Questions tagged [hdmi]

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

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Lenovo USB C “Travel Hub” not working (no usb, ethernet, hdmi) on Ubuntu 20.10

I have a known working USB C "Travel Hub" from Lenovo. It is detected by lsusb as a `Linux Foundation USB 3.0 root hub'. When I try to use it, however, there is no display output, ethernet ...
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Certain programs disable second monitor

For some strange reason, whenever I open the Evolution mail client my second monitor gets disabled. If I unplug and re-plug it in, it is still blank. When I run xrandr I see: Screen 0: minimum 320 x ...
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HDMI not working with nVidia drivers post upgrade to 21.04 from 20.04

After upgrading from 20.10 to 21.04 I do not have access anymore to my HDMI plugged in TV. The display menu does not show anymore Detect Displays nor allows me to select HDMI. I did try many cables ...
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Connecting multiple monitors through USB C adapter

I am using a USB C adapter with my laptop which has Ubuntu 21.04 installed. I am only able to use one HDMI cable at a time and cannot connect two HDMI cables at once. I am able to connect multiple ...
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HDMI port not working with Ubuntu 20.04 and Nvidia GeForce RTX 2080 card (on a ThinkPad T15g Gen 1)

I have a ThinkPad T15g Gen 1 fresh from the factory with Nvidia GeForce RTX 2080 as its graphics processor. With Ubuntu 20.04 everything works out of the box but the HDMI port: the external monitor ...
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Ubuntu 21.04 - No sound and empty sound devices

I am quite new to ubuntu and after fresh installation (I use dual boot with Win 10) I have found out there is no sound in a system. I have checked Settings/Sound but output and input devices are just ...
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Laptop cannot go to sleep correctly, after removing the hdmi cable from the TV

I often hook up my laptop Acer Swift 3 to my TV screen to watch movies. When I remove the HDMI cable, closing the lid of my laptop (putting it to sleep), and then opening the lid again I always get ...
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Black screens but detected after changing screens

I have a PC running Ubuntu 20.04 equipped with an I7 10510U processor without additional graphics card which worked fine with older screens. But since I tried to use my new 2 screens (Samsung Odyssey ...
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26 views

Second monitor is not working when I open system options (20.04 LTS)

I have a strange problem for which i can't figure out what is going on. I want to connect my laptop (Dell Latitude E7470 with Ubuntu 20.04 LTS) to an old VGA monitor I have. To do this i'm using an ...
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Is there any utility in kde plasma 5 (Kubuntu) to quickly adjust the resolution to the TV (overscan)?

I am using an old TV as a monitor, and as is common with hdmi connections to these devices, I am having problems with overscan (the resolution options are reduced and the edges of the screen are cut ...
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Ubuntu 20.04 does not display login screen, but I CAN login (blindly) and the desktop displays

I am running ubuntu 20.04 on an AMD Ryzen 7 machine with Nvidia graphics. I am outputting to monitor via HDMI of the graphics card to my Denon reciver, then to TV. I had everything working fine, ...
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36 views

HDMI output detected but no signal under Kubuntu

I am using Kubuntu 20.04. I have dual boot and used an HDMI TV to extend the screen, worked perfect so far. However, when I switch to Linux, the HDMI display does not receive signal at all (Displays ...
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Connecting a third monitor to System76 Ubuntu laptop

I have a System76 with an HDMI port, which I currently use for a second monitor. Ideally, I'd like to connect a third monitor and then turn off the laptop's screen as it's not great for my posture. My ...
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How to totally disable HDMI audio through Nvidia / Pulseaudio?

Original thread title: HDMI input switching causing popping / crackling with USB Audio - Pulseaudio problem? Original post: I seem to be having issues with HDMI effectively sending noise back to my PC ...
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23 views

External monitor does not wake up from standby

Notebook is an acer ryzen 4000 series, integrated AMD GPU ubuntu 18.04, 20.04, 20.10 monitor plugged via hdmi-dvi cable problem is cannot wake up monitor when connecting to hdmi-dvi cable. i need to ...
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hdmi not working - FX706IU

I have a (ASUS TUF Gaming A17 FX706IU-H7145T) I have installed ubuntu on the machine, but HDMI not working. There can i download the files? Can you help me? Thanks for your time Edit: 19-04-2021 20.34 ...
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When I unplug headphones, audio switches to HDMI out instead of laptop speakers

My HDMI port is connected to a VGA adaptor, so to get audio I have to manually switch the audio output to the speakers whenever I unplug my headphones. I've tested this with a mic'd headset and normal ...
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42 views

Why isn't my Ubuntu displaying on my dual monitors when I'm using usb-c? Is there something I can download or run on terminal?

