Bug#485465: thinkpad-acpi EC/NVRAM brightness sync errors
On Sun, 22 Jun 2008, Julien Cristau wrote:
> On Sun, Jun 22, 2008 at 11:43:00 -0300, Henrique de Moraes Holschuh wrote:
> > > (I never tried kde, etc. so blaming it all on "xdm" for now, as that's
> > > how I invoke X windows, and I don't want to get tangled up in the
> >
> > It is probably something else than xdm doing the nasty, though.
> >
> Right, xdm has absolutely nothing to do with this.
>
> > > Also stepping outside X with CTRL-ALT F1 (to tty1) turns brightness
> > > back up, which remains up when one steps back with ALT F7 or CTRL-ALT F7.
> >
> > Whatever THIS is, is not thinkpad-acpi's fault. This clearly means either
> > something is calling xbacklight, OR the x.org video driver itself is doing
> > stuff that is confusing your thinkpad backlight firmware.
> >
> The video driver uses the sysfs interface to change the backlight on
> vt switch, afaik.
I see. Is the video driver touching anything in the GPU? If it is NOT, and
if it is using only *ONE* of the sysfs interfaces, then it must be something
else piggybacking and screwing things up. HAL is the usual suspect.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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