kernel-packages team mailing list archive

[Launchpad Bug Tracker <1410604@xxxxxxxxxxxxxxxxxx>]

You have been subscribed to a public bug:

== Comment: #0 - Chanh H. Nguyen <chnguyen@xxxxxxxxxx> - 2015-01-09 17:30:08 ==
We use DVD to install Ubuntu 15.04 kernel 3.18.0-8-generic version on our PowerVM system. After install, I am seeing this error "/build/buildd/linux-3.18.0/drivers/rtc/hctosys.c: unable to open rtc device" on the dmesg log...

root@pole1lp3:~# uname -a
Linux pole1lp3 3.18.0-8-generic #9-Ubuntu SMP Mon Jan 5 22:52:15 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux
root@pole1lp3:~# dmesg |grep rtc
[    0.556763] /build/buildd/linux-3.18.0/drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    3.296241] rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0
root@pole1lp3:~#

== Comment: #2 - David Heller <hellerda@xxxxxxxxxx> - 2015-01-13 20:53:50 ==
It must be an order of operations thing: something is trying to do the hctosys before the driver is loaded. A few seconds later the driver loads and it seems fine after that.

root@pole1lp3:~# dmesg | grep rtc
[    0.551202] /build/buildd/linux-3.18.0/drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    3.353719] rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0

root@pole1lp3:~# find /dev -name \*rtc\*
/dev/rtc
/dev/rtc0

root@pole1lp3:~# hwclock
Tue 13 Jan 2015 07:36:15 PM CST  -0.779773 seconds

root@pole1lp3:~# hwclock --hctosys

root@pole1lp3:~# date
Tue Jan 13 19:38:05 CST 2015

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Triaged


** Tags: architecture-ppc64le bot-comment bugnameltc-120243 severity-medium targetmilestone-inin1604 vivid
-- 
ISST-LTE: unable to open rtc device
https://bugs.launchpad.net/bugs/1410604
You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.