[Bug 70861] New: Radeon KMS Not Triggering On Boot

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=70861

            Bug ID: 70861
           Summary: Radeon KMS Not Triggering On Boot
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.13.3
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: segaloco@gmail.com
        Regression: No

I recently bumped from 3.13.2 to 3.13.3, and upon bootup, the 'radeon' driver
didn't seem to kick-in like usual. I've tried rebooting a couple of times but
to no avail. When I booted up the 3.13.2 kernel once again, everything worked
fine. 

I'm not sure what all information you'll need to diagnose what this problem
will be, but I'm happy to provide whatever is needed. For starters, my video
line in grub.conf (Legacy GRUB) is:

video=radeon:mtrr:3,ywrap,1366x768-32@60

What I want to stress is that this behavior started with kernel 3.13.3, as
everything worked as intended in 3.13.2.

My system is loosely based on Gentoo although it is almost entirely upstream
packages built by hand now, so there wouldn't be any distro modifications
present between kernel versions. All I did for the new kernel is copy .config
over from 3.13.2 and ran and exited menuconfig to freshen the file. Please let
me know any other information that will help diagnose this problem! Thank you!

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