Donk, the next step is to fully reverse commit bisect from kernel 4.15 to 4.16.18, in order to identify the latest kernel commit that did not work followed immediately by the next kernel commit that did work. This will allow a consideration of the fix commit for backporting. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ? This article was written for folks who don't know anything about linux, so it's easy to follow.
Please note, finding adjacent kernel versions, or providing a commit without testing it and reverting it is not fully reverse commit bisecting. Also, the kernel release names are irrelevant for the purposes of bisecting. It is most helpful that after the fix commit (not kernel version) has been confirmed via testing, you then mark this report Status Confirmed. Thank you for your help. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1785481 Title: amdgpu WQHD resolution(2560 × 1440) not available To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1785481/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs