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bug#35746: Evolution calendar gets the timezone wrong
From: |
Ben Sturmfels |
Subject: |
bug#35746: Evolution calendar gets the timezone wrong |
Date: |
Thu, 16 May 2019 22:57:06 +1000 |
User-agent: |
mu4e 1.2.0; emacs 26.2 |
Hi Ludo,
On Thu, 16 May 2019, Ludovic Courtès wrote:
> Ben Sturmfels <address@hidden> skribis:
>
>> In Evolution though, all my calendar events show up in UTC time, so I
>> have appointments showing up at eg. 1am.
>>
>> When I go to Edit, Preferences, Calendar and Task, General, under
>> timezone it says:
>>
>> [x] Use system time (UTC)
>
> Could you figure out how Evolution determines what the current time zone
> is?
>
> Guix provides /etc/localtime, which is what libc functions use, but I’m
> guessing Evolution uses a custom framework, possibly involving a
> hard-to-believe network of D-Bus services.
One clue is that when I run `evolution` in a terminal it logs the
following error:
(evolution:4359): libecal-CRITICAL **: 17:22:46.073:
e_cal_util_get_system_timezone: assertion 'location != NULL' failed
So my C troubleshooting skills are very rusty, but this is a learning
opportunity!
`strace evolution 2>&1 | grep /etc/localtime` indicates /etc/localtime
is being opened at least.
I've downloaded the source with `guix build --source
evolution-data-server`, extracted and found the the function
"e_cal_util_get_system_timezone()" at src/calendar/libecal/e-cal-util.c:1507
which calls down to "system_timezone_find()" in e-cal-system-timezone.c:522
where it looks up the timezone and compares it to a list of valid zones.
So I run `gdb evolution`, but don't seem to have the debugging symbols.
How does one get/build the debugging symbols? Can `guix build` help with
this?
Possibly completely unrelated, but noting that both icecat and chromium
do this - which is wrong:
> new Date().getTimezoneOffset()
0
Where node does this - which is correct:
> new Date().getTimezoneOffset()
-600
Cheers,
Ben
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- bug#35746: Evolution calendar gets the timezone wrong, Ben Sturmfels, 2019/05/15
- bug#35746: Evolution calendar gets the timezone wrong, Ludovic Courtès, 2019/05/16
- bug#35746: Evolution calendar gets the timezone wrong,
Ben Sturmfels <=
- bug#35746: Evolution calendar gets the timezone wrong, Ben Sturmfels, 2019/05/16
- bug#35746: Evolution calendar gets the timezone wrong, Ben Sturmfels, 2019/05/16
- bug#35746: Evolution calendar gets the timezone wrong, Danny Milosavljevic, 2019/05/16
- bug#35746: IceCat/Chromium timezone is wrong, Ludovic Courtès, 2019/05/17
- bug#35746: Evolution calendar gets the timezone wrong, Ludovic Courtès, 2019/05/18
- bug#35746: Evolution calendar gets the timezone wrong, Timothy Sample, 2019/05/18