Bug 707933

Summary: External HDMI monitor blank after logging in
Product: [Fedora] Fedora Reporter: Stephen So <steve8988>
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: 15CC: airlied, ajax, awilliam, bskeggs, carl.minus
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-06-01 23:47:30 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
Xorg log none

Description Stephen So 2011-05-26 11:15:54 UTC 
Description of problem:  I have a Dell Studio XPS 13 with an Nvidia 9400M card. I connect an external BenQ LCD panel via an HDMI-to-DVI cable. This has worked in previous Fedora releases.  But after a fresh install of Fedora 15, the monitor gets a signal and shows plymouth, then the stripe wallpaper (login screen is shown on the laptop screen). However, after I log in, both screens (external and laptop screen) go blank and I cannot Ctrl-Alt-F2 to terminal, restart, etc.  I have to ssh into it from an external PC, kill Xorg, and then reboot (i.e. simply rebooting doesn't work, I have to manually kill Xorg first before it decides to reboot).


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

xorg-x11-drv-nouveau-0.0.16-24.20110324git8378443.fc15.x86_64



How reproducible:  Always


Steps to Reproduce:
1. Plug to external monitor using HDMI-DVI cable
2. Boot into Fedora 15
3. At login screen, log into Gnome3
  
Actual results:

Both external monitor and laptop screen go blank

Expected results:

I should at least see the stripe wallpaper on the external monitor

Additional info:

Note also that if I boot into F15 and log in to gnome3 without an external monitor plugged, its all fine, but once I connect the HDMI-DVI cable, both screens go blank.
Comment 1 Stephen So 2011-05-26 11:51:29 UTC 
It seems similar to this post:

https://bbs.archlinux.org/viewtopic.php?id=116838
Comment 2 Stephen So 2011-05-27 01:09:19 UTC 
Created attachment 501216 [details]
Xorg log
Comment 3 Adam Williamson 2011-05-30 18:22:43 UTC 
Can we also get /var/log/messages (after booting with kernel parameter drm.debug=15) and ~/.xsession-errors , both after reproducing the bug? Thanks!
Comment 4 Carl Hartman 2011-06-01 18:26:09 UTC 
This sounds very much similar to what i reported over here

https://bugzilla.redhat.com/show_bug.cgi?id=701244

not too long ago.

kind regards /Carl
Comment 5 Ben Skeggs 2011-06-01 23:47:30 UTC 

*** This bug has been marked as a duplicate of bug 701244 ***