<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - optimus don't use nouveau card" href="https://bugs.freedesktop.org/show_bug.cgi?id=64746#c12">Comment # 12</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - optimus don't use nouveau card" href="https://bugs.freedesktop.org/show_bug.cgi?id=64746">bug 64746</a> from <a class="email" href="mailto:emil.l.velikov@gmail.com" title="Emil Velikov <emil.l.velikov@gmail.com>"> Emil Velikov</a> <pre>(In reply to <a href="show_bug.cgi?id=64746#c7">comment #7</a>) > cat /sys/kernel/debug/vgaswitcheroo/switch > 0:DIS: :Pwr:0000:01:00.0 > 1:IGD:+:Pwr:0000:00:02.0 > > don't seem switched? > > i tried > echo DIS > /sys/kernel/debug/vgaswitcheroo/switch > > but the screen get completly black... > With "screen" I believe that you're talking about the laptop LVDS? In that case it seems like the nv card is not wired to that output, thus you'll need to do the following * forget about vgaswitcheroo * Follow the instructions on our wiki [1] [1] <a href="http://nouveau.freedesktop.org/wiki/Optimus/">http://nouveau.freedesktop.org/wiki/Optimus/</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>