Re: Powerbook G4 1.33 GHz CPU temperature
On Mon, 2004-09-20 at 23:29, Michael Schmitz wrote:
> A ghost image of whatever is on the screen, displaced by (roughly) 128
> pixels to the left. At the refresh rate used by X, the ghost image
> flickers so that you see it light up with a periodicity of around a cm
> vertical, or approximately 40 pixels (that's rather harder to estimate).
> The individual streaks of ghosting seem to wander down, then jump up
> Funny enough, it's systematic enough to persist across a suspend to disk
Ok, this isn't flicker, more like the PLL locking improperly.. I've seen
this happening randomly on anton's new laptop, usually it goes away if
you force radeonfb to reprogram the display a couple of times.
Have you tried, when it happens, turning the backlight all the way down
to 0, waiting a bit, then back up ? Does this help at all ?
> If you have any ideas about which registers to look at, I'd be happy to
> debug this further. With radeonfb debug messages enabled I've only seen
> LVDS_GEN_CNTL show any variation between initial boot setup and later
> console switches. But that doesn't show a difference between the X vt and
> the console vt ...
> > > Maybe time to be more specific WRT sensor and fan location in the driver.
> > I accept patches :) Would be worth looking more precisely at what Darwin
> > does too
> Yep. At one time in the distant past I had registered for access to Darwin
> source but that's lost in the noise... I'll re-pull and send a patch,
> including the refrigerator support for the thermostat (for pmdisk).
Benjamin Herrenschmidt <email@example.com>