in my system. I have installed a fresh copy of 12.04 on ...
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1answer
1k views

How can I run simultaneously two different firefox profiles

In (K)ubuntu, how can I run more than one Firefox profile simultaneously? I need this to run different websites with different extensions.
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4answers
11k views

How to Fix Firefox when it freezes completely after open it?

First time ever today Firefox Version 3.6.13 freezed for me on Ubuntu 10.10 64bit. I open Firefox normally but then nothing respond on the GUI.The only thing I can do is close it. When Closed I try ...
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2answers
522 views

Black dashes when scrolling on webpages. Firefox 13.10

On Firefox with Ubuntu 13.10, and Cinnamon desktop I get dashes appearing on webpages when I scroll. See screenshot: Any ideas about what this is and how to get rid of it would be appreciated. It ...
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2answers
3k views

Is running Latest Firefox on older versions of Ubuntu possible?

Is running Latest Firefox (ver. 16) on Ubuntu 8.04 possible? If so, what do I need to do to accomplish this? (If I can keep that latest support Firefox 3.6.17 alongside the latest Firefox 16, that's ...