Hi.
Thanks for using a fully free operating system. Please note that gparted has
nothing to do with RAM allocation (other than the fact it uses RAM while it's
running, like almost any other program[1]), it's used to partition and format
a block device like a hard disk or a solid state drive.
I can't provide much insight into this problem. Do “lspci -k” to see
which kernel driver is in use for the integrated video controller. Search the
web for it, maybe your problem is a known bug. Maybe it's a configuration
problem of X11. Did you search the web already for things like “AMD APU
half screen displayed only”?.
Good luck.
[1]: Some software for microcontrollers use no RAM at all, but instead stores
all the run-time data in the processor registers. Even for embedded devices
this practice is uncommon.