Gnome: at random times, screen fades to black and stays black

I'm having a strange issue with my gnome based netbook (Aspire One).
Sometimes, the screen will fade to black without any user input. It looks like the screen is powering off and preparing to go to screensaver/blank screen mode, but I cannot unlock it.
Its just the screen, I can go to tty1 (blind), login, and the computer will respond to commands such as shutdown.
I tried turning off the screensaver in Gnome settings + turning off screen blanking in Gnome Power Management, no luck.
Checked all logs, didn't find anything suspicious. Any ideas?

I'm having the same problem, at random times the screen goes black, nothing else changes, I could keep with a conversation on skype. Also sometimes the screen flickers, by the way I'm also using Gnome. I have the impression that this started since the last Kernel update and looking at the logs I found the following:
In the dmseg.log :
ACPI: I/O resource 0000:00:1f.3 [0x18e0-0x18ff] conflicts with ACPI region SMBI [0x18e0-0x18ef]
ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
I also noticed that if I close the lid of my netbook and open it again the screen appears again. I would like to find a solution to this problem but I'm not very experienced.
EDIT: I do use an intel card -- 945GME --, and the flickering seems to be from this bug on Intel Cards:
http://bugzilla.kernel.org/show_bug.cgi?id=14781
Last edited by agomezh (2010-02-08 05:28:59)

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