From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 74911] New: [R9 270X] - Frozen display output and no response
 from keyboard right after loading kernel image and initramfs
Date: Sun, 27 Apr 2014 15:27:56 +0000
Message-ID: <bug-74911-2300@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=74911

            Bug ID: 74911
           Summary: [R9 270X] - Frozen display output and no response from
                    keyboard right after loading kernel image and
                    initramfs
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.15.0-rc2
          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: combuster@archlinux.us
        Regression: No

After booting 3.15.0-rc2 kernel, I can only see a message from grub indicating
that kernel and initram images are loaded and that's it. No response from
keyboard, I can only do a hard reset.

After bisecting this is what I get:

1ebe92802eaf0569784dce843bc28a78842d236c is the first bad commit
commit 1ebe92802eaf0569784dce843bc28a78842d236c
Author: Alex Deucher <alexdeucher@gmail.com>
Date:   Fri Apr 11 11:21:49 2014 -0400

    drm/radeon: add support for newer mc ucode on SI (v2)

    May fix stability issues with some newer cards.

    v2: print out mc firmware version used and size

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Cc: stable@vger.kernel.org

:040000 040000 cc6858148ad9e132feeb443839a6d367a1799b4c
d8888cd6da07ac42406fc8f7e4720477fc707f83 M      drivers

This makes sense, there is no radeon/PITCAIRN_mc2.bin blob anywhere. At least
not in linux-firmware branch. 

I have compiled radeon drivers into the kernel image itself, here is a relevant
config line:

CONFIG_EXTRA_FIRMWARE="radeon/PITCAIRN_ce.bin radeon/PITCAIRN_mc.bin
radeon/PITCAIRN_me.bin radeon/PITCAIRN_pfp.bin radeon/PITCAIRN_rlc.bin
radeon/PITCAIRN_smc.bin radeon/TAHITI_uvd.bin"

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