We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

Firefox 56.02 keeps iMac with Mavericks OS 10.9.5 from sleeping. Why?

  • 1 ŋuɖoɖo
  • 1 masɔmasɔ sia le esi
  • 14 views
  • Nuɖoɖo mlɔetɔ cor-el

wdlr
wdlr
more options

When Firefox 56.02 is open, my iMac running Mavericks OS 10.9.5 will not automatically go into a sleep mode. When Firefox 56.02 is closed, the computer automatically sleeps when it is supposed to. Why is this happening? How do I fix the problem?

When Firefox 56.02 is open, my iMac running Mavericks OS 10.9.5 will not automatically go into a sleep mode. When Firefox 56.02 is closed, the computer automatically sleeps when it is supposed to. Why is this happening? How do I fix the problem?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can try to modify multi-process settings to see if this has effect.

  • set dom.ipc.processCount to 1 if it is currently set to a higher value (4)
  • disable multi-process windows in Firefox

You can disable multi-process windows in Firefox by setting these prefs to false on the about:config page.

  • browser.tabs.remote.autostart = false
  • browser.tabs.remote.autostart.2 = 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.