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How do I stop old tabs from going to sleep when not opened for a while?

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Ever since the Firefox 57 update, my tabs sort of go to sleep when I haven't opened them for a while -- that is to say, if I switch to a tab I haven't used in a few hours, it shows a white page with a loading wheel. While I understand that it's to preserve memory, waking these tabs up is an absolute nightmare and cause the entire browser to slow or freeze. How do I turn off this option?

Ever since the Firefox 57 update, my tabs sort of go to sleep when I haven't opened them for a while -- that is to say, if I switch to a tab I haven't used in a few hours, it shows a white page with a loading wheel. While I understand that it's to preserve memory, waking these tabs up is an absolute nightmare and cause the entire browser to slow or freeze. How do I turn off this option?

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If on a limited account of gigs it is wise to let them sleep. If unlimited band with use then, maybe others Copy/Paste keep Alive into the Search Box on the Below URL.

Please let us know if this solved your issue or if need further assistance.

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Try to set this pref to false on the about:config page.

  • memory.free_dirty_pages = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.