In another futile attempt at getting SWSUSP2 to work on my laptop, I installed a 2.6.7 kernel from TuxMobil.org.
The results were so so.
First the kernel didn’t boot. It would hang just after a line of
ACPI: IRQ9 SCI: Edge set to Level Trigger.
After some searching I found the solution: add ‘nolapic’ to the kernel arguments. With that option the kernel boots perfectly.
Next problem was that no kernel modules wouldn’t load. No matter what I did, I kept getting the error message:
QM_MODULES: Function not implemented.
This time it was because my versions of depmod(8), insmod(8) et.al. were too old. I installed the debian package ‘module-init-tools’ and this problem went away too.
Some modules have changed names and some drivers have been replaced compared to Linux 2.4.24. I had to load ‘psmouse’ to get the PS/2 mouse to work and the USB host module is ‘uhci_hcd’.
Since the kernel from TuxMobil.org is made for Asus laptops, many drivers are compiled into the kernel (such as sound, drm, agpgart, the nic and acpi), so there are relatively few modules loaded. I just load these:
uhci-hcd psmouse parport_pc ath_pci
Now, to get back to Software Suspend, it still doesn’t work. With my previous kernel I could suspend, but not resume, and now I cannot even suspend. The process blocks at “Freezing processes”, but fortunately I can interrupt it by pressing ESC.
I suspect the DRM module or agpgart to be the culprit.
I also tried to use S3 suspend to ram, both with acpi_sleep=s3_bios and acpi_sleep=s3_mode, but also without success. The suspend doesn’t quite work, because I can continue to type and edit so the kernel input line discipline is working, but the system remains unresponsive, and the only way out is to force a reboot by pressing the power button for some seconds.
All in all, I’m practically back where I started, albeit with a newer kernel, which is not bad, but still no working suspend.
The boot log is here.
UPDATE: the upgrade killed waproamd. The ath_pci driver no longer registers a disassociation, the no more roaming 🙁
UPDATE 2005-06-04 13:48:26 CEST
Software Suspend now works, with a more recent kernel.