Home > Cannot Access > Ubuntu Cannot Access Hardware Clock

Ubuntu Cannot Access Hardware Clock


I figured somebody else would notice this and report it or fix it. A small amount of error creeps in any time hwclock sets the clock, so it refrains from making an adjustment that would be less than 1 second. VT82xxxxx UHCI USB 1.1 Controller uhci_hcd 0000:00:07.2: irq 10, io base 0000c800 uhci_hcd 0000:00:07.2: new USB bus registered, assigned bus number 1 The swap device (since it is on evms) should This allows calculating the exact number of seconds between two dates that cross a leap second epoch. http://rinfix.com/cannot-access/ubuntu-cannot-access-the-hardware-clock-via-any-known-method.html

What are you group memberships (id)? –muru Jul 5 '15 at 8:44 1 Those are unusual permissions for /dev/rtc0, especially the audio group, which seems completely irrelevant. Universal Time is now: Sat Jul 11 21:03:02 UTC 2009. Yes i upgraded from 8.04 server to 8.10 server Craig ***edit Please note this was a fresh install of 8.04 and then 8.10. Any one else running x86_64 rawhide notice this, too? -Steve Thread at a glance: Previous Message by Date: Libsoup troubles in rawhide (compat-libsoup22 needed) Matthias Clasen wrote: > Dan really went https://ubuntuforums.org/showthread.php?t=971027

Cannot Access The Hardware Clock Via Any Known Method Raspberry Pi

For example, on a Digital Unix machine: hwclock --setepoch --epoch=1952 -u, --utc --localtime Indicates that the Hardware Clock is kept in Coordinated Universal Time or local time, respectively. How to reply? The --localtime or --utc options give this information to the hwclock command.

Browse other questions tagged arch-linux not-root-user clock or ask your own question. more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science modprobe rtc-cmos Without rebooting, try and access the clock again with the hwclock command. No Usable Clock Interface Found. Trying to correct one drifting clock by using another drifting clock as a reference is akin to a dog trying to catch its own tail.

its not working (the time is not updated to the new time). Hwclock: Cannot Open /dev/rtc: No Such File Or Directory The zoneinfo database must be configured to use either posix or 'right', as described above, or by assigning a database path to the TZDIR environment variable. The Hardware Clock's purpose is to initialize the System Clock, so also keeping it in UTC makes sense. Instead, programs that care about the timezone (perhaps because they want to display a local time for you) almost always use a more traditional method of determining the timezone: They use

See also settimeofday(2). For linux, you might try using the hwclock(8) program, which has options to set system time to the hardware clock, and set the hardware clock to the system time. Note: currently this is not possible on most systems because hwclock --systohc is called at shutdown. With most configurations using 'cold' drift will yield favorable results.

  1. hwclock: Cannot access the Hardware Clock via any known method.
  2. Either --utc or --localtime must be specified when using this option. --adjfile=filename Overrides the default /etc/adjtime. -f, --rtc=filename Overrides the default /dev file name, which is /dev/rtc on many platforms but
  3. For other machines, it has no effect.
  4. Craig Adv Reply November 4th, 2008 #2 MJN View Profile View Forum Posts Private Message Visit Homepage Ubuntu addict and loving it Join Date Jan 2006 Location United Kingdom Beans
  5. This can lead to occasional confusion.

Hwclock: Cannot Open /dev/rtc: No Such File Or Directory

I don't know of any init scripts which do either of those > things, however. http://serverfault.com/questions/39356/why-is-the-time-messed-up-on-my-ubuntu-server-vps Another example is the kernel's NTP '11 minute mode'. Cannot Access The Hardware Clock Via Any Known Method Raspberry Pi Missing } inserted. \int dx = x + C & C# TBB updating metadata value Using the eval command twice How can the US electoral college vote be so different to Hwclock: Open Of /dev/rtc Failed: No Such File Or Directory The methods and software for drift correction are different for each of them.

See the discussion below, under The Adjust Function. -c, --compare Periodically compare the Hardware Clock to the System Time and output the difference every 10 seconds. weblink You issue a hwclock --set command to set the Hardware Clock to the true current time. [email protected]:/var/log$ sudo hwclock --localtime Cannot access the Hardware Clock via any known method. ISA Hardware Clock Century value There is some sort of standard that defines CMOS memory Byte 50 on an ISA machine as an indicator of what century it is. Cannot Access The Hardware Clock Via Any Known Method. + Linux

The adjtime file, while named for its historical purpose of controlling adjustments only, actually contains other information for use by hwclock in remembering information from one invocation to the next. Here's an example of my bug closing credentials: Look at Bug Killers: http://www.commit-digest.org/issues/2006-04-30/ Lex. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the http://rinfix.com/cannot-access/ubuntu-cannot-access-ppa.html When I -o loop mounted the initrd, the kernel didn't autoload loop.ko.

There is no difference between i386 and x86_64 in terms of the mechanisms available to load rtc. The Linux kernel has a mode wherein it copies the System Time to the Hardware Clock every 11 minutes. more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation

Hardware Clock, in its capitalized form, was coined for use by hwclock.

Therefore, when hwclock is told that it is in local time, it assumes it is in the 'correct' local time and makes no adjustments to the time read from it. This is a decimal integer. I expect someone else would know though. However, most systems are configured to exchange values between these two clocks at startup and shutdown.

Giovanni Novelli (giovanni-novelli) wrote on 2005-06-18: #33 (In reply to comment #29) > Those are two separate issues (this message, and the clock skew) Indeed, I see that fixing boot sequence Ubuntu manuals go Provided by: util-linux_2.27.1-6ubuntu2_i386 NAME hwclock - read or set the hardware clock (RTC) SYNOPSIS hwclock [function] [option...] DESCRIPTION hwclock is a tool for accessing the Hardware Clock. It works like this: hwclock keeps a file, /etc/adjtime, that keeps some historical information. his comment is here Thus, if you have one of these machines, hwclock cannot set the year after 1999 and cannot use the value of the clock as the true time in the normal way.

The "toy" in the option name refers to the Time Of Year facility of the machine. --srm This option is equivalent to --epoch=1900 and is used to specify the most common But don't be misled -- almost nobody cares what timezone the kernel thinks it is in. I eventually moved to another provider because GoDaddy wouldn't fix their clock. share|improve this answer edited Jul 11 '09 at 21:14 answered Jul 11 '09 at 19:12 Igal Serban 1,447106 i think its Xen –Tim Jul 11 '09 at 20:27

Here's a quick fix for your problem! Suppose you start with no adjtime file. There are two completely separate hardware devices running at their own speed and drifting away from the 'correct' time at their own rates. See the --getepoch option for details. --predict Predict what the RTC will read at time given by the --date option based on the adjtime file.

This mode (we'll call it "11 minute mode") is off until something turns it on. If the kernel timezone value is wrong, the vfat filesystem will report and set the wrong timestamps on files. Then when an application such as a World Clock needs the South_Pole timezone file; or an email MTA, or hwclock needs the UTC timezone file; they fetch it from the root The System Time is not an integer, though.

Note that when using this capability and the Hardware Clock timescale configuration is changed, then a reboot is required to notify the kernel. How does this sound? Is there any problem left in this bug that is neither already fixed nor related to module loading (which isn't a problem in util-linux)? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed