I thought I'd try the 2.6.19.2 Archlinux kernel on my 600X. There seems to be lots of big changes in the kernel recently. Makes me far more hesitant to upgrade. For the 600X, I had been using apm suspend to RAM for quite some time on it with older kernels. It seemed to 'just work'. It stopped working with 2.6.19. I had to edit the /etc/apmd_proxy to do a pccardctl eject prior to suspend and then a pccardctl insert after it woke up. I have a realtek 8139 pcmcia card in the machine.
I have actually almost had ACPI work on this machine too. So far I can get it to suspend and wake up once. But the 2nd time it never wakes up.
