Firefox Support Forum

Dear mozilla community,

I cannot get firefox to start, and I need help to troubleshoot this. What I already did:

• remove and reinstall (apt)
• rename ~/.mozilla to trigger recreation
• start using the command line
• start in safe mode

The only symptoms are <defunct> processes (see screenshot).

I need more information to find out what went wrong. Where can I find this?

Details

• apt
• firefox_78.0+build2-0ubuntu0.16.04.1~mt1_amd64.deb
• Linux Mint 18.3 Sylvia

In my settings I have Firefox set to open PDFs using the app 'okular' (see screenshot). In my file browser, PDFs open in 'Okular' (see screenshot). However, when I click a pdf in the Firefox downloads pane, it opens with 'GNU Image Manipulation Program'. Why is this, and how can I change it to 'Okular'?

I'm running latest version of Kubuntu, with current updates.

Ubuntu 16.04, Firefox 59.01, fresh install. No bookmarks toolbar available. When going under customize, click the toolbar bitton, nothing shows up. This is consistent with three fresh installs. I prefer having the tool bar readily available, preferably under the "view" "toolbars" menu. Need the bookmarks toolbar. I can't figure out why that was changed!

Whenever I end up browsing online with Firefox, from time to time, Yahoo Answer crops up with no warning and is not even installed on my system nor is it an add-on, I am wondering if Yahoo Answer Browser is actually a virus interfering with peoples experience online and if it is being deliberately done by those who run Yahoo. As it has hampered me on many occasions with the research I am doing. Asking me to sign up for a network I quit over 10 Years ago of the problems it caused back then, its also why I switched to Mozilla Firefox, which is much more stable.

https://uk.search.yahoo.com/yhs/search;_ylt=AwrIRlnFD35asAUAIZZ3Bwx.?p=help+on+getting+rid+of+unwanted+Yahoo+Answers+Browser&fr2=sb-top&hspart=ddc&hsimp=yhs-linuxmint&type=__alt__ddc_linuxmint_com.

This is why I feel Yahoo Answer has become an internet virus, it is everywhere where you do not need it.

when i get ready to click the icon with the fox on it, i have to go to the top button with the ubuntu logo and click & show apps, the first one is the firefox globe, i click on it & it goes to my sidebar & gets me online! when i logoff it goes away, and i have to retrieve it again! it's suposed to stay?

Hello, I always download mp3 files inside webs using "Save as" and ".mp3" method. Sometimes I had to explicitly save filename with ".mp3" extension to force audio download. However trying to download an audio no matter what format I write in file always download only webpage as .html never as .mp3. Looking at sourcecode (image attached) I found a detail containing "chrome" in webpage. Later, I tried downloading with Chromium at it worked properly. Does anyone know how to download this from Firefox?

Thanks in advance for your help. P.D. I am using Firefox 84.0.2 (64-bit) for Ubuntu canonical - 1.0.

Many preferences don't sync, and it is sooo annoying to change them again every time I log in into a new Firefox instance. Can you please get more options to sync, such as the ones mentioned in the title?

Related to this, extensions that are installed not for the first time should not open new tabs (or at least an option should exist for this). And the preferences from the extensions themselves should also be synced.

When i try to use Page Up or Page Down, or Cursor Arrow Keys on the keyboard, a webpage may go from top to bottom for example! When then attempting to page up, it goes up 1 page and then back down to bottom of page.

To compound the annoying problem, there is no Down Arrow at bottom of scroll bar. So we have to click and drag the scroll bar up and down to view a webpage. This is not normal behavior and we can't figure it out. It could be a setting we need to correct, but we don't know which one it is. (see comments below on requesting the PDF printout of FireFox settings)

Could someone please help us ... and perhaps it can help others as well. We could not find such a problem amung your "help topics".

Thank You!

While using Ubuntu 18.04.03 LTS and FF 71 When I go to www.Pluto.tv a free TV site and leave it running for about 40 minutes or more the message " a script on this page may be busy" this always happens both on Ubuntu and another Linux system. this problem does not occur on my Mac OS. the problem when left alone the CPU goes very high on the Linux system preventing any usefull usage of FF until it is closed and reopened.

The message that pops up suggests FF is interuppting something incorrectly. Anyone with a suggestion to stop this problem? Keeping in mind FF plays with no flawas for more than 40 minutes

I'm using Ubuntu 16.04 and after the latest update I ran on Firefox, loading a webpage left me with a white screen/page in the browser. I removed Firefox, reinstalled, started it up and had the same results. After that, I removed the ~/.firefox folder, supposedly containing user and browser settings that are kept. This fixed the browser, but I noticed my laptop fan working at full speed. I opened the System Monitor and saw that a core is running @ 100%. I'm attaching two screen shots of this, opening 2 tabs (facebook and soundcloud) and keeping them open. After closing the browser the processor goes back to idle. I'm wondering whether someone could help guide me.

Best Regards

The profile folder on the new installation is to be replaced with that from the old. So far so good, I've copied the profile folder from Windows and now want to exchange it for the profile folder on the new Ubuntu computer. Problem is that this is the very latest Ubuntu version (only a few weeks old) and there IS no profiles folder in Firefox!

What there is, is a profiles.ini file but I am reluctant to put it in there because it does not appear to have anything to do with the contents of the ex-windows profile folder.

There is an option to create a new folder but I'm not at all sure what this would do.

Hope you can help

Blessed be Karma

As you can see in the screenshot, there's this black spacing between tabs area and top of the browser. How do I remove it so that the tabs are right at the top, and I get to see entire sites without compromise in screen space? This is in latest version of Ubuntu. Thanks.

Good day, there is such a question, is it planned to release (or port) a Firefox browser for Ubuntu Touch? Unfortunately, the only browser available is "Morph", and it does not meet the requirements of many UT users. I'd love to see your browser on this platform, as convenient as for android and ios. Regards.

I just upgraded to Ubuntu 18.04 and neither Firefox or Thunderbird will connect to the internet. I can ping 8.8.8.8 just fine. I turned off the firewall and they still will not connect. They connected just fine before the upgrade. I changed the proxy to no proxy and system proxy. Still no luck. What am I missing?

How do I make the toolbars smaller? Since upgrading to the latest version, they are twice as tall as they used to be. The text in them is still a reasonable size but the toolbars take up twice the vertical space they used to. This has nothing to do with the size of the page I'm viewing so Ctrl+ or Ctgrl- has no effect.

Thanks for any help. Attached is a screen shot showing the wasted space at the top of my screen with the new toolbars.

Recently getting problems using mixcloud.com

Re-post, Comments and Follow are no longer working. I have tried in safe mode but no luck and can confirm it works fine on Chromium.

Firefox 64 Ubuntu 18.04.1 LTS

This sounds more like an issue with Microsoft but it probably isn't because other browsers like Google Chrome doesn't have this issue. The domain "attachment.outlook.office.net" is unreachable/unresolvable in Firefox (58 and earlier versions) in Ubuntu 17.10 64-bit. All the attachments that are delivered with Outlook are hosted in this domain and whenever I check Outlook e-mails using Firefox in Ubuntu the attachments are unavailable. They are there in the e-mails, sort of, but they are shown like shortcuts that don't lead to anything.