Re: Debugging udev
On Sun, Jul 16, 2006 at 22:11:56 +0100, James Westby wrote:
> Hi,
>
> I have a problem which looks like it is udev (0.093-1) hanging at boot time.
> The messages it look something like
>
> [grub prompt]
> INIT version 2.86 booting
> Starting the hotplug events dispatcher...udevd.
> Synthesising initial hotplug events...done.
> Waiting until /dev is fully populated...
> [cursor blinks for a couple of seconds]
>
> Then boot will either continue normally or will hang before printing
> anything else. It actually stops rather than waiting forever as the
> cursor stops flashing. The only thing I can do is restart with the power
> button. Occaisonaly there will be one of four messages (from memory, in
> decreasing order of frequency)
>
> hdb: not ready for command.
> hda: not ready for command.
> hdb: DMA channel in use.
> hdb: timeout waiting for DMA.
>
> The intermittency leads me to think that it is some sort of race
> condition, and these messages suggest that it is perhaps involving the
> hard drives (hdb has my /).
Maybe it's a hardware problem (loose or broken cables, controller dying,
etc.)
--
Regards,
Florian
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