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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10
votes
2answers
1k views

Ubuntu Touch: no onscreen keyboard in Firefox?

How can I open an on-screen keyboard in Firefox on Ubuntu Touch (bq M10, OTA10.1)? I've tried in both tablet and desktop mode, and no keyboard pops up. I tried some other things, such as dragging from ...
0
votes
3answers
35 views

Where do I put the php file so FIrefox sees/runs it?

I am brand new to web services and php. I want to experiment writing php code/files. I have installed nginx 1.10 php 7.0.8 on Ubuntu 16.04.1 I can get the php file to execute from the command line,...
-1
votes
0answers
14 views

Adobe Flash problems-

Currently using Ubuntu version 14.04 I understand there are some codes that can be copy-pasted into the terminal as an alternative to installing Adobe Flash, because Adobe isn't seeming to be ...
1
vote
1answer
72 views

HTML5 for Firefox 46.0.1 Ubuntu 12.04.5 Lts

I am a new user (ie. please be detailed). I have this version of Firefox : 46.0.1 installed and recently learned how to install Flash Player with great difficulty. Now I realize I cannot watch via ...
0
votes
1answer
34 views

Firefox ignoring it's own preference/settings in 16.04

I checked out this following link: Firefox ignoring it's own preference/settings in 12.10 but it wasn't resolved. My specific situation is that I installed Ubuntu 16.04 onto an SSD and then ...
0
votes
2answers
28 views

Where is search history stored in Firefox and how to disable it?

Firefox stores my search history, but I would like to know exactly what it is storing. So is there a file or something where these entries are logged? Also is there a way of disabling the search ...
0
votes
2answers
11 views

Reset default Browser to Firefox after install Chrome in Kubuntu 16.04

I'm developing a webInterface so I installed Opera and Chrome on my KUbuntu 16.04. System (additionally to Firefox which I usually use) BUT ... It seems that after installing Chrome some services use ...
0
votes
1answer
9 views

Sceen goes blank when using browser for certain tasks using 16.04

I am using Description: Ubuntu 16.04.1 LTS Release: 16.04 Codename: xenial on a gigabyte brix S which comes with a built in intel card lshw -C video *-display UNCLAIMED ...
2
votes
0answers
23 views

How to set default browser on Ubuntu touch?

I want to set Firefox as default browser on Ubuntu touch so that links in Dekko, Rss reader... open in Firefox in stead of the Ubuntu touch browser. I can't find a "default browser" setting in the ...
47
votes
4answers
222k 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 ...
0
votes
3answers
137 views

Kubuntu -> Chrome and Firefox Tab and bookmarks fonts are really tiny

How do you make them bigger? Things I did today. I had a monitor go black today, loaded nvidia management to correct this problem, also adjusted monitors via window management. Not sure if those ...
0
votes
0answers
35 views

Flash Player on Ubuntu 16.04 firefox no video

I have ubuntu 16.04, firefox version 47. and according to this page https://helpx.adobe.com/flash-player.html my flash player version is 21.0.0.197. It was working fine till about a week ago when ...
0
votes
0answers
6 views

HiDPI screen. Changing layout.css.devPixelsPerPx in Firefox does not work for gmail

I'm experiencing a lot of problem with my new laptop with HiDPI screen and Ubuntu 16.04. Maybe the most annoying is related to Mozilla Firefox. I partially solved it by using the hint described here ...
6
votes
2answers
577 views

Regain control after opening firefox via terminal

I'm opening firefox via the terminal using firefox but I can not type any other command after this one since I don't regain control of the terminal after having typed that. The only way to do so (...
0
votes
0answers
11 views

16.04: can no long navigate firefox bookmarks by typing a character

Using Firefox under Ubuntu 12.10, I could enter alt-b to pull up the bookmark list. I could then type the first character of the bookmark or folder to navigate to it. I performed a clean ...
3
votes
1answer
92 views

Firefox cannot access a frequently visited website anymore

I have tried unsuccessfully all the troubleshooting available from Firefox but I keep getting the same error: The following error was encountered while trying to retrieve the URL: http://vodlocker....
3
votes
1answer
107 views

How can I use Pearson's ePEN java applet on Ubuntu?

