Re: Newbie (to ppc), but glad to be here.
On Tue, 2003-08-05 at 05:07, Jeff Feige wrote:
> Boy, I've sure noticed that the PPC support is lacking compared to i386,
> but I'm sure all of you know that already.
>
> I'm running Debian (Woody) on a Snow 500MHz (Flower Power motherboard is
> what's reported in dmesg) CRT iMac. I have been fairly successful in
> getting *most* everything set up.
Hi ! Welcome onboard ;)
> My questions are as follows:
>
> 1. Is there any way to adjust the monitor settings (brightness,
> contrast etc.) with Linux? I have googled to my hearts content but have
> found nothing definintive. I did install pmud and the pmud-utils. The
> only thing I can get to work is snooze, but of course, it puts the
> machine into power saving mode and turns the monitor off as well. This
> is great except that it keeps me from running any servers or background
> processes. It seems that DPMS jy turns the monitor to black, but
> doesn't shut it off like I would like. Since the brightness is cranked
> all the way up, the screen never gets darker than about 5-10% grey. I'm
> sure this is *real* good for the CRT over the long haul.
It _is_ possible, but we don't have a driver for that yet. It's
basically a matter of sending the proper i2c commands to the IVAD
chip that controls the display. We can change the geometry as well.
I suspect we should probably just expose the PMU i2c bus to userland
some way and have a userland tool to deal with that, I'm not too fan
of doing a kernel driver... I also have not much time.
Infos about how to drive that beast can be found in earlier Darwin
sources, look for AppleDisplays extension in darwin version around
6.2 or earlier. Apple removed that source from more recent versions.
> 2. My mixer (/dev/mixer) doesn't really seem to work properly. The Main
> volume control does nothing, while the speaker control adjusts the
> volume. This would be OK except: 1. My volume control in XMMS (I'm
> running gnome w/o esound (too slow) - so I'm using OSS in XMMS) doesn't
> work. 2. Since I cannot separately control PCM, Master and Speaker
> volume, I cannot listen to headphones and turn the built-in speaker
> volume down.
The sound driver is an old venerable pile of hack I'd rather not
touch for now, fixing that may break other machines... The Alsa
codebase is a lot saner and will be the only supported driver in
2.6, so if there's something to fix, let's fix it there and not in
good old dmasound.
> 3. Since the cdrom drive doesn't seem to have analog audio hooked to
> the sound card, how do you guys deal with playing CDs?
Install xmms-cdread plugin ;) (Typically reading audio samples via ATAPI
and outputing them to the speaker via the sound driver)
> I have been able to get alot of crazy stuff working so far, so I should
> be able to contribute as well (I hope). My next project is to continue
> to try and get the atmel driver for my wireless Belkin to compile. ;)
Good ;)
Ben.
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