From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 61891] Cannot switch off Radeon 6400M with vgaswitcheroo
Date: Fri, 27 Dec 2013 09:49:46 +0000
Message-ID: <bug-61891-2300-nK3fVMMpgw@https.bugzilla.kernel.org/>
References: <bug-61891-2300@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=61891

--- Comment #13 from madcatx@atlas.cz ---
"acpiphp.disable=1" in the kernel bootline fixes the problem for me. The Radeon
is reported as off in vgaswitcheroo and the laptop draws less power. The DIS
even powers up and down correctly with DRI_PRIME.

Acpidump provided

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