~tim/ubuntu_on_surface_go

f77d614f225d2cb4d4608affc2370e7b37d04d4a — Tim Morgan 2 years ago cbbc626 master 
Simplify suspend/hibernate notes

I had read somewhere that suspend on the Surface was not really the same
as what Linux supports, so I originally wrote that it wasn't compatible.
However, after some experimentation, I believe the machine really is
suspended. Battery life isn't great in this mode though.
patch browse 
1 files changed, 2 insertions(+), 4 deletions(-)

M README.md

M README.md => README.md +2 -4
@@ 46,9 46,7 @@ I noticed that in certain light conditions, the display on my tablet would shift

## Enable Hibernation

For the Surface tablet, Microsoft designed a special low power mode that is not compatible with standard "suspend" supported by Linux. As a result, when you close the tablet cover, the screen is disabled, but everything is still running. Batter life in this state is measured in hours -- not days.

As a workaround, you should enable hibernation and set the tablet to automatically hibernate after a reasonable period of inactivity.
To enable disk-based hibernation:

1. Run `cat /etc/fstab` and note the UUID of your swap partition.
1. `sudo vim /etc/default/grub` and find the setting `GRUB_CMDLINE_LINUX_DEFAULT`.


@@ 59,7 57,7 @@ Test that hibernation works by running `sudo systemctl hibernate`. Wait a minute

## Automatically Hibernate When Idle

The system should enter a sort of "suspend" state (scare quotes because it's not really actually suspend) which saves some battery, but I wanted the system to hibernate after a longer period of inactivity. Below steps accomplish that:
The system should enter suspend state after a short period of inactivity, which saves some battery, but I wanted the system to hibernate after a longer period of inactivity. Below steps accomplish that:

1. Add the following line to `/lib/systemd/system/suspend.target`: