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Udemy is not playing videos

Hi, The version of Firefox 68.9 on Linux CentOS 8.2 has problem playing videos from https://www.udemy.com Testing on macOS and Windows 10 the Udemy Courses are presented … (閱讀更多)

Hi,

The version of Firefox 68.9 on Linux CentOS 8.2 has problem playing videos from https://www.udemy.com Testing on macOS and Windows 10 the Udemy Courses are presented fine. I get dark video.

joseluisbz 於 1 年前 詢問

James 於 1 年前 解答

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Ubuntu Linux: No sound at all in Firefox 65.0.1

All other apps (like Chrome, Spotify, and audio configuration sound test) sound fine. I've tried -safe-mode, re-installing, and removing duplicate Flash plugins. My /etc/… (閱讀更多)

All other apps (like Chrome, Spotify, and audio configuration sound test) sound fine.

I've tried -safe-mode, re-installing, and removing duplicate Flash plugins. My /etc/hosts file is Xhosts, I've cleared the cache, pulseaudio is running, all pop-ups are allowed,

Description: Ubuntu 18.10 Codename: cosmic Linux Who 4.18.0-16-generic #17-Ubuntu SMP Fri Feb 8 00:06:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux buster/sid GNOME Shell 3.30.2

For sound-test I've used both of these in both Chrome and Firefox: http://camendesign.com/code/video_for_everybody/test.html https://www.youtube.com/watch?v=Lo01PcgxHMU

Thanks, 
    Warren (fredistic@gmail.com)

PS: The "Automatically add" green button below only brings up a page that says it's lost.

OldReliable 於 2 年前 詢問

davidspriggs 於 2 年前 解答

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How to use Java applet in Linux

Hi all, am using Debian linux with Firefox 60.8.0esr (64-bit). I know the whole spiel about Firefox not supporting java applets any longer, but I have some old IoT devic… (閱讀更多)

Hi all, am using Debian linux with Firefox 60.8.0esr (64-bit). I know the whole spiel about Firefox not supporting java applets any longer, but I have some old IoT devices that i need to get configured and they use a java applet for some portions of the configuration. I understand Firefox ESR 52 still supports java applets, and i've downloaded version 52.9.0esr and extracted it to its own location. Now i can start it without interferin with my v60 profile by running it like: "./firefox --no-remote --profile ." I had to go into options and turn off the automatic update because otherwise it updates it to v60. Then I downloaded jre-8u221-linux-x64.tar.gz and extracted that. Now the question is how do i get the plugin installed into the Firefox v52? thanks

taka 於 2 年前 詢問

cor-el 於 2 年前 解答

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Firefox is not opening correctly

Hi today I opened my linux installation and Firefox is only getting a window with the text: <toolbarbutton id="UITourTooltipClose" class="close-icon" <… (閱讀更多)

Hi today I opened my linux installation and Firefox is only getting a window with the text:

             <toolbarbutton id="UITourTooltipClose" class="close-icon"
</pre>

I tried to run from the console with the --MOZ_LOG_FILE flag and the generated file has absolutely no text in it.

Some information about my system: kernel: Linux localhost.localdomain 5.7.7-1-default #1 SMP Wed Jul 1 19:03:27 UTC 2020 (cba119b) x86_64 x86_64 x86_64 GNU/Linux

OS: openSUSE 20200715

DE: KDE 5.72.0 / Plasma 5.19.3

Version: 78.0.2-1.1 (according to zypper info MozillaFirefox command)

Gresthol 於 1 年前 詢問

FredMcD 於 1 年前 解答

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All http sites are redirecting to https and display "potential security risk ahead" error

In my browser whenever I am opening non secure sites that are only like http://example.com it redirects to https://example.com and display the error. "Warning: Potential … (閱讀更多)

In my browser whenever I am opening non secure sites that are only like http://example.com it redirects to https://example.com and display the error. "Warning: Potential Security Risk Ahead" error. I could not know how to fix this error. This is happening all of a sudden. I could not find a way to fix this error.

vpp.nagaraju1234 於 1 年前 詢問

vpp.nagaraju1234 於 1 年前 解答

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New install of Ubuntu, Firefox menu bar is missing.

I have a new machine with a new install of Ubuntu 12.04. In Firefox the menu bar is missing. I have the black border with 3 buttons in the left and the current page title… (閱讀更多)

I have a new machine with a new install of Ubuntu 12.04. In Firefox the menu bar is missing. I have the black border with 3 buttons in the left and the current page title. I also have a tabs bar and toolbars. I've looked in the forum/help and tried the suggestions there, here's what happened:

If I right-click the tab bar, the only toolbars shown in the drop-down menu are Navigation, Bookmarks and Add-ons, so I can't show the menu bar that way.

I don't have a Firefox button.

