I've been trying to track down the cause of a glitch that affects guest VNC consoles when the resolution is set to 1366x768. This results in a "stair case" effect where each successive row is offset to the right by a handful of pixels. I believe this is related to the fact that the horizontal resolution only divisible by 2, not 16 which most others are.
There was a similar report many years ago, with a proposed patch https://lists.gnu.org/archive/html/qemu-devel/2013-03/msg02732.html but this was never committed and the code has been significantly reworked in the meantime. Could anyone give me any pointers as to where the problem may lie? Thanks Simon