I'm creating this post to see if there is any insight, fixes, suggestions about this issue.
We are rolling out Lenovo T460 laptops to a number of users. With those are commonly received a Lenovo ultra slim combo keyboard and mouse which is a *wireless* set. This does not happen with HP, Lenovo or Microsoft USB wired keyboard. Also, did not happen with a Microsoft or a Logitech wireless keyboard.
Edit to update based on another report. What is block quoted below may not be entirely accurate. The report is that the first character typed is not shown on the screen but it is in the field. That lack of synch between the display and the data causes the user to type the character again. This would cause an offset, but not because of a backspace.
The issue is that once the user hits the backspace key in bootguard, all of the following keys are repeats of the keypress directly ahead of it.
So in bootguard you type in "JIN <backspace> MMY" you would expect to get "JIMMY" and you would actually get "JMM".
This really throws people off when they're trying to authenticate.
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What you type
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What you get
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Current total output
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J
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J
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"J"
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I
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I
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"JI"
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N
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N
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"JIN"
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<backspace>
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<backspace>
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"JI"
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(<backspace> erases “N” and keypress begins to repeat)
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M
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<backspace>
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“J”
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(<backspace from previous keystroke erases “I”)
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M
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M
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"JM"
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(“M” from previous keystroke)
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Y
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M
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"JMM"
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(“M” from previous keystroke)
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