I found this post after trying for hours to sort out this exact same issue (works connecting to Android from Windows PC but not from Ubuntu PC). Please fix this Teamviewer! And if it's an issue that has been known since v13 and won't be fixed then why not make the UI state something useful like "It is not possible to connect to Android on an Ubuntu installation of Teamviewer". At least then I would not have wasted hours trying to fix the problem!
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