I've tried creating a new toolbar and moving all buttons except the address field and google search across in case it was a lack of space on the toolbar but that didn't help.

I can't reset the profile as I don't have a help menu.

I've re-installed Firefox and there was no change.

Does anyone have other suggestions please?

Tim

TimEarl 於 9 年前 詢問

Marc Sances 最近回覆 於 9 年前

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How to disable automatic updates in version 65

Can't find the option to disable auto updates in version 65. One of the reasons I haven't updated to the latest version. If it can't be disabled, I'll be done using you… (閱讀更多)

Can't find the option to disable auto updates in version 65. One of the reasons I haven't updated to the latest version. If it can't be disabled, I'll be done using your browser. I stopped using Microsoft Windows precisely because of that behavior. There is nothing more annoying than using your browser and it says, "I can't do anything without a restart." and being presented with a restart button except that when you click the restart button, the browser closes. It never restarts.

I want control over my own computer. I want control over whether this updates or not. I've been doing this longer than you and I'm an IT professional. This can be done a whole lot better.

I'm keeping all of my other machines at 64 pending an answer to this question. Very disappointed that I may have to find a different alternative browser not based on google code.

Curtis Maurand Firefox user since before it was called firefox

cmaurand 於 2 年前 詢問

cmaurand 於 2 年前 解答

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Buffer full video or make buffer bigger

Hi all, so since a few versions I have noticed a difference in video buffering. Firefox now buffers a very small amount of a video, like it does when mediasource extensio… (閱讀更多)

Hi all, so since a few versions I have noticed a difference in video buffering. Firefox now buffers a very small amount of a video, like it does when mediasource extensions are turned on. I did turn them off however so videos were usually downloaded automatically all the way, which was very convenient for me, instead of just when you play the video the next few seconds. This doesn't work anymore as if I enabled mediasource extensions and every video used it.

Is there some way to revert that behaviour? I guess it was done out of performance reasons. How can I change it back, e.g. make the video buffer bigger?

Thanks a lot

Unrealshade 於 4 年前 詢問

Oloferno 於 4 年前 解答

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89.0b2 Revert new tab design

Today I updated my Firefox Developer Edition to version 89.0b2 and now I just can not look at this browser anymore, "Inspired new tab design" is taking too much space and… (閱讀更多)

Today I updated my Firefox Developer Edition to version 89.0b2 and now I just can not look at this browser anymore, "Inspired new tab design" is taking too much space and now became largest and at the same time least information-dense panel in my entire desktop! I searched around the web for a bit in hopes that I will find a theme or an add-on that will revert this particular change but no luck. I really want to revert to old UI look (at least tabs bar), there should be default theme or option to get back to old style. After some investigation I found userChrome.css but don't really want to install it (maybe this is actually the way of doing this kind of styling). Please help me revert UI design to old one.

PepeTheFrog21 於 5 個月前 詢問

TerryN21 於 5 個月前 解答

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Add ons not working or showing up

I am running Firefox 76.0.1 on GalliumOS 3.1 on a Lenovo N21. For some reason, my add ons don't show up or work, even though they are installed. Firefox works great on … (閱讀更多)

I am running Firefox 76.0.1 on GalliumOS 3.1 on a Lenovo N21. For some reason, my add ons don't show up or work, even though they are installed. Firefox works great on my other two machines, and used to work great on this one. Thank you Jason Stone.

jasonstone20 於 1 年前 詢問

AKASH kUMAR 於 1 年前 解答

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Spellcheck not working/options missing.

I recently updated to 20 and my spellcheck context menu has vanished. What if you aren't even given the check spelling or languages menu option yet the broken red line un… (閱讀更多)

I recently updated to 20 and my spellcheck context menu has vanished.

What if you aren't even given the check spelling or languages menu option yet the broken red line under mispelled words occurs and no spelling suggestions made when right clicking on those words?

Some additional information:

In my about:config i do have the following in bold: spellchecker.dictionary;en-US user set string en-US

https://developer.mozilla.org/en-US/docs/HTML/Controlling_spell_checking_in_HTML_forms?redirectlocale=en-US&redirectslug=Controlling_spell_checking_in_HTML_forms

(I want spellechecking EVERYWHERE, how do I implement that?)

Also there is this: http://trac.xinha.org/ticket/1119

I do not have xinha installed but the behavior is similar. I get the lines, but no options.

Innomen 於 8 年前 詢問

Hairy Scot 最近回覆 於 8 年前

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in Firefox 17 for linux the installation folder has changed from mozilla to firefox and the plugins folder is missing from the 64 bit installation under RedHat.

I need to install an older version of Java on my Redhat 5 Enterprise workstation. Since Firefox 17.0.5 the installation folder changed from /usr/lib64/mozilla to /usr/lib… (閱讀更多)

I need to install an older version of Java on my Redhat 5 Enterprise workstation.

