High-Definition Multimedia Interface (HDMI) is a compact audio/video interface for transmitting uncompressed digital data.

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14.04 HDMI output channels

Mag Zotec with NVidia chipset. Mythbuntu 14.04LTS upgraded from 12.04LTS aplay -l **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: ALC888 Analog [ALC888 ...
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Audio output via HDMI sound like Chipmunk in Ubuntu 14.04

My audio output works just fine without HDMI plug in to my computer but when I plug HDMI and select audio output through my Samsung TV,the sound came out just like chipmunk style. Wherever I play ...
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28 views

TV screen not visisble after update Ubuntu

I am sorry to ask something that has been asked a lot in this forum. But I am having problems using my TV screens since I updates Ubuntu from 12.04 to 14.04. The problem is that Ubuntu is not ...
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28 views

Raspbery PI vid config for use in Ubuntu

This is another post in the numerous questions of "how to connect ubuntu to my TV". However, previous answers did not cover my scenario. SO, to start with, I do not have nVidia / descrete graphics ...
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11 views

trying to get built in analog sound working

Ubuntu 14.04 I am trying to get audio output from my built in line out set as default for all applications. I have an NVidia card that I use for video HDMI display to a monitor. My monitor does ...
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16 views

no audio except on system config

first of all i've done a bad thing: i was on ubuntu then i've switched to xfce (so no new install, sorry). it worked for a lot of time (6 months probably)... now i don't know why i cannot hear sound ...
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38 views

HDMI mirroring/HDMI-1 and no audio problem:

The audio comes from my laptop not from the TV. I am with idt high-definition audio. aplay -l: **** List of PLAYBACK Hardware Devices **** card 0: MID [HDA Intel MID], device 0: 92HD75B3X5 Analog ...
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26 views

inconsistent hdmi sound control (“normal” sound settings vs pulse audio volume control)

at first, in the standard ubuntu sound settings, no hdmi sound out option was available when having a tv connected to my notebook. i've solved this problem using pulseaudio volume control, where i ...
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24 views

Ku 14.10 no display to projector benq 1070

Trying to do: plug HDMI from projector to laptop running Kubuntu 14.10. Play video through HDMI running VLC player. What doesn't work: No display or info going to projector from laptop. blank screen ...
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2answers
43 views

How stop graphics from being slow despite latest NVIDIA drivers?

Time for yet another graphics card Q. Sorry in advance, but I have tried what I take to be the 'normal' way already (see below), so here it goes: I have an Intel Atom D525 1.8GHz with a discrete ...
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51 views

Ubuntu 14.04.1 (AMD64 ver) and RCA 42" TV

I'm not new to computers and have attempted Linux before ( many years ago) but am now trying to hook up a computer to my TV (for XBMC / Kodi use) via HDMI cable. I have installed 14.04.1, but it ...
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51 views

14.04 - Laptop screen goes blank when lid shut

I'll be totally honest, I have googled this question...I have read responses...but I'm still pretty confused...anyway... So, anyway, I want to hook up my laptop with HDMI to my TV...that part works ...
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1answer
39 views

Audio device changes on reboot

I'm using Ubuntu with Rise Vision for digital signage at our company. Its hooked up to a HDMI display with audio coming through the display. Its been working great until the end of summer after ...
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28 views

Impossible to get image back after hdmi connection

I have a Lenovo U430 with Intel family graphics (i think 4400) and a Nvidia card. I connected my 42" tv on the hdmi when the system was starting and the screen on the laptop became grey and the mouse ...
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1answer
65 views

Laptop-TV sync problems in ubuntu 14.04

I am using Dell Inspiron N4010 Laptop. Recently I have upgraded from Ubuntu 12.04 to Ubuntu 14.04. When I connect my laptop to my Sony Bravia Television through HDMI cable I can see my desktop ...
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1answer
19 views

Change startup resolution Unbutu server

I'm totally new at Unbutu/Lynux. I've installed the server on an old pentium 4 with 1gb of ram. The problem is that the monitor (Samasung LED 3d TV through HDMI) gives the message this resolution ...
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19 views

