[Nouveau] [Bug 85570] DPMS does not turn off LCD backlight on G73 (NV4B) [GeForce 7600 GS]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85570

--- Comment #2 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Erik van Pienbroek from comment #1)
> Hi,
> 
> I'm also on Fedora and have been observing similar issues on my Dell XPS
> 17/GeForce GT 555M where the backlight of the internal display doesn't turn
> off any more (xset dpms force off) starting with early kernel 3.16 snapshots
> (git tag v3.15-9837-g682b7c1c8ea8 was the first one to be broken). This was
> reported to Red Hat bugzilla @
> https://bugzilla.redhat.com/show_bug.cgi?id=1123661 which is currently still
> open.

The patch referenced in that bug report relates to DP outputs. This bug report
is about a NV4B which came out in ~2005, and has no DP outputs. It also uses
the 'dispnv04' path rather than the nv50_display path and is very different.

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