[Bug 78269] [All Regression]igt/testdisplay unable to exit sporadically

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78269

--- Comment #3 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to comment #2)
> (In reply to comment #1)
> > Is this a regression?
> 
> Yes, It's a igt regression issue, but some commit unable to make.
> 
> The first bad commit could be any of:
> 3d9e63f2ad0c676b3efba4c854ef645ae60ee7e1
> 7255a84c9c8f4d46b47d490331100a11179180a1
> 7568edf4b1dd0f8c1b061a2bb53d593ff9d4d33d
> 896b550984cf3ffd0fa67051d5b9cf0239634894
> ae461e67e8816aa7cd80791216a839d92e04f0e5
> 669a2fca6c5ccd256d2d767107963840f7de438e
> c6c2b2bb7039e8cc89841bd9782a61b7d734dfe2
> 64401f57e958998d537ff67525d5f1e9a4f76b22
> 961a46c82b4fe558ea726833aa9d390382742a10
> 9048aa1974aee567617220f9685ad115be0cbae7
> We cannot bisect more!

I tried to revert these commits one by one, and found
that7255a84c9c8f4d46b47d490331100a11179180a1 maybe the first bad commit.

commit 7255a84c9c8f4d46b47d490331100a11179180a1
Author:     Jesse Barnes <jbarnes at virtuousgeek.org>
AuthorDate: Wed Mar 26 11:02:48 2014 -0700
Commit:     Jesse Barnes <jbarnes at virtuousgeek.org>
CommitDate: Wed Mar 26 11:13:23 2014 -0700

    testdisplay: make termio unbuffered

    So hotkeys take effect immediately.

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