This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thread ini telah diarkib. Sila tanya soalan baru jika anda perlu bantuan.

Youtube video is black when in fullscreen

  • 3 balasan
  • 2 ada masalah ini
  • 1 paparan
  • Balasan terakhir oleh min.karma

min.karma
min.karma
more options

When playing any youtube video in full screen, all I get is a black screen. Issue does not appear in private mode, firefox developer build or chrome. Other sites ex. go pro media plays videos in full screen without any problems

When playing any youtube video in full screen, all I get is a black screen. Issue does not appear in private mode, firefox developer build or chrome. Other sites ex. go pro media plays videos in full screen without any problems

Penyelesaian terpilih

Reinstalling nvidia graphics drivers (even though I was on latest version) fixed the issue

Baca jawapan ini dalam konteks 👍 0

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
min.karma
min.karma Pemilik Soalan
more options

cor-el said
Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.
  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window

Thanks for your reply! Tried running it in troubleshoot mode with no luck. Currently have no extensions enabled and toolkit.legacyUserProfileCustomizations.stylesheets setting is set to false. The theme is set to System theme - auto

Also clearing cookies/cached content didn't do anything

Diubah oleh min.karma

min.karma
min.karma Pemilik Soalan
more options

Penyelesaian Terpilih

Reinstalling nvidia graphics drivers (even though I was on latest version) fixed the issue