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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 - [byt dsi] Wrong PLL on HP Pro Tablet 408"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93744">93744</a>
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<th>Summary</th>
<td>[byt dsi] Wrong PLL on HP Pro Tablet 408
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
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<th>Hardware</th>
<td>x86 (IA32)
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<th>OS</th>
<td>Linux (All)
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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
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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>ettavolt@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=121091" name="attach_121091" title="Log with drm.debug=14 on kernel command line.">attachment 121091</a> <a href="attachment.cgi?id=121091&action=edit" title="Log with drm.debug=14 on kernel command line.">[details]</a></span>
Log with drm.debug=14 on kernel command line.
I'm trying to configure Ubuntu 15.10 on HP Pro Tablet 408 G1 (P/N: L3S95AA#ACB
if anyone interested). It is based on Z3736F.
Currently I'm stuck with problem in i915. It can't determine PLL divider (?).
With nomodeset I can get to desktop and then xrandr reports this mode: 800 x
1280 (0x26e) 78.848MHz / 98.56kHz / 77 Hz.
In the dmesg.log you can see modified '[drm:vlv_get_dsi_pclk [i915]] *ERROR*
wrong m_seed programmed' message, because I thought I could get something
useful out of pll_div value. :) Obviously, this was wrong.
I've got picture on LCD connected to HDMI. 'Displays' applet showed both
screens active with native resolution set, but tablet's screen was black.
Will it help if I attach log for booting in such configuration? What debug
level should I set?</pre>
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</p>
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