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.

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

Firefox crashes after Flash videos play with black screen

  • 4 cavab
  • 8 have this problem
  • 3 views
  • Last reply by judithmp

more options

Whenever I'm playing a video with Flash, the screen is black although the sound is playing. Then Firefox is crashing.

I'm using the newest Firefox Version (28.0) on Mac OS 10.9.2 (newer Macbook Air) and the newest Flash version. I tried Safe mode and deactivated my plug-ins to make sure it's Flash.

I re-installed Flash and installed but it didn't help.

My Firefox crash reports say "hang | libsystem_kernel.dylib@0x15a3a" under signature and "EXC_BREAKPOINT / 0x00000002" under crash reason.

Whenever I'm playing a video with Flash, the screen is black although the sound is playing. Then Firefox is crashing. I'm using the newest Firefox Version (28.0) on Mac OS 10.9.2 (newer Macbook Air) and the newest Flash version. I tried Safe mode and deactivated my plug-ins to make sure it's Flash. I re-installed Flash and installed but it didn't help. My Firefox crash reports say "hang | libsystem_kernel.dylib@0x15a3a" under signature and "EXC_BREAKPOINT / 0x00000002" under crash reason.

Chosen solution

All Replies (4)

more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.
more options

I already tried all of this. I'm sure it's Adobe Flash.

more options

Seçilmiş Həll

Did you try to disable hardware acceleration in the Flash player?

Flash "Display settings" window:

more options

Thanks a lot! Finally this solved my problem! I thought you meant hardware acceleration from the general settings in Firefox. I already tried disabling the hardware acceleration in the Flash player before but wasn't successfull because the video had been crashing before I was able to access the settings. But now I was. :)