Laptop does not wake up after sleep

Question

Today afternoon i wanted to download websphere, so i started download and closed the lid and came back after 2 hrs and opened the lid..

I think laptop was running..but when i hit my enter button display is not coming...I had to hard reboot my machine to get the display..

It happened many times..not only in this instance..

I just installed Ubuntu 10.04 ..i did not change anything..Do i need to do anything to enable this feature?

Solution 1

I just selected Blank screen as the option under power management utility for the action when lid is closed..

Now it is working..

Solution 2

You can configure the laptop not to suspend when you close the lid using the power management tools from the menu:

System > Preferences > Power Management

If your laptop has an nVidia graphics card, it may be the open source graphics driver causing the problem. The open source graphics driver has some power management issues on some laptops. Try switching to the closed source drivers with the Hardware drivers tool from the menu:

System > Administration > Additional Drivers

Thank you

Comments

[flo]

Have you tried pressing your computers On/Off button when it is 'asleep'?

[Takkat]

After power on from suspend, did you wait a little longer than usual? Wake up from suspend to disk may take minutes on some systems.

[CodingHamster]

Ya i waited for 5 min..and still display wont turn on..

[Vinay]

Did u try just pressing your computer's On/off button and not an hard reboot.?

[Jorge Castro]

This question should instead be filed as a bug report, thanks! Instructions here.

[CodingHamster]

Have you tried coffee? I thought u r talking about a software to install to fix this :) ..

[Hosein Remezan]

Many thanks, this solution solved my problem on elementary os loki.