External monitor via HDMI will not display; xrandr says HDMI disconnected; NVIDIA GPU
I had Ubuntu 22.04 and when I attach HDMI cable to hp external monitor, the monitor says no signal and then goes to sleep. I checked HDMI cable on another Ubuntu computer and it worked. I connected my Ubuntu computer to another monitor and get same message on screen. Whats strange is that everything was working fine and I made no changes to any setting. I update the computer whenever there is a notice so its possible it was some update but I dont keep track of every update since they come quite frequently. I upgraded to 24.04 and no change. It is not a bad monitor as I used my friend’s Ubuntu computer and connected same HDMI cable to it and it properly displayed. The ‘xrandr’ output shows HDMI connected (this computer does not have NVIDIA GPU).
I am a basic Ubuntu user and when I read other posts with similar issues and their suggested solutions, those solutions are WAY above what Im capable of. I need to have just a simple linux command to copy/paste into terminal. I can edit configuration files but simple ones. Thats about my the extent of my Linux capability.
I would appreciate any feedback. I have been able to get by with Ubuntu for nearly 10 years with many issues solved by finding commands to copy/paste but this is the first time I am seriously considering just going Apple (ill never use Windows - Id rather never use a computer). This is a tough one for me. I tried just about every posted solution out there but still here.
inxi -Fxz
CPU:
Info: 14-core (6-mt/8-st) model: 12th Gen Intel Core i9-12900H bits: 64
type: MST AMCP arch: Alder Lake rev: 3 cache: L1: 1.2 MiB L2: 11.5 MiB
L3: 24 MiB
Speed (MHz): avg: 422 high: 845 min/max: 400/4900:5000:3800 cores: 1: 400
2: 400 3: 400 4: 400 5: 400 6: 400 7: 400 8: 400 9: 845 10: 400 11: 400
12: 400 13: 400 14: 400 15: 400 16: 400 17: 400 18: 400 19: 400 20: 400
bogomips: 116736
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel Alder Lake-P GT2 [Iris Xe Graphics] vendor: Dell
driver: i915 v: kernel arch: Gen-12.2 bus-ID: 00:02.0
Device-2: NVIDIA GA104M [Geforce RTX 3070 Ti Laptop GPU] vendor: Dell
driver: nvidia v: 535.183.01 arch: Ampere bus-ID: 01:00.0
Device-3: Realtek Integrated_Webcam_HD driver: uvcvideo type: USB
bus-ID: 3-7:4
Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X:
loaded: modesetting,nvidia unloaded: fbdev,nouveau,vesa dri: iris gpu: i915
resolution: 1920x1080~60Hz
API: EGL Message: No EGL data available.
API: OpenGL v: 4.6.0 vendor: nvidia v: 535.183.01 glx-v: 1.4
direct-render: yes renderer: NVIDIA GeForce RTX 3070 Ti Laptop GPU/PCIe/SSE2
Audio:
Device-1: Intel Alder Lake PCH-P High Definition Audio vendor: Dell
driver: sof-audio-pci-intel-tgl bus-ID: 00:1f.3
Device-2: NVIDIA GA104 High Definition Audio driver: snd_hda_intel
v: kernel bus-ID: 01:00.1
API: ALSA v: k6.8.0-40-generic status: kernel-api
Server-1: PipeWire v: 1.0.5 status: active
**xrandr --prop | grep "HDMI"**
HDMI-0 disconnected (normal left inverted right x axis y axis)
ConnectorType: HDMI
supported: Unknown, VGA, DVI-D, HDMI, DP, Wireless, Native
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
supported: Unknown, VGA, DVI-D, HDMI, DP, Wireless, Native
HDMI-1-2 disconnected (normal left inverted right x axis y axis)
supported: Unknown, VGA, DVI-D, HDMI, DP, Wireless, Native
HDMI-1-3 disconnected (normal left inverted right x axis y axis)
**aplay -l**
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: sofhdadsp [sof-hda-dsp], device 0: HDA Analog () []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: sofhdadsp [sof-hda-dsp], device 3: HDMI1 ()
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: sofhdadsp [sof-hda-dsp], device 4: HDMI2 () []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: sofhdadsp [sof-hda-dsp], device 5: HDMI3 ()
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: sofhdadsp [sof-hda-dsp], device 31: HDA Analog Deep Buffer (*)
Subdevices: 1/1
Subdevice #0: subdevice #0
NVIDIA Settings
Operating System: Linux-x86_64 NVIDIA Driver Version: 535.183.01 NVML Version: 12.535.183.01
X Server Information Server Version Number: 11.0 Server Vendor Version: 1.21.1.11(12101011) NV-CONTROL Version: 1.29 Screens: 1
GPUs: NVIDIA GeForce RTX 3070 Ti Laptop GPU (GPU0) Displays: None Recovered GPU Errors: 0
Xvideo Settings Currently synced to display: Unknown Sync to this display device: Auto