Try to Reset Firefox – easily fix most problems and check it again.

thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Try to disable hardware acceleration in Firefox.

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
• https://hacks.mozilla.org/2010/09/hardware-acceleration/

• https://support.mozilla.org/kb/how-do-i-upgrade-my-graphics-drivers

When I disabled hardware acceleration it stops flickering.

But my graphics drivers are up to date - I just updated them a week ago. And with the previous version of Firefox everything was fine with this enabled.

But it's ok with me.

Wow. Problem for weeks since updgrade to 14.0.1. Instantly solved with this suggestion!

Is this something that will be fixed in the next release? I'd rather leave hardware acceleration on.

I'm not the original poster, but would recommend he does not mark this problem as solved.

The problem is still present, and what has been presented is just a work around.

Following a quick Google it appears the base problem has been present for a about 2 years now. Claiming it is fixed when it is not will distort the bug reports and mean it is unlikely to ever be fixed (imho)

This is a 4 month old thread, which was marked as solved by the OP - it solved his support issue! If you want support, for your own support issue, ask a new question and provide the requested information. https://support.mozilla.org/en-US/questions/new

BTW, this is a support forum, not a place to report bugs. Bugzilla is for bug reporting.

I apologise.

I had not noticed the original poster had marked this as solved (I'm used to looking to the left hand side of the post for solution status)

I'd been looking for a fix to this problem on so many forums and following links from the various Mozilla support/bug/forums I must have lost track of where I was. I will try to keep a better track of that in future.

Sorry again.

Hardware acceleration isn't perfect and if Firefox doesn't detect that there are problems with the graphics display driver that prevent Firefox from working with HA enabled then your only choice is to disable this feature in Firefox if you can't find an update of the graphics display that works better.

Hardware acceleration only means that Firefox uses the GPU instead of the CPU to perform some actions with rendering images.
If the CPU is fast enough and there aren't other programs using the CPU extensively then you may not notice the difference.

• https://hacks.mozilla.org/2010/09/hardware-acceleration/