This issue can be solved by system update with kernel version upgraded. With current status that kernel version 12 is not announced formally yet, but still can be updated by enabling the propsed-repository.
-- [g41][West Lake] U9.04: Maximum with other resolutions disappeared after several changing (17,19) https://bugs.launchpad.net/bugs/370048 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
