Regaring comment #26, I am using PX UH-1.2MX HDMI 2.0 certified Premium High Speed cable so the cable's quality should not be a problem.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: Some external 4K monitor is not working properly To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
