Firefox 技術支援討論區

I'm on Ubuntu 22.04 which is using the snap package of Firefox.

It seems that I cannot open local files in the /tmp directory. When I place a test.html file there and run `firefox /tmp/test.html`, it returns a file not found error. Why?

I don't have the problem with files in my home directory.

Whenever I use web-applications that use WebGL or anything similar, they are always distorted. And yes, I have tried disabling Performance Settings, but that only slightly helped.

I haven't used my microphone in Firefox in years. I tried today, logged into Google Voice, which tells me it can't access the microphone. I set permissions in Firefox's settings. I turned up all the mic settings in alsamixer. I tried https://mdn.github.io/web-dictaphone/ , recommended in another thread here, and it doesn't record either. I can use the microphone outside X, with sox's rec. I also can't record a new greeting in Google Voice.

Firefox 100.0.2 , Linux, Slackware 64-bit, all packages updated this morning.

In my Bookmarks Toolbar I have created a Folder, 'News' and placed it at extreme left, next to the 'Show Your Bookmarks'. By clicking on the 'News' Folder I can see and select any of my favorite Web news sites. Very handy. Today, however, when I clicked on the News folder my 73-year-old hand accidentally dragged the News folder on top of the 'Show Your Bookmarks' icon and the News folder disappeared !! I can't figure out where it went !! Help !!

Using Firefox 100.0.1. Debian Linux. Dell 1525 with 4G ram.

When playing a certain mp3 file in the browser, if I use the arrow keys, or the mouse, to skip forward or back, there is no response, but the audio stops playing for a period of time, then, finally it starts playing again at the spot it was before.

This does not happen with this file in Chrome, or in VLC. Also, with other mp3s it does not happen in Firefox.

I finally got it to work by converting the file to ogg vorbis, but this is not something I want to make a practice of..

I imported the file back into Audacity, and re-exported it as an mp3. Same result.

Weird... Any ideas?

Thanks,

Hi,

I use Mendeley Web Extension to pull articles and other things from Firefox directly into my Mendeley library. I will usually rapidly read through the PDF file online before deciding to add it or not. For some unknown reason, Firefox blocks the use of Mendeley on PDF file, for security reasons, and I can no longer add them to my library. Most references are only available as PDF files making the add-on completely useless. Is there a security feature that I can disable to be able to use the extension again?

Kind regards,

Mathias

When entering full screen mode it's only inside selected window. Also affects youtube player. Pictures when in full screen mode (using F11 key): https://imgur.com/a/gp3yqCC

When I am typing an address or search term in the address bar, something happens to convert fl to "I. For example, as I type netflix.com, it ends up being net"Iix.com. The address still works (I end up on netlfix) but it looks like there is a bug in how the text is rendered in the address bar. I am on Firefox 100.0.2 on openSUSE Tumbleweed

I know there's [[an article|https://support.mozilla.org/en-US/kb/sync-custom-preferences#w_sync-custom-preferences]] on how to sync custom preferences. I wanted to sync my toolbar customizations and some other preferences like disabling disk caching. And I don't even have other firefox instances, instead I just want to sync only on one device, so that I can continue the same setup when I signin later on the same device.

I've tried to add services.sync.prefs.sync.browser.uiCustomization.state, "services.sync.prefs.sync.browser.cache.disk.enable" and set it to true. But it doesn't work. What am I missing? No one seems to address this. May I am missing something.

Generic Firefox 101 in Linux Mint Cinnamon 20.3 is installed in the /opt folder and on opening Firefox a activates a redirect page is activated.

[url]https://www.mozilla.org/en-US/firefox/new/?redirect_source=firefox-com./url

How can I get rid of it?

The problem is : Some of the time FF just records 0 bytes file and says nothing. I suspect that FF inspect the URL of the links and discard ( perhaps for security reason ) ones that do not begin with HTTP.

The bypass is : One has to copy the link and insert in in the new page of FF.

The solution would be to change FF code.

Thank you.

There is a specific challenge that i am facing with Firefox and some of the solutions that i have tried is not helping me to resolve the issue.

