Since switching to Karmic, suspend and hibernate are not working consistently on my Toshiba Satellite. I have it set to hibernate when I close the lid, but doing so only turns off the screen. The suspend and hibernate keys on my keyboard also no longer work. When I select these options from the menu, the computer will suspend or hibernate properly.
Hibernate option is disabled by default in Ubuntu 12.04. Hibernate doesn't work in many cases with Ubuntu, so this decision was taken to avoid data loss/corruption that can happen when a user tries to hibernate his system.
So if you are quite used to hibernate feature, you will have to rely on a workaround by manually editing some system files.
My Ubuntu 12.04 is missing Hibernate option so after searching a little on Google I came to know that this can solve my problem
sudo nano /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla
Fill it with this
[Re-enable hibernate by default]
Identity=unix-user:*
Action=org.freedesktop.upower.hibernate
ResultActive=yes
Here is the link : How to enable hibernation in 12.04?
Possible Duplicate:
How to enable Hibernate in 12.04?
I just installed the new 12.04 beta on my Lenovo Ideapad U450. According to this thread Whither hybrid suspend? hibernate and suspend are supported, but in the power settings the option to hibernate is greyed out e.g. for what to do when closing the lid.
Machine->
HP311 NetBook
Dual Booting Windows 7 and 12.04
Problem->
Under System Settings - Power, I have attempted to set:
When the lid is closed:
On Battery -> Hibernate
When Plugged in -> Suspend
Obviously, Hibernate wasn't available after install and I enabled it using instructions found on this forum.
However, when I do close the lid, the screen locks and fans/HDD still seem to be going.
This simple tutorial is going to show you how to change the laptop lid close actions, including suspend, hibernate, do noting, and shutdown when the lid is closed in Ubuntu. In Ubuntu 12.10 & 12.04, hibernate is disabled by default, so this handy tutorial will also show you how to enable hibernate.
Here we go:
1.) To enable hibernate in Ubuntu 12.04 and Ubuntu 12.10.
I have a ThinkPad X61 with Ubuntu 10.4 loaded. Everything runs fine except I now need to go long periods of time without power. The time is so long I need to change the battery. Unfortunately, I see the computer does not have the hibernate option, only suspend. Suspend mode requires a battery. I tried pm-hibernate. The screen just goes blank for a moment and then returns to normal.
I just installed the new 12.04 beta on my Lenovo Ideapad U450. According to this thread Whither hybrid suspend? hibernate and suspend are supported, but in the power settings the option to hibernate is greyed out e.g.
I have a Acer Aspire 5515, 1.6Ghz AMD, 3GB RAM, ATI Xpress 1200 graphics.
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