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=f2...