G1 freezes when freediving

This just happened to me today.

On a freedive to 18m, still worked at the bottom, at the surface the screen was blank. Battery was low but still had ~2 hours shown. About half an hour later, it turned itself back on, without me doing anything (I did not try to turn it back on myself). It still recorded the dive session, except the last dive, although it did show an exit point on a different continent :). Seems likely a new software version bug, Timo_nf can you comment if you recently updated (or better, what software version are you on?).

Software version: 16.10 (c75b5ca)

GPS: 6.30

CIQ: 3.4.4

BMX:11.0.3

BLE/ANT:1.04

Sensor Hub: 23.09

lifesayko

Softwareversion 16.10

(c75b5ca)

GPS: 6.30

CIQ: 3.4.4

BMX: 11.0.3

BLE/ANT: 1.04

Sensor Hub: 23.09

looks exactly the same like yours…

I'm experiencing the same issue from time to time,
it happens only in cold water, when going down from temperature 22c down to 6-12c on the bottom.

Watch is turning off during ascent, after booting it up again it works fine for the rest of the session.

This is happening since very long time maybe even more than 1 year.

I'm always updating software as soon as it's available for me but still getting this issue from time to time.

My friends using the same model, in the same conditions, experience the same issues.

I heard a rummors that also submerging it (ambient temperature 30c) into ice bucket (8c) will cause reboot but can't confirm that.

I found this on device it may be related or helpful, I don't know what this logs contain but for me "Failed to get pressure reading!" and "Flight detected" seems to be suspicious.

verNum: 8/13/2014 (00)
ownerID: 0000000F
OwnerName: DIV
status: 03
pri_thresh: 2
archived: 08
max_arch: 08
num_recs: 20
rec_size: 20
next_evnt: 11
timeDay: 2024/ 9/11 5:48:51 
cycle_cnt: 265

11: D1 10 00 00 98:00:52.631 DIV main Started 56
12: D1 11 00 00 98:01:18.520 DIV main Ended
13: D1 10 00 00 98:10:21.867 DIV main Started 56
14: D1 11 00 00 98:11:19.756 DIV main Ended
15: D1 10 00 00 98:13:43.900 DIV main Started 56
16: D1 11 00 00 98:14:13.788 DIV main Ended
17: D1 10 00 00 191:56:56.634 DIV main Started 56

18? FF 00 00 00 0:00:05.521 HWM main 2024/ 9/11 4:57:52 C:265
19* 11 00 00 00 0:00:15.611 ftm main Failed to get pressure reading!
1A* 11 00 00 00 0:00:15.618 HWM main Failed to get pressure reading!
1B: D1 11 00 00 0:00:16.633 DIV main Ended
1C: D1 10 00 00 0:03:20.607 DIV main Started 56
1D: D1 11 00 00 0:03:40.496 DIV main Ended
1E: D1 10 00 00 0:06:56.641 DIV main Started 56
1F: D1 11 00 00 0:07:54.529 DIV main Ended
00: D4 00 00 00 0:09:04.259 HWM main Flight detected
01: D1 10 00 00 0:13:08.672 DIV main Started 56
02: D1 11 00 00 0:13:20.561 DIV main Ended
03: D1 10 00 00 0:17:49.708 DIV main Started 56
04: D1 11 00 00 0:18:44.596 DIV main Ended
05: D1 10 00 00 0:24:49.738 DIV main Started 56
06: D1 11 00 00 0:25:11.628 DIV main Ended
07: D1 10 00 00 0:29:46.771 DIV main Started 56
08: D1 11 00 00 0:30:44.676 DIV main Ended
09: D1 10 00 00 0:35:45.820 DIV main Started 56
0A: D1 11 00 00 0:36:23.707 DIV main Ended
0B: D1 10 00 00 0:41:45.851 DIV main Started 56
0C: D1 11 00 00 0:42:43.740 DIV main Ended
0D: D1 10 00 00 0:47:18.903 DIV main Started 56
0E: D1 11 00 00 0:47:43.772 DIV main Ended
0F: D1 10 00 00 0:50:53.935 DIV main Started 56
10: D1 11 00 00 0:51:03.803 DIV main Ended

Interesting. Cold water makes sense, I'm diving in a pond in Massachusetts, can't say it's warm. I've dove in that pond many times now (in colder weather) but first time it happened for me.

