Bug 785636

Summary: Since kernel 3.2: Intel integrated graphics does not enable laptop monitor if external monitor is connected
Product: [Fedora] Fedora Reporter: Johannes Goller <jogojapan>
Component: xorg-x11-drv-intelAssignee: Adam Jackson <ajax>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: ajax, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, xgl-maint
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Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2012-02-06 02:30:30 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Johannes Goller 2012-01-30 05:16:55 UTC 
Description of problem:
After receiving kernel update 3.2.1-3.fc16.x86_64 on Jan 25 the built-in Intel graphics card does not enable the laptop monitor any more when an external monitor is connected during start-up.

Note that I did not have this problem with any previous F16 kernel version, and on Jan 25 I did not update the Intel driver itself -- just the kernel.

Version-Release number of selected component (if applicable):
kernel-3.2.1-3.fc16.x86_64
xorg-x11-drv-intel-2.17.0-4.fc16.x86_64

How reproducible:
Use the above versions on an i5 M520 processor with integrated graphics.

Steps to Reproduce:
1. Boot the computer while external monitor is connected
2.
3.
  
Actual results:
X11 (KDE in my case) will come up on the external monitor while the laptop's built-in monitor remains black.

Expected results:
Both monitors should be enabled in dual-head mode (and they used to be until the kernel was updated).

Additional info:

I received an update for x11-intel today: xorg-x11-drv-intel-2.17.0-8 and a kernel update for kernel-3.2.2-1. Neither of them changed anything. The problem remains.

I still do NOT have the problem if I boot on an older kernel version 3.1.9-1.
Comment 1 Josh Boyer 2012-02-03 14:32:38 UTC 
Please don't move this back to kernel:

https://fedoraproject.org/wiki/KernelBugTriage#Video_Subsystem_bugs
Comment 2 Johannes Goller 2012-02-06 02:30:30 UTC 
The problem is solved in kernel 3.2.3.