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Drop down menus in Firefox 4 disappear

Running Windows 7 64-bit and drop down menus in Firefox 4.0 disappear. Fix this by disable hardware acceleration in Firefix.

Tools -> Options -> Advanced -> General -> Browsing:
Disable “Use hardware acceleration when available”


  1. Simon says:

    Works for me – thanks a bunch!
    Using ff 4.0.1

  2. Clen says:

    Fix also works with Firefox 5 and Windows 7 32-bit. Thanks, was really fing annoying.

  3. Mark says:

    Works for me, too, FF 4 32 bit.

    The problem, btw, only happens on my right-hand monitor which is taller than the left. Graphics board is ATI Radeon HD 5450.

  4. Phearis says:

    THANK YOU!!! I’ve spent the last 45 minutes looking how to fix the disappearing menus.

  5. Eric Hale says:

    Ya! A solution. Thanks a ton. I am going repost to help others.

  6. jen says:

    Yeah, that might work if my drop down menus worked!!

  7. xxx says:

    How do you access “Tools -> Options -> Advanced -> General ->” If the dropdown menu is unaccessible?

  8. G.J.Robert Ciang says:

    Does not work for me on Kubuntu 12.04.2. My hardware accelaration was already turned off before, but the problem still occurs.

    And weirdly, I haven’t encountered this on Windows 7, but only on Linux (KDE, E17, Gnome).

  9. K says:

    Not work for me on Gnome2 and 3.
    I turned off already but that problem still occurs.

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