I am running into an issue where my second monitor, attached to HDMI, is not being detected by Ubuntu. The primary display plugged into the DP is working great. If I boot with the HDMI cable unplugged and then plug it in once booted the secondary display tends to flicker on/off. If I boot with the HDMI cable plugged in the display stays in standby mode. This makes me believe there is a signal being sent from the HDMI port on the motherboard. I have also tried setting the BIOS to use the IGD and disabling secure boot. My motherboard does support dual displays through the IGD DP and HDMI ports.
Any thoughts on how I can correct this issue? I have tried searching here but have not found a solution.
Thanks!
> lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.10
Release: 22.10
Codename: kinetic
> uname -r
5.19.0-29-generic
> lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Raptor Lake-S UHD Graphics (rev 04)
> sudo lshw -C display
*-display
description: VGA compatible controller
product: Raptor Lake-S UHD Graphics
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 mode=3840x2160 resolution=3840,2160 visual=truecolor xres=3840 yres=2160
resources: iomemory:600-5ff iomemory:400-3ff irq:174 memory:6000000000-6000ffffff memory:4000000000-400fffffff ioport:4000(size=64) memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff
> xrandr
Screen 0: minimum 16 x 16, current 3840 x 2160, maximum 32767 x 32767
XWAYLAND0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 700mm x 400mm
3840x2160 59.98*+
2048x1536 59.95
1920x1440 59.90
1600x1200 59.87
1440x1080 59.99
1400x1050 59.98
1280x1024 59.89
1280x960 59.94
1152x864 59.96
1024x768 59.92
800x600 59.86
640x480 59.38
320x240 59.52
2560x1600 59.94
1920x1200 59.88
1680x1050 59.95
1440x900 59.89
1280x800 59.81
720x480 59.71
640x400 59.95
320x200 58.96
3200x1800 59.96
2880x1620 59.96
2560x1440 59.96
2048x1152 59.90
1920x1080 59.96
1600x900 59.95
1368x768 59.88
1280x720 59.86
1024x576 59.90
864x486 59.92
720x400 59.55
640x350 59.77
