Bug 33438

Summary: Blank display and locked monitor with KMS and HDMI monitr
Product: xorg Reporter: Micael Dias <kam1kaz3>
Component: Driver/RadeonAssignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: major    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Xorg and dmesg logs using HDMI and DVI none

Description Micael Dias 2011-01-24 15:14:18 UTC
Created attachment 42415 [details]
Xorg and dmesg logs using HDMI and DVI

My graphics card is a Sapphire Radeon 3870 HD, with 2 DVI outputs, and I have 2 monitors; a Samsung one that has VGA, DVI and HDMI inputs, and a Philips one that has only a VGA input.

Let my Philips monitor be connected to the first port of the card using a DVI->VGA cable.

Now if I have the Samsung connected to the 2nd port using a DVI->DVI cable, everything works fine, but if I connect it using a DVI->HDMI cable, at the moment KMS initializes it displays a blank image, doesn't go into stand-by mode, doesn't display any info, and pressing it's buttons don't do anything (no menus).
Having it connected to the 1st port and/or just this one monitor shows same behavior.

The Philips monitor keeps displaying the boot processs normally and it reaches the GDM login screen just fine, so I know that xorg isn't crashing.

I collected some logs with drm.debug=15 first the Samsung connected using HDMI, and then with it connected using the DVI port. These are attached.

I have been experiencing this bug since the early stages of KMS development, so it's nothing new. With KMS disabled everything works fine.
Comment 1 Alex Deucher 2011-01-24 15:20:39 UTC

*** This bug has been marked as a duplicate of bug 27731 ***

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