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qednet
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Joined: 11 Feb 2015
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PostPosted: Wed Feb 11, 2015 7:10 am    Post subject: G5 Nightmare! Reply with quote

Ok so someone should mod the Gentoo ppc manual to note that JFS is not supported by yaboot. I'm sure I'm not the first to be caught out by that sucker.

Second, getting a new kernel to boot is such a pain in the arse. So far I have built the default kernel, a modded version of a previous successful build and my own instinctive selection and they all crash after the initial white screen (returning from eeprom or similar). One suggestion seems to be the nuveau module is the culprit but what else are we supposed to use with our nvidia ppc's?

This isn't specific to gentoo, I've had the same issue with a debian install but I've wasted a week trying difference kernels. Maybe it's the 64bit arch but I've never had these problems installing linux on the ppc before.

It seems unfortunate since the G5's are a dime a dozen these days but they still have a great build quality.
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qednet
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Joined: 11 Feb 2015
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PostPosted: Wed Feb 11, 2015 10:22 am    Post subject: Reply with quote

So just to add to my carbon footprint I have cracked a kernel config that does boot successfully, based on the G5 default included in the gentoo source package. Here's that bit of the process

code//
cd /usr/src/linux-3.12.35-gentoo
make g5_defconfig

(then)

make && make modules_install
//code

HOWEVER! This kernel behaves very strangely. The default has NO support for JFS, which I am still using after I repartitioned my drive to include a ext2 /boot partition, so I had to load the config and add JFS support.

2nd foible is there is no network??? My thoughts were the Sun GEM module was loaded or built in (they are) but it just doesn't seem to talk to it. I'm chasing that, but it seems the default G5 config leaves a bit to be desired, still at least it boots :)
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qednet
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Joined: 11 Feb 2015
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PostPosted: Wed Feb 11, 2015 12:18 pm    Post subject: Reply with quote

OK, its officially a pain in the arse now. I've tracked down the ethernet problem to a misnamed interface, possibly by udev. My eth0 has become enP1p3s15f0 - try saying that after a few beers!
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qednet
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Joined: 11 Feb 2015
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PostPosted: Wed Feb 11, 2015 12:53 pm    Post subject: Reply with quote

And the fix for the ethernet is here

http://wiki.gentoo.org/wiki/Udev/upgrade#Fixing_network_interfaces

Clunky, but it works. Greater minds might get to the bottom of it.

Still worried about the kernel, it hangs for about 20 seconds and then again for about a minute. I'll post dmesg when I get a browser working

That was 12 hours I will never get back....A debian install would have taken 30 minutes ;)
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