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Re: Segfault after upgrade.

From: Kai Harrekilde-Petersen
Subject: Re: Segfault after upgrade.
Date: Fri, 22 May 2020 13:44:50 +0200
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0

Hi David,

With no logging, it is very hard to say what caused the segfault. One of the things that has been seen several times on the list is mixes of different versions of gpsd. So if your gpsd 3.17 installation left something over after the uninstall, it could affect the 3.20 install.

Since the fresh install works, and the one with the previous 3.17 install doesn't, this is definitely a possibility.

Best regards,


On 22 May 2020 12.46, David J Taylor wrote:
Having got one Raspberry Pi working with a fresh backport install of 3.20 (RasPi 4B, 4GB, 4.19.97-v71+) , I tried the same procedure on another pi (B, 512 MB, 4.19.97+ Buster), which already had 3.17 installed.  I removed the 3.17, and installed the 3.20 backport, but now I get segfaults when running "cgps -V" or "gpsd -V".  Minicom shows serial data flowing and the serial port name is correct.  Reboot didn't fix.  Reinstalling 3.17 and it all works, but of course no extended views in cgps and no ubxtool.

I don't know how to debug this.


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