M6400: Screen does not come on after hibernating ?

When I put my laptop to sleep (to RAM), after a while it automatically suspends.
Then, when I wake it up, it goes to bios, the resuming windows screen, then blank.
To make the screen come on, I have to susspend to ram again, then wake it up.

How do I fix this

 

Long shot but I had a suspend/hibernate issue with the newest webcam driver from the MS Update. I rolled back the webcam driver and have not had any isseus since.

My problem was more that it would not go to sleep at all and not that it would not come back but the screen just stayed black. I had to hard reboot it.

Keep us posted.

 

I have no idea about this issue.

Another long shot, how much RAM do you have? Did you allow it enough time to come out of it? Hibernation is not activated in laptops with >4GB of RAM because it takes too long to come back.
And it is true. Mine takes a lot of time to come back after hibernation so almost always I put it in sleep mode.

 

Are you putting it into hibernate or sleep mode? AFAIK sleeping is suspending to the memory, hibernating is suspending to the HDD?

Regardless, I'd say it's most likely a driver problem; mostly likely the video driver. I'd try re-installing said driver, rolling back to an older versions, or, if you're using a third-party driver, go back to the Dell drivers. Failing that it's still probably a driver issue, but it'll probably be a pain to track down the culprit...

 

Hi

I got exactly the same issue in Nov 2007 with my new M6300
This is definitely a problem caused by the nvidia Drivers, the drives comes with my Dell have this issue, sometimes a sleep also ends in a Bluescreen
Takes some time to find the right driver for my Card now everything works well.

Take a look at http://laptopvideo2go.com/ there are good modded (desktop) drives that can be used with mobile nvidia GPUs since the drivers from Dell are sometimes a little bit outdated.

I also own now a M6400, the comming weekends i will have (i hope so) some time to work with it in more detail. When i find the best Driver i will post it here

Regards
Christopher

 

I put it to sleep (to RAM). After a while (an hour ?), it automatically hibernates (the ram blinking lights have turned off). Then, when I turn on the power button, the laptop says "resuming windows", and then blank screen.

I currently have 1GB of ram