Hello,
Thank you for contacting us here on the forum.
May you please elaborate on your issue and tell me what application are you using in order to set up the Gamma ramp?
Please also follow the third link in my signature to gather the log files for me.
I would recommend sending your issue description + log files to this email address:
technical_enquiries@displaylink.com for a better communication process.
Of course if you would like to stay here on the forum, please post your log files.
Thank you for your actions,
Best regards,
Jakub