[linux-3.2] watchdog: error registering /dev/watchdog

Rolinh · 2012-01-22 14:40:32

I had the same problem on my Thinkpad T420. Blacklisting MEI fixed the issue, thanks to you.

EDIT: I do not use testing repos

EDIT2: wow, it seems that this leads to major power regression (like 2 hours less autonomy on my laptop). Is it possible? What is the mei module anyway?

Last edited by Rolinh (2012-01-22 14:54:20)

Morlab · 2012-01-22 15:34:47

I noticed the same problems with MEI driver and power consumption on my Lenovo X220, but I am not sure if they are related.

laloch · 2012-01-22 15:36:15

Rolinh wrote:

EDIT2: wow, it seems that this leads to major power regression (like 2 hours less autonomy on my laptop). Is it possible? What is the mei module anyway?

Normally I would say that the MEI is a part of Intel Active Management Technology which is basically a remote management solution present in vPro chipsets and as such has nothing to do with power consumption. *But* my experience is that when I disable the AMT completly via BIOS setup, I loose even the builtin i5 mobile CPU frequency scaling features. ...Anyone from Intel here? :-)

Rolinh · 2012-01-22 16:40:49

Thanks for your answer. Well, I did a research about mei but I thought it could not be related. However, I unblacklisted the module (so I get the error at boot again now) but I regained the 2 hours I had lost. I did not change anything else. Pretty weird...

laloch · 2012-01-22 19:04:50

You can still blacklist the other watchdog driver (probably the iTCO_wdt module) to get rid of the error message.

Rolinh · 2012-01-23 07:35:25

Ok, I'll have a look at that. Thanks.

JamieKitson · 2012-01-26 07:42:39

I have the same issue. If I blacklist iTCO_wdt I just get a different error message with the same 25 second pause:

Thu Jan 26 07:37:43 2012: :: Waiting for UDev uevents to be processed [BUSY] udevd[145]: worker [163] timeout, kill it
Thu Jan 26 07:37:43 2012:
Thu Jan 26 07:37:43 2012: udevd[145]: seq 1219 '/devices/pci0000:00/0000:00:1c.1/0000:03:00.0' killed
Thu Jan 26 07:37:43 2012:
Thu Jan 26 07:37:43 2012: udevd[145]: worker [163] terminated by signal 9 (Killed)

JamieKitson · 2012-01-26 07:46:09

Actually I seem to get that whether I blacklist iTCO_wdt or not.

Last edited by JamieKitson (2012-01-26 07:48:18)

Sidhartha · 2012-01-26 20:19:10

Same here... What is the current answer to this? I'm concerned about implementing a solution that is going to cost be battery time...

laloch · 2012-01-26 21:30:56

Jamies problem is IMO completely unrelated.

Gusar · 2012-01-26 21:34:59

laloch wrote:

Jamies problem is IMO completely unrelated.

Yep. This, probably: https://bbs.archlinux.org/viewtopic.php?id=134012

As for the watchdog error... Have you guys thought about simply ignoring it? If you otherwise don't see any issues with the machine, watchdogs aren't really that critical to have. Unless it's about a server that's quite a bit away from your current position.

laloch · 2012-01-26 21:44:03

Gusar wrote:

Have you guys thought about simply ignoring it? If you otherwise don't see any issues with the machine, watchdogs aren't really that critical to have. Unless it's about a server that's quite a bit away from your current position.

Yep, you are right. I don't understand them either. I bet no one is running watchdogd anyway.

JamieKitson · 2012-01-26 22:22:46

Gusar wrote:

laloch wrote:
Jamies problem is IMO completely unrelated.
Yep. This, probably: https://bbs.archlinux.org/viewtopic.php?id=134012

Yes it was, thanks.

Gusar · 2012-01-26 22:29:06

laloch wrote:

I don't understand them either.

It's an OCD "must get rid of all errors!" thing. Quite an amusing phenomenon.

mini · 2012-02-17 17:19:36

Is there any solution here? I still have this error.

Lars Stokholm · 2012-02-17 21:45:05

mini wrote:

Is there any solution here? I still have this error.

Apparently we're obsessing. Anyway, I finally created a bug report upstream.

mini · 2012-04-17 19:23:09

Any news here

teateawhy · 2012-05-07 16:15:53

bump: affected, too

Sara · 2012-05-24 02:18:22

I just disabled the mei module in my kernel config as suggested here, and I didn't notice a power regression, so for me, that was the solution to this problem.

Last edited by Sara (2012-05-24 02:18:51)

feNNec · 2012-08-26 12:45:50

xr4y wrote:

Lars, I had the same problem on my Thinkpad x220i.
From the /var/log/errors.log
Jan 20 11:12:50 localhost kernel: [    4.888313] watchdog: error registering /dev/watchdog (err=-16).
Jan 20 11:12:50 localhost kernel: [    4.888377] mei: unable to register watchdog device.
Blacklisting mei:
echo blacklist mei > /etc/modprobe.d/mei.conf
No more errors during boot!

+1 with Thinkpad x220i

Arch Linux

#26 2012-01-22 14:40:32

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#27 2012-01-22 15:34:47

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#28 2012-01-22 15:36:15

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#29 2012-01-22 16:40:49

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#30 2012-01-22 19:04:50

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#31 2012-01-23 07:35:25

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#32 2012-01-26 07:42:39

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#33 2012-01-26 07:46:09

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#34 2012-01-26 20:19:10

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#35 2012-01-26 21:30:56

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#36 2012-01-26 21:34:59

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#37 2012-01-26 21:44:03

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#38 2012-01-26 22:22:46

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#39 2012-01-26 22:29:06

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#40 2012-02-17 17:19:36

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#41 2012-02-17 21:45:05

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#42 2012-04-17 19:23:09

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#43 2012-05-07 16:15:53

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#44 2012-05-24 02:18:22

Re: [linux-3.2] watchdog: error registering /dev/watchdog

#45 2012-08-26 12:45:50

Re: [linux-3.2] watchdog: error registering /dev/watchdog

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