From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 77261] New: [pciehp] (PCI Express Hot Plug Controller) unloads
 radeon DRM driver w/ vgaswitcheroo
Date: Tue, 03 Jun 2014 19:21:35 +0000
Message-ID: <bug-77261-2300@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=77261

            Bug ID: 77261
           Summary: [pciehp] (PCI Express Hot Plug Controller) unloads
                    radeon DRM driver w/ vgaswitcheroo
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.15-rc8
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: shawn.starr@rogers.com
        Regression: No

Created attachment 137971
  --> https://bugzilla.kernel.org/attachment.cgi?id=137971&action=edit
kernel dmesg w/ failure and successes

While the following commit f244d8b623dae7a7bc695b0336f67729b95a9736 may have
fixed this in past it is broken for my W500 Lenovo laptop.

Sometimes it doesn't unload driver other times it does. I've attached two
conditions where once it doesn't and the other it keeps radeon.ko loaded.

Ref: 
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f244d8b623dae7a7bc695b0336f67729b95a9736

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