Oh, this bug - bad state tracking in DP. Fixed around 3.5.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Fix Released
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Happen after yesterday update (GMT +8 ) same situation
Ubuntu 12.04 64bit
HP Desktop Z220
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https://bugs.launchpad.net/bugs/1045719
Title:
Display port monitor detected, but no signal
** Package changed: xorg (Ubuntu) = xserver-xorg-video-intel (Ubuntu)
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https://bugs.launchpad.net/bugs/1045719
Title:
Display port monitor detected, but no signal sent
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https://bugs.launchpad.net/bugs/1045719
Title:
Display port monitor detected, but no signal sent
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