Rockbox Technical Forums

Support and General Use => User Interface and Voice => Topic started by: project2501 on August 14, 2006, 01:55:47 PM

Title: 3rd gen ipod blank screen
Post by: project2501 on August 14, 2006, 01:55:47 PM
Hello all. I just stumbled upon Rockbox and I am super excited to get it working on my 3rd gen. The bootloader works just fine and once the initial rockbox page displays I get a blank screen. I have repeated the install multiple times and cannot figure out a solution. Can anyone help me? I have a feeling I'm not doing something right.

Thanks in advance!

Codin
Title: Re: 3rd gen ipod blank screen
Post by: Llorean on August 14, 2006, 01:57:50 PM
Tilt the screen, and hold it in light, and see if you can see text from various angles. I've heard that sometimes the contrast is off on first installing. If you can see signs that text might be there, you'll need to go through the menu
General Settings -> Display -> LCD settings, and I believe there's a contrast option there (I'm not really sure where it is)
Title: Re: 3rd gen ipod blank screen
Post by: project2501 on August 14, 2006, 01:59:06 PM
I forgot to mention that the blank screen can light up if I touch the ipod. In order to get out of it I have to reboot the machine (and then it goes into the same process (through the bootloader, to the initial rockbox image and then the blanks screen)). I hope this helps.
Title: Re: 3rd gen ipod blank screen
Post by: project2501 on August 14, 2006, 02:01:45 PM
Yeah the tilt doesn't seem to help at all. I'm not too sure what I am supposed to see. I can barely see on the upper left of the screen the "rock" from the initial image (but it might be a burn in).
Title: Re: 3rd gen ipod blank screen
Post by: Febs on August 14, 2006, 02:04:02 PM
Does anything happen when you press the menu button?
Title: Re: 3rd gen ipod blank screen
Post by: project2501 on August 14, 2006, 02:10:06 PM
Well I have determined it is the contrast. Hurm.. I can barely see the line i have selected when scrolling. I can't read anything but I do know the positioning of the highlighted row. can anyone tell me how I can get to the contrast setting (that Llorean was speaking of) by the row selections? ex: from start screen gor to general settings (3rd option down) ect?

thanks!
Title: Re: 3rd gen ipod blank screen
Post by: project2501 on August 14, 2006, 02:35:13 PM
Wow. Well after a while I figured out how to get to the contrast settings (blindly) from the user manual. If anyone is ever curious as to how to do all of this from main menu (initial blank screen) select general settings (3 down), select display (3 down), select LCD settings (3 down), select contrast (5 down). then scroll all the way over until you can see the screen.

thanks for all of your help!
Title: Re: 3rd gen ipod blank screen
Post by: dan_a on August 14, 2006, 03:05:33 PM
I had the contrast problem as well when I installed Rockbox, but assumed it was my iPod.  I'll change the default to be a lot darker.
Title: Re: 3rd gen ipod blank screen
Post by: Dwyloc on August 15, 2006, 06:04:39 PM
It looks like the default contrast issue for the 3rd gen iPods is now fixed in CVS
"15 Aug 09:14 Daniel Ankers   firmware/drivers/lcd-ipod.c 1.30     Change default contrast for iPod 3G" 
so you should not have this problem next time you update your installed build.

But It may take a little bit longer until all the other 3rd gen issues are resolved ;)
Title: Future 3rd gen work
Post by: dan_a on August 16, 2006, 04:44:42 AM
Yes, I've changed the default contrast to 42.

At the moment I'm working on getting the coprocessor to do audio decoding.  That should mean that you can listen to any type of music without skipping.

Once that is working, I plan to have a look at the USB since the chip used on the 3G is fairly well documented - but there's a good chance that nothing will come of that.