How is data from a Bluetooth keyboard handled by Linux? (how does it become a keystroke?)
0
I have a Bluetooth keyboard that is not functioning properly and I'm trying to debug why.
What I've done so far:
- Connected the device using
bluetoothctl
- In
/var/lib/bluetooth/{adapter_MAC}/{keyboard_MAC}I've noticed thatClass=0x000540. I've looked this up in https://www.question-defense.com/tools/class-of-device-bluetooth-cod-list-in-binary-and-hex and found that it is indeed aKeyboardclass. - I've run
btmon, and I can see the data coming in from the keyboard (see a sample below)
In btmon, when I type abc I can see the following 6 messages:
a1 01 00 00 04 00 00 00 00 00 # a
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 05 00 00 00 00 00 # b
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 06 00 00 00 00 00 # c
a1 01 00 00 00 00 00 00 00 00 # keyup
My question is: How is this data handled by Linux and converted into keystrokes? What is the next step? Where are the drivers that handle this?
If it's necessary information, this is a Fedora-based distro.
linux drivers bluetooth
asked 7 mins ago
connorbodeconnorbode
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment |
0
I have a Bluetooth keyboard that is not functioning properly and I'm trying to debug why.
What I've done so far:
- Connected the device using
bluetoothctl
- In
/var/lib/bluetooth/{adapter_MAC}/{keyboard_MAC}I've noticed thatClass=0x000540. I've looked this up in https://www.question-defense.com/tools/class-of-device-bluetooth-cod-list-in-binary-and-hex and found that it is indeed aKeyboardclass. - I've run
btmon, and I can see the data coming in from the keyboard (see a sample below)
In btmon, when I type abc I can see the following 6 messages:
a1 01 00 00 04 00 00 00 00 00 # a
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 05 00 00 00 00 00 # b
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 06 00 00 00 00 00 # c
a1 01 00 00 00 00 00 00 00 00 # keyup
My question is: How is this data handled by Linux and converted into keystrokes? What is the next step? Where are the drivers that handle this?
If it's necessary information, this is a Fedora-based distro.
linux drivers bluetooth
asked 7 mins ago
connorbodeconnorbode
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
"not functioning properly" isn't very specific. Is it sometimes working? Some keys work? Wrong characters produced?
– Stephen Harris
4 mins ago
@StephenHarris occasionally, if I don't touch the keyboard for a while, then enter some keys, the first character I entered might be entered many many times on the screen (e.g. if I typedhasdlkfjasdlkfjweit will sometimes enterhhhhhhhhhhhhhhhhhhhhhhhhh.. continuously until I hit a key on my wired keyboard). I haven't determined exactly when this behavior occurs but it seems to be related to leaving the keyboard idle. other than that, no output for any keys
– connorbode
1 min ago
Please edit the question to include this information; thanks.
– Stephen Harris
20 secs ago
add a comment |
0
0
0
I have a Bluetooth keyboard that is not functioning properly and I'm trying to debug why.
What I've done so far:
- Connected the device using
bluetoothctl
- In
/var/lib/bluetooth/{adapter_MAC}/{keyboard_MAC}I've noticed thatClass=0x000540. I've looked this up in https://www.question-defense.com/tools/class-of-device-bluetooth-cod-list-in-binary-and-hex and found that it is indeed aKeyboardclass. - I've run
btmon, and I can see the data coming in from the keyboard (see a sample below)
In btmon, when I type abc I can see the following 6 messages:
a1 01 00 00 04 00 00 00 00 00 # a
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 05 00 00 00 00 00 # b
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 06 00 00 00 00 00 # c
a1 01 00 00 00 00 00 00 00 00 # keyup
My question is: How is this data handled by Linux and converted into keystrokes? What is the next step? Where are the drivers that handle this?
If it's necessary information, this is a Fedora-based distro.
linux drivers bluetooth
asked 7 mins ago
connorbodeconnorbode
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a Bluetooth keyboard that is not functioning properly and I'm trying to debug why.
