EWF + "Automatically adjust clock for daylight saving changes"

Discussion in 'Windows XP Embedded' started by Guest, Dec 9, 2005.

  1. Guest

    Guest Guest

    If EWF is active and you select "Automatically adjust clock for daylight
    saving changes" in “Date and Time Properties / Time Zone†then everything is
    ok till time comes for automatic clock adjustment. Then the time is adjusted
    not only once but on every reboot. This happens till you execute “ewfmgr c:
    -commitâ€. Then everything is ok till the next clock adjustment and so forth.
    Is there a solution available except disabling this functionality?
     
    Guest, Dec 9, 2005
    #1
    1. Advertisements

  2. Hi Gunter. This is a known issue with EWF, and the best available
    workaround is to disable the auto-adjust option and adjust the time
    manually, or base the machine's time on GMT.

    --
    Matt Kellner ()
    STE, Windows Embedded Group

    This posting is provided "AS IS" with no warranties, and confers no rights.
    ===============================

    "Günter" <> wrote in message
    news:...
    > If EWF is active and you select "Automatically adjust clock for daylight
    > saving changes" in "Date and Time Properties / Time Zone" then everything
    > is
    > ok till time comes for automatic clock adjustment. Then the time is
    > adjusted
    > not only once but on every reboot. This happens till you execute "ewfmgr
    > c:
    > -commit". Then everything is ok till the next clock adjustment and so
    > forth.
    > Is there a solution available except disabling this functionality?
     
    Matt Kellner \(MS\), Dec 9, 2005
    #2
    1. Advertisements

  3. "Matt Kellner (MS)" <> wrote in message
    news:uBPTjnR$...
    > Hi Gunter. This is a known issue with EWF, and the best available
    > workaround is to disable the auto-adjust option and adjust the time
    > manually, or base the machine's time on GMT.


    Since someone brought this up, is there any way in any Windows version to
    tell it to offset the Windows system time from the RTC -- which is UTC?
    Every Windows version seems to require you to assume the RTC is local, and
    the Windows system time is to be synchronized with.

    If so, that would remove this issue entirely, because the Windows system
    would dynamically off-set at run-time (including handling daylight savings
    appropriately based on a static configuration setting and the current date),
    and never touch the RTC (except for corrections). That would make it act
    like UNIX systems (which pretty much always offset dynamically per user,
    because they were designed as timeshare systems and the users weren't always
    local to the system).

    I only vaugely remember an utility on the NT 4.0 Resource Kit that
    supposedly did this, but I can't remember. Just curious if one exists
    (especially for XPE, but also XP/2003 in general).
     
    Bryan J. Smith, Dec 10, 2005
    #3
  4. Hi,

    There is a full workaround if you are making custom shell that show and use time:
    http://groups.google.com/group/micr...250fab5463c/fb387139782a5cc3#fb387139782a5cc3
    http://groups.google.com/group/micr...0b5d645c55b/cf36922fb4c897ee#cf36922fb4c897ee

    http://groups.google.com/group/micr...lic.windowsxp.embedded&q=ewf+daylight+&qt_g=1

    Regards,
    Slobodan

    "Bryan J. Smith" <> wrote in message news:OJDCeZS$...
    > "Matt Kellner (MS)" <> wrote in message
    > news:uBPTjnR$...
    > > Hi Gunter. This is a known issue with EWF, and the best available
    > > workaround is to disable the auto-adjust option and adjust the time
    > > manually, or base the machine's time on GMT.

    >
    > Since someone brought this up, is there any way in any Windows version to
    > tell it to offset the Windows system time from the RTC -- which is UTC?
    > Every Windows version seems to require you to assume the RTC is local, and
    > the Windows system time is to be synchronized with.
    >
    > If so, that would remove this issue entirely, because the Windows system
    > would dynamically off-set at run-time (including handling daylight savings
    > appropriately based on a static configuration setting and the current date),
    > and never touch the RTC (except for corrections). That would make it act
    > like UNIX systems (which pretty much always offset dynamically per user,
    > because they were designed as timeshare systems and the users weren't always
    > local to the system).
    >
    > I only vaugely remember an utility on the NT 4.0 Resource Kit that
    > supposedly did this, but I can't remember. Just curious if one exists
    > (especially for XPE, but also XP/2003 in general).
    >
    >
     
    Slobodan Brcin \(eMVP\), Dec 11, 2005
    #4
  5. Guest

    Guest Guest

    Thanks for your replies :)

    Heres Lyndas answer:

    This is a problem that has been often discussed, and we are looking at
    possible solutions to this for the next XPe release. However at this stage
    there is no real solution other than disabling EWF, making the change and
    committing it.
    Some customers have reported their workarounds such as this one reported in
    the newsgroup:

    http://groups.google.com/group/micr...29d?q=daylight+savings&rnum=2#378bffca5b21729
    http://groups.google.com/group/micr...d8?q=daylight+savings&rnum=3#9c853050abbd2ed8

    Regards,
    Günter
     
    Guest, Dec 12, 2005
    #5
    1. Advertisements

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Richard Thomissen

    EWF and Automatically adjust clock for daylight saving

    Richard Thomissen, Nov 20, 2003, in forum: Windows XP Embedded
    Replies:
    5
    Views:
    2,251
    Doug G
    Nov 20, 2003
  2. Tim Houle

    Daylight Saving Support with EWF

    Tim Houle, Apr 7, 2004, in forum: Windows XP Embedded
    Replies:
    3
    Views:
    501
    Slobodan Brcin \(eMVP\)
    Apr 7, 2004
  3. Guest
    Replies:
    3
    Views:
    587
    Guest
    Apr 13, 2004
  4. Gianluca Facca

    ewf and daylight saving time

    Gianluca Facca, Nov 15, 2004, in forum: Windows XP Embedded
    Replies:
    2
    Views:
    355
    Gianluca Facca
    Nov 15, 2004
  5. Mike Warren

    RAM REG EWF and Daylight Saving

    Mike Warren, May 3, 2005, in forum: Windows XP Embedded
    Replies:
    2
    Views:
    271
    Mike Warren
    May 3, 2005
Loading...

Share This Page