Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Running 11.10, with up-to-date Flash (, which the Flash site agrees is the up-to-date version). Every Youtube video reports a blank screen with the words, "Invalid parameters":

I've tried fiddling with the player "hardware acceleration" setting, and that has no effect. Similarly, I've clicked and un-clicked and re-clicked the "storage" options in the global settings thing, also to no effect.

I haven't seen this in any google searches (though there are other problems described involved the "Invalid parameters" message) which makes me think it's a recent phenomenon.

edit — hmm, fails in Firefox but works in Chrome ...

share|improve this question
up vote 1 down vote accepted

Maybe you already did but, have you tried "flash-aid" add-on for Firefox? It installs the best option for you. It has solved me problems several times after trying for hours by myself with no luck.

share|improve this answer
No I haven't tried that but I will now. Thanks! – Pointy Nov 18 '11 at 16:00
Worked. It's odd that the plugin seemed to work OK in Chrome. – Pointy Nov 18 '11 at 16:09

It doesn't technically solve your problem, but I heartily recommend trying HTML5 videos on YouTube and sidestepping this whole nasty Flash business.

You can opt in at then most/nearly all videos will work without touching flash at all.

share|improve this answer
sudo killall plugin-container

and reload the page

This solution worked for me. Had incessantly been getting this particular error with videos that involved flash(html5 didn't seem to be available for them)

share|improve this answer
Yes, thanks for adding this - nuking the Flash container is certainly an important trick to know :-) – Pointy May 24 '12 at 22:52

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.