Solved! HP Pavilion laptop runs but when I go away a while, it goes blank (but not black). Can't wake up

[fpn-pelikan]

In 2012 I wiped the HDD drive on a HP Pavilion g7-1322nr laptop. I got rid of Windows and installed MX Linux the latest edition of which was installed just 4 days ago by me. When I quite infrequently use this computer, things seem fine 'til I go away from the laptop to do something else. While I'm away from it, the screen goes blank (but not blank-- it's still running) and is locked. Nothing I do - save restart the laptop - gets me back to a useful desktop. What could be wrong here and how is this fixed? Is this some kind of flaw in this model?


My OS is only MX Linux. [No Windows on this laptop.]

 

[helpstar]

disable hybernate/standby in Linux

eventually in BIOS, you can change the sleep states

more info
https://www.kernel.org/doc/html/v4.15/admin-guide/pm/sleep-states.html