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goku8499
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Joined: 20 Feb 2004
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 Posted: Thu Jun 29, 2006 4:22 am Post subject: Kernel 2.6.17 problems [solved] |
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I have a powerbook 17inch G4 1.33 ghz machine, that i must have wireless working on to use the net. i can't post my kernel config at all so i apologize for that. My problem is this VFS: Unable to mount root fs on unknown-block (0,0).
i loaded my config from 2.6.15-gentoo-r5 and added in the bcm43xx support. compiles fine. I don't know what is wrong and i have tried everything that i know of. Is there anyone out there that has this kernel running on their pbook that i can get the config from. Thank in advance.
Last edited by goku8499 on Thu Jun 29, 2006 6:19 am; edited 2 times in total |
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JoseJX
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| Posted: Thu Jun 29, 2006 4:25 am Post subject: |
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You should not use a 2.6.15 or earlier config with 2.6.16 or later. Make a new config with make pmac32_defconfig and tweak from there.
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Valkura
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goku8499
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| Posted: Thu Jun 29, 2006 6:18 am Post subject: |
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thank you to JoseJX for the tip. i have it working now and wireless support hope to have kde done soon ( yeah right  ) any way thank you again. |
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_savage
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| Posted: Mon Jul 10, 2006 5:47 am Post subject: |
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| JoseJX wrote: | | You should not use a 2.6.15 or earlier config with 2.6.16 or later. Make a new config with make pmac32_defconfig and tweak from there. |
Oh... that explains why a
from a 2.6.12 configuration to the 2.6.17 didn't really seem to work. Do you know why that is that you're not supposed to update a config this way? Too many changes in the kernek configuration syms?
What I used to do to get a useful .config file (about two years ago or so) was to boot from the latest install CD, and then grab the configuration from /proc/config.gz. Does that still function reliably?
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Jens Troeger
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JoseJX
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| Posted: Mon Jul 10, 2006 1:43 pm Post subject: |
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I hope you don't mind if I paste a link instead of typing it all again. :) But the short version is that the ARCH changed between 2.6.15 and 2.6.16. Using oldconfig in this situation is like using oldconfig from an x86 configuration. :p
http://forums.gentoo.org/viewtopic-t-458059.html
I still suggest using make pmac32_defconfig to generate a minimal config that should boot, and then tweaking it until it works. Once we have a release with kernel 2.6.16 or newer, you can go back to your old method.
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_savage
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| Posted: Thu Jul 20, 2006 4:50 pm Post subject: |
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| JoseJX wrote: | | I still suggest using make pmac32_defconfig to generate a minimal config that should boot, and then tweaking it until it works. Once we have a release with kernel 2.6.16 or newer, you can go back to your old method. |
It took some time to get from a generic pmac32_defconfig to what I actually wanted, but it seems to work now. The only thing I still haven't figured out though is why the kernel now kicks off both net.eth0 and net.eth1 before entering runlevel 3. Neither of the net interfaces is in my default init scripts anymore. How/where can I disable that behavior in the kernel config?
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JoseJX
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| Posted: Thu Jul 20, 2006 5:18 pm Post subject: |
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It's not the kernel. Most likely, you have something else that depends on the ethernet (perhaps sshd?) that's starting the network early.
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_savage
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| Posted: Thu Jul 20, 2006 5:42 pm Post subject: |
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I definitely do: apache2 and sshd and a few more. I'm just surprized that both interfaces are being brought up way before runlevel 3 is being entered.
I'll poke around a little bit, and see if I can find out something...
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Jens Troeger
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JoseJX
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| Posted: Thu Jul 20, 2006 7:11 pm Post subject: |
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Maybe I'm not understanding what you're trying to accomplish here? What exactly is happening? What do you expect it to do?
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_savage
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| Posted: Fri Jul 21, 2006 4:41 pm Post subject: |
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Until now, only net.eth0 was started because it's been activated as one of the default init scripts. So it came up after runlevel 3 was entered.
Now I'm running a new kernel and a much updated Gentoo version. It seems that there is a dependency of a boot init script (or whatever you call the init script that execute before runlevel 3) to networking. Even before runlevel 3 is entered, both network interfaces eth0 and eth1 are started, and that's what confuses me. Wireless is enough now (eth1), I don't need both to be up. It looks to me as if one of the boot init scripts now have a network dependency.
That's the question I have: how can I switch either one off? Do I have to go through all the init scripts to see which one actually has a dependency to the network?
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JoseJX
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_savage
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| Posted: Sun Jul 23, 2006 2:12 am Post subject: |
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| Code: | root@tigger ~ # rc-update show
alsasound | default
apache2 | default
bootmisc | boot
checkfs | boot
checkroot | boot
clock | boot
consolefont | boot
cpufreqd | default
famd | default
gpm | default
hostname | boot
hotplug | default
keymaps | boot
local | default nonetwork
localmount | boot
modules | boot
net.lo | boot
netmount | default
ntp-client | default
ntpd | default
pb-mouse-emulation | default
pbbuttonsd | default
pmud | default
rmnologin | boot
rngd | default
savage | default
serial | boot
shorewall | default
sshd | default
syslog-ng | default
urandom | boot
vixie-cron | default
xinetd | default |
Both net interfaces are initialized last in boot, and then runlevel 3 is being entered. I don't see a dependency in the scripts which would force the network to be brought up.
Something odd just happened though. Both interfaces are up, yet no network connection can be established anymore (didn't touch a thing, I swear!), and no nameserver can be found. Then I shut down both, and try to bring up either eth0 or eth1 with no success: no network access, although dhcp retrieves an IP. This is mighty flakey now...
I'm running 2.6.12 right now; network still functions fine here.
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Jens Troeger
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_savage
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| Posted: Mon Jul 24, 2006 3:34 am Post subject: |
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Oh one more thing: booting with a 2.6.12 kernel results in a different execution order of the init scripts than booting the 2.6.17 kernel. That's why I initially thought the eth0/eth1 is a kernel issue.
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Jens Troeger
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Nebvin
Tux's lil' helper
Joined: 10 Oct 2002
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Location: Alberta, Canada
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| Posted: Tue Jul 25, 2006 1:05 pm Post subject: |
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You will want to set this in /etc/conf.d/rc:
| Code: | | RC_PLUG_SERVICES="!net.*" |
That will stop your network interfaces from loading on their own
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Nebbie
"There are 10 types of people in the world, those that understand binary and those that don't." |
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_savage
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| Posted: Tue Jul 25, 2006 4:25 pm Post subject: |
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Oh thanks!
The next line in my rc config is the real culprit though, I think:
| Code: | | RC_NET_STRICT_CHECKING="no" |
Reading the comment above that line, "no" here means that at least one of the network services (besides net.lo) has to be up. Setting this to "lo" will bring up net.lo only and no other of the network services.
I'll try both 
EDIT: If I set them to
| Code: | RC_PLUG_SERVICES="net.eth1 !net.*"
RC_NET_STRICT_CHECKING="no" |
then only the wireless interface is coming up right before runlevel 3 is entered. Seems to work now.
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Jens Troeger
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_savage
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| Posted: Tue Jul 25, 2006 4:43 pm Post subject: |
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| _savage wrote: | | Setting this to "lo" will bring up net.lo only and no other of the network services. |
Nope, misread the comment. Leave that to "no" and disabling all services with "!net.*" works great.
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