Hi All,
I tried to do settimeofday in a C program running in Linux for Tegra on a TX2, but when I do gettimeofday right away in my program, the time is unchanged from when I did gettimeofday before doing settimeofday. I am using printf()s to output tv.tv_sec, where tv is the timeval type. I found this post: ubuntu - settimeofday function can't change time - Unix & Linux Stack Exchange and found that I have systemd-timesyncd.service running. I stopped it by doing “sudo systemctl stop systemd-timesyncd.service” and verified that it was inactive. I still couldn’t change the time.
I did:
$ ps -ef | grep time and got (UID redacted):
7576 6683 0 17:40 ? 00:00:01 /usr/lib/aarch64-linux-gnu/indicator-datetime/indicator-datetime-service
9755 9733 0 19:51 pts/0 00:00:00 systemctl status systemd-timesyncd
9922 9733 0 21:09 pts/0 00:00:00 systemctl status systemd-timesyncd
10001 9733 0 21:51 pts/0 00:00:00 systemctl status systemd-timesyncd
10092 9733 0 22:19 pts/0 00:00:00 systemctl status systemd-timesyncd
10132 9733 0 22:45 pts/0 00:00:00 grep --color=auto time
The column order above is:
PID PPID C STIME TTY TIME CMD
I killed all of those process and then still got:
$ ps -ef | grep time
9755 9733 0 19:51 pts/0 00:00:00 systemctl status systemd-timesyncd
9922 9733 0 21:09 pts/0 00:00:00 systemctl status systemd-timesyncd
10001 9733 0 21:51 pts/0 00:00:00 systemctl status systemd-timesyncd
10092 9733 0 22:19 pts/0 00:00:00 systemctl status systemd-timesyncd
10163 9733 0 22:59 pts/0 00:00:00 grep --color=auto time
I still couldn’t change the time. Does anyone have any ideas? Thanks in advance for your help.
Edit: It reads back unchanged so quickly in the next line of code it’s as if the time was not writable.
Best regards,