419793 - lightning event creator changes start and end times

Status: VERIFIED DUPLICATE of bug 410931

(Calendar :: Internal Components, defect)

Description

[daniel banyasz]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12
Build Identifier: thunderbird version 2.0.0.9 (20071031)

When I attempt to create a new event during certain weeks, in lightning, I am unable to choose the start and end times as I want them.
I can try to choose, but lighting enters a time 2 hours before what I click on. Every click with the mouse on the drop down box containing the time selection, moves the time two hours earlier. The start and end times are both moved, both two hours. If I persist, it keeps "counting back in time" to the previous day etc etc etc, The same happens when I click on the date boxes. That is to say, the time (not the day) moves back 2 hours.
This affects every days of certain sunday-saturday period periods. Other sunday-saturday periods work fine


Reproducible: Always

Steps to Reproduce:
1. go to an "affected" week
2. create new event
3. impossible to choose a time I want

Comment 1

[daniel banyasz]

The only way I can enter the event correctly in these weeks is as follows.
If I want an event to start 02/04/2008 18:00 and end at 03/04/2008 08:00 then i choose the days. Then using "TAB" and the numerical keypad I navigate to end time and enter 12:00. As soon as I leave this field using "TAB" or "SHIFT + TAB" the time changes to 10:00. I then navigate to start time and enter 20:00. As soon as I leave this field both fields move back 2 hours. So start time is as I want it 18:00, and end time has moved back to 08:00, which is also what I want.

Comment 2

[:Hb]

Which lightning build do you use?
Which timezone do you use?
Please name the "affected weeks". Are they on a standard / daylight
saving time boundary? 

Comment 3

[daniel banyasz]

sorry
lightning 0.7  (that was important)
timezone = Australia/Melbourne  (although lightning was installed in another timezone and both lightning and windows have been changed since. I did not use lightning then, so I don't know if the problem started after the timezone change)

affected weeks Sunday 30th March - Saturday 5th April
I have just checked, and this IS the last week of daylight saving in Victoria, Australia. We wind the clock back at 03:00 Sunday 06/04/2008

I must admit that I thought there were other weeks where this problem existed, but I have just gone through february, march and april and this is the only week. It also affects all days between 0510/2008 and 25/10/2008 inclusive. We move back to summer time on 05/10/2008. I have not tested every week between april 2 and october.

Comment 4

[Bas van den Bosch]

This is known and fixed for 0.8 and due to different problems. Please enable the timezone in the event-dialog and see whch timezone is entered here. Check to make sure the timezone for this event corresponds with the windows timezone. 
setting duplicate of bug 328442

Comment 5

[daniel banyasz]

I am aware of the timezone problem. I have had timezone enabled in the event dialogue all the time, and it is the same as my windows timezone.
The problem persists despite this.

Comment 6

[Martin Schröder [:mschroeder]]

Reopening. We have to investigate this further.

Comment 7

[Simon Paquet [:sipaq]]

Daniel Banyasz, please try a current 0.8pre nightly build and see if you can reproduce the issue there. Please report back with your findings.

Comment 8

[daniel banyasz]

I am sorry but I am not a tester normally, & I do not have the tools to build nightlies. I can try and have a look at the mozilla website and see if I can install whatever developer tools/compilers are required to create an xpi file that I can install. Alternatively, if someone can send me/ftp/rapidshare etc a win32 o.8pre nightly build, then I can install that and start testing

sorry again

Comment 9

[Andreas Treumann]

@daniel: Open this page http://www.mozilla.org/projects/calendar/lightning/download.html in your browser and scroll down to 'Lightning nightly builds (development builds)'.

The direct link of the in32 o.8pre nightly build is http://ftp.mozilla.org/pub/mozilla.org/calendar/lightning/nightly/latest-mozilla1.8/windows-xpi/

Comment 10

[daniel banyasz]

I do not really dare install a nightly into my production thunderbird with all my email in it.
How far is it from being a sable 0.8 release?
I would like to help solve this, but I can't afford to lose the thunderbird environment I wwill be testing in.
I have installed that lightning 0.8pre into a vanilla thunderbird in a virtual machine and the problem is resolved.
If I export the calendars I have in 0.7 lightning to ICS files and then remove my existing lightning and install this new one, can I simply uninstall at the end reinstall 0.7 and import my calendars again.

Comment 11

[:Hb]

(In reply to comment #10)
> I do not really dare install a nightly into my production thunderbird with all
> my email in it.
> How far is it from being a sable 0.8 release?

Please see http://wiki.mozilla.org/Calendar:Roadmap. The 0.7 versions had ten days delay.

> I would like to help solve this, but I can't afford to lose the thunderbird
> environment I wwill be testing in.
> I have installed that lightning 0.8pre into a vanilla thunderbird in a virtual
> machine and the problem is resolved.

The new start dates of DT/DST in most parts of Australia are reflected in the patch for bug 410931. Marking this bug as duplicate.

> If I export the calendars I have in 0.7 lightning to ICS files and then remove
> my existing lightning and install this new one, can I simply uninstall at the
> end reinstall 0.7 and import my calendars again.

Possible in general, but not completely riskless, see bug 419007. I'm using the nightlies since a week and will not go back.