Enabling hibernate in Ubuntu 14.04

The new laptop (Dell Inspiron 5000) has one or two teething issues. Which is disappointing as I had installed Ubuntu on the XPS I had previously (at work) with no problems at all, so thought this laptop would be a safe bet.

At present I can’t use suspend. Although the laptop sounds like it is resuming, the screen remains blank and I have to do a hard reset. It’s a pain starting everything up again whenever I shut down, so I thought I’d try hibernate instead.

For some reason this is not available on the system tray menu. To hibernate from the terminal the command is:

sudo pm-hibernate

My laptop resumes fine after this. To add the option to the system tray menu, I edited the file

/var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla

I changed the setting ResultActive to yes in the two places below:

...
[Disable hibernate by default in upower]
Identity=unix-user:*
Action=org.freedesktop.upower.hibernate
ResultActive=yes

[Disable hibernate by default in logind]
Identity=unix-user:*
Action=org.freedesktop.login1.hibernate
ResultActive=yes
...

I also decided it would be useful for the laptop to hibernate if I shut the lid. To do this I edited the file

/etc/systemd/logind.conf

I replaced the line below:

#HandleLidSwitch=suspend

with

HandleLidSwitch=hibernate

Reboot required after these changed. Now it will at least hibernate. Thanks to this blog post (and the comments) for the guidance: http://ubuntuhandbook.org/index.php/2014/04/enable-hibernate-ubuntu-14-04/

Next I need to get the audio working…

  

ACPI PCC probe failed

I had one problem getting Ubuntu 14.04 to install on a Dell Inspiron 5000 series. Booting from the USB was no problem – hit F12 at startup to go to boot menu, and chose to boot from the USB drive. I didn’t have to disable Secure Boot or UEFI mode.

However, after selecting “Try Ubuntu”, all went blank. When I tried a second time in Legacy boot mode, I got a more helpful error message:

ACPI PCC probe failed

A quick google suggested this was a problem introduced Ubuntu 14.04.3. Some scary sounding fixes were suggested, but I took the easy option of downloading the 14.04.1 iso instead, which installed fine.