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List:       kde-bugs-dist
Subject:    [Powerdevil] [Bug 348082] monitor is randomly powered back on
From:       Lindsay Roberts <linds.r () gmail ! com>
Date:       2015-05-31 13:21:14
Message-ID: bug-348082-17878-EoPdLTcKGc () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=348082

Lindsay Roberts <linds.r@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |linds.r@gmail.com

--- Comment #3 from Lindsay Roberts <linds.r@gmail.com> ---
Do you have it configured to suspend session? In my setup, suspend (sleep) was
causing the issue -- there are many ways ACPI wakeup can be triggered. There is
a simple way to test: manually suspend ("Suspend To RAM" in krunner). If your
machine blanks and wakes back up in a few seconds, this is the issue.

Unfortunately if so, you are looking at an ACPI issue, which is likely a
hardware/kernel layer quirk. There is lots of talk out there about it, but
there doesn't seem to be any simple way of debugging what device woke up your
machine. The best way seems to be disabling wakeup devices from
/proc/acpi/wakeup one by one until your machine sleeps.

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