07-05-2022, 12:13 PM
(This post was last modified: 07-05-2022, 12:20 PM by pifou.
Edit Reason: Add more info
)
Hi Peter,
I can confirm the Logitech M557 works reliably and it doesn't disconnect when using both Mobian (uSD) and PostmarketOS (eMMC).
However, there's quite a catch here with BT: the only BT device connected is the mouse.
I used the PP keyboard case [PPKC] as a keyboard. I could never get two BT devices to work at the same time.
If I try to use a BT keyboard and a BT mouse I only get one of them working. To do so reliably I have to power one or the other off, then remove and re-add the device I want to use. After that all is fine for that single device, be it a keyboard or a mouse.
The even worse part is that the PPKC stopped working (at all in Mobian) properly (no Fn top row symbols in PostmarketOS) with both OSes after they were upgaded to versions without the kb151 kernel module.
Now I have to choose if I want either a BT mouse or a BT keyboard but not both.
It doesn't matter if I attach the PPKC or not, the bad behaviour remains as above.
There is no need for a custom driver for the keyboard or mouse.
I tried two functional (they work fine with Android) BT keyboards in the above tests.
My conclusion: I think the brand doesn't matter but to get any BT HID device working, the phone needs to know only about a single device at a time.
I can confirm the Logitech M557 works reliably and it doesn't disconnect when using both Mobian (uSD) and PostmarketOS (eMMC).
However, there's quite a catch here with BT: the only BT device connected is the mouse.
I used the PP keyboard case [PPKC] as a keyboard. I could never get two BT devices to work at the same time.
If I try to use a BT keyboard and a BT mouse I only get one of them working. To do so reliably I have to power one or the other off, then remove and re-add the device I want to use. After that all is fine for that single device, be it a keyboard or a mouse.
The even worse part is that the PPKC stopped working (at all in Mobian) properly (no Fn top row symbols in PostmarketOS) with both OSes after they were upgaded to versions without the kb151 kernel module.
Now I have to choose if I want either a BT mouse or a BT keyboard but not both.
It doesn't matter if I attach the PPKC or not, the bad behaviour remains as above.
There is no need for a custom driver for the keyboard or mouse.
I tried two functional (they work fine with Android) BT keyboards in the above tests.
My conclusion: I think the brand doesn't matter but to get any BT HID device working, the phone needs to know only about a single device at a time.
