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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [GLK] cdclock frequency is always the same"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100439">100439</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[GLK] cdclock frequency is always the same
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>luis.botello.ortega@intel.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>
<tr>
<th>i915 platform</th>
<td>GLK
</td>
</tr>
<tr>
<th>i915 features</th>
<td>display/Other
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=130517" name="attach_130517" title="dmesg">attachment 130517</a> <a href="attachment.cgi?id=130517&action=edit" title="dmesg">[details]</a></span>
dmesg
==Bug detailed description==
--------------------------------------------------
cdclock frequency is always the same, it does not matter if reslution is
changed on displays
==Steps to reproduce==
--------------------------------------------------
1. set a 4k resolution
2. cat /sys/kernel/debug/dri/0/i915_frequency_info |grep "Current CD clock
frequency:"
3. set a HD resolution
4. cat /sys/kernel/debug/dri/0/i915_frequency_info |grep "Current CD clock
frequency:"
==Actual results==
--------------------------------------------------
cdclock frequency is always the same (316800 kHz) , it does not matter if
reslution is changed on displays
==Expected results==
--------------------------------------------------
cdclock frequency must change according to resolution set on display
==Hardware configuration==
--------------------------------------------------
CPU Name : Genuine Intel(R) CPU @ 1.10GHz (family: 6, model: 122) 4 cores
Graphic: Intel Corporation Device 3184 (rev 01) prog-if 00 VGA controller
RVP SKU : GLK RVP1
SOC : GML A1 Soc
QDF : Ql9R
Reworks : F23
==Software configuration==
--------------------------------------------------
kernel version : 4.11.0-rc4-drm-tip-ww14-commit-dabd992+
architecture : x86_64
os version : Ubuntu 16.10
os codename : yakkety
[sudo] password for gfx: kernel driver : i915
bios revision : 36.51
ksc : 1.13
modesetting : modesetting_drv.so
xorg-xserver : 1.18.4
libdrm : 2.4.75
vaapi (intel-driver) : Intel i965 driver for Intel(R) Geminilake -
1.8.1.pre1 (1.7.3-358-g228e4fc)
cairo : 1.15.5
xserver : X.Org X Server 1.19.99.1
intel-gpu-tools (tag) : intel-gpu-tools-1.18-40-g429dd43
intel-gpu-tools (commit) : 429dd43
==kernel configuration==
--------------------------------------------------
commit dabd992961047cf26698036f563aa86a083284ac
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Tue Mar 28 18:26:27 2017 +0300
drm-tip: 2017y-03m-28d-15h-25m-54s UTC integration manifest
Kernel version : 4.11.0-rc4-dabd992
Architecture : source amd64 all</pre>
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