Linux

  1. Bug #765438
  2. Comment #3

Comment 3 for bug 765438

Revision history for this message
diehard67 (diehard67) wrote : Re: On startup, the backlight is off on laptop

I have an aspire 7715 and I had the same problem.
also that work around worked for me.

another note.
adding acpi_backlight=video to the kernel command line makes the system aware of when the brightness changes, it still can't change it in software.
acpi_backlight=vender the backlight keys still work but the os doesn't seem to see when you change the brightness.

also software brightness control works in windows, for whatever that is worth.