Hi !
The problem I have does not seem DRI-related, since it happens also
when I have no X server running.... I tried to remove as many modules
as I could, but still no success. Thanks Johannes anyway for pointing
out some possible causes.
I will not have much time this week, but I will try to compile my own
kernel to see if it can improve things.
Suspend to disk is nice since it allow you to shutdown/restart your
computer quite fast, and you are not obliged to stop any programs. It
is more convenient than suspend-to-ram when you are on batteries and
are obliged to have long moments when you cannot use your computer,
but you still don't want to restart from scratch.
Cédric