Out of curiosity, how do you get the logs off the watch?

You need to install garmin express and then when you connect watch with cable it will apear as external drive.

I found logs in folder EVNTLOGS.

I think earlier there was something like crashlog, but I can't find it anywhere.

Similar log from mine:


verNum:     8/13/2014 (00)
ownerID:    0000000F
OwnerName:  DIV
status:     01
pri_thresh:  2
archived:   05
max_arch:   08
num_recs:   20
rec_size:   20
next_evnt:  00
timeDay:    2024/ 9/ 2 12:46:40
cycle_cnt:  66

00: D1 11 00 00  158:54:45.465 DIV main  Ended
01: D1 10 00 00  158:57:29.520 DIV main  Started 56
02: D1 11 00 00  158:57:54.521 DIV main  Ended
03: D1 10 00 00  158:59:43.560 DIV main  Started 56
04: D1 11 00 00  159:00:15.560 DIV main  Ended
05: D1 10 00 00  159:02:55.598 DIV main  Started 56
06: D1 11 00 00  159:03:25.599 DIV main  Ended

07? FF 00 00 00    0:00:04.760 HWM main 2024/ 7/22 10:53:19 C:60
08* 11 00 00 00    0:00:13.670 HWM main  Failed to get pressure reading!
09* 11 00 00 00    0:00:13.913 HWM main  Failed to get pressure reading!

0A? FF 00 00 00    0:00:04.818 HWM main 2024/ 7/25 16:18:59 C:61
0B* 11 00 00 00    0:00:13.696 HWM main  Failed to get pressure reading!

0C? FF 00 00 00    0:00:05.586 HWM main 2024/ 8/ 3 11:01:20 C:62

0D? FF 00 00 00    0:00:05.090 HWM main 2024/ 8/ 3 11:01:54 C:63

0E? FF 00 00 00    0:00:05.445 HWM main 2024/ 8/11 11:34:08 C:64

0F? FF 00 00 00    0:00:04.940 HWM main 2024/ 8/19 10:52:56 C:65

10? FF 00 00 00    0:00:05.194 HWM main 2024/ 8/24 13:54:22 C:66
11: D4 00 00 00   35:11:03.279 HWM main  Flight detected
12: D1 10 00 00  146:18:09.326 DIV main  Started 53
13: D1 11 00 00  146:18:32.126 DIV main  Ended
14: D4 00 00 00  147:09:47.492 HWM main  Flight detected
15: D1 10 00 00  214:20:32.102 DIV main  Started 56
16: D1 11 00 00  214:20:50.647 DIV main  Ended
17: D1 10 00 00  214:25:44.790 DIV main  Started 56
18: D1 11 00 00  214:26:19.679 DIV main  Ended
19: D1 10 00 00  214:29:36.825 DIV main  Started 56
1A: D1 11 00 00  214:29:46.710 DIV main  Ended
1B: D1 10 00 00  214:37:21.857 DIV main  Started 56
1C: D1 11 00 00  214:37:52.741 DIV main  Ended
1D: D1 10 00 00  214:44:13.896 DIV main  Started 56
1E: D1 11 00 00  214:44:30.784 DIV main  Ended
1F: D1 10 00 00  214:52:16.932 DIV main  Started 56

lifesayko said:

Similar log from mine:

Crash logs in the folder //GARMIN/Debug might be more interesting. However, I would rather reach out to the Product Support through their website at https://support.garmin.com and send it to them, than posting it here on the user forum.

I have /GARMIN/Debug but no files inside, only empty folders Uploads/ULF.

Should I prevent watch sync to keep files there after crash ?