[Bug 41467] No display with switcheroo

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=41467

--- Comment #10 from Cedric Sodhi <manday at gmx.net> 2011-10-05 04:43:00 PDT ---
I know of no reliable way to bring the backlight on, particularly because the
actual problem has not yet been determined. However, if you have an external
monitor you may try to attach it to VGA on boot and see whether you can see the
clone there. If so, you can at least experiment with xrandr, as I described in
the bug. Read it carefully, it also is relevant how the laptop is currently
supplied [1]. If it turns out to be the same bug as Bug #41306 , please close
this one here as a duplicate so that efforts are concentrated and the number of
affected users can clearly be seen.

[1] http://marc.info/?l=linux-acpi&m=131749369005052&w=2

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