Documentation/power/s2ram.rst

8 1) Check suspend.sf.net, program s2ram there has long whitelist of
21 always it's a driver that is buggy. Thank God for the suspend/resume
22 debugging - the thing that Chuck tried to disable. That's often the _only_
24 time-consuming - having to insert TRACE_RESUME() markers into the device
30  - enable PM_DEBUG, and PM_TRACE
32  - use a script like this::
39    to suspend
41  - if it doesn't come back up (which is usually the problem), reboot by
54    If no device matches the hash (or any matches appear to be false positives),
63 that "radeonfb" simply cannot resume that device - it tries to set the
71 hardware during resume operations where a value can be set that will
74 pm_trace is not compatible with asynchronous suspend, so it turns
75 asynchronous suspend off (which may work around timing or
76 ordering-sensitive bugs).
80 correct date/time! It is therefore advisable to use a program like ntp-date
81 or rdate to reset the correct date/time from an external time source when