Confirmed that the problem impacts LCD brightness as well as volume control on a T42, even though LCD brightness use function keys (Fn+Home, Fn+End) rather than hardware buttons. Same issue with the mute button too.
Confirmed that the problem impacts LCD brightness as well as volume control on a T42, even though LCD brightness use function keys (Fn+Home, Fn+End) rather than hardware buttons. Same issue with the mute button too.