Status update. I found some related info. and made some progress on fixing the Suspend feature on my laptop. My laptop has an ATI graphics card. When I was using Dapper, I had enabled hardware 3D acceleration by using the ATI proprietaty driver. When I upgraded to Edgy, I lost the 3D support because the configuration went back to using the open Ubuntu graphics driver. So I followed the steps under https://help.ubuntu.com/community/BinaryDriverHowto/ATI to re-enable the 3D support. There is a reference there that use of the ATI proprietary driver is necessary for Hibernate support. After successfully re- enabling 3D graphics support, the laptop now also successfully resumes after going into Suspend. A small problem still remains that neither Suspend nor Hibernate activates if the screen lid is closed when the idle timeout is reached.
-- [regression] Suspend [to-RAM and to-disk] is broken in 2.6.15-25.43 https://launchpad.net/bugs/50031 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
