BLE connection problems with firmware kernel 4.19

basnijholt / miflora

☘️🌡🌼🥀🏡 Mi Flora Plant sensor Python package

MIT License

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BLE connection problems with firmware kernel 4.19 #127

Closed Markkuuss closed 4 years ago

Markkuuss commented 5 years ago

With the latest firmware, which includes the Kernel 4.19, data transfer via Bluetooth is no longer possible after a few hours. Initially it works fine, but after a few hours no connection can be established - not only once but completely.

I have installed some older firmware versions. But it only works correctly with the last firmware commit, which still contains the Kernel 4.14: https://github.com/Hexxeh/rpi-firmware/commit/a08ece3d48c3c40bf1b501772af9933249c11c5b

If someone still has the problem with a current firmware version. With the following command you can downgrade to the last 4.14 stable: sudo BRANCH=stable rpi-update 45a2e771e7272781e62ae92322734c2b90e0268a sudo reboot

ChristianKuehnel commented 5 years ago

Hi @Markkuuss ,

thank you for letting us know. Is there anything we should do about this? Do you want to add a comment to the documentation?

Markkuuss commented 5 years ago

Hi @ChristianKuehnel I'm looking for a solution to run Miflora on a current firmware as well. Or at least hints where the error could be, e.g. if it is a firmware problem or if other software has to be adapted.

antondollmaier commented 5 years ago

I confirm this issue as well:

it is solvable with hciconfig hci0 down; sleep 5; hciconfig hci0 up - but not every time.
strace shows that hciconfig down is stuck waiting on the bluetooth socket (AF_BLUETOOTH)
incident happens after 12-24hr, sometimes already after 60min

Raspberry Pi 3, Raspbian Buster - issue already happened on Raspbian Stretch.

Issue seems not related to bluepy or miflora, but more with bluetooth in general.

ChristianKuehnel commented 4 years ago

Closing ticket as it's not so something that can be fixed in miflora.

Markkuuss commented 4 years ago

Where could this problem be addressed? Miflora doesn't work on a current Raspberry Pi anymore.