Comment 5 for bug 224448

I can also confirm both scenarios described above:

1) Resume from suspend results in a white screen instead of an unlock dialog. Blindly typing the password at the white screen results in unlocking the screen.

2) Resume from suspend results in a normal unlock screen, then I have a white box in the lower right hand corner of the screen that persists across all workspaces.

I am running Compiz and have Desktop Effects turned on.

System: HP Pavilion dv6700t, 256MB NVIDIA GeForce 8400M GS
Driver: nvidia-glx-new 169.12+2.6.24.12-16.34

Distributor ID: Ubuntu
Description: Ubuntu 8.04
Release: 8.04
Codename: hardy