<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB/HSW/BSW/SKL bisected] black screen on DP+eDP"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90861#c17">Comment # 17</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB/HSW/BSW/SKL bisected] black screen on DP+eDP"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90861">bug 90861</a>
from <span class="vcard"><a class="email" href="mailto:yex.tian@intel.com" title="ye.tian <yex.tian@intel.com>"> <span class="fn">ye.tian</span></a>
</span></b>
<pre>(In reply to Maarten Lankhorst from <a href="show_bug.cgi?id=90861#c15">comment #15</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=116355" name="attach_116355" title="Copy hw settings to adjusted mode">attachment 116355</a> <a href="attachment.cgi?id=116355&action=edit" title="Copy hw settings to adjusted mode">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=90861&attachment=116355'>[review]</a> [review]
> Copy hw settings to adjusted mode
>
> Examining things more closely I noticed this as the first difference..
>
> Bad:
> [drm:intel_dump_pipe_config] requested mode:
> [drm:drm_mode_debug_printmodeline] Modeline 0:"" 0 108000 1280 1328 1440
> 1688 1024 1025 1028 1066 0x0 0x5
> [drm:intel_dump_pipe_config] adjusted mode:
> [drm:drm_mode_debug_printmodeline] Modeline 0:"" 0 0 0 0 0 0 0 0 0 0 0x0 0x5
>
> Good:
> [drm:intel_dump_pipe_config] requested mode:
> [drm:drm_mode_debug_printmodeline] Modeline 0:"1280x1024" 60 108000 1280
> 1328 1440 1688 1024 1025 1028 1066 0x48 0x5
> [drm:intel_dump_pipe_config] adjusted mode:
> [drm:drm_mode_debug_printmodeline] Modeline 0:"1280x1024" 60 108000 1280
> 1328 1440 1688 1024 1025 1028 1066 0x48 0x5
>
>
> Could you test if this fixes the bug? If not attach a new log?</span >
Test it on latest nightly kernel with the patch, This issue does not exists.
But It will cause somes errors. please see the dmesg log.
"[drm:check_crtc_state [i915]] *ERROR* mismatch in fdi_lanes (expected 2, found
4)"
BTW, This issue does not exists on HSW with the latest nightly
kernel.(rc6_drm-intel-nightly_d4f412_20150606+)</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>