The BIOS of this machine is quite old, it may be a pre-production version:
dmi.bios.version: HCET01K1(0.01)
It was reported that a later bios can fixed it, but I can't find one,
there is even no bios update posted on Lenovo website for this machine.
** Changed in: linux (Ubuntu)
Assignee: Canonical Hardware Enablement Team (canonical-hwe-team) =>
(unassigned)
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https://bugs.launchpad.net/bugs/1145508
Title:
[Lenovo E49]: Wireless Key does not function
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