`radeontool light off` does not turn off backlight

[Paul Menzel]

Dear Radeon folks,


using radeontool 1.6.2-1.1 from Debian Wheezy/testing [1]

        $ sudo radeontool --debug light off
        Found card 1002:9555 (30000)
        Radeon found. Base control address is 7f0746826000; base
        framebuffer address is 7f0735e73000.
        reading RADEON_LVDS_GEN_CNTL (2d0) is 00000000
        writing RADEON_LVDS_GEN_CNTL (2d0) -> 00000000

does not turn off the backlight of the laptop monitor. This is a Lenovo
G555 laptop with a ATI Radeon HD 4200 graphic device [2].

Do I need to submit a report to Freedesktop.org’s Bugzilla bug tracking
system?


Thanks,

Paul


[1] http://packages.debian.org/wheezy/radeontool
[2] https://en.wikipedia.org/wiki/Lenovo_G555
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