Bug 77261

Summary: [pciehp] (PCI Express Hot Plug Controller) unloads radeon DRM driver w/ vgaswitcheroo
Product: Drivers Reporter: Shawn Starr (shawn.starr)
Component: HotPlugAssignee: drivers_video-dri
Status: NEW ---    
Severity: normal CC: alexdeucher, rjw, szg00000
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 3.15-rc8 Subsystem:
Regression: No Bisected commit-id:
Attachments: kernel dmesg w/ failure and successes

Description Shawn Starr 2014-06-03 19:21:35 UTC 
Created attachment 137971 [details]
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
Comment 1 Alex Deucher 2014-08-21 17:26:52 UTC 
This is a duplicate of bug 79701.