Package: linux-image-4.9.0-rc8-amd64 User only has one monitor, DP-1. Kernel makes a copy of it: eDP-1, and "places it to the side", making X windows unusable.
Just as in this 2011 bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/773734 "By default eDP1 is virtually positioned on the side of ..., extending the screen estate, except that all things put there can't be seen anywhere." $ xrandr --verbose Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192 eDP-1 connected primary 1920x1080+0+0 (0x46) normal (normal left inverted right x axis y axis) 477mm x 268mm panning 1920x1080+0+0 Panning: 1920x1080+0+0 DP-1 connected 1920x1080+1920+0 (0x46) normal (normal left inverted right x axis y axis) 477mm x 268mm ... Fix: GRUB_CMDLINE_LINUX add: video=eDP-1:d and reboot $ xrandr --verbose Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 DP-1 connected 1920x1080+0+0 (0x46) normal (normal left inverted right x axis y axis) 477mm x 268mm... Hardware affected: *-pci description: Host bridge product: Skylake Host Bridge/DRAM Registers vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 07 width: 32 bits clock: 33MHz *-display description: VGA compatible controller product: HD Graphics 530 vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:128 memory:f6000000-f6ffffff memory:e0000000-efffffff ioport:f000(size=64) memory:c0000-dffff
