Comment 7 for bug 1483320

Note, on 201408-15387, all four display modes (extended, mirrored...) are working well with both HDMI and DP output.

And the detailed hardware information for the VGA controller is:
00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 08) (prog-if 00 [VGA controller])
        Subsystem: Dell Device [1028:062d]
        Flags: bus master, fast devsel, latency 0, IRQ 45
        Memory at f6000000 (64-bit, non-prefetchable) [size=16M]
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at f000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915

The resolution on this laptop is 1920*1080