Bug 1071545

Summary: fails to start headless Xorg with radeon/nouveau driver and kernel modeset enabled
Product: [Fedora] Fedora Reporter: Fabrice Bellet <fabrice>
Component: xorg-x11-serverAssignee: X/OpenGL Maintenance List <xgl-maint>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: xgl-maint
Target Milestone: ---   
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2015-06-29 19:11:35 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
xorg config file
none
Xorg.0.log file
none
dmesg output none

Description Fabrice Bellet 2014-03-01 15:20:37 UTC
Created attachment 869386 [details]
xorg config file

Hi!

I'm trying to run a headless Xorg server. When I don't specify anything in an xorg.conf file, the vesa driver is used, and provides a headless 640x480 X server. But if I write in the xorg.conf file that I'd prefer to use the hardware dedicated driver instead of the vesa driver, Xorg fails to start, with this error in the kernel log :

[   42.837451] detected fb_set_par error, error code: -22
[   43.126197] detected fb_set_par error, error code: -22
[   43.255799] detected fb_set_par error, error code: -22

Comment 1 Fabrice Bellet 2014-03-01 15:21:46 UTC
Created attachment 869387 [details]
Xorg.0.log file

Comment 2 Fabrice Bellet 2014-03-01 15:22:46 UTC
Created attachment 869388 [details]
dmesg output

Comment 3 Fedora End Of Life 2015-05-29 11:06:44 UTC
This message is a reminder that Fedora 20 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 20. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
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of '20'.

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version prior this bug is closed as described in the policy above.

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Comment 4 Fedora End Of Life 2015-06-29 19:11:35 UTC
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 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
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Thank you for reporting this bug and we are sorry it could not be fixed.