Macbook Pro7,1 Ubuntu 14.04 external monitor

I have a macbook pro7,1 and I have just installed ubuntu 14.04. I try to connect it to an external Asus monitor, using a mini-display(thunderbolt) to HDMI wire. I get an error message saying: ...
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22 views

laptop sees two connections when HD TV is plugged, but no image

With Apple Macbook Air 1,1 (Early 2008) and Ubuntu 12.04 with kernel Linux 3.2.0-68-generic-pae, when I connect it to an HD TV via the micro-DVI to DVI (Apple adapter) --> DVI to HDMI (I tried two ...
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1answer
97 views

Gnome 14.04 64-bit: HDMI Resolution 1920x1080 but displayed as 640x480

I just did a fresh install of ubuntu gnome 14.04 64 bit. During the installation I had my 22" screen attached to it and the image looked good and no problems at all. Problem I connected my tv with ...
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1answer
48 views

Configuring multiple monitors to use Custom EDIDs

A few months ago, I purchased a Korean 1440p monitor - the X-Star DP2710 LED. Out of the box, it does not work correctly with Ubuntu, which detects a corrupted EDID over the DVI cable, and refuses to ...
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1answer
53 views

ubuntu Server asus chromebox won't boot unless I have a hdmi display plugged in

So I installed Ubuntu Server on my Asus Chromebox, all works great except I have a strange issue. Ubuntu won't boot unless I have a hdmi display plugged in I've tested this over and over. If I plug ...
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131 views

Ubuntu 14.04 Dell XPS15 HDMI Not Detected

After some actualization my HDMI died. Can someone help me ? Ubuntu 14.04 LTS Dell XPS15 l502x Graphic Driver X.org X server - Noveau -- On system config / displays .::. only appears the ...
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1answer
85 views

Nvidia X Server Settings only shows 1 screen (laptop + external monitor connected)

I have recently installed a new copy of Ubuntu 14.04 on my Dell M3800 which has Nvidia Quadro K1100M graphics card. Later I also connected my external monitor via HDMI (HDMI to DVI connector). Then ...
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44 views

Ubuntu 14.04 HDMI stripes on screen during mouse movement

i've installed ubuntu 14.04 64 bit on Acer 5738Z laptop with radeon mobility 4500 series. I got issue with external screen (EIZO FS2331), it's connected to laptop througth HDMI. When i use computer ...
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19 views

Xubuntu dual monitor broke display

After I used Settings > Display to enable my second monitor, my first display is not working anymore either. So I enabled both, then clicked save configuration since it was working and boom it ...
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104 views

Ubuntu 14.04 64-bit: Resolution reset after reboot / HDMI display wrong colors

Situation I have attached my pc, which has a nvidia geforce GT-610 graphics card, to my samsung led tv with an hdmi cable. I have ubuntu 14.04 installed. Problem The image doesn't seem to be ...
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1answer
64 views

HDMI Output Not Working Properly

Excuse my bad photographs but hopefully they help to illustrate the problems I'm having. The colour is messed up and does not look as it should. In addition to this I also do not have any audio ...
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52 views

High pitch sound from tv conected to hdmi

Audio does work but there is a high pitched sound coming from the tv when it is connected and selected as sound output via hdmi in ubuntu 14.04. I have not tinkered with any drivers or sound configs. ...
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2answers
35 views

HDMI sound out only sends left speaker

I have my 14.04 machine hooked up to my Sony Bravia TV via HDMI. When I tests the left and right speaker I only get a sound when I click on the left speaker. My TV has stereo output to my amp so sound ...
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64 views

how to automatically initialize HDMI audio output

Every time i connect my 64 bit Ubuntu 14.04 laptop to the TV via HDMI, i have to run a bash command to make the HDMI audio output option visible in System Settings -> Sound : speaker-test -c 2 -r ...
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13 views

How to get HDMI sound devices inside LXC?

I created LXC container in 12.04.3 Server and installed Gnome Display Manager to it. Now GDM works well, but I don't have HDMI sound. ubuntu@quintilis:~$ aplay -l aplay: device_list:252: no ...
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2answers
176 views

Unable to get audio through HDMI connection to TV with Ubuntu 14.04

I'm having trouble getting audio through my TV which is connected via HDMI. The item is available (HDMI / DisplayPort 2) via sound settings, but it doesn't play any sound. I'm able to get the volume ...
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80 views

Multiple Monitors Detect Add Remove Laptop Auto Change Nvidia X Server Settings

Physical Setup; 4 monitors, 1 laptop, 1 hdmi switch box, 1 graphics card used for all 4 displays. Monitors listed in nvidia x server settings as; CRT-0, DFP-1, DFP-3, DFP-4. Short description of ...
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1answer
262 views

HDMI audio not working on TV

I am trying to connect my 64 bit Ubuntu 14.04 Dell Inspiron laptop to my Sony LCD TV with HDMI. The video works, but the audio does not. It continues to give audio from the laptop, not from the TV. ...
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1answer
28 views

Turn Monitor Back On after xrandr

I keep my Laptop PC always connected to my HDMI tv. When I am watching a movie on the tv, i use the command xrandr --output LVDS1 --off to turn my laptop screen Off (it is annoying to see the movie on ...
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57 views

No sound on any web browser [closed]

I was using my laptop to play Youtube on my TV. I had no problems. It was going through my HDMI and I was using the cable to play sound through the TV. I disconnected the cable and since then there ...
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114 views

Second screen not working with Kubuntu 14.4 or any other Ubuntu OS

I have an Nvidia Geforce graphics card and have been searching for weeks for a fix to get both screens working and have no idea how to fix this issue. Both screens are hooked up with HDMI cables. I am ...
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2answers
176 views

Overscanning picture problem using HDMI with Intel Graphics

When I use my laptops HDMI on a TV the TV overscales the picture (~5-10% is missing at the edges). There is no option on the TV (sporting a 720p resolution btw). The comp is running Intel HD Graphics ...
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0answers
125 views

Problems with HDMI output resolution using Xubuntu 14.04

I got a problem using Xubuntu 14.04 LTS while connecting it to the HDMI port from a Samsung LN40R81. Straight to the point, the resolution is lower than the required (1366 x 768). This resolution ...
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29 views

Occasional HDMI hiccups for a few seconds on NUC with Ubuntu 14.04

I have an Intel NUC system with Ubuntu 14.4 installed. Occasionally, the screen (a Philips TV connected using a HDMI cable) will go black and mute, then come back to life a few seconds after. I ...
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38 views

Detect connected monitor

I have an ubuntu 12.04 server running with an integrated intel VGA. There is a screen connected permanently as an "info monitor". Sometimes power is removed from the screen and i want to detect that ...
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1answer
138 views

How to choose default output port (boot screen) in a nvidia card?

I have a NVida card and binary drivers. I have my monitor connected at the vga port and the TV at the HDMI port. When the computer boots, the grub menu and sometimes the login screen goes to the TV ...
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1answer
65 views

external HDMI monitor turns off after a few minutes

When connecting my 14.04 ubuntu laptop with HDMI to my TV, the image is turned off after a few minutes, even when connected to the power. I then move the mouse and the image returns. How can I prevent ...
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215 views

Second monitor no longer working on Ubuntu 14.04 [Intel]

My laptop is an Acer Aspire M and I used to connect a second monitor through hdmi regularly. About a month ago, it simply stopped working. I don't really know anything I can do, so any help would be ...
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46 views

HDMI not recognized

I'm running Trusty on my G500 Lenovo laptop, with inter graphics. I just bought a DELL P2214H screen, but my computer recognizes only the VGA, trying to use the HDMI port (with a HDMI 2 Display Port ...
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1answer
74 views

HDMI TV Issues with Acer V3-571 laptop

Im a complete Linux novice. Iv installed Mint today on my laptop. So far so good. However Im having a few teething issues with regards to my HDMI connection. When I connect to my TV via HDMI the TV ...
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92 views

External Display HDMI out not working

I know this may be a stupid question but are Samsung monitors supported in Ubuntu? I ask because I've recently switched over from windows to Ubuntu 14.04 on my laptop. I have a Samsung monitor I user ...
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13 views

WQHD HDMI GeForce 460M

I have the proprietary nvidia driver installed in Ubuntu 13.04. I have a toshiba qosmio laptop with the GeForce 460M GPU. In windows, I was able to use the configuration utility to successfully get it ...
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205 views

Why is XBMC failing to play audio from my HDMI port?

I have the following setup: Ubuntu 14.04 Server Latest Nvidia video drivers ALSA installed PulseAudio NOT installed XBMC 13.1 Gotham installed The problem: running speaker-test -c2 -D plughw:1,7 ...
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208 views

Installing NVIDIA drivers for GeForce GT 525M on 14.04

I've been trying to install NVIDIA drivers for 14.04 so I can use a HDMI output on my laptop. However each time that I have tried to install nvidia drivers my screen is blank after logging in. I've ...