Most recent kernel where this bug did not occur: Distribution: Debian testing Hardware Environment: IBM T60p Software Environment: SATA set to Compatibility in BIOS (ata-piix) Problem Description: If I echo mem > /sys/power/state, the machine suspends fine. If I suspend in a console, there is no display. If X was also running, switching to F7 brings up X and I can then switch back to one of the virtual terminal consoles. After doing this, consoles 1-4 are white, but can be cleared, and otherwise operate normally again. Steps to reproduce: Suspend to mem while in a virtual terminal console, then resume.
S3 video restore is not an ACPI feature, it is a BIOS and video driver feature. Verify that you've got the latest BIOS for the box, and then check that you've got the latest ATI drivers in Linux and in X.
I have the latest BIOS (1.09) and the latest ATI fglrx (8.27.10) I don't think fglrx has anything to do with this, though. I made sure I tested without the ATI kernel driver to avoid taint issues and the console is still black, except I can't recover since X isn't running. I'm also a bit confused. I thought with ACPI that suspend modes were handled by the kernel, not the BIOS.
*** This bug has been marked as a duplicate of 7225 ***