This does look a lot like a driver bug rather than unity. We'll be
getting a new -ati driver along with lots of other new X bits within a
week and a half or so, which might make the issue go away completely.
If not, we can forward the issue upstream once it's confirmed on the
newer versions.
Meanwhile, could you also collect register dumps before and after?
sudo apt-get install radeontool
After installing it, you run it like this:
avivotool regs all > regdump_good.txt
avivotool regs all > regdump_broke.txt
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-ati in ubuntu.
https://bugs.launchpad.net/bugs/700515
Title:
ubuntu-bug xorg_Strange White Lines
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