‘QGC’→’Analyze view’→’Log Download’→’refresh’ : The startup tone when the power supply is connected sounds twice.
Select log and ‘download’ : The startup tone continue to sound.
Is it because there is something wrong with pixhawk?
When I downloaded it the same way before, there was no startup sound.
If it’s not a problem, is there any way to turn off the startup sound?
Does it work as expected with previous versions of QGC (e.g. v4.1.7, or v4.0.5)? If so it’s presumably a QGC issue, and should be raised as a GitHub issue on the QGroundControl repository.
The logs are stored on the Pixhawk, and as far as I’m aware the Companion software does not offer any convenient ways of accessing or retrieving them.
If opening the enclosure is ok you should be able to retrieve the logs from the Pixhawk’s SD card (note that the Pixhawk has its own SD card - separate to the Raspberry Pi’s SD card).