Why isn't my Ubuntu displaying on my dual monitors when I'm using usb-c to dual HDMI? Is there something I can download or run on terminal? The monitors are being shown however, the display on the ...
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29 views

Noise through HDMI output

I tried to watch some streaming video on my led TV through HDMI output of my laptop. First, I have had only video on the TV and sound was coming through laptop speakers. Normally both audio and video ...
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22 views

External UPERFECT Monitor Laggy Over USB-C but Fine Over HDMI

I have a UPERFECT MDS-156G16 1080p touchscreen monitor. When connected via Mini-HDMI to my ThinkPad P14s running Ubuntu 20.04, the screen is smooth and works great. When connected to the same computer ...
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108 views

Ubuntu 20.04 LTS unable to detect second monitor

I have a desktop computer running on Ubuntu 20.04 LTS with the following hardware: 11th Gen Intel i5-11400 H510I PRO WIFI MSI motherboard no graphics card The motherboard has a DisplayPort and HDMI ...
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40 views

Ubuntu 18.04 HDMI problems

At the start of 2021, I bought two RPi 4 with 4GB of memory for a project. I already own 4 PI (2 OSMC, 1 Samba File Server/Deluge and a Volumio PI. The Volumio never worked. Neither did the ...
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Retain window position, primacy, panels, programs & audio when monitors turned on/off

This is my current setup. 3 is my main ultrawide monitor, connected by displayport to GPU. Always on. 1 is a secondary monitor, connected by DVI to GPU, sitting directly above 3. Currently always off, ...
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99 views

HDMI display detected with “no signal ” on Ubuntu 20.04 (Intel Graphics)

I have a Ubuntu 20.04 LTS desktop. I have two monitors each connected to a VGA and HDMI port. Both monitors were working fine until a few days ago. Now when I boot, the HDMI monitor doesn't turn on ...
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24 views

How to shutdown when HDMI is unplugged?

I use an old laptop as a media center PC. I want it to shutdown as soon as the TV is turned off, but only if it was connected before. How do I do that?
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29 views

External monitor not working with HDMI

I am using a DELL XPS 15 9570 laptop with UBUNTU 18.04 LTS. When I connect the external screen through HDMI, the screen is not working. I have tried multiple solutions found on internet but any of ...
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75 views

External display not always working through HDMI on Ubuntu 20.04 with kernel 5.11.11

I have Lenovo Legion 5 with Ryzen R7 4800H, Vega iGPU, Nvidia 1650. The laptop faces many issues on Ubuntu from the beginning which forced me to use kernel 5.11.11. Somehow I managed to have both ...
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46 views

Screen flickering XPS 13 9310 second HDMI monitor

On my Dell XPS 13 9310, when I try to use a secondary HDMI monitor, through an usb-c HDMI adapter, I get these screen glithces, mostly when I click on the other screen, or when I try to scroll the ...
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45 views

HD Audio not working

alsamixer can only detect HDMI as an output. So I turned off HDMI Audio in the BIOS then rebooted to Ubuntu. Now the settings only shows Dummy Output. I tried alsamixeragain but it returns cannot open ...
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21 views

Diplays configurations priority trouble when running DP and HDMI simoultaneously

I am running Kubuntu 20.04 using 2 displays: 1 DP and 1 HDMI, my main monitor is on the DP and on HDMI I have the receiver which is also connected to a projector. In Windows I have no trouble turning ...
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35 views

SSH session to HDMI

I have an ubuntu server 20.04.2 LTS running on NUC connected to an HDMI monitor. The server launches Kodi (media server) at boot and everything is working fine. Now I need to connect to this server ...
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45 views

LUbuntu 20.04 LTS Nvidia HDMI Audio PCM selected but no still no sound!

