[Bug 66714] Mobility Radeon HD 5650 doesn't boot with kernel 3.10 (and newer) when using radeon.audio=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66714

Marco Trevisan (Treviño) <mail at 3v1n0.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #4 from Marco Trevisan (Treviño) <mail at 3v1n0.net> ---
So, I've tried the patch on a 3.10 kernel that was affected and... Great, it
Works! :)
FYI, I've also added a couple of error logs in the code to see where exactly
the failure was and this was the result:

[    2.073137] [drm] fb mappable at 0xC035F000
[    2.073139] [drm] vram apper at 0xC0000000
[    2.073140] [drm] size 8294400
[    2.073141] [drm] fb depth is 24
[    2.073142] [drm]    pitch is 7680
[    2.073252] fbcon: radeondrmfb (fb0) is primary device
[    2.073323] [drm:evergreen_hdmi_enable] *ERROR* Invalid DIG (dig:
ffff880229d0fc00, dig->afmt: (null))
/home/marco/Dev/debs/linux-3.10.0/drivers/gpu/drm/radeon/evergreen_hdmi.c:298
[    2.573589] [drm:evergreen_hdmi_enable] *ERROR* Invalid DIG (dig:
ffff880229d0fc00, dig->afmt: (null))
/home/marco/Dev/debs/linux-3.10.0/drivers/gpu/drm/radeon/evergreen_hdmi.c:298
[    2.607449] Console: switching to colour frame buffer device 170x48
[    2.610160] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[    2.610162] radeon 0000:01:00.0: registered panic notifier
[    2.610237] [drm] Initialized radeon 2.33.0 20080528 for 0000:01:00.0 on
minor 0

Full dmesg at http://pastebin.ubuntu.com/5873667/
I don't know if this may be only the side effect of another issue (wrong
initialization order?).

One more thing I discovered in the past days, is that the kernel crash was not
happening in case that the HDMI was plugged after that ligthtdm was running
(attaching it anytime before was leading to a freeze).

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