The debugging information Chris Wilson is after can be gathered by
adding ‘drm.debug=0xe’ to your kernel command line - you can do that the
same way that you added “video=VGA-1:d”. Once you've booted, and the
screen has flickered a bit, please grab dmesg and attach it here.
You should also be able to add “drm_kms_helper.poll=0” to your kernel
command line in /etc/default/grub if you want that work around to be
permanently enabled.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed => Incomplete
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which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/681054
Title:
[i915gm] screen repeatedly goes black for a fraction of a second (two
monitors detected?)
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https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/681054/+subscriptions
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