K4 time zone

mattcd216 · 04-06-2023, 12:01 PM

Hi. I've used a K4 to make the literary clock project. Worked nicely for ages, until the UK moved from Greenwich Mean Time to British Summer Time. The kindle hasn't changed time zone, it would appear. It's an hour behind. Not the literary clock project, but the device itself. It doesn't seem to update as per network time once on wifi, either.

Any ideas?!

Thanks,
Matt

NiLuJe · 04-06-2023, 12:04 PM

If you care about the native UI, there's a slightly obtuse `settz` script you can use.

If you don't, it's a Linux system, just import a sane timezone file from any halway recent Linux system in there (IIIRC, it's in the standard place; if not, dig around in /var/local) and fix the date.

mattcd216 · 04-12-2023, 09:35 AM

Thanks for the steer.

The date command shows the kindle is in UTC zone, but I'm not getting much further. timedatectl does not work. I don't have a timezone file in the /etc directory. The file /etc/localtime links to /var/local/system/tz but I can't find that file when I cd to that directory.

There is a last_time file in /etc/local/system but I don't seem to be able to do much with it.

Code:

[root@kindle system]# ls -l last_time
---x--xr-T    1 root     root            8 Feb 16 11:28 last_time

Any pointers?

Thanks again.

NiLuJe · 04-12-2023, 01:04 PM

Quote:

Originally Posted by mattcd216

timedatectl

Nor should it, that's a systemd special, IIRC

.

Quote:

Originally Posted by mattcd216

The file /etc/localtime links to /var/local/system/tz but I can't find that file

Well, you kinda answered your own question there

. Just import the right tzdata file from a Linux system in place of that missing varlocal one.

mattcd216 · 04-17-2023, 02:04 PM

Thanks for the tip. I created the tz file and put Europe/London in it. A cat of the /etc/localtime link produces that. Still can't get the kindle to jump forward to British Summer Time, though.
Also tried recreating the symlink to /var/local/system/Europe/London but that didn't work.

Only command I can get to work is the date command, which shows UTC. timedatectl does not work. Also no /usr/share/zoneinfo directory, which a lot of guides point to.

I'm away for a few weeks now. Will get back on it when I'm back.

Thanks for the help.

mattcd216 · 06-07-2023, 03:07 PM

Finally solved this.

The /etc/localtime sym linked to a file that didn't exist. I scp'd the Europe/London file from my ubuntu laptop over to the kindle and recreated the sym link.

qadzek · 05-10-2024, 11:40 AM

Quote:

Originally Posted by mattcd216

Finally solved this.

The /etc/localtime sym linked to a file that didn't exist. I scp'd the Europe/London file from my ubuntu laptop over to the kindle and recreated the sym link.

Thanks for sharing your solution.

Moving a file like

Code:

/usr/share/zoneinfo/Europe/London

from a recent Linux system to

Code:

/var/local/system/tz

on the Kindle seemed to initially work, but didn't survive a reboot.

Symlinking the

Code:

/etc/localtime

file directly to the time zone file seems to fix this:

Code:

ln -s /London /etc/localtime

04-06-2023, 12:01 PM	#1
mattcd216 Enthusiast Posts: 29 Karma: 10 Join Date: Jan 2023 Device: kindle 4 D01100	K4 time zone Hi. I've used a K4 to make the literary clock project. Worked nicely for ages, until the UK moved from Greenwich Mean Time to British Summer Time. The kindle hasn't changed time zone, it would appear. It's an hour behind. Not the literary clock project, but the device itself. It doesn't seem to update as per network time once on wifi, either. Any ideas?! Thanks, Matt

04-12-2023, 09:35 AM	#3
mattcd216 Enthusiast Posts: 29 Karma: 10 Join Date: Jan 2023 Device: kindle 4 D01100	Thanks for the steer. The date command shows the kindle is in UTC zone, but I'm not getting much further. timedatectl does not work. I don't have a timezone file in the /etc directory. The file /etc/localtime links to /var/local/system/tz but I can't find that file when I cd to that directory. There is a last_time file in /etc/local/system but I don't seem to be able to do much with it. Code: [root@kindle system]# ls -l last_time ---x--xr-T 1 root root 8 Feb 16 11:28 last_time Any pointers? Thanks again.

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04-06-2023, 12:04 PM	#2
NiLuJe BLAM! Posts: 13,480 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	If you care about the native UI, there's a slightly obtuse `settz` script you can use. If you don't, it's a Linux system, just import a sane timezone file from any halway recent Linux system in there (IIIRC, it's in the standard place; if not, dig around in /var/local) and fix the date.

04-17-2023, 02:04 PM	#5
mattcd216 Enthusiast Posts: 29 Karma: 10 Join Date: Jan 2023 Device: kindle 4 D01100	Thanks for the tip. I created the tz file and put Europe/London in it. A cat of the /etc/localtime link produces that. Still can't get the kindle to jump forward to British Summer Time, though. Also tried recreating the symlink to /var/local/system/Europe/London but that didn't work. Only command I can get to work is the date command, which shows UTC. timedatectl does not work. Also no /usr/share/zoneinfo directory, which a lot of guides point to. I'm away for a few weeks now. Will get back on it when I'm back. Thanks for the help.

06-07-2023, 03:07 PM	#6
mattcd216 Enthusiast Posts: 29 Karma: 10 Join Date: Jan 2023 Device: kindle 4 D01100	Finally solved this. The /etc/localtime sym linked to a file that didn't exist. I scp'd the Europe/London file from my ubuntu laptop over to the kindle and recreated the sym link.

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