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Tabs randomly freeze/unresponsive after resuming from sleep (Windows 11)

Firefox App responsiveness
George Kitsoukakis replied
Sarj Worldwide
Sarj Worldwide

Hi everyone,

Since updating to Firefox 129 on Windows 11, some tabs become unresponsive after my laptop wakes from sleep — no crash, no "Not Responding" warning, just frozen. about:processes shows the tab still running with ~0% CPU, so it's not hung, just not repainting.

Tried: disabling hardware acceleration (helps a bit), fresh profile (still happens), Troubleshoot Mode (less frequent but not gone).

Anyone else seeing this? Known WebRender/compositor bug tied to sleep/resume, or a Windows 11 power management conflict?

Thanks!

Hi everyone, Since updating to Firefox 129 on Windows 11, some tabs become unresponsive after my laptop wakes from sleep — no crash, no "Not Responding" warning, just frozen. about:processes shows the tab still running with ~0% CPU, so it's not hung, just not repainting. Tried: disabling hardware acceleration (helps a bit), fresh profile (still happens), Troubleshoot Mode (less frequent but not gone). Anyone else seeing this? Known WebRender/compositor bug tied to sleep/resume, or a Windows 11 power management conflict? Thanks!

All Replies (1)

George Kitsoukakis
George Kitsoukakis
  • Moderator

Why are you using an old version of Firefox 129 on Windows 11? Is there a specific reason?

So

  • Update Firefox
  • Check for Graphics Driver Updates

Modified by George Kitsoukakis

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