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-rw-r--r--README.debugging6
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diff --git a/README.debugging b/README.debugging
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--- a/README.debugging
+++ b/README.debugging
@@ -21,6 +21,12 @@ End-user customization and debugging:
environment variable to have that module removed when the system
suspends and reloaded when the system wakes up.
+* If your clock drifts across a sleep/wake cycle, you can use
+ NEED_CLOCK_SYNC="true" to force pm-utils to synchronize clocks.
+ This is a change in the default behaviour of pm-utils -- 1.2.2.1 and earlier
+ always synchronized clocks, but doing so is slow and most hardware stays in
+ sync without assistance.
+
* To find out what parameters can be passed to pm-suspend and friends, run them
with '--help' as the first parameter as root. This will print out the
options that it supports and which hooks or modules handle those options.