Public bug reported: == Comment: #0 - Chanh H. Nguyen <chngu...@us.ibm.com> - 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 <helle...@us.ibm.com> - 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: ubuntu Importance: Undecided Status: New ** Tags: architecture-ppc64le bugnameltc-120243 severity-medium targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-120243 severity-medium targetmilestone-inin--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1410604 Title: ISST-LTE: unable to open rtc device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1410604/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs