[Bug 108577] Black X laptop screen with cursor if HDMI not plugged in, bisected - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 108577] Black X laptop screen with cursor if HDMI not plugged in, bisected
Date: Sun, 28 Oct 2018 01:53:53 +0000	[thread overview]
Message-ID: <bug-108577-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=108577

            Bug ID: 108577
           Summary: Black X laptop screen with cursor if HDMI not plugged
                    in, bisected
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: duncan_roe@optusnet.com.au

Created attachment 142239
  --> https://bugs.freedesktop.org/attachment.cgi?id=142239&action=edit
Git diff specifying 2 commits (GD is aliased to git diff)

(High severity because laptop is useless when travelling)
With HDMI unplugged, X laptop screen is black with only a cursor. Cursor
changes shape as it moves over xterm windows put there by xinitrc.
Bisecting in git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git finds
2bfb0b678e48dee76543bfa2079b7e42609332fb has the problem but adjacent commit
9c24c10a2c1e1bb478b6bb70612d9e885aee044f does not.
There is an oddity with git diff between these two: git diff <commit1>
<commit2> produces copious output and a git warning (see attachment), but git
checkout <commit2>; git diff <commit1> only shows one patched file (next
attachment). You might want to try this - I re-cloned the repo in case the old
one was corrupted but it made no difference.

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