Unable to detect monitor

I’ve just bought a new smart tv and connected to my mediacenter, powered by manjaro. This was working with my old tv but now the new TV TCL is not able to detect any signal.

Any idea what to test?

System:    Kernel: 5.11.22-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 Console: pty pts/0 DM: GDM 40.1
           Distro: Manjaro Linux base: Arch Linux
Machine:   Type: Desktop System: Gigabyte product: A320M-S2H v: N/A serial: <filter>
           Mobo: Gigabyte model: A320M-S2H-CF v: x.x serial: <filter> UEFI-[Legacy]: American Megatrends v: F23
           date: 08/08/2018
Battery:   Device-1: hidpp_battery_0 model: Logitech Wireless Touch Keyboard K400 Plus serial: <filter>
           charge: 55% (should be ignored) rechargeable: yes status: Discharging
CPU:       Info: Quad Core model: AMD Ryzen 3 2200G with Radeon Vega Graphics bits: 64 type: MCP arch: Zen rev: 0 cache:
           L2: 2 MiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 27958
           Speed: 1418 MHz min/max: 1600/3500 MHz boost: enabled Core speeds (MHz): 1: 1418 2: 1421 3: 1422 4: 1421
Graphics:  Device-1: AMD Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] vendor: Gigabyte driver: amdgpu
           v: kernel bus-ID: 07:00.0 chip-ID: 1002:15dd class-ID: 0300
           Display: server: X.org 1.20.13 compositor: gnome-shell driver: loaded: amdgpu,ati unloaded: modesetting
           alternate: fbdev,vesa tty: 168x37
           Message: Advanced graphics data unavailable in console. Try -G --display
Audio:     Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel v: kernel
           bus-ID: 07:00.1 chip-ID: 1002:15de class-ID: 0403
           Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: Gigabyte driver: snd_hda_intel v: kernel
           bus-ID: 07:00.6 chip-ID: 1022:15e3 class-ID: 0403
           Sound Server-1: ALSA v: k5.11.22-2-MANJARO running: yes
           Sound Server-2: JACK v: 1.9.19 running: no
           Sound Server-3: PulseAudio v: 15.0 running: yes
           Sound Server-4: PipeWire v: 0.3.38 running: no
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Gigabyte driver: r8169 v: kernel
           port: f000 bus-ID: 06:00.0 chip-ID: 10ec:8168 class-ID: 0200
           IF: enp6s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
           IF-ID-1: br-0871cb99936b state: down mac: <filter>
           IF-ID-2: docker0 state: down mac: <filter>
Drives:    Local Storage: total: 3.86 TiB used: 634.23 GiB (16.1%)
           ID-1: /dev/sda vendor: Kingston model: SA400S37240G size: 223.57 GiB speed: 6.0 Gb/s type: SSD serial: <filter>
           rev: B1E1 scheme: MBR
           ID-2: /dev/sdb vendor: Seagate model: ST4000DM004-2CV104 size: 3.64 TiB speed: 6.0 Gb/s type: HDD rpm: 5425
           serial: <filter> rev: 0001 scheme: GPT
Partition: ID-1: / size: 47.81 GiB used: 27.99 GiB (58.5%) fs: ext4 dev: /dev/sda2
           ID-2: /boot/efi size: 511 MiB used: 292 KiB (0.1%) fs: vfat dev: /dev/sda1
           ID-3: /home size: 81.61 GiB used: 11.88 GiB (14.6%) fs: ext4 dev: /dev/sda6
Swap:      Alert: No swap data was found.
Sensors:   System Temperatures: cpu: 29.6 C mobo: N/A gpu: amdgpu temp: 29.0 C
           Fan Speeds (RPM): N/A
Info:      Processes: 227 Uptime: 50m wakeups: 15 Memory: 6.8 GiB used: 982.8 MiB (14.1%) Init: systemd v: 249 Compilers:
           gcc: N/A Packages: pacman: 1440 Shell: Bash v: 5.1.8 running-in: pty pts/0 (SSH) inxi: 3.3.08

If the HDMI/Display port is working with other devices, I think its a cable issue. If you have any spare cables around, try using them.

Found another person having trouble with a TCL TV on linux mint forums. You can check if the solution here works for you.