Help; system date goes to GMT hour when I hibernate
On Mon, Apr 06, 2015 at 11:01:47AM -0400, James Knott wrote
On 04/06/2015 02:31 PM, Walter Dnes wrote:
You may want to check your clock. You apparently sent this message about 3.5 hours from now. Or perhaps you were just being proactive. ;-)
Actually, it was 4 hours. I have a bunch of spreadsheets, browser tabs, etc, open all the time, scattered over various work areas. Rather than re-open them every day, I simply hibernate, using suspend-to-disk. This way, things are where I left them. The past couple of months, when the machine comes up from hibernation, the clock is a few hours ahead. Now it's 4 hours ahead. It was 5 hours ahead before the switch to daylight savings time. This looks suspiciously like GMT. After reading your email, I dug deeper. Apparently, it's just the "kernel system time" that gets bumped forward when it comes up from hibernation. The BIOS clock is OK. As a heavy-handed hack, I've inserted the line... OnResume 01 hwclock --hctosys ...into my /etc/hibernate/hibernate.conf. This copies over the BIOS time to the kernel system date. It works, but I'd really like to know why it's necessary in the first place. -- Walter Dnes <waltdnes@waltdnes.org>
On 04/06/2015 11:48 AM, Walter Dnes wrote:
You may want to check your clock. You apparently sent this message
about 3.5 hours from now. Or perhaps you were just being proactive. ;-) Actually, it was 4 hours.
It was 3.5 hours from the time I posted. While looking at your message headers, I could see it was UTC, which is, at this time of the year, 4 hours ahead.
After reading your email, I dug deeper. Apparently, it's just the "kernel system time" that gets bumped forward when it comes up from hibernation. The BIOS clock is OK. As a heavy-handed hack, I've inserted the line...
I have my computers configured to use NTP to get accurate time. My notebook computer often is in hybernation, but I've never seen this time issue.
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James Knott -
Walter Dnes