Re: `radeontool light off` does not turn off backlight

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Am Freitag, den 10.02.2012, 05:58 -0500 schrieb David Airlie:

> > 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’s Bugzilla bug
> > tracking system?
> radeontool doesn't support turning on/off backlights on newer GPUs, and I'm not sure I see any reason for it to do so.

Because it says so in its description.

> It was originally in radeontool as a hack around lack of drivers.

Interesting. Maybe add to the `--help` text and the manual page which
GPUs are supported.



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