Bug 23474

Summary: xrandr doesn't pick up on 1600x1200 modeline
Product: DRI Reporter: Michael de Lang <kingoipo>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED INVALID QA Contact:
Severity: normal    
Priority: medium    
Version: XOrg git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Xorg log, mainly for showing modelines.
none
Xorg configuration file with PreferredMode
none
non-KMS Xorg log none

Description Michael de Lang 2009-08-23 08:22:22 UTC 
After an update to 2.6.31-rc7, with radeon kernel modesetting enabled and a clean boot, screen does not start up in 1600x1200(highest possible), but 1152x864(used to work fine with non-KMS 2.6.30.2). xrandr also doesn't have the option so I have to manually add the modeline that xorg picks up.

Attached Xorg.0.log shows the modelines that the radeon driver picks up on.
Comment 1 Michael de Lang 2009-08-23 08:22:56 UTC 
Created attachment 28866 [details]
Xorg log, mainly for showing modelines.
Comment 2 Alex Deucher 2009-09-01 09:27:46 UTC 
The edid appears to have the 1600x1200 mode:
(II) RADEON(0): Modeline "1600x1200"x0.0  202.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (93.8 kHz)

You should be able to select it using xrandr or by setting it as your preferred mode in your xorg.cong.
Comment 3 Michael de Lang 2009-09-01 10:16:38 UTC 
But that's the problem, I can't select it in xrandr unless I add the mode first. Haven't tried the preferred mode though. Will do that.
Comment 4 Michael de Lang 2009-09-03 14:35:55 UTC 
PreferredMode didn't help either.

oipo [ ~ ]$ cat /var/log/Xorg.0.log | grep PreferredMode
(**) RADEON(0): Option "PreferredMode" "1600x1200"
(WW) RADEON(0): Option "PreferredMode" is not used
Comment 5 Alex Deucher 2009-09-03 15:07:56 UTC 
(In reply to comment #4)
> PreferredMode didn't help either.
> 
> oipo [ ~ ]$ cat /var/log/Xorg.0.log | grep PreferredMode
> (**) RADEON(0): Option "PreferredMode" "1600x1200"
> (WW) RADEON(0): Option "PreferredMode" is not used
> 

Please attach your xorg config.
Comment 6 Michael de Lang 2009-09-03 18:51:13 UTC 
Created attachment 29197 [details] [review]
Xorg configuration file with PreferredMode
Comment 7 Alex Deucher 2009-09-03 20:52:03 UTC 
you need to add the modeline to your config:

Section "Monitor"
	#DisplaySize	  320   240	# mm
	Identifier   "Monitor0"
	VendorName   "IVM"
	ModelName    "1740"
	Option	    "DPMS"
        Modeline "1600x1200"  202.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync
        Option      "PreferredMode" "1600x1200"
EndSection
Comment 8 Michael de Lang 2009-09-05 04:21:40 UTC 
Added it to my xorg.conf, works fine now. Just strange that I didn't need this before I switched to KMS.
Comment 9 Alex Deucher 2009-09-05 07:36:37 UTC 
(In reply to comment #8)
> Added it to my xorg.conf, works fine now. Just strange that I didn't need this
> before I switched to KMS.
> 

Can you attach your non-kms log? You can disable kms by loading the radeon drm modules with the modeset=0 option.
Comment 10 Michael de Lang 2009-09-12 08:38:19 UTC 
Sorry for the delay, I managed to get ill.

Here's the non-KMS log without the modeline added to the xorg.conf.
Comment 11 Michael de Lang 2009-09-12 08:38:45 UTC 
Created attachment 29457 [details]
non-KMS Xorg log
Comment 12 Marek Olšák 2014-01-23 11:15:54 UTC 
We don't support UMS anymore. Closing.

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