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

This thread was archived. Please ask a new question if you need help.

Firefox 29 crashes Mac when placed in external monitor

  • 1 reply
  • 3 have this problem
  • 5 views
  • Last reply by cor-el

mford23
mford23
more options

I am using MacBook Pro Retina, 15-inch, Late 2013 with OS X 10.9.3.

Have used Firefox for years, but when I received Firefox 29, I started having issues with my Mac having full crashes. Through trial and error, I isolated that it only occurs after I have moved Firefox into my external monitor. After Firefox is in the external monitor, moving any other application to or from the external monitor results in a crash maybe 1 out of 5 attempts. I have tried connecting to a different monitor and I have tried both the HDMI port and the Thuderbolt to DVI connector on the Mac with the same crash still occuring.

I am using MacBook Pro Retina, 15-inch, Late 2013 with OS X 10.9.3. Have used Firefox for years, but when I received Firefox 29, I started having issues with my Mac having full crashes. Through trial and error, I isolated that it only occurs after I have moved Firefox into my external monitor. After Firefox is in the external monitor, moving any other application to or from the external monitor results in a crash maybe 1 out of 5 attempts. I have tried connecting to a different monitor and I have tried both the HDMI port and the Thuderbolt to DVI connector on the Mac with the same crash still occuring.

All Replies (1)

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

You can try to disable hardware acceleration in Firefox.

  • Firefox > Preferences > Advanced > General > Browsing: "Use hardware acceleration when available"

You need close and restart Firefox after toggling this setting.