Ubuntu
linux package

  1. Bug #1639517
  2. Comment #4

Comment 4 for bug 1639517

Revision history for this message
penalvch (penalvch) wrote :

FFab, thank you for reporting this and helping make Ubuntu better.

To clarify your Bug Description:

>"When booting the screen is black – backlight on – off - on."

 Are you noting that the laptop LCD backlight goes from 0% brightness to 100% automatically? If so, how often does it cycle between the two?

If so, as per your attachment https://launchpadlibrarian.net/292333261/CurrentDmesg.txt :
[ 0.576786] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness