Suspend/Wake Up not working - black screen

Question

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.

Here is pm-suspend.log and cat /var/log/syslog | grep PM

I was thinking of doing downgrade to a working version of Ubuntu (or a kernel), but I don't know what could it be.

Solution

I recently had the same experience and by switching to the proprietary drivers for my video card (In my case nvidia) I was able to solve these problems.

The way I did this was quite simple. Ubuntu Software Center > Edit > Software Sources > Additional Drivers (switch to proprietary)

Comments

[MrMoog]

I tried that way, but I have not found stable proprietary drivers for my ATI video card.

[Carlos Quijano]

I had this problem too on my old HP 844w / NVINDA Quadro and was fixed using the apropiate nvidia propietary driver. Thanks