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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW] testdisplay shows black screen for HDMI 4K monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89002">89002</a>
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<th>Summary</th>
<td>[BSW] testdisplay shows black screen for HDMI 4K monitor
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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</tr>
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<th>Reporter</th>
<td>jeff.zheng@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=113217" name="attach_113217" title="dmesg with 4K monitor">attachment 113217</a> <a href="attachment.cgi?id=113217&action=edit" title="dmesg with 4K monitor">[details]</a></span>
dmesg with 4K monitor
==System Environment==
--------------------------
BIOS: V55 with 'dynamic memory self refresh' disabled
Regression: No. First test on 4K monitor
Non-working platforms: BSW
==kernel==
--------------------------
-testing: 2015_01_30 commit 4d3645e40c7039f60b6db0ce9c2251ac34faef81 (fails)
==Bug detailed description==
-----------------------------
Running "testdisplay -a", HDMI screen is black on following modes
CRTC(30):[0] 3840x2160 30 3840 4016 4104 4400 2160 2168 2178 2250 0x5 0x48
297000
CRTC(30):[1] 3840x2160 30 3840 4016 4104 4400 2160 2168 2178 2250 0x5 0x40
296704
CRTC(30):[2] 3840x2160 25 3840 4896 4984 5280 2160 2168 2178 2250 0x5 0x40
297000
CRTC(30):[3] 3840x2160 24 3840 5116 5204 5500 2160 2168 2178 2250 0x5 0x40
297000
CRTC(30):[4] 3840x2160 24 3840 5116 5204 5500 2160 2168 2178 2250 0x5 0x40
296704
CRTC(30):[5] 1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x40
154000
CRTC(30):[6] 1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 0x5 0x40
148500
CRTC(30):[7] 1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40
148500
CRTC(30):[8] 1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40
148352
...
==Reproduce steps==
----------------------------
1. Run "testdisplay -a"
2. Check output of DP</pre>
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