Problem also appears on Asus Eee PC 1005HA. To prevent it, it's necessary to wait until the power button LED and the power LED are blinking before closing the lid (after selecting "Standby" from session menu). However, in cases where I forget that or don't have the chance to wait, I assigned
xrandr --output LVDS1 --mode 1024x600 --pos 0x0 --rotate normal
to Win+X which I press if the screen remains black.
Problem also appears on Asus Eee PC 1005HA. To prevent it, it's necessary to wait until the power button LED and the power LED are blinking before closing the lid (after selecting "Standby" from session menu). However, in cases where I forget that or don't have the chance to wait, I assigned
xrandr --output LVDS1 --mode 1024x600 --pos 0x0 --rotate normal
to Win+X which I press if the screen remains black.