No picture on display connected via Displayport adaptor to HD 7870

Submitted by Brian Schott

Assigned to Default DRI bug account

Link to original bug (#49322)

Description

Created attachment 60820
dmesg output

Radeon HD 7870
mesa 8.0.2
Kernel 3.4-rc5
X.Org X Server 1.12.0
xf86-video-modesetting 0.2.0

• Monitor is a DVI monitor connected to an active mini-displayport to DVI adaptor.
  
• Output to all three screens functions in Windows.
  
• dmesg output and xrandr output are able to see the display and print out the correct supported resolutions
  
• HDMI and DVI output are functioning correctly on the card.
  
• Using xrandr I'm able to get the X server to think that the display is present and functioning. (I can place windows and the cursor on the screen)
  
• The display is in power-saving mode from the moment that the framebuffer console initializes. I'm not able to get any image on it.
  
  Attachment 60820, "dmesg output":
  dmesg.txt