https://bugs.freedesktop.org/show_bug.cgi?id=77512
Priority: medium
Bug ID: 77512
Assignee: dri-devel at lists.freedesktop.org
Summary: the start of upstream kernel is blocked at DRM/Radeon
initialization
Severity: normal
Classification: Unclassified
OS: All
Reporter: xiong.y.zhang at intel.com
Hardware: Other
Status: NEW
Version: XOrg CVS
Component: DRM/Radeon
Product: DRI
Created attachment 97453
--> https://bugs.freedesktop.org/attachment.cgi?id=97453&action=edit
dmesg when loading radeon module with drm.debug=0xe
Label: edv01 ?Edisonville?
BIOS: EDVLCRB1.86B.0033.R00.1311200915
Processor: Avoton B0
Kernel version: upstream stable kernel 3.13.7
details:
After loading Radeon module, screen is freeze. But system can response to
"ctrl+alt+del".
All upstream kernels since 3.14-rc1 have this issue.
the Graphic ID:
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9]
I bisect the kernel and the first bad commit is:
commit b39146461f8ea158fe407455467b25b3be09d84e
Author: Alex Deucher <alexander.deucher at amd.com>
Date: Wed Dec 18 19:11:27 2013 -0500
drm/radeon: re-order firmware loading in preparation for dpm rework
commit 01ac8794a77192236a4b91c33adf4177ac5a21f0 upstream.
We need to reorder the driver init sequence to better accomodate
dpm which needs to be loaded earlier in the init sequence. Move
fw init up so that it's available for dpm init.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
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