I mark exams for Pearson online using a Java applet called e-PEN on this site. The 'minimum system requirements' state that only Vista or later Windows, and Internet Explorer 9 or later, are supported....
0
votes
0answers
24 views

Firefox Profile cannot be loaded

I am new to Ubuntu. Through dual boot (Windows 10 is the other OS), I am getting into Ubuntu. Whenever I tried to open Firefox, I am getting the following error: Your Firefox profile cannot be ...
1
vote
1answer
24 views

How to make Firefox show a desktop notification by running a script through it (like a website would)?

I am needing to test a bug where Firefox 47 does not show desktop notifications for the majority of the time even when a site is meant to be making it generate them (this wasn't present in previous ...
1
vote
1answer
165 views

Firefox Gstreamer vaapi

I have a laptop with not much CPU power, so I want that Firefox and Gstreamer (and maybe Rhythmbox) uses the VAAPI on my Ubuntu 15.10. vainfo gives me already the following output, so the vaapi driver ...
0
votes
0answers
55 views

Ubuntu 16.04.1 Gnome 3 — Skype login issues [on hold]

I recently installed Ubuntu 16.04.1 Gnome 3. I can't sign in on Skype.It says that It can't recognize my account info. I tried the same info on web and it works,but I can't even start Skype Beta for ...
0
votes
0answers
21 views

Watching YouTube clips on Firefox uses around 20% of CPU power

Watching 1080p videos on YouTube, using Mozilla Firefox for Ubuntu 47.0, on my notebook with i7-4700MQ CPU @ 2.40GHz × 8 and 8 GiB of RAM, running Ubuntu LTS 14.04, the Gnome System Monitor says that ...
0
votes
0answers
23 views

Google Chrome and Firefox very slow

I have a problem since I moved on Gnome3.Google Chrome and Firefox runs slow on some sites,sometimes it won't load the page or page crashes! I have this problem only on Gnome3 and I don't want to ...
0
votes
0answers
34 views

Why does Firefox 'grey-out' and stop working?

Why does Firefox 'grey-out' and stop working and then the color scheme becomes normal and resumes working? This grey-out period can last from 10-60 seconds. Hardware includes HP 8440p with 8GB RAM ...
2
votes
1answer
81 views

Continious ubuntu malfunction [on hold]

I am using Ubuntu 14.04.4 LTS and I am experiencing a lot of various persistent issues for last few months. Every of the issues is already solved here, but in my case help is always only temporary. ...
0
votes
1answer
55 views

Italicized text disappears in Firefox & Thunderbird

after a fresh reinstall of Ubuntu 15.10 Gnome, I can no longer see italics in either Firefox or Thunderbird. More precisely: in Firefox, where text is typically pre-existing, parts of sentences are ...
1
vote
1answer
21 views

Can I synchronize 2 PC's data through an external usb drive?

I have 2 computers which now runs on Windows: a laptop and a desktop. Laptop is at work and desktop home. I would like to install Ubuntu on both computers and sync them with an external usb hdd. At ...
1
vote
0answers
31 views

I cannot connect to a secure web site

I have an Intel Core 2 Duo 3.0 MHz 32-bit with 2 GB RAM. I have the latest version of Ubuntu 32-bit with the latest 32-bit versions of Mozilla Firefox and Google Chrome. If I go to a web site, like ...
0
votes
0answers
6 views

Firefox on Kubuntu 14.04 is behaving erratically

Ok, I don't know how to describe this,or if this is a Firefox or a Kubuntu issue but I will try. Also see the linked video for exactly what is happening. This just suddenly started happening where I ...
5
votes
3answers
6k views

Flash doesn't work in firefox after upgrade Kubuntu to 14.10

I upgraded Kubuntu 14.04-x64 to 14.10. Now flash does not work in Firefox. Now flash is an empty area which sometimes is black when cursor is under it. But flash still works in Chromium.
0
votes
3answers
6k views

Whatsapp Web QR code not loading on Chrome/Firefox on Ubuntu 14.04

I am trying to use the service https://web.whatsapp.com/ on Chrome/Firefox on Ubuntu 14.04 LTS (Dual boot Windows 8.1). But the QR code that needs to be scanned by the Whatsapp mobile app is not ...
-1
votes
1answer
32 views

how can I view dot bit websites in Linux? [closed]

I would like to browse .bit websites, using Firefox, or some other browser in Linux. How can I do this? I was looking at instructions on FreespeachME, but the website says it is currently being ...
0
votes
1answer
23 views

chrome does not load certain pages

Hi I have some issues on chrome, I have ubuntu 16 and neither chrome nor firefox load any pages but youtube and fb. It loads google as well but only results of search and when I enter one of them it ...
0
votes
0answers
19 views