What I've done so far:
- Connected the device using
bluetoothctl
- In
/var/lib/bluetooth/{adapter_MAC}/{keyboard_MAC}I've noticed thatClass=0x000540. I've looked this up in https://www.question-defense.com/tools/class-of-device-bluetooth-cod-list-in-binary-and-hex and found that it is indeed aKeyboardclass. - I've run
btmon, and I can see the data coming in from the keyboard (see a sample below)
In btmon, when I type abc I can see the following 6 messages:
a1 01 00 00 04 00 00 00 00 00 # a
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 05 00 00 00 00 00 # b
a1 01 00 00 00 00 00 00 00 00 # keyup
a1 01 00 00 06 00 00 00 00 00 # c
a1 01 00 00 00 00 00 00 00 00 # keyup
My question is: How is this data handled by Linux and converted into keystrokes? What is the next step? Where are the drivers that handle this?
If it's necessary information, this is a Fedora-based distro.
linux drivers bluetooth
linux drivers bluetooth
asked 7 mins ago
connorbodeconnorbode
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 mins ago
connorbodeconnorbode
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 mins ago
connorbodeconnorbode
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 mins ago
connorbodeconnorbode
1011
asked 7 mins ago
connorbodeconnorbode
1011
1011
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
connorbode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
"not functioning properly" isn't very specific. Is it sometimes working? Some keys work? Wrong characters produced?
– Stephen Harris
4 mins ago
@StephenHarris occasionally, if I don't touch the keyboard for a while, then enter some keys, the first character I entered might be entered many many times on the screen (e.g. if I typedhasdlkfjasdlkfjweit will sometimes enterhhhhhhhhhhhhhhhhhhhhhhhhh.. continuously until I hit a key on my wired keyboard). I haven't determined exactly when this behavior occurs but it seems to be related to leaving the keyboard idle. other than that, no output for any keys
– connorbode
1 min ago
Please edit the question to include this information; thanks.
– Stephen Harris
20 secs ago
add a comment |
1
"not functioning properly" isn't very specific. Is it sometimes working? Some keys work? Wrong characters produced?
– Stephen Harris
4 mins ago
@StephenHarris occasionally, if I don't touch the keyboard for a while, then enter some keys, the first character I entered might be entered many many times on the screen (e.g. if I typedhasdlkfjasdlkfjweit will sometimes enterhhhhhhhhhhhhhhhhhhhhhhhhh.. continuously until I hit a key on my wired keyboard). I haven't determined exactly when this behavior occurs but it seems to be related to leaving the keyboard idle. other than that, no output for any keys
– connorbode
1 min ago
Please edit the question to include this information; thanks.
– Stephen Harris
20 secs ago
1
1
"not functioning properly" isn't very specific. Is it sometimes working? Some keys work? Wrong characters produced?
– Stephen Harris
4 mins ago
"not functioning properly" isn't very specific. Is it sometimes working? Some keys work? Wrong characters produced?
– Stephen Harris
4 mins ago
@StephenHarris occasionally, if I don't touch the keyboard for a while, then enter some keys, the first character I entered might be entered many many times on the screen (e.g. if I typed
hasdlkfjasdlkfjwe it will sometimes enter hhhhhhhhhhhhhhhhhhhhhhhhh.. continuously until I hit a key on my wired keyboard). I haven't determined exactly when this behavior occurs but it seems to be related to leaving the keyboard idle. other than that, no output for any keys– connorbode
1 min ago
@StephenHarris occasionally, if I don't touch the keyboard for a while, then enter some keys, the first character I entered might be entered many many times on the screen (e.g. if I typed
hasdlkfjasdlkfjwe it will sometimes enter hhhhhhhhhhhhhhhhhhhhhhhhh.. continuously until I hit a key on my wired keyboard). I haven't determined exactly when this behavior occurs but it seems to be related to leaving the keyboard idle. other than that, no output for any keys– connorbode
1 min ago
Please edit the question to include this information; thanks.
– Stephen Harris
20 secs ago
Please edit the question to include this information; thanks.
– Stephen Harris
20 secs ago
add a comment |
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1
"not functioning properly" isn't very specific. Is it sometimes working? Some keys work? Wrong characters produced?
– Stephen Harris
4 mins ago
@StephenHarris occasionally, if I don't touch the keyboard for a while, then enter some keys, the first character I entered might be entered many many times on the screen (e.g. if I typed
hasdlkfjasdlkfjweit will sometimes enterhhhhhhhhhhhhhhhhhhhhhhhhh.. continuously until I hit a key on my wired keyboard). I haven't determined exactly when this behavior occurs but it seems to be related to leaving the keyboard idle. other than that, no output for any keys– connorbode
1 min ago
Please edit the question to include this information; thanks.
– Stephen Harris
20 secs ago