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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11 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 ...
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4 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 ...
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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 ...
6
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2answers
562 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 (...
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0answers
21 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 ...
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0answers
17 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 ...
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0answers
18 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 ...
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0answers
42 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 ...
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0answers
33 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 ...
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0answers
29 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 ...
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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 ...
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votes
1answer
31 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
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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 ...
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0answers
17 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.
1
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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. ...
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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
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0answers
7 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 ...
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0answers
28 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 ...
1
vote
1answer
22 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 ...
-3
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0answers
30 views

Cannot load websites in Fire Fox on Ubuntu 12.04 [closed]

I am a teacher.I am using Ubuntu 12.04.My FireFox version is 47.0. I cannot load the website for two weeks. Please help me solve this problem.
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0answers
69 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
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0answers
31 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
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0answers
22 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/?...
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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 ...
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3answers
37 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 ...
2
votes
2answers
113 views

adobe-flashplugin package is virtual

Trying to install flash on Ubuntu Mate 16.04, I went to https://apps.ubuntu.com/cat/applications/quantal/adobe-flashplugin/ thinking I could find the package there. Instead I got a cryptic message: ...
13
votes
3answers
843 views

How to disable HTTP referrer in Firefox?

I feel that the HTTP referrer is a violation of my privacy (the HTTP header field that identifies the webpage you just came from which was linked to the webpage you are going to) and I understand that ...
1
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0answers
54 views

Lubuntu 16.04 - Firefox not working

I have this issue being novice in Lubuntu. I cannot access Internet because Firefox keeps on telling me this: ''Your connection is not secure''. It shows two icons - Go back - Advanced. I have not ...
1
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0answers
25 views

Java doesn't work (IcedTea )

I installed IcedTea Plugin on Ubuntu 14.04 LTS using Firefox. I receive this error message: Problem initializing runtime environment. Changing the SecurityManager is not allowed. I am not very ...
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0answers
27 views

Java from Oracle firefox update

I'm running on a ubuntu 14.4. I update the java version from Oracle website following their instruction Right now the java version installed on my computer is "1.8.0_91". I made a simbolic link on ...
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
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2answers
37 views

I broke Firefox with bad changes in 'about:config', how do I restore the defaults?

I have been experimenting with the about:config settings of Firefox 47.0 on my new Xenial installation. This unfortunately has left Firefox broken. I have read how to search through about:config to ...
4
votes
3answers
79 views

Mozilla (thunderbird an/or firefox) crash, bringing chrome down with it

Symptoms: Firefox and Thunderbird crash intermittently, usually followed by chrome. Once the crash happens, restarting will result in another crash almost immediately, until the system is rebooted. ...
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1answer
45 views

Firefox will not permit me to change the default search engine

I just updated my computer and made sure all packages are up to date, but Firefox will not allow me to change the default search engine for the search box with the latest version of Firefox from the ...
0
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1answer
21 views

Deleting standard browser [duplicate]

Is there any difference between this command: apt-get purge firefox and these 2 commands: sudo apt-get remove firefox && sudo apt-get autoremove
1
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0answers
12 views

Autoscroll in Firefox off-centered

I enabled the autoscroll feature in firefox but it is not working as expected when I hold and drag the middle mouse button. If I click the middle mouse button and move up or down, the center of the ...
2
votes
0answers
43 views

Firefox file dialog doesn't see cryptomator volumes (vault)

I have ubuntu 16.04 with firefox (47.0) and cryptomator 1.1.0 applications installed. On my machine has one cryptomator volume (known as vault) mounted and it's not visible to any firefox file ...
1
vote
1answer
94 views

No Sound on Firefox or Chrome, Kubuntu 16.04

Amarok works fine, system sounds, local videos... but I get no sound in Firefox or Chrome on Youtube. I even tried installing flash plugin for Firefox instead of HTML5, STILL no sound. I really have ...
7
votes
2answers
340 views

Enable backspace to go to the previous page in Firefox [duplicate]

I want to enable or use Backspace to switch back to previous page that I visited previously in the Firefox browser on Ubuntu. For example, if I am using any browser on Windows, I can use Backspace ...
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0answers
24 views

1 site saying need adobe flash installed but it is installed? [duplicate]

I have adobe flash plug in form the software center, can watch vieos and load other game sites but 1 site says need adobe flash player installed. Have checked playing from anoth ubuntu systems ...
0
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0answers
40 views

Speed up firefox/chromium immediately after startup

After startup, starting applications like firefox or chromium takes time, but after ubuntu has been running for a while, it comes almost immediately. Is there any way to speed up opening firefox ...
0
votes
1answer
41 views

Firefox not launching, Ubuntu 16.04

I installed firefox using the default applications installer. I have tried several times to launch it, but it starts and doesn't launch. I tried launching from terminal and it comes back as Gtk-...
1
vote
1answer
44 views

Ubuntu touch: webcams in firefox? Aquaris M10

I have an Aquaris M10 with Ubuntu Touch fresh-out-of-the-box (kind of) here, and I can't get any page with a webcam to show in firefox. Try out http://webqr.com to see. webqr reports an issue saying ...
3
votes
2answers
78 views

UI Font Size in Firefox, Opera, Chromium and Thunderbird Disregard System Settings

I don't know why but all 4 applications are not following the font size set in system settings. Any clues?
2
votes
0answers
24 views

Typed characters disappear when moving mouse (Firefox/Rikaichan/IBus-Mozc)

Characters sometimes disappears on Firefox: Enable IBus-Mozc to type in Japanese Type g Type a. The character が appears. Don't type Enter. Move the mouse The character disappears I would report a ...
1
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0answers
17 views

WebGL not working

I have Ubuntu Mate 15.10, and Firefox 44, and I am trying to play eyewire from eyewire.org. Persistently I get errors. I have tried modifying the WebGL options in about config to force webGL to run, ...
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0answers
7 views

How can I find out why/how Firefox under Kubuntu 16.04 allows cookies from sites I have blocked?

I have blocked the site exactly as how the domain is specified in the cookie itself. I have also blocked the domain with a wild card. Still it is able to create cookies in my browser. How can I ...
0
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0answers
102 views

Firefox + streaming video (m3u8 playlist)

I'm running a fresh install of Ubuntu 16.04 with Firefox 47. I'm finding that streaming HTML5 video does not play inline in the browser when a <video> tag is used that specifies an m3u8 ...
2
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0answers
51 views

spaces affect the firefox commands in terminal [closed]

firefox -private & This command open private browsing . but the same command firefox -private& without space between ampersand and the -private option will only open normal browsing ...
1
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2answers
133 views

ubuntu 15.10 firefox 47 java plugin weirdness

I have just updated my system to use oracle java 8 build 91 (latest and greatest) and can't get the firefox plugin to work. Every time I try to verify it, it crashes. When I tried the approved ...