Comment 2 for bug 968532

I found this workaround (from bug #35223, comment #51):

"[...] If I put

echo 2 > /sys/class/backlight/acpi_video0/brightness

in /etc/rc.local (before exit 0) it seems to work."

Indeed it works; I just changed 2 to 1, as 1 gives a low but acceptable brightness level on this laptop.