swsusp in test8 fails with intel-agp and i830

[Aviram Jenik <aviram@beyondsecurity.com>]

Hi Pavel,

On Thursday 16 October 2003 22:21, Pavel Machek wrote:
> Hi!
>
> > Suspend to disk (I'm using echo -n "disk" > /sys/power/state) works about
> > one in ten attempts. When it works, it is _usually_ capable of
> > hibernating a few consecutive times, but then it stops working (reboots
> > on resume).
>
> can you try echo 4 > /proc/acpi/sleep?
>

In 2.6.0-test8 hibernation via "echo 4 > /proc/acpi/sleep" works incredibly 
well from the console. Great work! I tested it many times and it seems quite 
stable.

However, it fails when X is running (even if doing chvt before suspension). 
I followed your advice and removed the video card modules (intel-agp and 
i830). Indeed, when booting without those modules, suspend to disk 
miraculously works from X; I was even able to hibernate from within a KDE 
session and restore to that point exactly.

I am not sure which of the two modules causes the problem, I can only load 
them both. Unfortunately, without those modules the vaio laptop can only give 
640x480, so this is not much of a workaround...

To summarize:
If the intel-agp and i830 modules are not loaded during startup, suspend via 
echo 4 > /proc/acpi/sleep and restore work beautifully. If those modules 
_are_ loaded, and X is running, resume reboots.

- Aviram