Ubuntu
linux package

  1. Bug #765438
  2. Comment #23

Comment 23 for bug 765438

Revision history for this message
Christian Mortensen (darkierawr) wrote : Re: On startup, the backlight is off on laptop

Thank you for everyone who commented on this thread. With the exception of my hardware keys beings reversed, with the information on this post I was able to get Linux to install and the back light restored. I have a Gateway NV78.

I ended up adding "acpi_osi=Linux" to /etc/default/grub, "setpci -s 00:02.0 F4.B=00" to etc/rc.local, and installing the back light patched kernel. "acpi_osi=Linux" restored backwards functionality to the hardware buttons, "setpci -s..." set my back light to max on boot, and the back light patched kernel allowed me to use the hardware buttons after going into suspend mode or if the screen dimmed.

I also ended up having to use "i915.broken=1/i915.alse_backlight=1" to get in with the boot cd. Not sure why, but "acpi_osi=Linux" wasn't doing it for me then.

Thank you all again!