I had some suspend / resume problems for some time now and digged a little bit into the infrastructure of suspending. The finding was, that some time ago I installed some additional power-management stuff, which is not as good tested as the default ubuntu setup. Since I reverted back some days ago, I have absolutely reliable NM after suspend.
Hint:
Please check, if you have powersave or kpowersave (both from universe) installed. If so, replace it by powernowd and apmd as dependencies of ubuntu-desktop.
I had some suspend / resume problems for some time now and digged a little bit into the infrastructure of suspending. The finding was, that some time ago I installed some additional power-management stuff, which is not as good tested as the default ubuntu setup. Since I reverted back some days ago, I have absolutely reliable NM after suspend.
Hint:
Please check, if you have powersave or kpowersave (both from universe) installed. If so, replace it by powernowd and apmd as dependencies of ubuntu-desktop.