I was running opensuse-13.2 and updated packages on 28 Mar 2015.
I was running linux kernel 3.19.0-4.ga260777-desktop and upgraded
to 4.0.0-rc5-4.g2458897-desktop.

When I boot my laptop undocked, the system boots normal.  I then suspend the 
system, and resume it in the dock.  The system no longer detects the switch 
from the laptop display to the dock's display.  If I open the laptop lid
and select 'configure desktop' --> 'display and monitor', the display then
automatically switches to dock display.   Before the update, docking the laptop
and resuming, automattically switched the display.

Later on I suspend and un-dock.  On the next resume, the display correctly
switches to laptop display, and functions normally.  I then suspend and resume
again.  The display is normal, but the mouse is missing.
In the kernel log, there are lots of messages from the nouveau driver
starting with
nouveau E[   PDISP][0000:01:00.0] INVALID_STATE [UNK05] chid 0 mthd 0x0080 data
0x00000000
and what looks like a dump of nouveau registers.
[ see attachment kernel log ]

libdrm_nouveau2-2.4.58-1.1.x86_64
xf86-video-nouveau-1.0.11-1.3.x86_64
xorg-x11-server-7.6_1.16.1-13.1.x86_64
linux 4.0.0-rc5-4.g2458897-desktop
23: PCI 100.0: 0300 VGA compatible controller (VGA)             
  [Created at pci.328]
  Unique ID: VCu0.XD9ILEfy6Z0
  Parent ID: vSkL.nQTovQQWMo3
  SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
  SysFS BusID: 0000:01:00.0
  Hardware Class: graphics card
  Model: "nVidia VGA compatible controller"
  Vendor: pci 0x10de "nVidia Corporation"
  Device: pci 0x0dfc 
  SubVendor: pci 0x1028 "Dell"
  SubDevice: pci 0x0535 
  Revision: 0xa1
  Driver: "nouveau"
  Driver Modules: "drm"
  Memory Range: 0xf5000000-0xf5ffffff (rw,non-prefetchable)
  Memory Range: 0xe0000000-0xefffffff (ro,non-prefetchable)
  Memory Range: 0xf0000000-0xf1ffffff (ro,non-prefetchable)
  I/O Ports: 0xe000-0xefff (rw)
  Memory Range: 0xf6000000-0xf607ffff (ro,non-prefetchable,disabled)
  IRQ: 27 (7948524 events)
  I/O Ports: 0x3c0-0x3df (rw)
  Module Alias: "pci:v000010DEd00000DFCsv00001028sd00000535bc03sc00i00"
  Driver Info #0:
    Driver Status: nouveau is active
    Driver Activation Cmd: "modprobe nouveau"
  Config Status: cfg=no, avail=yes, need=no, active=unknown
  Attached to: #8 (PCI bridge)