You may encounter the error that an unknown key has been released, the translated 2 sentences code is 0x81. There are several steps you can take to fix this problem, and we’ll discuss them shortly.
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My /var/log/kern.log and dmesg output are full of noise, like this:
[17236124.064000] atkbd.c: key derivation unknown (sentence 2 translated, code from 0x81 to isa0060 / serio0).
[17236124.064000] atkbd.c: use ‘setkeycodes e001
[17236127.616000] atkbd.c: The main unknown was pressed (sentence 2 translated, program 0xd9 on isa0060 / serio0).
[17236127.616000] atkbd.c: use “setkeycodes e059
[17236140.676000] atkbd.c: An unknown key was pressed (sentence 5 translated, code 0xd9 in isa0060 / serio0).
[17236140.676000] atkbd.c: use setkeycodes e059
[17236162.472000] atkbd.c: Unknown key sent (sentence 2 translated, code 0xd9 directly to isa0060 / serio0).
[17236162.472000] atkbd.c: use “setkeycodes e059
[17236168.856000] atkbd.c: Most important unknown point clicked (sentence 2 translated, marketer 0xd9 in isa0060 / serio0).
[17236168.856000] atkbd.c: use “setkeycodes e059
[17236172.636000] atkbd.c: unknown key pressed (translated: set number, code 0xd9 to isa0060 / serio0).
[17236172.636000] atkbd.c: use “setkeycodes e059
This is annoying aboutdetecting real kernel bugs, because acceptable bugs are masked by these excessive messages.
The problem has been known for a long time (based on Linux 2.6, I believe), but still cannot be fixed!
The last time I looked at this assignment was because my Microsoft wireless keyboard was submitting power state ideas. A similar issue has been reported on the Bugzilla Fedora, and the Ubuntu forums have mentioned several sections on how the issue started.
DJ YB Cle Inconnue Liberee Ensemble Traduit 2 Code 0x81 Active
Clave Desconocida Liberada Traducida Conjunto 2 Codigo 0x81 En
Neizvestnyj Klyuch Vypushen Perevedennyj Nabor 2 Kod 0x81 Na
Chiave Sconosciuta Rilasciata Set 2 Tradotto Codice 0x81 Acceso
알 수 없는 키 릴리스 번역된 세트 2 코드 0x81 On
Chave Desconhecida Liberada Traduzida Conjunto 2 Codigo 0x81 Em
Okand Nyckel Slappt Oversatt Uppsattning 2 Kod 0x81 Pa
Unbekannter Schlussel Freigegeben Ubersetzt Satz 2 Code 0x81 An
Onbekende Sleutel Vrijgegeven Vertaalde Set 2 Code 0x81 Aan