If, in xorg.conf, a Monitor section refers to the external VGA output, and it is not connected, then the intel driver segfaults and X does not start. Steps to reproduce: 1. Ensure that there is no monitor connected to the external VGA port 2. Include a section in xorg.conf such as: Section "Monitor" Identifier "VGA" Option "Above" "LVDS" EndSection 3. Start X Doing this, I received the backtrace as attached in xorg.0.log. This may be related to bug 20725, since both appear to be about the inability of the intel driver to disable the external output (whether requested to explicitly, or through its non presence). 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 :-)
Created attachment 23997 [details] xorg.0.log with intel driver backtrace
I can't produce this with current intel driver master and xserver 1.6. Could you try them?
For none modes output, xserver will skip output relative check for it, so this shouldn't happen. Please try with latest stable release, reopen if you can still see this.
Yep, confirming that this is fixed in latest version. Thanks!
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