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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Hang during boot when DPM is on (R9 270X)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76490#c23">Comment # 23</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Hang during boot when DPM is on (R9 270X)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76490">bug 76490</a>
from <span class="vcard"><a class="email" href="mailto:dex+fdobugzilla@dragonslave.de" title="dex+fdobugzilla@dragonslave.de">dex+fdobugzilla@dragonslave.de</a>
</span></b>
<pre>I did some checks using the old profile based aproach for PM and switched
between the states.
Following are the data from /sys/kernel/debug/dri/0/radeon_pm_info when
switching via echo X > /sys/class/drm/card0/device/power_profile
Default:
=================================
default engine clock: 1080000 kHz
current engine clock: 149990 kHz
default memory clock: 1400000 kHz
current memory clock: 149990 kHz
voltage: 1206 mV
PCIE lanes: 8
Low:
=================================
default engine clock: 1080000 kHz
current engine clock: 299990 kHz
default memory clock: 1400000 kHz
current memory clock: 149990 kHz
voltage: 875 mV
PCIE lanes: 8
Mid:
=================================
default engine clock: 1080000 kHz
current engine clock: 299990 kHz
default memory clock: 1400000 kHz
current memory clock: 149990 kHz
voltage: 875 mV
PCIE lanes: 8
High:
=================================
default engine clock: 1080000 kHz
current engine clock: 1080000 kHz
default memory clock: 1400000 kHz
current memory clock: 1399990 kHz
voltage: 1206 mV
PCIE lanes: 8
The last state (high) results in immediate freeze.</pre>
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