[Bug 103472] New: VGA detection fails after the second try, i915 Intel HD400

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103472

            Bug ID: 103472
           Summary: VGA detection fails after the second try, i915 Intel
                    HD400
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: pablodebiase at nanalysis.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135084
  --> https://bugs.freedesktop.org/attachment.cgi?id=135084&action=edit
Before plugging in the VGA cable: full dmesg with drm.debug=0x1e log_buf_len=1M

System:    Host: nmr Kernel: 4.4.0-97-generic x86_64 (64 bit) Desktop: Gnome
           Distro: Ubuntu 16.04 xenial
Machine:   Mobo: N/A model: N/A v: 1.0 Bios: American Megatrends v: 5.11 date:
10/20/2016
CPU:       Dual core Intel Celeron N3060 (-MCP-) speed/max: 1762/2480 MHz
Graphics:  Card: Intel Device 22b1
           Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1024x768 at 59.87hz
           GLX Renderer: Mesa DRI Intel HD Graphics 400 (Braswell)
           GLX Version: 3.0 Mesa 17.0.7
Network:   Card-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
Controller
           driver: r8169
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
Controller
           driver: r8169
           Card-3: Realtek RTL8821AE 802.11ac PCIe Wireless Network Adapter
driver: rtl8821ae
Drives:    HDD Total Size: 64.0GB (12.0% used)
Info:      Processes: 174 Uptime: 42 min Memory: 592.3/7909.5MB
           Client: Shell (bash) inxi: 2.2.35

Display connector: VGA

The computer has a build-in LCD screen. The driver detects an external monitor
connected through VGA but it fails to recognize it again if I unplug it and
plug it back. The HDMI connection is never working (bug reported here:
https://bugs.freedesktop.org/show_bug.cgi?id=103471).

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