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Videos like on AOL begin to play, then the video blanks out and the audio continues. If I run Firefox in "Safe Mode" it works. disabling plug-ins doesn't work

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TED talks, AOL videos and others will begin with a flash of the video, then go blank. The audio continues. I deleted the flash and quicktime plugins - no luck. I restarted Firefox in safe mode and it works fine. I then restarted and disabled all the plugins -- no luck. Internet Explorer works fine. Any ideas?

Chosen solution

One of the feature of Safe Mode is that it disables Firefox's use of hardware acceleration for graphics. This works around incompatibilities with certain graphics driver software.

orange Firefox button (or Tools menu) > Options > Advanced

On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available"

This takes effect after you exit and restart Firefox.

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Additional System Details

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More Information

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jscher2000
  • Top 10 Contributor
2348 solutions 20818 answers

Actually, it appears you have done this already. Never mind!

What is the Hotspot Shield Extension for? A user in another thread said he had a lot of Youtube problems from that extension (but he didn't want to give it up).

Instead of disabling plugins, could you try disabling that extension? You can do that on the Add-ons page. Either:

  • Ctrl+Shift+a
  • orange Firefox button (or Tools menu) > Add-ons

In the left column, click Extensions.

If a link appear above the extension to restart Firefox, go ahead and click that. If you are in a regular (non-private session), Firefox should automatically restore your open windows and tabs.

Does that improve things?

Modified by jscher2000

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jscher2000
  • Top 10 Contributor
2348 solutions 20818 answers

Chosen Solution

One of the feature of Safe Mode is that it disables Firefox's use of hardware acceleration for graphics. This works around incompatibilities with certain graphics driver software.

orange Firefox button (or Tools menu) > Options > Advanced

On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available"

This takes effect after you exit and restart Firefox.

Was this helpful to you? 1
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Wesley Branton
  • Top 25 Contributor
178 solutions 2062 answers

Helpful Reply

Please try any the below:

Please report back soon.

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Question owner

Thanks very much for your help. Well - I deleted Hotspot Shield to no avail. Now no plugins or extensions are enabled. Killing the hardware accelerator DID work! But why? It has never had this problem before today. Was there an update that would have made that sensitive? I am not sure I like it that the accelerator is disabled.

Modified by thedavee

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jscher2000
  • Top 10 Contributor
2348 solutions 20818 answers

As the Firefox developers enable different features to use hardware acceleration, new problems may arise even if Firefox was previously stable with the same graphics drivers. And on the other hand, graphics driver updates may have been bundled in with the recent round of Windows updates, or updates from your system manufacturer. It's apparently a complicated problem making these things work together; some user have it way worse: frequent blue screen crashes...

Hardware acceleration offloads graphics processing from your main system CPU onto the graphics card. If you use a lot of 3D in Firefox, you probably will notice a difference, but for regular 2D graphics and media, not so much.

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Question owner

Thanks for the help! I really appreciate it jscher. Also thanks computer whiz

Happy holidays!

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Wesley Branton
  • Top 25 Contributor
178 solutions 2062 answers

No problem.
I'm just glad to help you.

Thank you using the Mozilla support forum.
Happy holidays to you as well.

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