Bug 585619

Summary: Xorg seg faults on start-up when no monitor is attached
Product: [Fedora] Fedora Reporter: Larry O'Leary <larryoleary>
Component: xorg-x11-serverAssignee: X/OpenGL Maintenance List <xgl-maint>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 12CC: xgl-maint
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2010-12-03 15:28:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Xorg log produced when no monitor is attached
Xorg log produced when a monitor is attached none

Description Larry O'Leary 2010-04-25 05:07:03 UTC
Created attachment 408920 [details]
Xorg log produced when no monitor is attached

Description of problem:
Xorg server fails to start at system boot when no monitor is connected to system.  The last few lines of the Xorg.0.log file contain a backtrace and indicate a segmentation fault.

(II) Unloading /usr/lib/xorg/modules/drivers/fbdev_drv.so
(II) UnloadModule: "fbdevhw"
(II) Unloading /usr/lib/xorg/modules/linux/libfbdevhw.so

0: /usr/bin/Xorg (xorg_backtrace+0x3c) [0x80e5dbc]
1: /usr/bin/Xorg (0x8048000+0x5ef66) [0x80a6f66]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x54e40c]
3: /usr/bin/Xorg (xf86InitViewport+0x66) [0x816e8c6]
4: /usr/bin/Xorg (InitOutput+0xca0) [0x80b7440]
5: /usr/bin/Xorg (0x8048000+0x1a8b5) [0x80628b5]
6: /lib/libc.so.6 (__libc_start_main+0xe6) [0x6debb6]
7: /usr/bin/Xorg (0x8048000+0x1a661) [0x8062661]
Segmentation fault at address 0x18

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting

If I reboot with a monitor connected to the system, everything appears fine.  

Version-Release number of selected component (if applicable):
xorg-x11-server-Xorg 1.7.6-3.fc12

How reproducible:

Steps to Reproduce:
1. Disconnect monitor from computer
2. Reboot
Actual results:
Xorg is not running

Expected results:
Xorg should be running

Additional info:
Xorg also fails to start if I attempt to execute it from the command-line without a monitor attached.

Video card is: 01:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 440 AGP 8x] (rev c1)

Comment 1 Larry O'Leary 2010-04-25 05:08:32 UTC
Created attachment 408921 [details]
Xorg log produced when a monitor is attached

I have attached the log file that gets generated when a monitor is attached.  So basically, the only difference here is that with a monitor, Xorg starts as expected.

Comment 2 Bug Zapper 2010-11-03 16:21:44 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 12.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '12'.

Package Maintainer: If you wish for this bug to remain open because you
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Comment 3 Bug Zapper 2010-12-03 15:28:13 UTC
Fedora 12 changed to end-of-life (EOL) status on 2010-12-02. Fedora 12 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.