Sitting here with a 3200x1600 panel but no 1600x900 intermediate mode, and I am too lazy to add it by hand.
341654d sna: Compute half resolution modes
src/sna/sna_display.c | 43 +++++++++++++++++++++++++++++++++++++++----
1 file changed, 39 insertions(+), 4 deletions(-)
Upstream: cgit.freedesktop.org