<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><span class="vcard"><a class="email" href="mailto:r.spliet@student.tudelft.nl" title="Roy <r.spliet@student.tudelft.nl>"> <span class="fn">Roy</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [NV96] Brightness stuck to low value after suspend/resume on HP Elitebook 8530w"
href="https://bugs.freedesktop.org/show_bug.cgi?id=39550">bug 39550</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>NEEDINFO
</td>
</tr>
<tr>
<td style="text-align:right;">Assignee</td>
<td>nouveau@lists.freedesktop.org
</td>
<td>r.spliet@student.tudelft.nl
</td>
</tr>
<tr>
<td style="text-align:right;">Attachment #85010 is obsolete</td>
<td>
</td>
<td>1
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [NV96] Brightness stuck to low value after suspend/resume on HP Elitebook 8530w"
href="https://bugs.freedesktop.org/show_bug.cgi?id=39550#c46">Comment # 46</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [NV96] Brightness stuck to low value after suspend/resume on HP Elitebook 8530w"
href="https://bugs.freedesktop.org/show_bug.cgi?id=39550">bug 39550</a>
from <span class="vcard"><a class="email" href="mailto:r.spliet@student.tudelft.nl" title="Roy <r.spliet@student.tudelft.nl>"> <span class="fn">Roy</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=85012" name="attach_85012" title="drm/nv50: Fix backlight not working when PWM_DIV is uninitialised (v2)">attachment 85012</a> <a href="attachment.cgi?id=85012&action=edit" title="drm/nv50: Fix backlight not working when PWM_DIV is uninitialised (v2)">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=39550&attachment=85012'>[review]</a>
drm/nv50: Fix backlight not working when PWM_DIV is uninitialised (v2)
V2 fixes the reach of this patch.
>From what I can tell the PWM_DIV is simply a divider for the initial PWM clock
or something, it does not affect the scope of the duty cycle. I therefore
assume 0x5e is always a good value to set. Traces from NV50:NVA0 would help
verify whether NVIDIA always sets this value or not.
This patch requires acpi_backlight=vendor to be set because it tests for the
presence of a backlight by testing drm->backlight. An alternative to this test
would be checking for the GPIO to be present and routed to SOR, but I wouldn't
be surprised if there is at least one device that expects our driver to route
it manually. How should we go about this?</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>