Hi Claudia,
perhaps there is a misunderstanding. I'm trying Debian 12 ppc64
Big-Endian.
My suggestion to you is to try the proposed fix from the fienixppc team.
I report here what is mentioned in their article (I copy only what is of
interest to you).
```
[...]
the system shows only a black screen, a black screen with a cursor, or
a garbled image:
These issues are caused by driver configuration issues. Try entering the
below boot parameters when you see the yaboot prompt (when booting up
your system).
Radeon GPU
[...]
If you have a Radeon GPU, try entering the following boot parameters
(one at a time, must be entered EXACTLY as listed):
"Linux radeon.modeset=1 video=offb:off nomodeset"
"Linux radeon.agpmode=-1 radeon.modeset=1 video=offb:off nomodeset"
```
In other words, using grub, try to add to the command line paramenters
"radeon.modeset=1 video=offb:off nomodeset" or
"radeon.agpmode=-1 radeon.modeset=1 video=offb:off nomodeset"
In my particular case, my iMac has an Nvidia card, therefore I tried
another set of parameters. For me, it did not help. But you are using
a different card with a different driver. It might be of help.
On 2024-01-23 15:53, Claudia Neumann wrote:
Hi Federico,
if it didn't work for you, I would rather try with Debian.
CU
Claudia
Am Dienstag, 23. Januar 2024, 15:05:06 CET schrieb Federico Vaga:
Hi Claudia and all,
this is a very interesting coincidence. I've started trying a couple
of
days
a go to install Debian 12 on the same iMac.
In my case, I'm booting the netinst image from USB but the kernel
crashes
somewhere. The screen is not refreshed after a few kernel messages,
so I
was
not able to debug any further.
On the web I've found this project https://fienixppc.blogspot.com/
and I
their
suggestion about a video driver misconfiguration and a possible
solution.
See https://fienixppc.blogspot.com/p/troubleshooting-of.html
None of the options, helped me. But I did not try to investigate
more
since
then. Perhaps you will have better luck :)
On 2024-01-23 14:54, Claudia Neumann wrote:
> Hi all,
> I have an iMac G5, PowerMac 12,1 PPC970FX, Platform: PowerMac 12,1
> MacRISC4 Power Macinstosh, Memory 1GB+384MB.
> I had installed Ubuntu 16.04.7 LTS and it was running fine. Now I
need
> newer libc and so on. So I wanted to install Debian 12 or even
Debian
> 13 on this iMac.
> Is that possible? I tried
>
> debian-12.4.0-ppc64el-netinst.iso
> but the iMac does not start from the DVD.
> What can I do?
> CU
> Claudia
--
Federico Vaga
--
Federico Vaga
http://www.federicovaga.it/
