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
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:/ /launchpadlibra rian.net/ 292333261/ CurrentDmesg. txt :
[ 0.576786] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness