Re: [LUG] HDMI

Thanks for the reply. Have installed newer driver stack. And here is the list of what is happening:

1. Installed Ubuntu via HDMI and all seemed fine

2. AFter install rebooted and display and sound working via HDMI

3. Starting installing additional drives etc during which sound stopped working. Just stopped.

4. Rebooted to try to restore sound. No video.

5. Attached a VGA cable - video restored - no sound. I could simply run a headphone jack cable to the monitor and then I would have sound and video but decided to fix HDMI. At this point I'm wondering whether I should just forget it!

Applied the update above. Removed the VGA cable on reboot. There is simply an error message on the monitor saying no signal. This is with the HDMI cable in. Reconnected the VGA cable. One of the bizarre problems I'm having is that the computer assumes I have 2 monitors attached. One via VGA and one via HDMI even though the HDMI cable is not attached. In system settings I have to mirror the display or I can't see half of my desktop!

Thanks for all the help. Is it worth at this point simply connecting a speaker jack cable and use VGA etc.

Rich

On 2 September 2017 at 16:22, mr meowski <mr.meowski@xxxxxxxx> wrote:

On 01/09/17 07:11, Richard Brown wrote:
> Hi
>
> Linux rich-desktop 4.10.0-33-generic #37-Ubuntu SMP Fri Aug 11 10:55:28
> UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Can we just clarify a sec exactly what you mean by "monitor not working
on HDMI"? Do you mean it's completely non-responding, or does the
BIOS/EFI display during boot, text mode boot messages show up and only X
doesn't work? Does the system boot at all when the monitor is on HDMI?
Presumably it's just sat there waiting for input (this is what you need
SSHD running for to find out) but is actually operational. Can you
access the other VTTYs by hitting CTRL+ALT+Fx? With the HDMI connected
monitor non-responsive, after booting the machine try hitting
CTRL+ALT+F4 a couple of times - it *should* drop you to a text mode
login prompt (but probably won't thanks to the way Ubuntu/systemd have
messed with stuff over the years).

I'm loathe to give you more advice without knowing a bit (actually,
quite a lot) about what's going on here.

That being said, it certainly won't hurt also installing a slightly
newer patched Mesa and friends. A 4.12 kernel would also be a good idea
but thanks to Ubuntu being Ubuntu they as usual haven't bothered
releasing a trivially installable mainline version yet.

Kabylake and newer silicon is still a bit sketchy in terms of support
I'm afraid (in all OS's, including Windows), although you really
shouldn't be having this many issues just getting a basic HDMI display
up and running out of the box.

Install newer driver stack:

sudo add-apt-repository ppa:oibaf/graphics-drivers
sudo apt-get update
sudo reboot

Cheers
--
The Mailing List for the Devon & Cornwall LUG
https://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/listfaq

Kind Regards

Richard Brown

07747 343637

http://gucu.org.uk/

http://littlebigfoot.org.uk/