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[ SOLVED ] No display on HDMI out

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No display on HDMI out
« on: October 18, 2018, 12:17:37 AM »
 

phirephoto

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So not sure if this is the right category, but I have HP laptop, AMD GPU, AMD CPU, HP 17-ak001ds . I've connected my TV to the HDMI out on the laptop, but can't get LL to recognize it.
Linux Lite 4.0 (GNU/Linux 4.15.0-36-generic x86_64)

Any suggestions on what to try?

Thanks :)
Last Edit: December 01, 2019, 08:57:33 PM by firenice03
 


Re: No display on HDMI out
« Reply #1 on: October 18, 2018, 09:29:40 AM »
 

trinidad

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Connect the TV and Laptop together. Make sure the TV has the right HDMI source. Reboot the Laptop. Open up settings and find >Display. There should be two displays listed. Select the TV display. You may have to adjust the resolution to suit you.

TC
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.
 

Re: No display on HDMI out
« Reply #2 on: October 18, 2018, 12:24:55 PM »
 

phirephoto

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Connect the TV and Laptop together. Make sure the TV has the right HDMI source. Reboot the Laptop. Open up settings and find >Display. There should be two displays listed. Select the TV display. You may have to adjust the resolution to suit you.

TC

Yep, TV is selected to the right input, rebooted with HDMI connected, Display shows only the laptop. :(
 

Re: No display on HDMI out
« Reply #3 on: October 18, 2018, 04:10:34 PM »
 

bitsnpcs

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It sounds like you are asking how to output the tv/stream it, to the laptop, so the laptop screen shows the tv ?
You may need a TV capture card for this.
Another way is you can install Kodi from Menu>System>Lite Software
to watch tv and not need your laptop to be attached to the tv.
 

Re: No display on HDMI out
« Reply #4 on: October 18, 2018, 04:15:44 PM »
 

phirephoto

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It sounds like you are asking how to output the tv/stream it, to the laptop, so the laptop screen shows the tv ?
You may need a TV capture card for this.
Another way is you can install Kodi from Menu>System>Lite Software
to watch tv and not need your laptop to be attached to the tv.

Sorry, no - other way around. Want PC to show on television, ie as an external monitor.
 

Re: No display on HDMI out
« Reply #5 on: October 18, 2018, 04:34:27 PM »
 

bitsnpcs

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Okay, in Menu>Settings Display
Have you checked the "mirror" setting ?
 

Re: No display on HDMI out
« Reply #6 on: October 18, 2018, 05:03:58 PM »
 

phirephoto

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Okay, in Menu>Settings Display
Have you checked the "mirror" setting ?

There's no options. http://www.espphotography.com/display.jpg   

The Default drop down has no choices in it.
 

Re: No display on HDMI out
« Reply #7 on: October 18, 2018, 06:22:38 PM »
 

bitsnpcs

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Have you tried another HDMI cable to rule that out ?
 

Re: No display on HDMI out
« Reply #8 on: October 18, 2018, 06:34:14 PM »
 

phirephoto

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Have you tried another HDMI cable to rule that out ?

God I'l laugh if it's that simple.. Pretty sure this one worked last I used it, but let me see if I can find another one or swap some things around and try.
 

Re: No display on HDMI out
« Reply #9 on: October 18, 2018, 06:41:00 PM »
 

phirephoto

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Nope. Tested cable with another device and used a different cable that worked (on a nintendo switch), no go.

Not sure if it makes a difference - I boot with nomodeset as a kernel param - that's not affecting it is it?
 

Re: No display on HDMI out
« Reply #10 on: October 18, 2018, 06:49:39 PM »
 

bitsnpcs

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I am not positive.

"Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded."
https://ubuntuforums.org/showthread.php?t=1613132

Based on this, it seems once the desktop is loaded it would not be in use.
From the other replies it shows how the commands discussed can affect a range of hardware after boot.
Last Edit: October 18, 2018, 06:52:29 PM by bitsnpcs
 

Re: No display on HDMI out
« Reply #11 on: October 18, 2018, 07:06:59 PM »
 

bitsnpcs

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unplug the hdmi cable from the laptop, leave it plugged in to the tv.

Open your terminal and type -

Code: [Select]
sudo udevadm monitor
enter your password when asked.

Plug the HDMI cable in to your laptop hdmi port, then unplug it from the laptop hdmi port.

Post the resulting terminal message in your reply.
If your laptop has more than one HDMI port repeat this in each port.
Last Edit: October 18, 2018, 07:11:50 PM by bitsnpcs
 

Re: No display on HDMI out
« Reply #12 on: October 18, 2018, 07:42:37 PM »
 

phirephoto

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I am not positive.

"Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded."
https://ubuntuforums.org/showthread.php?t=1613132

Based on this, it seems once the desktop is loaded it would not be in use.
From the other replies it shows how the commands discussed can affect a range of hardware after boot.

Well, this laptop has been a PITA. This was really the second *nix o/s I could get installed. Tried a dozen others, all crashed at some point during install or boot. Was able to get this installed, but wouldn't boot (to a display). I have the error written somewhere, but googling it said to add nomodeset. I'll see if I can find the error, maybe you have a different idea, but without nomodeset, I get a black screen on boot, nothing else..
 

Re: No display on HDMI out
« Reply #13 on: October 18, 2018, 07:46:25 PM »
 

phirephoto

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unplug the hdmi cable from the laptop, leave it plugged in to the tv.

Open your terminal and type -

Code: [Select]
sudo udevadm monitor
enter your password when asked.

Plug the HDMI cable in to your laptop hdmi port, then unplug it from the laptop hdmi port.

Post the resulting terminal message in your reply.
If your laptop has more than one HDMI port repeat this in each port.

Only one HDMI port.. Plugged it in for 20 seconds, unplugged it. No messages displayed.
 

Re: No display on HDMI out
« Reply #14 on: October 18, 2018, 07:49:53 PM »
 

bitsnpcs

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Okay can you try the same process using this command

Code: [Select]
sudo udevadm monitor --debug
 


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