This appears to be a combination of multiple issues:
* Firefox doesn't support hardware video decoding.
* Your CPU doesn't support hardware video decoding.
* Firefox is software-rendered.
So I don't think the high CPU of Xorg or any other related process is
unexpected or a bug. Except maybe in your final statement:
> When I close firefox xorg ix in excution in the same way.
Can you please explain what that means?
** Summary changed:
- Bug xorg
+ High CPU usage of the Xorg process
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
** Changed in: xorg-server (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1826786
Title:
High CPU usage of the Xorg process
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