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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 - Haswell ULT max. resolution regression in KMS"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101245">101245</a>
</td>
</tr>
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<th>Summary</th>
<td>Haswell ULT max. resolution regression in KMS
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>x86 (IA32)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>gate03@landcroft.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>With a 4.8.17 kernel or earlier, console graphics is set (as expected) to
2560x1600 with HDMI connected to a suitable monitor.
# lspci|grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 09)
:With a 4.9.1 or later kernel, using a .config taken from a working
configuration, resolution is 1920x1200. When it is so set, this sequence of
commands, within a terminal window in an X session, does not effect any
increase in resolution:
# cvt 2560 1600
# 2560x1600 59.99 Hz (CVT 4.10MA) hsync: 99.46 kHz; pclk: 348.50 MHz
Modeline "2560x1600_60.00" 348.50 2560 2760 3032 3504 1600 1603 1609
1658 -hsync +vsync
# xrandr --newmode "2560x1600_60.00" 348.50 2560 2760 3032 3504 1600
1603 1609 1658 -hsync +vsync
# xrandr --addmode HDMI1 "2560x1600_60.00"
# xrandr --output HDMI1 --mode 2560x1600_60.00 --verbose
screen 0: 2560x1600 676x422 mm 96.15dpi
crtc 0: 2560x1600_60.00 59.99 +0+0 "HDMI1"
xrandr: Configure crtc 0 failed
crtc 0: disable
crtc 1: disable
crtc 2: disable
crtc 3: disable
screen 0: revert
crtc 0: revert
crtc 1: revert
crtc 2: revert
crtc 3: revert
#</pre>
</div>
</p>
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