Questions relating to time and timezones.

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13
votes
3answers
7k views

Why does time change in Ubuntu after installing Windows [duplicate]

Today I was installing Windows 7 on the same computer I have Ubuntu. For some reason, after installing Windows 7 and going back to Ubuntu the time went from the correct hour at that moment, 12:30PM to ...
4
votes
1answer
3k views

How to change system time or force a sync with hardware clock

My laptop is probably running out of CMOS battery, I know I have to fix it soon, but until then, this very annoying issue keeps me from using it. Scenario: My system clock is reset to 15/12/08 11:00 ...
25
votes
3answers
33k views

How do I change my timezone to UTC/GMT?

Currently when I execute the date command from bash I get the following displayed Thu May 17 12:21:00 IST 2012 Below is my timezone config based on executing dpkg-reconfigure tzdata Current ...
15
votes
5answers
30k views

How do you set the timezone for crontab?

I have set up ACPI wakeup so my laptop wakes up at a certain time each morning. The timezone for this is UTC. I want to set up my crontabs also using UTC so they fit with the wakeup alarm. How do ...
0
votes
0answers
278 views

Boot takes long time: “switching to clocksource tsc ”

I am working on Pxeboot server. I installed Pxeboot server in one virtual machine and I start my Pxeboot client it takes time to boot while it got this message "switching to clocksource tsc" How to ...
5
votes
1answer
2k views

How to change “inode change time” of a file?

I tried to use touch -d "2011-09-15 16:50" test.txt but it just modifies the last access time and the last modified time. Access: 2011-09-15 16:50:00.000000000 +0700 Modify: 2011-09-15 ...
0
votes
4answers
793 views

How can I change the en_AU locale to 12 hour format?

I've noticed that the en_AU locale is defaulting to 24 hour time, it should be 12 hour as this is most commonly used in Australia. How can this be adjusted?
4
votes
1answer
10k views

ntpd vs ntpdate: pros and cons

In order to keep the time accurate on a Ubuntu system one can either: Run the ntpd (network time protocol daemon) which will run all the time and continuously adjust the system time when clocks ...
15
votes
2answers
24k views

Where does ntpdate get its settings from and what is the “no servers can be used” error about?

When I run ntpdate on its own, I get the following output: 8 Jun 15:47:46 ntpdate[31251]: no servers can be used, exiting If I run it with the -q ntp.ubuntu.com switch, it seems to query just ...
6
votes
3answers
3k views

How can I force Ubuntu to use the BIOS internal clock instead of NTP or whatever its being used?

My clock starts running out of sync in Ubuntu which doesn't happen in Windows. The problem is that it just starts losing time after a moment of syncing it with an NTP server, that means the clock is ...
6
votes
1answer
605 views

Intense hard drive access activity immediately after log in

I upgraded my ubuntu karmic to lucid a few months ago. I don't know when it all started but the thing is that when I log in, I see a very intense disk access activity for a while that prevents any ...
2
votes
1answer
60 views

clock dissapeared from menu

As you can see from the screenshot, I am missing date and time from top menu. Is it stupid april fools joke or...? I am clueless how to put it back. Any help would be appreciated. EDIT Tried the ...
2
votes
3answers
737 views

How do I set the time?

System Settings -> Date and Time. This dialog allows to set time zone and date, but doesn't allow to set the time. How can I change the time?
1
vote
2answers
288 views

System time off by a small amount

On Karmic (9.10), my system time is currently off by 17 minutes, e.g. when I type date on the terminal I get Thu Jan 6 16:22:29 CST 2011 while the correct time is 16:05pm. I went through the standard ...
0
votes
4answers
804 views

“Date and Time Settings” GUI in Ubuntu 14.04 is not working?

I have been trying to access the Date and Time setting in my Ubuntu 14.04 to modify the time (which is wrong). I click in the hour in the top-right corner of the top bar, and then in "Date & Time ...