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<body><span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - xbacklight does not work properly after modifying PWM modulation frequency"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76217">bug 76217</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - xbacklight does not work properly after modifying PWM modulation frequency"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76217#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - xbacklight does not work properly after modifying PWM modulation frequency"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76217">bug 76217</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=76217#c0">comment #0</a>)
<span class="quote">> In my case, I had to change the register 0xC8254 from its original value
> 0xD9C0D9C to 0x5730573 in order to have a PWM frequency of 700 Hz.
>
> After I do the change, through the command
> intel_reg_write 0xC8254 0x5730573
> (part of the Intel GPU tools [3])
> xbacklight start to behave wrong.</span >
This is a debugging tool. All bets are off if you fiddle with the registers
directly. We do not support this.</pre>
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