as TroN-0074 pointed out, Linux is just the kernel, which is now at version 3.2. However 10.04 look like a version of Ubuntu, is that it!?!?
I am just gessuing: you might have a problem with the configuration of Xorg. A quick googling brought up this
(check post #4), I hope it can help.
Anyway, if you let us know a bit more in detail the specification of your compaq may be usefull.