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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 - Backlight control not working on Pascal / GP106 using nouveau drivers"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100446">100446</a>
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<th>Summary</th>
<td>Backlight control not working on Pascal / GP106 using nouveau drivers
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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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>Driver/nouveau
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
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<th>Reporter</th>
<td>carlo@caione.org
</td>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
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<div>
<pre>I'm currently working on an ASUS GL702VMK. This machine is shipping a GeForce
GTX 1060 GP106 (136000a1) connected to an internal DisplayPort on DFP-5 (usual
AU Optronics Corporation).
Using the unmodified latest nouveau drivers I have no backlight control.
Modifying nouveau_backlight.c adding a case for NV_DEVICE_INFO_V0_PASCAL I
finally get /sys/class/backlight/nv_backlight/ but changing the backlight value
in there is not working anyway.
Trying to manually poke NV50_PDISP_SOR_PWM_CTL(1) with `nvapoke` has no effect
whatsoever on the brightness (on or==1)
Backlight control is not working using the proprietary 375 / 378 drivers
either. Also in this case the value of NV50_PDISP_SOR_PWM_CTL is actually
changed by `xbacklight` but with no visible effect.
Any hint?</pre>
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