Dominik Schlösser

Interesting! A kernel bug seems to be the cause: a patch intended for 32bit got wrongly applied to 64bit. Did you try the fix suggested in: namely: ```bash sudo rpi-update...

@OdessaEyes : You might be encountering a different problem, since you are running 32bit Raspbian. If your error is not timeouts on ppstest with messages like: ``` time_pps_fetch() error -1...

The issue seems to be fixed with current (2023-12) bookworm release of Raspberry Pi OS. No more patches are needed. Please re-check, and let me know if there are still...

@romm32 : Non of the fixes should be necessary anymore. Which model of Raspberry Pi are you using? Please paste the `ppstest` command together with it's output into the bug-report....

I just checked: there is _still_ ongoing work on this bug here [Raspberry kernel pps issue 5430](https://github.com/raspberrypi/linux/issues/5430) . One thing (if you have one of the newer models) you can...

Thank you @Nebulosa-Cat for this information! I will update the guide.

Some additional checkpoints: Are you loading both required kernel modules (e.g. in `/etc/modules-load.d/raspberrypi.conf`): ``` pps-gpio pps-ldisc ``` Please try: ```bash sudo dmesg | grep pps ``` We can then compare...

You won't get PPS, until GPS has 3D lock with at least 3-4 satellites. That explains your timeouts. Before even trying to test PPS, you must first make sure that...

The problem seems to be already with GPS receive not working, and that needs to be fixed before even trying PPS. In Theory, there should not be any difference between...

Did you remember to enable the serial port in `raspi-config`? `sudo raspi-config` Go to 'Interface Options', 'Serial Port': You need to switch off 'login shell', and enable the Serial Port....