it was a bad choice though
Ben64: ok, thanks I will try it next time my computer boots then. :) so you are confident it is an ACPI issue of Ubuntu?
cisstrd: yep
so your suggestion was to buy just another SSD which works just fine, or buy me an old HDD for $6-15? or I should do a research… :D
well my advice is not to run ubuntu on a laptop, so it seems you did it anyway :D