Bug 20725

Summary: [945GM] Intel driver ignores Option "Enable" "false" for VGA monitor
Product: xorg Reporter: Peter Lewis <pete>
Component: Driver/intelAssignee: Wang Zhenyu <zhenyu.z.wang>
Status: RESOLVED INVALID QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
xorg.0.log showing intel driver ignoring option to disable external output none

Description Peter Lewis 2009-03-18 04:08:11 UTC 
Created attachment 23995 [details]
xorg.0.log showing intel driver ignoring option to disable external output

In my xorg.conf, I have the following section:

Section "Monitor"
        Identifier "VGA"
        Option "Enable"  "false"
EndSection

This is picked up by X, as reflected by the following excerpt from Xorg.0.log:

(II) intel(0): Output VGA using monitor section VGA
(**) intel(0): Option "Enable" "false"

However, the display is enabled nonetheless:

(II) intel(0): Output VGA connected

<snip>

(II) intel(0): Output VGA using initial mode 1024x768

The full log is attached.

Other info requested:

% uname -m
i686

% pkg-config --modversion libdrm
2.3.1

Mesa version 7.2

XServer 1.5.3

intel driver version 2.4.3

Any more info needed, just let me know :-)
Comment 1 Wang Zhenyu 2009-03-22 08:41:36 UTC 
From xorg.conf man:

Option "Enable"  "bool"
  This optional entry specifies whether the monitor should be turned on at startup. By default,  the server will attempt to enable all connected monitors.  (RandR 1.2-supporting drivers only)

"Enable" is only used for output enabling, _not_ for output disabling (try "Disable" or "Ignore" instead). 

Also see code of xf86OutputEnabled().

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