Cannot boot Debian Testing netinst on a PowerMac G5, vertical blue stripes

[Michal Krzysztof Feiler]

Hello,

I am currently trying to install GNU/Linux on my PowerMac G5 alongside
macOS 10.5.8.

tl;dr: this whole paragraph is solely about Fedora, skip to the next one ---
I've been trying Fedora25, but the graphical installer requires more RAM
(I have just 1GB, though waiting for the delivery of 4GB for upgrade),
and the text-only installer first crashed on something related to the
macOS HDD (https://bugzilla.redhat.com/show_bug.cgi?id=1368932), and
after unplugging it it had some problems with the mirrors, as neither
the "Closest mirror" nor "https://"→"https://archive.fedoraproject.org/
pub/fedora-secondary/releases/25/Everything/ppc64/os/" (nor "http://" → "",
that one causes https://bugzilla.redhat.com/show_bug.cgi?id=1368932)
worked (the following option regarding the software choice still could
not proceed).

So I've decided to try Debian. I've downloaded
http://gemmei.acc.umu.se/cdimage/weekly-builds/powerpc/iso-cd/
debian-testing-powerpc-netinst.iso to my PowerMac, checked the checksum,
burned it with Disk Utility (with verification) and booted it up by
pressing C during boot, as usual. After the usual gray screen, the
screen that followed was a black screen with iirc one-pixel blue strips
equally spaced every one to four millimeters (1280×1024 19"). As the
G5s, when their cooling is not controlled by software, speed up to
maximum after some timeout, and then the unit turns off after some more,
this is what follows (the same would happen with a working Fedora
install if I would not run `modprobe i2c-powermac` and possibly also
`modprobe rack-meter` soon enough).

Any ideas?

Cheers,

Michael

P.S. BTW, that's my first message on Usenet ;)

P.P.S. I doubt that it will help, but I will also try stable 8.6.0,
exactly as described in what I am trying to follow:
https://github.com/masterzorag/G5_ppc64-linux

--
Michał Krzysztof Feiler
archiet.platinum.edu.pl
google.com/+MichałKrzysztofFeiler
github.com/ArchieT

[Ant]

Also, try asking in http://forums.debian.net/ ... :) I really should try
this on my very old 15" PowerBook G4 1 Ghz with its Mac OS X v10.2.8. :(

Michal Krzysztof Feiler <arc...@platinum.edu.pl> wrote:
> Hello,

> I am currently trying to install GNU/Linux on my PowerMac G5 alongside
> macOS 10.5.8.

> tl;dr: this whole paragraph is solely about Fedora, skip to the next one ---
> I've been trying Fedora25, but the graphical installer requires more RAM
> (I have just 1GB, though waiting for the delivery of 4GB for upgrade),
> and the text-only installer first crashed on something related to the
> macOS HDD (https://bugzilla.redhat.com/show_bug.cgi?id=1368932), and
> after unplugging it it had some problems with the mirrors, as neither

> the "Closest mirror" nor "https://"???"https://archive.fedoraproject.org/
> pub/fedora-secondary/releases/25/Everything/ppc64/os/" (nor "http://" ??? "",

> that one causes https://bugzilla.redhat.com/show_bug.cgi?id=1368932)
> worked (the following option regarding the software choice still could
> not proceed).

> So I've decided to try Debian. I've downloaded
> http://gemmei.acc.umu.se/cdimage/weekly-builds/powerpc/iso-cd/
> debian-testing-powerpc-netinst.iso to my PowerMac, checked the checksum,
> burned it with Disk Utility (with verification) and booted it up by
> pressing C during boot, as usual. After the usual gray screen, the
> screen that followed was a black screen with iirc one-pixel blue strips
> equally spaced every one to four millimeters (1280×1024 19"). As the
> G5s, when their cooling is not controlled by software, speed up to
> maximum after some timeout, and then the unit turns off after some more,
> this is what follows (the same would happen with a working Fedora
> install if I would not run `modprobe i2c-powermac` and possibly also
> `modprobe rack-meter` soon enough).

> Any ideas?

> Cheers,

> Michael

> P.S. BTW, that's my first message on Usenet ;)

> P.P.S. I doubt that it will help, but I will also try stable 8.6.0,
> exactly as described in what I am trying to follow:
> https://github.com/masterzorag/G5_ppc64-linux
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