What's the issue: There are double spaces issue in Firefox

Where is it : 1) Menu 1.1) It's in the Menu New Tab is seen to me as New Tab (more spaces are for demonstration only) 1.2) All the Menu items which have space are show with more then one space including

  1.2.1) File Menu -> New   Window (and all the drop down menus with spaces)
  1.2.2) Edit Menu -> Select     All (and all the drop down menus with spaces)
  1.2.3) View-> Page     Style (and all the drop down menus with spaces)
   1.2.4) All the rest of the menus where ever there is a space there is a double space

2) URL : I type something in the URL and they are double spaced "this is test" will look like "this is test"

   THIS URL looks to be double spaced on firefox https://support.mozilla.org/en-US/questions/1338204?page=2
   like below

3) Numbers in the browser :

   Any number displayed is double spaced in the browser output (most of the times, most of the web pages)
   
   

4) Bookmarks : All bookmarks are double spaced

5) Settings:

Settings: I have tried some suggestions below and they did not work for me.

browser.proton.contextmenus.enabled browser.proton.contextmenus.enabled is still set to false but seems to have no effect toolkit.legacyUserProfileCustomizations.stylesheets=true browser.proton.contextmenus.enabled=false

6) Reference: I have tried some suggestions below and they did not work for me.

 https://support.mozilla.org/bm/questions/1350754
 https://support.mozilla.org/en-US/questions/1186601
 https://support.mozilla.org/en-US/questions/1338204?page=2
 https://superuser.com/questions/1654597/firefox-menus-became-double-spaced-in-latest-update-i-want-to-return-to-single

Hi all. Did a search but found nothing that helped. Just updated my Fedora 36 workstation and tried to play videos in CNN and MSNBC web sites and get the error message: "Code: 4 | Message: Something went wrong during native playback." I am using the latest Firefox WEB browser. UTube videos are playing fine. Someone has stated on the Fedora forum that they have the same problem but has no problem in Chrome on the same machine. Any ideas? Thanks in advance. Bob BTW, this happened in two machines running Fedora 36 and Firefox 101.0.

I was using Firefox on windows 10 laptop, everything was synced with my account. Now after switching to Ubuntu I can't see my bookmarks, Just an empty toolbar. Now I don't have access to my old laptop, I sold it.

Any help?

Whenever I attempt to access DRM content such as netflix or spotify I am notified that the WidevineCdm plugin has crashed. I'm running firefox version 101.0.1 on Kubuntu 22.04, I am running the debian package release, but I had this issue with the snap version too. I've submitted crash reports, but they're all "EMPTY: no crashing thread" (https://crash-stats.mozilla.org/report/index/20af09a5-6bc4-4719-9242-38f5c0220614 here's one).

Firefox says I need a video codec to play a video (that is aparently somewhere on the page). It does NOT tell me what video, what video format, or what codec I need. How do I find out what codec I need?

Firefox version: 101.0 (64 bit) OS: Fedora 36

I am trying to download a spreadsheet file which has a .xlsx extension. Firefox insists on downloading the file (my default action) but I want to be given the option to open in my spreadsheet program (Libreoffice).

Looking in Settings and scrolling down to Files and Applications -> Applications, there are other spreadsheet formats present but not one for .xlsx. How do I add the "Always Ask" option for .xlsx files?

Libreoffice is the default system application for opening these files.

Firefox allow to disable access to canvas for lowering fingerprinting, it's cool !

But as web developer : i like to ask this access before try to using it,

Something like :

1. Do you alllow canvas ? 2. Show the browser part 3. Wait for user answer 4. It's OK : download PDF done with canvass 5. It's not OK : shown an error to user.

To avoid such situation (see screencast)

For some reason, whenever I load a pdf from within Firefox, I get a new tab with the regular toolbar displayed on top of pdf files, but the document itself is completely blank (see attached screenshot). This issue just started today and I assume it was a result of an update, since I don't recall making any changes to my settings (I'm using Firefox 101.0.1 on Ubuntu 20.04).

I've tried opening multiple files from a variety of sites with the same result. All of them open fine using my system's pdf viewer, as well as from within Chromium. I've tried disabling my plugins, putting Firefox into safe mode and resetting all the handlers, to no avail. Any help would be much appreciated.

browser.sessionstore.resuming_after_OS_restart = false. My browser still restores on os restart. Startup -> Restore previous windows and tabs is unchecked browser.sessionstore.max_resumed_crashes = 0 browser.sessionstore.restore_on_demand = false browser.sessionstore.resume_from_crash = false

I do not and will not manually close my browser session every time I want to shut down my computer in order to get it to do what it's supposed to. Linux sends SIGTERM to all running processes on shutdown. Firefox isn't handling this correctly, obviously, because if it was, then my settings would be getting respected. SIGTERM is the standard signal sent to windows that need to close gracefully and are expected to still be functional.

NOTE: Do not provide windows-specific support to this thread. I am not running firefox on windows, and I do not possess a windows computer or license.