[Bug 67609] [HSW ULT] clonemode of eDP and HDMI causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67609

--- Comment #4 from cancan,feng <cancan.feng at intel.com> ---
(In reply to comment #3)
> Have you checked for any output netconsole yet? A few old kernels?

This machine can only use USB network adapter, with which netconsole can't
work.

> Optimistically this used to work and we can bisect the cause.

Yeah,this is a regression. I bisected this:

4906557eb37b7fef84fad4304acef6dedf919880 is the first bad commit
commit 4906557eb37b7fef84fad4304acef6dedf919880
Author: Rodrigo Vivi <rodrigo.vivi at gmail.com>
Date:   Thu Jul 11 18:45:05 2013 -0300

    drm/i915: Hook PSR functionality

    PSR must be enabled after transcoder and port are running.
    And it is only available for HSW.

    v2: move enable/disable to intel_ddi
    v3: The spec suggests PSR should be disabled even before backlight (by
pzanoni)
    v4: also disabling and enabling whenever panel is disabled/enabled.
    v5: make it last patch to avoid breaking whenever bisecting. So calling for
        update and force exit came to this patch along with enable/disable
calls.
    v6: Remove unused and unecessary psr_enable/disable calls, as notice by
Paulo.

    CC: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
    [danvet: Drop the psr exit code in the busy ioctl since I didn't merge
    that part of the infrastructure yet - it needs more thought.]
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

:040000 040000 df6a542740e60b0ae2ea72ea72caf0e3aed17869
5c326989834a202dd43030eb
4b6d69e1eb804ba2 M      drivers

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20130802/1329b009/attachment.html>