Since Firefox 17.0.5 the installation folder changed from /usr/lib64/mozilla to /usr/lib64/firefox. In the 64 bits version, there is no plugins folder, is that normal?

When I create the missing plugin folder and that I install the java plugin in it, it does not appears in the plugins list.

The 32 bits installation is working though ( /usr/lib/firefox/firefox ).

louismc 於 8 年前 詢問

mdalvecc 最近回覆 於 8 年前

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How to remove JW Player?

Same problem as posted here: https://support.mozilla.com/en-US/questions/765885 Can't find a way to uninstall/disable/avoid JW Player loading flash content. … (閱讀更多)

Same problem as posted here: https://support.mozilla.com/en-US/questions/765885

Can't find a way to uninstall/disable/avoid JW Player loading flash content.

nkent001 於 10 年前 詢問

nkent001 最近回覆 於 10 年前

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command line parameters for firefox

I am running program which open "chromium-browser" with following command-line parameters in Linux. --incognito = Causes the browser to launch directly in incognito mode.… (閱讀更多)

I am running program which open "chromium-browser" with following command-line parameters in Linux.

--incognito = Causes the browser to launch directly in incognito mode. ↪

--no-first-run = Skip First Run tasks, whether or not it's actually the First Run. Overridden by kForceFirstRun.

                   This does not drop the First Run sentinel and thus doesn't prevent first run from occuring the 
                   next time chrome is launched without this flag. 

--disable-save-password-bubble

--password-store = Specifies which password store to use (detect, default, gnome, kwallet). --password-store=basic

--no-default-browser-check = Disables the default browser check. Useful for UI/browser tests where we want to avoid having

                               the default browser info-bar displayed.

--window-size = Specify the initial window size: --window-size=w,h --window-size=1024,1024

--app = Specifies that the associated value should be launched in "application" mode.


Now I want to do the same thing with "firefox" browser. I need help to find firefox command-line parameter for firefox which is similar to chromium-browser.

I searched firefox website but not able to find alternatives for same.

Thanks in Advance.

manojpalhade 於 5 年前 詢問

manojpalhade 於 5 年前 解答

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"Couldn't load XRE functions" when starting FF 18.0, Linux.

just installed FF 18.0 on Linux (Centos 5.8) where 17.0.1 has been running fine. I always install in a local (to my login) directory, and have a desktop launcher to start… (閱讀更多)

just installed FF 18.0 on Linux (Centos 5.8) where 17.0.1 has been running fine.

I always install in a local (to my login) directory, and have a desktop launcher to start it. I download each .tar.bz2 FF package to a subdir, where I unpack it, overwriting whatever was already in the firefox directory in that location.

doing that, I get the error above. so I renamed the directory and did a fresh extraction into the firefox directory that tar creates when unpacking the archive. SAME PROBLEM.

moving that directory aside and re-extracting the 17.0.1 archive yields a working Firefox.

What can I do to solve this problem?

the troubleshooting info below came from FF 17.0.1, since FF18.0 doesn't work.

fredex 於 8 年前 詢問

fredex 最近回覆 於 8 年前

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After a refresh, almost all https sites give NS_ERROR_NET_INADEQUATE_SECURITY

It is not giving me an Advanced button or an "I know the risks" button, or any other way to respond. Among the sites that won't load is mozilla.org. This is what the win… (閱讀更多)

It is not giving me an Advanced button or an "I know the risks" button, or any other way to respond. Among the sites that won't load is mozilla.org.

This is what the window says when I try to visit almost any https site:


Your connection is not secure

The website tried to negotiate an inadequate level of security.

www.mozilla.org uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The website administrator will need to fix the server first before you can visit the site.

Error code: NS_ERROR_NET_INADEQUATE_SECURITY


I looked at the troubleshooting information, "Important Modified Preferences", but there were no security.* preferences mentioned, or any mention of SSL/TLS.

I tried refreshing again but same result.

Oddly, app.napster.com loads OK (but I can't get it to play any music).

Using 57.0.1, 64-bit, Fedora 27, Linux kernel 4.14.8.

Blob2 於 2 年前 詢問

Blob2 於 2 年前 解答

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How to hide firefox scroll bar ?

as the title says, i would like to hide scroll bar in firefox. I've searched the internet and found the following solution https://support.mozilla.org/en-US/questions/95… (閱讀更多)

as the title says, i would like to hide scroll bar in firefox. I've searched the internet and found the following solution https://support.mozilla.org/en-US/questions/957337 but it seems not working anymore Firefox version that i use is (Nightly 61.0a1 (2018-05-04) (64-bit))

as3mbus 於 3 年前 詢問

cor-el 於 3 年前 解答