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I have a MSI Laptop running on windows 10 and a plug and play Ubuntu 20.04 on a Samsung Portable SSD T5

When using Ubuntu, I am trying to use a second monitor via HDMI however nothing happens when I connect it.

I am new to Linux, What should I do?

Note: When I am using Windows, the HDMI port is working as expected

arnino
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  • Ubuntu might not support your GPU out of the box. Could you open a terminal and execute inxi -G? Copy the output from the terminal into your question (use the edit link) – kanehekili Feb 22 '22 at 10:14
  • @kanehekili From the self-answer it seems like Ubuntu 20.04 does support the MSI laptop's GPU, but it does not support it out of the box however the proprietary graphics drivers can be installed by running sudo ubuntu-drivers autoinstall – karel Feb 22 '22 at 10:17
  • Thanks, I didn't recognize the self-answer. So I'll assume its a nvidia GPU – kanehekili Feb 22 '22 at 11:21
  • In my case, sometimes it works after rebooting, other time after connecting other display and then - back my primary monitor. Time to time, nothing helps at all. – qba-dev Feb 22 '24 at 15:14

4 Answers4

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Check if you have the latest drivers

sudo ubuntu-drivers autoinstall

Then check for your additional drivers. Try to go to

  • Software & updates
  • reboot

This resolved my issue, I think because ubuntu did not recognize drivers because of some updates.

Inspired from this: https://askubuntu.com/a/1276794/1573261

arnino
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  • Please note that ubuntu-drivers autoinstall is deprecated. Running ubuntu-drivers -h returns some output containing the message "Deprecated, please use 'install' instead" – Peter Bergman Aug 01 '23 at 21:41
  • My output, for Ubuntu 23, is: All the available drivers are already installed. and that didn't resolve my problem. HDMI suddenly not working after standby laptop (which I did several times until today) – RobyB Nov 09 '23 at 07:16
  • Similar to RobyB except my message was No drivers installed. – AdamO Feb 07 '24 at 20:29
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I've been through this problem for a few months. I tried all almost all answers in google and still could not solve it

[Solved] turns out that disabling secure boot in bios fixed the problem *please learn about secure boot before disabling it

Kiart Tantasi
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When I updated to Ubuntu 22.04 I started getting ACPI errors and my HDMI port no longer was working on my newer Samsung laptop. The following hid the ACPI errors and curiously fixed my HDMI output. This was found on linux.org related only to ACPI errors but it worked for the HDMI issue too. I cannot explain why it worked but the errors occurred the same time my HDMI port stopped working.

  1. sudo gedit /etc/default/grub
  2. edit line with GRUB_CMDLINE_LINUX_DEFAULT and add loglevel=3, it should look like GRUB_CMDLINE_LINUX_DEFAULT='quiet splash loglevel=3'
  3. sudo update-grub related
  4. reboot

When I did this everything worked again, hope this helps someone it has been a frustrating problem.

opisthofulax
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Mi E
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In my case, one process was blocking ~/.config/monitors.xml file, so it was not writable. Only fresh monitors were working fine, old ones were ignored. I removed that file to reset all settings. Now the HDMI port works fluently with my displays.

My setup

  • Ubuntu 23.10
  • Gnome 45.2
  • Dell Precision 7520
  • Intel HD 630
  • Nvidia Quadro M2200
qba-dev
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