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Re: Debian "Jessie" on Apple eMac 1.25 GHz PowerPC G4 (7447A) with ATI Radeon 9200 gives "Black Screen of Death"



Hi,

Awhile back someone posted this in the Ubuntu forums:

http://ubuntuforums.org/showthread.php?t=2294789

They're for ums-debs compiled to work in Ubuntu 14.04 and Debian Jessie.  The download link is dead, but I just uploaded them to Mediafire:

http://www.mediafire.com/download/p238aof1m7436wr/ums-debs.zip

Basically they allow you to use the old UMS that worked in Wheezy instead of KMS.  I tested these on my G3 iBook before its logic board died, and they worked.  But that was about 6 months ago, so I don't know if they still do, and they may not work in Stretch.

I also had to install the powerpc version of libgcrypt11 1.5.3 to get around a dependency error:

https://launchpad.net/ubuntu/trusty/+package/libgcrypt11

That Ubuntu package is also compatible with Debian [well, compatible enough for me, anyway ;) ]

Then you append "radeon.modeset=0" to your yaboot.conf to disable KMS, and if memory serves you also append "video=radeonfb:1024x768-32@60" to get 3D acceleration working.

Hope some of this helps!

Regards,

Dan

--------------------------------------------
On Fri, 6/17/16, aggaz <aggaz@paranoici.org> wrote:

 Subject: Debian "Jessie" on Apple eMac 1.25 GHz PowerPC G4 (7447A) with ATI Radeon 9200 gives "Black Screen of Death"
 To: debian-powerpc@lists.debian.org
 Date: Friday, June 17, 2016, 12:30 AM
 
 Dear list,
 
 I have an Apple eMac 1.25 GHz PowerPC G4 (7447A) with ATI
 Radeon 9200.
 
 For several years I used Debian "Wheezy" on it without
 issues.
 
 Some day ago I upgraded to "Jessie" and graphics stopped
 working.
 
 I also tried to make a fresh install of Jessie that later I
 upgraded to
 "testing", but I always have the same problem.
 
 The problem is that after boot I have the so called "Black
 Screen of
 Death", which means that the monitor goes black and this is
 not related
 to Xorg, in fact I can not even see a shell prompt.
 
 I read everithing I could to fix it.
 
 I my understanding the problem is that new radeon drivers
 require KMS
 but KMS is for some reason not compatible with my machine.
 
 The only way to have an almost working screen is to disable
 radeon-kms
 either by adding to yaboot.conf the line:
 
 append="nomodeset"
 
 or in /etc/modprobe.d/radeon-kms.conf the line:
 
 options radeon modeset=0
 
 In both cases, I get a working console, but a messed up X.
 
 I see weird colors and X is ot usable.
 
 Now I read that I could fix it as described here by
 disabling
 open-firmware frame-buffer and using the driver fbdev, which
 is slow.
 
 So, my solution is to go back to wheezy.
 
 My questions:
 
 1. Am I missing something? Is there a way to use Jessie with
 radeon drivers?
 
 2. Where can I find a downloadable iso for Debian Wheezy
 PPC? It seems I
 can download only "Jessie" and testing.
 
 Thank you for your help, best regards.
 
 Francesco
 
 


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