Most recent kernel where this bug did not occur: N/A

Distribution: Gentoo Linux

Hardware Environment: Lenovo T60p laptop (dual Pentium-M), SATA controller in 
AHCI mode: SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial 
ATA  Storage Controller AHCI (rev 02) (prog-if 01 [AHCI 1.0])

Software Environment: gcc-4.1.1, glibc-2.4

Problem Description:
On wake-up from suspend-to-RAM hard drive in SATA mode does not come back to 
life (e.g, ls hangs indefinitely). When SATA mode is set to "Compatibility" 
instead of "AHCI" in BIOS, hard drive resumes fine. Applying a patch from FC5 
[1] fixes the issue. Reproduced with vanilla 2.6.17.1 and suspend2-2.2.6.

[1] http://cvs.fedora.redhat.com/viewcvs/rpms/kernel/FC-5/linux-2.6-sata-ahci-
suspend.patch

Steps to reproduce: suspend to RAM, wake up, hard drive does not wake up.

This appears to be different from the issue in bug #6714.