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On Wednesday, 2016-03-16 at 10:18 +0100, Michal Kubecek wrote:
On Tue, Mar 15, 2016 at 11:02:55PM +0100, Carlos E. R. wrote:

I see this activity in the log since I updated my 32b server machine
(on 13.1):

<0.6> 2016-03-15T22:16:00.928142+01:00 AmonLanc kernel - - - [39604.176042] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-03-15T22:16:03.620149+01:00 AmonLanc kernel - - - [39606.868059] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-03-15T22:16:03.904177+01:00 AmonLanc kernel - - - [39607.152036] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-03-15T22:16:04.188133+01:00 AmonLanc kernel - - - [39607.436027] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
...

Previous to the update, this happened 3 times per month.
Today, the log has rotated because of that and contains more than
60000 entries.

cer@AmonLanc:~> uname -a
Linux AmonLanc 3.12.53-40-default #1 SMP Thu Feb 25 06:26:23 UTC 2016 (b2ce64e) 
i686 i686 i386 GNU/Linux
cer@AmonLanc:~>

Please open a bug in bugzilla, assign it to me and attach output of

 lsusb -v
 lspci -v
 lsmod

and (if possible) the part of log from boot to first few of the messages
(there might be some clue preceding the first message).

(https://bugzilla.opensuse.org/show_bug.cgi?id=971387)

After update to kernel 3.12.57-44-default, this is still happening. To stop them, I do "rmmod uhci_hcd" which was harmless before but now impedes the UPS being detected.

<0.6> 2016-05-21T13:41:50.079256+02:00 AmonLanc kernel - - - [  321.720022] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:50.359261+02:00 AmonLanc kernel - - - [  322.000108] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:53.051256+02:00 AmonLanc kernel - - - [  324.692023] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:53.331256+02:00 AmonLanc kernel - - - [  324.972020] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:53.611258+02:00 AmonLanc kernel - - - [  325.252021] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:53.891254+02:00 AmonLanc kernel - - - [  325.532023] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:54.171253+02:00 AmonLanc kernel - - - [  325.812020] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:54.451255+02:00 AmonLanc kernel - - - [  326.092033] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:57.147257+02:00 AmonLanc kernel - - - [  328.788023] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:57.427257+02:00 AmonLanc kernel - - - [  329.068021] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:57.707257+02:00 AmonLanc kernel - - - [  329.348023] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:57.987253+02:00 AmonLanc kernel - - - [  329.628022] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:58.267254+02:00 AmonLanc kernel - - - [  329.908021] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:41:58.547255+02:00 AmonLanc kernel - - - [  330.188025] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:42:01.243256+02:00 AmonLanc kernel - - - [  332.884027] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:42:01.523251+02:00 AmonLanc kernel - - - [  333.164058] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:42:01.803253+02:00 AmonLanc kernel - - - [  333.444021] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd
<0.6> 2016-05-21T13:42:02.083269+02:00 AmonLanc kernel - - - [  333.724020] usb 
4-2: reset full-speed USB device number 2 using uhci_hcd

It happens about three times per second, it would fill the logs fast. I could fiter out the messages in syslog, but filtering systemd journal write is impossible.

Is there some other way to disable that USB interface? I want to monitor my UPS.

The messages only happen after login in graphics mode, so XFCE must be triggering them, trying to mount that PCMCIA.


It appears that doing a manual "modprobe uhci_hcd" after some minutes work. The UPS interface is detected, and the PCMCIA is not probed - so far.

- -- Cheers,
       Carlos E. R.
       (from 13.1 x86_64 "Bottle" at Telcontar)
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