Re: Bug#333522: udev: modules randomly aren't loaded at startup - "Unknown symbol"
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On Wed, 12 Oct 2005 13:06:18 +0200
md@Linux.IT (Marco d'Itri) wrote:
> On Oct 12, Jan Taegert <jan@cosmopilot.net> wrote:
>
> > after upgrading udev from 0.070-2 to 0.070-4 modprobe is giving out
> > error messages to console output on system startup. Normally the
> > concerning modules seem to work correctly, but from time to time
> > they aren't loaded at all. I attached the last dmesg-output to
> > document this (this time ehci_hcd was'n loaded).
> This is probably a kernel bug, the module-init-tool author provided
> some advice to debug it in #333052 but I had no time yet to try. Can
> you?
>
> > Anotation #1: Until now, the "bad" modules always are out of the
> > categories usb (uhci/ehci-hcd), serial (8250/8250_pnp?) and alsa
> > (snd_...), all attached to onboard devices (via chipset)
> On my system it usually happens to the the hcd and 8250 modules.
>
> > Anotation #2: I'am using a home-backed vanilla-kernel 2.6.13 without
> > initrd. For testing purposes I tried the experimental 2.6.13
> > kernel-package and ... all mentioned problems are gone! I dont't
> > think that this a nice solution, but maybe my problems have
> > someting to do with this difference.
> Interesting... I use a vanilla 2.6.13 myself as well.
> I think it would be useful to try with the debian 2.6.13 source and a
> custom kernel without the initramfs.
You could also test with a yaird-baked initramfs instead of one made
using initramfs-tools.
No, this is not meant as advertising for yaird (it has its own set of
problems!), but initramfs-tools includes udev on the ramdisk (I
believe), and yaird does not. So for debugging this yaird sounds
relevant.
Oh - and now I think about it: If I am right that udev gets included on
initramfs-tools-based ramdisks, have you tried regenerating the ramdisk
(with initramfs-tools) after the udev update?
Kind regards,
- Jonas
- --
* Jonas Smedegaard - idealist og Internet-arkitekt
* Tlf.: +45 40843136 Website: http://dr.jones.dk/
- Enden er nær: http://www.shibumi.org/eoti.htm
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