Bug#790561: After upgrading udev from 215-18 to 220-7 or 221-1, the system is unbootable afterwards

[Michael Biebl]

Am 30.06.2015 um 22:53 schrieb Klaus Ethgen:
> Am Di den 30. Jun 2015 um 20:22 schrieb Michael Biebl:
>> Booting with udev.log-priority=debug udev.children-max=1 on the kernel
>> command line should give you a more verbose log. Please attach that.
> 
> I did that. And it seems that the bug does not happen with that
> settings.
> 
> It just take over 10 minutes for all that messages to scroll over the
> screen. Unfortunately, the messages gets not written anywhere so there
> is no way to attach them to a mail.

With systemd, those early boot messages would end up in the journal.

I don't use sysvinit anymore, so I don't know if there is a way to get
early boot message but you could probably hack the /etc/init.d/udev sysv
init script and add
"export SYSTEMD_LOG_TARGET=console" before the systemd-udevd daemon is
started and redirect stderr of the daemon to a file in /run (which
should be a tmpfs and writable early during boot).

 Maybe I can film the boot screen
> with all that messages and send you the movie about it. That is the only
> idea that I have to provide you with that informations.

I don't think that would be particularly helpful.

> However, I'll attach you the dmesg from that boot try and a clean dmesg
> from a good udev. In the last one I mark the position where new udev
> breaks. (Note that the order of the messages is completely different
> between the two dmesg outputs.)
> 
> Please note also that I get different counts of the following messages with
> every boot:
>    usb 2-3.2: device descriptor read/64, error -110
>    usb 8-3.2: device descriptor read/64, error -110
>    usb 8-3.2: device descriptor read/64, error -110
>    usb 8-3.2: device descriptor read/64, error -110

I don't see anything relevant in those logs.
I'm a bit confused though: how can you get a dmesg output from a "bad"
boot, when the system did not boot?

-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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