Bug 94169

Summary:	Connecting TV to HDMI reports no signal
Product:	DRI	Reporter:	Paul Morabito <Paul>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	CLOSED WORKSFORME	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	blocker
Priority:	medium	CC:	intel-gfx-bugs
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:	SKL	i915 features:	display/HDMI

Description Paul Morabito 2016-02-16 00:46:37 UTC

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.

Comment 1 Paul Morabito 2016-02-18 03:18:24 UTC

Hi,

I tried replying to your email directly but it bounced.

Thank-you so much for replying. I really appreciate any help I can get. I tried to install and I'm getting the following errors:

---
paul@seunga:~$ intel-linux-graphics-installer
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(intel-linux-graphics-installer:10616): Gtk-WARNING **: cannot open display:
---

I guess this is because I am running from a terminal without an X session? I have a very minimal Xorg setup to run Kodi only. Is there a command line option for installing? I couldn't find reference to one in the forums on the site.

Also, how does this differ from the kernel drivers? Looking at the packages ,they look the same as far as I can see? If I'm running kernel 4.4.1, is that more up to date?

Thanks,

Paul Morabito.

Comment 2 Paul Morabito 2016-03-09 00:52:19 UTC

Hi,

Just to let you know I no longer have this television anymore so cannot debug further. The issue was however occuring with the installation of the latest drivers and also three different televisions of the same model.

I've exchanged for another TV now which is working fine.

Comment 3 Jani Nikula 2016-04-21 12:07:46 UTC

(In reply to Paul Morabito from comment #2)
> Hi,
> 
> Just to let you know I no longer have this television anymore so cannot
> debug further. The issue was however occuring with the installation of the
> latest drivers and also three different televisions of the same model.
> 
> I've exchanged for another TV now which is working fine.

Sorry we were not able to help you; closing since you obviously can't debug this anymore.

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