Ubuntu 7.04/Issues/Suspend followed by Hibernate fails with binary nvidia drive
From DellLinuxWiki
Description: When using the Nvidia 3D proprietary video driver, a s2ram followed by a s2disk sometimes causes the screen to flicker endlessly when the system resumes from s2disk.
Systems Affected: Inspiron E1505n
Impact: Unable to use X
Workaround: The workaround is to disable vbe post/save options. Edit /etc/default/acpi-support and set SAVE_VBE_STATE=false and POST_VIDEO=false
Fix: No fix available at this time. Issue being tracked in Launchpad# 104889
