If I suspend laptop (closing lid, calling pm-suspend or doing it manually from menu), when I wake it up, everything seems to turn on except for screen. Screen remain literally off, so even backlight is deactivated. Only way is to force shutdown.
I am on Ubuntu 13.10 with latest kernel (3.11.0-15-generic). My machine is an HP Pavilion DV6-2000sl laptop. VGA is AMD/ATI RV710/M92 [Mobility Radeon HD 4530/4570/545v]. Driver I'm using is open-source (radeon).
I tried much things found on the web (among which installing fglrx drivers), but nothing worked for me.
I was thinking of doing downgrade to a working version of Ubuntu (or a kernel), but I don't know what could it be.