I found the black-screen problem on a Lenovo 3000 N100 laptop after doing an update on 14.04 LTS recently (early September 2016). This is a 32-bit machine.
As a workaround I installed flashback: apt-get install inxi gnome-session-flashback compizconfig-settings-manager I could then select either of the Gnome options and log in OK (i.e. it works with both Metacity and Compiz, but the normal Ubuntu session fails). OpenGL renderer string: GeForce Go 7300/PCIe/SSE2 Turning off X11 Sync Objects did not fix it. I then tried some different drivers using System Settings -> Software and Updates -> Additional Drivers X.Org with Nouveau did not work at all Nvidia 173 works OK. Summary: using the older Nvidia 173 driver is an adequate workaround for me, but it looks as if this problem is more complex than just 'Sync Objects'. -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1424013 Title: Compiz high CPU and UI freeze on NVIDIA after fix for #269904 in trusty-updates To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1424013/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp
