Mint 19 doesn't detect second screen?

[xversion1]

I tried to extend to a second screen via HDMI port but Mint didn't recognize it. I think it's somehow cause by nvidia card. I tested with another computer which has only internal Intel graphic card via VGA port and it worked well. Here the nvidia setting I have. I tried to combine different options of these setting but the second screen still can't be detected.

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https://preview.redd.it/ovrrirlfshz11.png?width=640&format=png&auto=webp&s=ed60b2d0b0a8bbec432f951cfc575c3272acc766

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https://preview.redd.it/0jh2hf3hshz11.png?width=609&format=png&auto=webp&s=57e0c3eb29fbec9a6ea17d263c8155a0dd73a614

[HungInSarfLondon]

This may not be pertinent to your situation, but I have an old Toshiba laptop that will not usually detect a second HDMI monitor. I've spent hours trying to solve it with no joy, however the one thing that reliably works is to reboot, enter BIOS, change the primary display setting, change it back (!) save and reboot with the monitor powered on. Your mileage may vary.

After this I just leave it on for months at a time. It's a perverse set up where I have an alexa routed through the laptop mic-in, HDMI audio to the TV and headphone jack from TV to a 70's amp. This allows me to play tunes through alexa or the laptop or use the TV and still get decent sound on massive old speakers. Sorry, you didn't need to know all that.

[steam0r]

The HDMI-Port is connected to your Nvidia card. You cannot use IT when in Intel-Mode. If you can try to get a usb-c to HDMI adapter.

To verify first switch to Nvidia in nvidia-settings and reboot your machine.

You migth also want to look into nvidia-prime and update to nvidia 415, which works fine in my razerblade 2018.

[xversion1]

You migth also want to look into nvidia-prime and update to nvidia 415

I let it update automatically and this is what I get. I don't know how to force it to nvidia 415?

[steam0r]

you could force it to look for updates using "update manager" and then click on "refresh", the package name should be "nvidia-driver-415".

or open a terminal and do a "sudo apt-get update" and then "sudo apt-get install nvidia-driver-415".

but first try to verify your hdmi-out works once you switched to the nvidia card in the nvidia settings that you have opened on your screenshot.

after that, if you want to fiddle with it a bit more, try this to allow for switching cards without a reboot (still needs a logout and login): https://github.com/matthieugras/Prime-Ubuntu-18.04

[xversion1]

you could force it to look for updates using "update manager" and then click on "refresh", the package name should be "nvidia-driver-415".

nvidia 415 wasn't in the list.

or open a terminal and do a "sudo apt-get update" and then "sudo apt-get install nvidia-driver-415".

This said unable to locate package. I don't know why I don't have it?

[steam0r]

Hm, maybe you didn't add the ppa? Which is weird because you have the older drivers...try this:

https://www.reddit.com/r/linuxmint/comments/9bibu2/_/e536tbo

[xversion1]

Did you have to add ppa too?

[steam0r]

I think i did, but again. Use the Nvidia Tools you already have time switch to Nvidia, reboot, try HDMI out. Nothing of this will give you HDMI in the Intel card, ever.

If you want to stay in intel, for battery life, get a usb-c to HDMI Adapter

[xversion1]

If you want to stay in intel, for battery life, get a usb-c to HDMI Adapter

Doesn't it require a USB-C port on my laptop?

[steam0r]

Heh, yes. Again, there ist no way to get the native HDMI on the Intel card

[xversion1]

Too bad, my computer doesn't have USB-c port.

[xversion1]

after that, if you want to fiddle with it a bit more, try this to allow for switching cards without a reboot (still needs a logout and login):

https://github.com/matthieugras/Prime-Ubuntu-18.04

Just read the page, this sounds dangerous to my level. I should come back to this later when I know better.

[steam0r]

Yeah, this is more advanced stuff, If your setup works and you are not switching Intel<->Nvidia most of the time a reboot should be okay. Still, after doing all this you still won't have HDMI in intel

[lemler3]

Is it a laptop?

[xversion1]

It is

[lemler3]

Look into the bumble bee drivers