Bug 1082719 - hwclock error: ioctl(4, RTC_UIE_ON, 0): Invalid argument
hwclock error: ioctl(4, RTC_UIE_ON, 0): Invalid argument
Classification: openSUSE
Product: openSUSE Tumbleweed
Classification: openSUSE
Component: Kernel
Other Other
: P5 - None : Normal (vote)
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Reported: 2018-02-25 19:51 UTC by Petr Matula
Modified: 2018-03-02 07:43 UTC (History)
1 user (show)

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Description Petr Matula 2018-02-25 19:51:11 UTC
After longer time I upgraded Raspberry Pi from http://download.opensuse.org/ports/armv6hl/tumbleweed/repo/oss/suse/armv6hl/.

And I tried hwclock --debug with this message "ioctl(4, RTC_UIE_ON, 0): Invalid argument"

hwclock --debug
hwclock from util-linux 2.31.1
System Time: 1519587641.410491
Trying to open: /dev/rtc0
Using the rtc interface to the clock.
Last drift adjustment done at 1519578923 seconds after 1969
Last calibration done at 1519578923 seconds after 1969
Hardware clock is on UTC time
Assuming hardware clock is kept in UTC time.
Waiting for clock tick...
ioctl(4, RTC_UIE_ON, 0): Invalid argument
Waiting in loop for time from /dev/rtc0 to change
...got clock tick
Time read from Hardware Clock: 2018/02/25 19:40:43
Hw clock time : 2018/02/25 19:40:43 = 1519587643 seconds since 1969
Time since last adjustment is 8720 seconds
Calculated Hardware Clock drift is 0.000000 seconds
2018-02-25 19:40:42.526296+0000
Comment 1 Takashi Iwai 2018-03-02 07:43:45 UTC
AFAIK, this isn't supported on the platform, so the error is expected.