I have a T43 2686-DGU and all of my problems where solved with the ACPI fix 2 months ago (I think). My machine suspends to RAM and resumes correctly 100% of the time. As a side note suspend also works 100% with both the 'ati' driver and 'fglrx'. fglrx had given me grief in the past. Also, the old SATA resume bug is gone.
(http://thinkwiki.org/wiki/Problems_with_SATA_and_Linux) Currently, I am running: linux-image-2.6.15-25-386 2.6.15-25.43 acpi 0.09-1 acpi-support 0.85 acpid 1.0.4-1ubuntu11 from grub: title Ubuntu, kernel 2.6.15-25-386 root (hd0,3) kernel /boot/vmlinuz-2.6.15-25-386 root=/dev/sda4 ro quiet splash initrd /boot/initrd.img-2.6.15-25-386 savedefault Around the same time as the ACPI update, I was mucking with /etc/default /acpi-support so here is my file: Hopefully this will help someone get their machine working. I feel your pain. -- [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