As curiosity I saw Gi1 with "manual" method and Gi2 with "NVRAM" method
Try to interfaces back to defaults with the "default interface" command and try again the Etherchannel
As you can see, there are not any configurations on the interfaces. But, as you suggested, I did that with the same result.
Any other ideas?
I have resolve this issue. The link of the solution is:
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