Bug 593225

Summary: radeon.dynpm disables KMS
Product: [Fedora] Fedora Reporter: Didier G <didierg-divers>
Component: xorg-x11-drv-atiAssignee: X/OpenGL Maintenance List <xgl-maint>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 13CC: jglisse, xgl-maint
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2010-05-18 19:19:38 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Attachments:
Description Flags
Xorg.0.log with radeon.dynpm=1
none
/var/log/messages none

Description Didier G 2010-05-18 08:59:27 UTC 
Description of problem:

radeon.dynpm parameter in kernel command line causes disable of KMS regardless value passed


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

kernel-2.6.33.4-96.fc13.x86_64
xorg-x11-drv-ati-6.13.0-1.fc13.x86_64

01:00.0 VGA compatible controller: ATI Technologies Inc Juniper [Radeon HD 5700 Series]


Steps to Reproduce:
1. Just specify radeon.dynpm=0 or radeon.dynpm=1 in kernel command line
  
Actual results:

In /var/log/Xorg.0.Log and regardless value passed :

[     9.527] (II) [KMS] drm report modesetting isn't supported.
[     9.806] (II) RADEON(0): Dynamic Power Management Disabled


With *** NO *** radeon.dynpm in kernel command line :

[     9.835] (II) [KMS] Kernel modesetting enabled.



Expected results:

Dynamic Power Management if supported by hardware or warning message if not supported but KMS should stay enabled.
Comment 1 Didier G 2010-05-18 09:07:52 UTC 
Created attachment 414779 [details]
Xorg.0.log with radeon.dynpm=1
Comment 2 Jérôme Glisse 2010-05-18 15:24:53 UTC 
My guess is that dynpm is unknown parameter and thus kernel refuse to load module (please provide dmesg with the parameter to verify this supposition). If that the case than there is nothing we can do, don't use this parameter.
Comment 3 Didier G 2010-05-18 18:22:45 UTC 
In my configuration, according messages log :

May 18 11:00:43 lx-xxxxx kernel: radeon: Unknown parameter `dynpm' 

but according my understanding this option should enable power management (just google radeon.dynpm).
Comment 4 Didier G 2010-05-18 18:24:01 UTC 
Created attachment 414933 [details]
/var/log/messages
Comment 5 Jérôme Glisse 2010-05-18 19:19:38 UTC 
This option doesn't apply to 2.6.33 (it might to 2.6.34) I am closing this as this isn't a bug. Just don't use parameter that are not valid.