How to tweak system for smoother running? [closed]

Have these "dark" screens alot running Ubuntu. Is there any way to tweak the system ? (I have even shut down Skype to save energy.) The photo below shows the normal system running.
0
votes
1answer
139 views

Pipelight flash plugin installation doesnt work with 16.04

I have recently installed 16.04 as a replacement for a 14.04. Reinstalling flash plugin with pipelight, I have followed the french ubuntu page for installing pipelight. Everything seems to work fine ...
2
votes
1answer
2k views

Firefox, “Bus error (core dumped)”

If I try to launch firefox I get: Bus error (core dumped) When, until last week, I had Gnome 12.04 it was the same... then, during the upgrade (I now have 14.04) Firefox started working (without ...
1
vote
0answers
26 views

Something keeps changing Firefox home page

We just installed the Ubuntu game pack and no matter how many times we change the preferences, the home page is set to ualinux.com. We even disabled the ualinux.com add-on, but it keeps coming back. ...
112
votes
8answers
75k 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!
0
votes
0answers
22 views

ubuntu 15.10 freezes after latest updates

I have ubuntu 15.10 and lately installed few updates. Unfortunately after this ubuntu freezes from time to time. Until now it always happened when browsing Internet in Firefox. I can still move cursor ...
1
vote
0answers
8 views

How do I install Unity global menu in a manual install of Firefox Developer Edition?

In Firefox Developer Edition, I'd like the title bar to change to the menu bar on hover. In about:config, the option "ui.use_unity_menubar" does not exist. I've done a manual install of Firefox ...
3
votes
4answers
22k views

Flash player (in Firefox) is unstable in 14.04

For 13.10, I used this guide to get Intel iGPU-supported playback of flash videos in Firefox: http://www.webupd8.org/2013/09/adobe-flash-player-hardware.html All in all, Intel graphics acceleration ...
0
votes
0answers
80 views

Plymouth causes multiple issues with 16.04 LTS (It's not Firefox or Chrome or YouTube freezing)

I have had to disable the plymouth running on 16.04 LTS. It caused lots of freezes on the desktop and lately also stopped my USB keyboard from working, when trying to enter the decrypt password on ...
0
votes
0answers
33 views

Chrome lags and runs up CPU usage

I have a Dell 7559 core i7 (67 machine and after spending some time I got Ubuntu 16.04 up and running. However for some reason beyond me chrome and firefox is laggy and choppy. Really frustrating!! I ...
1
vote
0answers
23 views

Firefox. Menu doesn't work, few html elements such as dropdown list don't work too

A bit of preface. I have to use 32-bit Firefox on 64-bit Ubuntu 16.04 because of Cisco Webex. Browser I got from archive: cd ~/32bit && wget -O firefox.tar.bz2 "https://download.mozilla.org/?...
0
votes
0answers
18 views

All 4 CPUs showing above 90% in system monitor

I am using Ubuntu 15.10. When I use simple screen recorder, chrome or firefox, and any text editor, in the system monitor I can see all the 4 CPUs showing 90% above usage. But if I open all these ...
6
votes
3answers
15k views

Very High CPU usage (100%) from just browsing the Web

I tested on Firefox and Chromioum. Im at 100% while loading pages which causes them to load slow and when I dont have a application running Im at 40% CPU (At least) Everything is slow basically. Im ...
0
votes
3answers
40 views

How to remove firefox installed from a debian package?

I was having some performance issues with firefox 46 so I downgraded it to previous version by removing firefox 46 and installing from an debian package of older version firefox. Later I upgraded the ...
0
votes
0answers
2k views

Error: cannot open display firefox in linux

When I run firefox in bash, I am facing this : Error: cannot open display or Error: GDK_BACKEND does not match available displays I installed xauth , xorg etc. But did not resolve my problem. I try ...
1
vote
2answers
118 views

Always hide an application's window

I'm using the selenium webdriver to run automated tests in firefox on my web applications, and while it's all working perfectly, it's a little bit annoying how firefox pops up over everything while it'...
2
votes
2answers
8k views

How to “get” system proxy settings?

I want to set proxy in my system firefox from firefox that I use by VPN. in VPN's firefox in Preferences/Advanced/Network/Settings the checkbox "use system proxy settings" is checked. where are ...