Comment 7 for bug 1165590

Been using 14.04 for a few days, maybe 2 weeks now, and initially it worked fine.

After suspending for a day today however (no updates installed) gsd-backlight-helper now targets acpi_video0 instead of intel_backlight which results in not functinoal backlight. /usr/bin/intel_backlight works as before, but I'd expect that gsd-backlight-helper would use some smarts to pick a backlight or atleast allow it to be configurable?

Long story short, gsd-backlight-helper seems to not consistently pick the correct backlight.
Or
acpi_video0 isn't linked to intel_backlight?

This on a macbook pro 13 retina (11,1)