Following a fresh build of 20.04 I have determined through investigation that the Nvidia GT210 HDMI Audio is Card 1 Device 7 but whether GUI or Terminal I have been unable to make use of it & set ...
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10 views

Trouble returning from TV apps to desktop

I have a laptop hooked up to soundbar with HDMI that's connected to a TV with HDMI. I like to keep the laptop underneath the TV with lid closed. If I go a TV app like Plex for example I can't get back ...
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25 views

green screen after switching HDMI channels Ubuntu 20.04 (4k Samsung monitor)

I have 2 PCs connected to my monitor, one of then running Ubuntu 20.04 and FF in kiosk mode, playing slides (revo slider) When I switch to the other HDMI channel for some time and then switch back to ...
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21 views

HDMI sometimes doesn't get detected

Once in a while, the HDMI connection to an external monitor doesn't work. If I run xrandr, it does not show HDMI-1 disconnected (normal left inverted right x axis y axis). The output is eDP-1 ...
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97 views

Intel HDMI-1 disconnected Xrandr

I did a fresh install of Lubuntu 20.04, I had to use "graphic safe mode". My monitor is showing the boot screen / BIOS. If I add nomodeset to GRUB, it works with 800x600 resolution. It's a ...
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How to connect camcorder to Ubuntu via HDMI

My camcorder Panasonic includes an HDMI cable. Is there any software I can use to play the videos to my laptop via HDMI port? My system is Ubuntu 18.04.5 LTS.
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70 views

Can't use max resolution for external monitor “xrandr: Configure crtc 0 failed”

I have a 1440p monitor connected to my laptop via a HDMI cable and I can't set it to the max. resolution, it only stays at 2048x1080 (9:5). I have tried using the code below to set the max. resolution:...
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24 views

driver for microusb C to project to external display

I am using ubuntu 20.10 on a chromebook model is HP 14 G 5. . I have used external displays before using the 2 usb3.0 ports. I would like to install the drivers so that I can regain capability to ...
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61 views

Laptop HDMI output randomly stopped working

I use an old Dell laptop from 2011 as my secondary machine at home. It's always hooked up via HDMI to a monitor. I've had no problems at all with it until now. I booted up this evening and it just ...
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37 views

Upgrade to 16.04 LTS Audio Passthrough to HDMI Not Working Now

Just updated my media center running kodi to Ubuntu 16.04.7 from 14.04 because I wanted to use some new streaming apps like amazon prime working but now I can't seem to get audio to passthrough to my ...
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2answers
152 views

Issue conecting my PC to a TV

I'm running Ubuntu on a PC that I which to connect to a TV. I had trouble making my TV recognize the PC. It says that the resolution of the external device is not supported. Since I could not get an ...
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34 views

Can't change screen resolution in ubuntu 16.04

i can not click the button in Displays to change resolution, it is gray. Displays: and when I use xrandr, the following message is given: (base) cv@cv-MS-7B17:~$ xrandr Screen 0: minimum 8 x 8, ...
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33 views

ATI Radeon HD 3000 GPU: No Sound over HDMI

Colleagues, I have no sound on my Benq M2700HD HDMI monitor. I am using a computer with Asus M5A78L-M/USB3 motherboard. It has a built-in video adapter based on the ATI Radeon HD 3000 GPU chipset. ...
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37 views

Stop Ubuntu from switching audio devices

I'm running Ubuntu 20.04, I just recently got a USB to HDMI adapter so that I could add a second monitor to my laptop. The monitor sometimes disconnects for a second or so, which is annoying but I ...
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1answer
203 views

RPI4 and Ubuntu 20.04 LTS: Switch between headless and hdmi mode without any changes

I've installed Ubuntu 20.04 LTS on my fresh Raspberry Pi 4. The OS is configured to boot to desktop (xubuntu) and autologin is enabled. The Pi should boot either with an HDMI cable plugged in or in ...
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14 views

“Resolution not supported” message on TV after logging into Ubuntu 18.04

As the title says, after I enter my log in information for Ubuntu 18.04 my Samsung 4K TV displays "resolution not supported...please change external device's resolution" or something similar....
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24 views

Official Nvidia Driver does not show HDMI audio

I'm using Ubuntu 20.04. When I install xorg driver I can use Audio through HDMI. However using that driver causes performance issues. Changing driver to Nvidia 460, disables HDMI audio. I tried the ...
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1answer
72 views

Xrandr not detecting HDMI/Displayport inputs on Ubuntu 18.04. Default graphics renderer is also set to llvmpipe instead of intel

I've installed Ubuntu 18.04 and I'm experiencing issue with intel gpu drivers. I don't have nvidia gpu, only integrated one. As you can see below, xrandr does not detect any hdmi/displayport inputs, ...
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43 views

Second monitor not detected through HDMI

Using Ubuntu 20.10 on a Lenovo Yoga Slim 7 laptop, my external Asus monitor is not detected when plugged in to the HDMI port. A high-pitched noise comes from the region of the port when I do this. ...

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