I had the same problem. Instead of a black background I had a fairly  
vibrant pink background and all the other colors were washed out. My  
wife called it "Barbie TV". When the ATV first booted, the background  
was black and the log messages looked normal. At some point during the  
boot, the screen would go blank for a second and then come back with a  
pink background as more log messages were displayed. When X started,  
the background was still pink. Is this what you're seeing?

I think this is actually an issue with the SiI 1930 chip that drives  
the Apple TV's HDMI output. While I don't know exactly what's going  
on, here are some things that fixed the problem:

- Using newer nVidia drivers. I think 173.x and newer should work.  
However the newer nVidia drivers break the HDMI audio. So I had to use  
an older nVidia driver (version 100.14.23), and this driver has the  
Barbie TV issue.

- Using the latest ALSA deriver. You're not going to believe this one,  
but the ALSA drivers actually have an effect on this problem. The only  
thing I can work out is that the newer ALSA drivers interface with the  
SiI 1930 chip as an audio device and somehow enabling HDMI audio also  
fixes the pink video problem. You can get the latest ALSA drivers  
here: http://www.alsa-project.org/main/index.php/Main_Page  You  
probably only need the driver, not the lib or utils.

On ATV everything is good: Ubuntu 8.04, nVidia 100.14.23, ALSA 1.0.20

Good luck!

-Will


On May 14, 2009, at 10:16 AM, sean kremlen wrote:

> I've posted about this in the past and I thought I'd fixed it, but  
> actually I hadn't fixed it, so here it is again with hopefully more/ 
> better detail:
>
> When using HDMI with any distro, the tv screen has a purple haze  
> over it, and all the white areas are fairly green.  I first simply  
> adjusted the tv colors...and that kind of worked..until I switch  
> back to cable or the dvd player, and then the colors on THOSE are  
> screwy.  So that's not a good solution.
>
> I tried composite with ubuntu 8.04 and 8.10 but get garbled video  
> that also scrolls constantly along a vertical axis of the tv.
>
> TV being used is a three month old Visio HD TV.  AppleTV itself is  
> 160gb.  I am attempting to install Linux as a single boot system;  
> not as a Myth Front End or anything fancy...just need XBMC  
> functionality (well, and a non-proprietary OS if possible).
>
> Next on my list is to try composite with some other distro, although  
> I suspect the results will be the same...but maybe not; maybe ubuntu  
> is attempting to load restricted drivers by default and screwing  
> composite up...i don't know.  In the meantime, any ideas?
>
> thanks.
>
>
> >


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