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I can't use HDMI external display on my IdeaPad S340 with Nvidia GeForce MX230 and built-in Intel GPU.

I currently use nvidia-driver-435 (open source)

With my monitor plugged in i got following output:

HDMI is not listed in xrandr:

# xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP-1-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
   1920x1080     60.00*+
DP-1-1 disconnected (normal left inverted right x axis y axis)

Both GPUs are detected

# xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x1de cap: 0x1, Source Output crtcs: 0 outputs: 0 associated providers: 1 name:NVIDIA-0
Provider 1: id: 0x44 cap: 0x6, Sink Output, Source Offload crtcs: 3 outputs: 2 associated providers: 1 name:modesetting

# dmesg | grep -i nvidia
[    3.703922] nvidia: loading out-of-tree module taints kernel.
[    3.703931] nvidia: module license 'NVIDIA' taints kernel.
[    3.710560] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[    3.719549] nvidia-nvlink: Nvlink Core is being initialized, major device number 234
[    3.722844] nvidia 0000:01:00.0: enabling device (0100 -> 0103)
[    3.823205] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  435.21  Sun Aug 25 08:17:57 CDT 2019
[    3.847424] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  435.21  Sun Aug 25 08:07:52 CDT 2019
[    3.849538] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
[    4.635389] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1
[    4.648303] nvidia-uvm: Loaded the UVM driver, major device number 510.

Can anyone help me?

I already tried reconfiguring gdm/switching to lightdm, tried both noveau and nvidia-drivers

kubahaha
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    Please update your question with dmesg | grep -i nvidia – WinEunuuchs2Unix Oct 17 '19 at 10:38
  • I have exactly same problem on Dell Inspiron 5593. What's also interesting is that the screen brightness adjustment does not work. Have you managed to find a solution? – mactro Nov 08 '19 at 08:21
  • @mactro Importunately not. Let's try with some bouty – kubahaha Dec 03 '19 at 15:57
  • It might be hardware. I have an Del L502x which also has an Optimus graphics system. However, I can only use DisplayPort for the NVidia, and HDMI for the Intel. (Or inversely, I don't remember) It's wired like that. From what I understand, the same problem exists under Windows. – jawtheshark Dec 03 '19 at 17:13
  • I've had a lot of problems using nvidia cards in Laptops. Even if they work, usually suspend and hibernate won't work (reliable).. Since the performance gain using a nvidia card in a Notebook is not that large, could you try to activate the intel graphic card and check if it works? (you may have to blacklist your nvidia drivers) – kanehekili Dec 06 '19 at 19:16
  • It's not working even with Nvidia disabled – kubahaha Dec 07 '19 at 23:16
  • any relevant in cat /​var/log/gpu-manager.log – nobody Dec 09 '19 at 09:16

3 Answers3

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There is a package called mate-optimus that I use to make sure that my nvidia card is active. The problem for me, is that the nvidia card is not active by default and I have to explicitly turn it on.

Previously I was using nvidia-xrun to launch a full gnome session, but since I discovered the mate-optimus, I just use the little icon that it puts in the status bar to switch on the nvidia graphics which activates my hdmi.

Its in most repos I think, but more info is here: https://github.com/ubuntu-mate/mate-optimus

stratus
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I recently had this issue resolved on my laptop. I had manually downloaded drivers from the nvidia website but that wasn't the right way to do it.

Running this line

sudo apt install nvidia-driver-435

and restarting resolved it. (I also have a USB C port that worked for a second screen with HDMI adapter before I got this issue resolved)

Ubuntu 18.04.3 cant find second monitor - Dell G3 - NVIDIA 1060 TI

David B
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I solved this issue by disabling SecureBoot in BIOS settings. To do so follow this steps:

  1. while booting enter BIOS by pressing F2 key
  2. navigate with arrow keys to Security tab then disable SecureBoot
  3. save by pressing F10. Your PC should restart and HDMI should be working now.

Following those steps on my machine fixed the problem

kubahaha
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