[Bug 94169] New: Connecting TV to HDMI reports no signal

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94169

            Bug ID: 94169
           Summary: Connecting TV to HDMI reports no signal
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: Paul at paulmorabito.name
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Hardware:
Intel Skylake i3 6100
ASRock B150M mainboard.
Samsung 55JS7200 TV.

Software:
Ubuntu Server 15.10, Kernel 4.4.1.

Description:
Trying to connect my HTPC box to a new television. If I disconnect HDMI from
existing TV and plug it into the new TV then I get a picture. If I restart
X/Kodi after doing so, then it's no signal. Likewise, xrandr says it can't open
the display.

If I reboot, I don't even see the BIOS screen or grub bootloader on the new TV.
If I connect back to my old LG TV, then unplug, I can see the screen again.

I've tried connecting using three different HDMI cables and every port on the
new TV with the same result.

some logs:
dmesg: http://paste.ubuntu.com/15074111/
xorg.log: /var/log/Xorg.0.log

I've tried connecting other devices, laptops to the same HDMI ports on the TV
and they all work fine.

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