[ltp] T61 brightness control - partial solution

[Jimmy Wu]

On Thu, Mar 27, 2008 at 5:09 PM, Micha <michf@post.tau.ac.il> wrote:
> On Thu, 27 Mar 2008 14:46:12 +0100
>
> Yves-Alexis Perez <corsac@debian.org> wrote:
>
>
> > On Wed, Mar 26, 2008 at 08:47:03PM +0000, Jimmy Wu wrote:
>  > > I have a T61 running Debian Sid. The Fn+Home and Fn+End work in that
>  > > they change the screen brightness, though nothing pops up to indicate
>  > > the current level. I counted 16 levels of brightness on the way down
>  > > from max to lowest. The buttons worked out of the box on a Debian
>  > > install.  I have the thinkpad_acpi module loaded, but from what I read
>  > > in the documentation, the brightness keys are handled by the firmware
>  > > rather than the module itself.
>  >
>  > You mean that brightness works out of the box on an fresh sid install using
>  > pure Xfce4? What is your graphic card (intel or nvidia)?
>  >
>  > Cheers,
>
>  For me with t61 + nvidia graphics works out of the box with no problem, debian
>  unstable. Not a fresh install though. Network manager has been completely
>  broken for me for some time now. I may try a clean install to see if it helps
>  things. I was thinking of completely killing the windows partition that I
>  haven't booted into once since I installed debian.
>
>  I have tpd installed which shows the bar for the brightness. It seems to be
>  polling the proc interface for the audio since if I echo a value in there it
>  shows the bar but it refuses to catch the audio keys. I do get them as key
>  events into X that I have routed to amixer. There is a speaker switch to mute
>  but it causes crackling sounds on mute/unmute. proc settings also work but have
>  root write permissions only and I haven't found how to change that. I think
>  that initially the audio behaved as hardware keys but either a software or bios
>  update changed that, don't remember which.
>
>  I have read on some mail group that someone managed to get hibernation to work
>  with nvidia using dummy xserver. I didn't try that one yet, other methods
>  didn't work for me. [...]

If you find that mail group post, please send me a link - I'd be very
interested in trying it.
Thanks.

As for suspend to ram, mine works as well, but I have a suspicion that
the xscreensaver lock screen timer is still going in the back ground
even while suspended. If I suspend to ram and wake up shortly after,
my computer comes right back to where I was. If I leave and come back
after an extended period of time, my screen is locked upon wakeup --
which makes me wonder if it really is asleep like I think it is.  I'm
not sure how this works exactly, but maybe someone else might.

-- 
Jimmy Wu
Registered Linux User #454138
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