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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [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#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [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>Exactly. The problem is that configuration with dual monitor start with dimmed
screen without i915.invert_brightness=1, so option is needed, but when I add it
permanently and want to take my laptop away (disconnect second monitor) I
cannot see anything - screen is blank (this is not dimmed screen - this is
other problem).</pre>
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