[Intel-gfx] Backlight testing

Jesse Barnes jbarnes at virtuousgeek.org
Wed Mar 26 18:39:33 CET 2008

On Thursday, March 20, 2008 2:18 pm Jesse Barnes wrote:
> I steady flow of reports about the backlight control method breaking
> relative to 2.1.1 have started to trickle in.  One of the main differences
> between 2.1.1 and 2.2.x is that 2.2.x will use the "legacy" method on 965
> chips if detected.  It appears that this causes problems on some machines
> though.
> Is anyone here seeing that issue?
> I'm thinking this patch may be the right approach to take, since
> BLC_PWM_CTL[2] should indicate whether both registers are in use or just
> one is in use, but I don't want to regress anyone.
> Can you guys give this patch a try and let me know if it works for you?

Has anyone tried this?  I've had a few success reports but no reports of 
regressions, but I'd like to hear from a few more testers before pushing...

Lukas, you've reported several backlight bugs that we've fixed, do things 
still work after applying the patch?

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