Bug 848790

Summary: Can't use an external monitor with lenovo w520
Product: [Fedora] Fedora Reporter: Victor <butenko.v.w>
Component: xorg-x11-drv-nouveauAssignee: Ben Skeggs <bskeggs>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 17CC: airlied, ajax, bskeggs
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-08-21 05:52:14 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Victor 2012-08-16 12:16:26 UTC
Description of problem:
X server cannot detect external monitor (VGA-2 is disconnected). Checked with NVIDIA Optimus and discrete videocards.
Fail to boot with discrete video-card and external VGA boot monitor. Error while booting: 
'[drm] Initialized drm 1.1.0 20060810'

System boots when integrated card is chosen and doesn't boot in the case of 'discrete card'. 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.install Fedora 17
3.plug external monitor
4.run xrandr
Additional info:

$ xrandr 
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
LVDS1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080      60.0*+   50.0  
   1400x1050      60.0  
   1280x1024      60.0  
   1280x960       60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)

Comment 1 Ben Skeggs 2012-08-21 05:52:14 UTC
The external monitor not working from the Intel GPU is not a bug, it's expected due to the display not being physically connected to the Intel GPU.

It *should* work in Discrete mode however, and I'm marking this bug as a duplicate of the T520 Discrete mode hang bug.  It's likely the same cause.

*** This bug has been marked as a duplicate of bug 835648 ***