Lazarus version 1.6.4, Widgetset gtk 2
CPU Intel(R) Atom(TM) CPU N2600 @ 1.60GHz, Mem 2GB, fpc 3.0.2
Video Intel Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller (rev 0b)
OS 32bit Linux Mint 17.3 Xfce, MSI U180 Notebook
The problem manifests even on a simple tutorial example, so its probably not related to a 1000 line (with extra debug code) project I've been debugging for extended periods, in breaks while out working.
After Resume from hibernate, I get a blank form. Moving, resizing, maximise, minimise have not helped. Variable values are retained. Hopefully there is a solution I've not found yet.
I could post the simple example code, but its from
http://wiki.freepascal.org/TLabel section, titled Change caption at run time. I 'lurk', look, try to learn (slowly, I'm an old feller) & I've only posted once I think, & got some help to get me going.