haunted new device
by liloumultipass from LinuxQuestions.org on (#6CZJY)
Hello,
I randomly get undesirable input event, like pressing F1 but getting both F1 and F9 pressed.
I used evtest to capture both the good and the bad behavior.
good :
```
Event: time 1689357649.073609, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689357649.073609, type 1 (EV_KEY), code 59 (KEY_F1), value 1
Event: time 1689357649.073609, -------------- SYN_REPORT ------------
Event: time 1689357649.075608, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689357649.075608, type 1 (EV_KEY), code 59 (KEY_F1), value 0
Event: time 1689357649.075608, -------------- SYN_REPORT ------------
```
bad :
```
Event: time 1689355902.452992, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70042
Event: time 1689355902.452992, type 1 (EV_KEY), code 67 (KEY_F9), value 1
Event: time 1689355902.452992, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689355902.452992, type 1 (EV_KEY), code 59 (KEY_F1), value 1
Event: time 1689355902.452992, -------------- SYN_REPORT ------------
Event: time 1689355902.453989, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70042
Event: time 1689355902.453989, type 1 (EV_KEY), code 67 (KEY_F9), value 0
Event: time 1689355902.453989, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689355902.453989, type 1 (EV_KEY), code 59 (KEY_F1), value 0
Event: time 1689355902.453989, -------------- SYN_REPORT ------------
```
This is not limited to F9, any key can get "stuck" and will tag along any other key.
Pressing the "stuck" key once will resolve the issue for now.
The input device is in pristine condition and does not show any visible mechanical issue.
Is there any tool I can try before replacing the hardware?
Can this be a driver issue?
Thank you very much.
I randomly get undesirable input event, like pressing F1 but getting both F1 and F9 pressed.
I used evtest to capture both the good and the bad behavior.
good :
```
Event: time 1689357649.073609, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689357649.073609, type 1 (EV_KEY), code 59 (KEY_F1), value 1
Event: time 1689357649.073609, -------------- SYN_REPORT ------------
Event: time 1689357649.075608, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689357649.075608, type 1 (EV_KEY), code 59 (KEY_F1), value 0
Event: time 1689357649.075608, -------------- SYN_REPORT ------------
```
bad :
```
Event: time 1689355902.452992, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70042
Event: time 1689355902.452992, type 1 (EV_KEY), code 67 (KEY_F9), value 1
Event: time 1689355902.452992, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689355902.452992, type 1 (EV_KEY), code 59 (KEY_F1), value 1
Event: time 1689355902.452992, -------------- SYN_REPORT ------------
Event: time 1689355902.453989, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70042
Event: time 1689355902.453989, type 1 (EV_KEY), code 67 (KEY_F9), value 0
Event: time 1689355902.453989, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7003a
Event: time 1689355902.453989, type 1 (EV_KEY), code 59 (KEY_F1), value 0
Event: time 1689355902.453989, -------------- SYN_REPORT ------------
```
This is not limited to F9, any key can get "stuck" and will tag along any other key.
Pressing the "stuck" key once will resolve the issue for now.
The input device is in pristine condition and does not show any visible mechanical issue.
Is there any tool I can try before replacing the hardware?
Can this be a driver issue?
Thank you very much.