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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] DVI screen is black on some modes when running testdisplay"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89606">89606</a>
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<th>Summary</th>
<td>[BSW] DVI screen is black on some modes when running testdisplay
</td>
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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>
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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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<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=114378" name="attach_114378" title="dmesg log">attachment 114378</a> <a href="attachment.cgi?id=114378&action=edit" title="dmesg log">[details]</a></span>
dmesg log
==System Environment==
--------------------------
DVI monitor: ASUS PA238Q
BIOS: V59
Regression: No. First run with DP->DVI adapter
Non-working platforms: BSW
==kernel==
--------------------------
-testing: drm-intel-testing-2015-03-13 (fails)
==Bug detailed description==
-----------------------------
I connected to DVI monitor with DP->DVI cable and run "testdisplay -a", the
screen is black with following modes:
CRTC(20):[2] 1280x1024 75 1280 1296 1440 1688 1024 1025 1028 1066 0x5 0x40
135000
CRTC(20):[5] 1440x900 60 1440 1488 1520 1600 900 903 909 926 0x9 0x40 88750
CRTC(20):[9] 1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800
CRTC(20):[10] 1024x768 70 1024 1048 1184 1328 768 771 777 806 0xa 0x40 75000
FYI: I connected the DP-DVI cable to DP port in DUT and DVI port in monitor.
"testdisplay -i" shows that there is a "HDMI" connection:
34 33 connected HDMI-A 510x290 22
==Reproduce steps==
----------------------------
1. Connect DVI monitors with DP->DVI adapter and boot
2. testdisplay -a</pre>
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