fixed in linux 3
** Package changed: ubuntu => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
** Description changed:
+ *** Fixed in linux 3 rc1 ***
+
Since this is similar to bug #597070, but covers remote displays instead
of direct installations of Ubuntu on iMacs, I thought I'd file this as a
separate bug report.
The setup is a MacBook 8,1 running Ubuntu 11.04 connected to a 27" iMac
via a crosslink Mini DisplayPort cable. The iMac mirrors output when the
GRUB screen is reached, but then remains black for the rest of the
session.
When starting Ubuntu in Unity mode with effects enabled, the MacBook
fails to update the screen once the iMac is connected. It either goes
black or freezes, with the cursor still intact. The iMac remains dark.
When starting Ubuntu in classic mode without effects, the MacBook screen
works as usual without freezing. When the display port is plugged in,
the display goes blank for a second, but then returns properly. Yet, the
iMac remains dark.
Still, the iMac is properly recognized. Via the "Monitors" configuration
dialog, I can set its proper resolution and arrange it, yet it doesn't
react.
The video card is an Intel one - I can't get the exact model right now,
but the responsible kernel module is called "i915".
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https://bugs.launchpad.net/bugs/790126
Title:
iMac connected to MacBook in Target Display Mode shows black screen
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