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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [hsw] Dual display Lenovo IdeaPad y510p requires i915.invert_brightness=1 to not dim screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83459#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [hsw] Dual display Lenovo IdeaPad y510p requires i915.invert_brightness=1 to not dim screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83459">bug 83459</a>
from <span class="vcard"><a class="email" href="mailto:pietrushnic@gmail.com" title="Piotr Król <pietrushnic@gmail.com>"> <span class="fn">Piotr Król</span></a>
</span></b>
<pre>I have new observation, beacuse I'm using dual monitor setup (laptop + samsung
over hdmi) I didn't realize that disconnecting HDMI and booting with
i915.invert_brightness=1 cause laptop screen is black and I cannot increase
brightness or switch to tty console. After removing i915 parameter y510p boots
with normal scree brightness.
So it is definitely related with dual monitor configuration.</pre>
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