HMDI TV monitor no longer found - LMDE 6

[majpooper]

I have dual monitors and a Panasonic flat screen configured on my PC running LMDE 6.
For a while now I have not been able to access the TV screen. I do not use often so have been putting off delving into the problem so I cannot say exactly when this stopped working but several months. I just assumed it was a missing driver as a result of a kernel update.

I tried loading some AMD GPU radeon drivers following the HOW TO below but that did not work
viewtopic.php?t=415256

My system specs:

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majpooper@tacoma:~$ inxi -Fxxxz
System:
  Kernel: 6.1.0-17-amd64 arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    Desktop: Cinnamon v: 6.0.4 tk: GTK v: 3.24.38 wm: muffin vt: 7 dm: LightDM
    v: 1.26.0 Distro: LMDE 6 Faye base: Debian 12.1 bookworm
Machine:
  Type: Desktop System: Gigabyte product: N/A v: N/A
    serial: <superuser required> Chassis: type: 3 serial: <superuser required>
  Mobo: Gigabyte model: 970A-DS3P serial: <superuser required>
    BIOS: American Megatrends v: FC date: 06/01/2015
CPU:
  Info: 8-core model: AMD FX-8320E bits: 64 type: MT MCP smt: enabled
    arch: Piledriver rev: 0 cache: L1: 384 KiB L2: 8 MiB L3: 8 MiB
  Speed (MHz): avg: 1403 high: 1409 min/max: 1400/3200 boost: enabled cores:
    1: 1406 2: 1406 3: 1400 4: 1406 5: 1400 6: 1400 7: 1409 8: 1400
    bogomips: 51439
  Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Turks GL [FirePro V4900] vendor: Hewlett-Packard
    driver: radeon v: kernel arch: TeraScale-2 pcie: speed: 5 GT/s lanes: 16
    ports: active: DP-1,DVI-I-1 empty: DP-2 bus-ID: 01:00.0 chip-ID: 1002:6749
    class-ID: 0300 temp: 56.5 C
  Device-2: Microdia Webcam Vitade AF type: USB
    driver: snd-usb-audio,uvcvideo bus-ID: 3-1:2 chip-ID: 0c45:6366
    class-ID: 0102 serial: <filter>
  Display: x11 server: X.Org v: 1.21.1.7 with: Xwayland v: 22.1.9 driver: X:
    loaded: radeon unloaded: fbdev,modesetting,vesa dri: r600 gpu: radeon
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1016x285mm (40.00x11.22")
    s-diag: 1055mm (41.54")
  Monitor-1: DVI-I-1 mapped: DVI-0 pos: left model: Acer K242HQL
    serial: <filter> res: 1920x1080 hz: 60 dpi: 96
    size: 509x286mm (20.04x11.26") diag: 595mm (23.4") modes: max: 1920x1080
    min: 720x400
  Monitor-2: DP-1 mapped: DisplayPort-0 pos: primary,right
    model: Acer K242HQL serial: <filter> res: 1920x1080 hz: 60 dpi: 94
    size: 521x293mm (20.51x11.54") diag: 598mm (23.5") modes: max: 1920x1080
    min: 720x400
  API: OpenGL v: 4.5 Mesa 22.3.6 renderer: AMD TURKS (DRM 2.50.0 /
    6.1.0-17-amd64 LLVM 15.0.6) direct-render: Yes
Audio:
  Device-1: AMD SBx00 Azalia vendor: Gigabyte driver: snd_hda_intel v: kernel
    bus-ID: 3-1:2 chip-ID: 0c45:6366 bus-ID: 00:14.2 chip-ID: 1002:4383
    class-ID: 0102 class-ID: 0403 serial: <filter>
  Device-2: AMD Turks HDMI Audio [Radeon HD 6500/6600 / 6700M Series]
    vendor: Hewlett-Packard driver: snd_hda_intel v: kernel pcie: speed: 5 GT/s
    lanes: 16 bus-ID: 01:00.1 chip-ID: 1002:aa90 class-ID: 0403
  Device-3: Microdia Webcam Vitade AF type: USB
    driver: snd-usb-audio,uvcvideo
  API: ALSA v: k6.1.0-17-amd64 status: kernel-api
  Server-1: PipeWire v: 0.3.65 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Gigabyte driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1
    port: d000 bus-ID: 03:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  Device-2: Intel 82571EB/82571GB Gigabit Ethernet D0/D1 driver: e1000e
    v: kernel pcie: speed: 2.5 GT/s lanes: 4 port: c020 bus-ID: 05:00.0
    chip-ID: 8086:105e class-ID: 0200
  IF: enp5s0f0 state: down mac: <filter>
  Device-3: Intel 82571EB/82571GB Gigabit Ethernet D0/D1 driver: e1000e
    v: kernel pcie: speed: 2.5 GT/s lanes: 4 port: c000 bus-ID: 05:00.1
    chip-ID: 8086:105e class-ID: 0200
  IF: enp5s0f1 state: down mac: <filter>
  IF-ID-1: virbr0 state: down mac: <filter>
Drives:
  Local Storage: total: 1.4 TiB used: 174.64 GiB (12.2%)
  ID-1: /dev/sda vendor: Crucial model: CT480BX500SSD1 size: 447.13 GiB
    speed: 6.0 Gb/s type: SSD serial: <filter> rev: 054 scheme: MBR
  ID-2: /dev/sdb type: USB vendor: Lexar model: USB Flash Drive
    size: 57.62 GiB type: SSD serial: <filter> rev: 1100 scheme: MBR
  ID-3: /dev/sdc type: USB vendor: Western Digital model: WD My Book 1130
    size: 931.48 GiB type: N/A serial: <filter> rev: 1016 scheme: MBR
Partition:
  ID-1: / size: 430.97 GiB used: 40.32 GiB (9.4%) fs: ext4 dev: /dev/sda2
Swap:
  ID-1: swap-1 type: partition size: 8.2 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/sda1
Sensors:
  System Temperatures: cpu: 27.1 C mobo: N/A gpu: radeon temp: 57.0 C
  Fan Speeds (RPM): N/A
Info:
  Processes: 255 Uptime: 11m wakeups: 0 Memory: 31.31 GiB
  used: 2.34 GiB (7.5%) Init: systemd v: 252 target: graphical (5)
  default: graphical Compilers: gcc: 12.2.0 alt: 12 Packages: pm: dpkg
  pkgs: 2344 Shell: Bash v: 5.2.15 running-in: gnome-terminal inxi: 3.3.26

[SMG]

I tried loading some AMD GPU radeon drivers following the HOW TO below but that did not work
viewtopic.php?t=415256

That tutorial only applied to hardware than can use the amdgpu drivers. Your Turks GPU hardware is a generation too old to be able to use amdgpu. The radeon driver is your only choice.

I don't see an HDMI option in your output.

Graphics:
Device-1: AMD Turks GL [FirePro V4900] vendor: Hewlett-Packard
driver: radeon v: kernel arch: TeraScale-2 pcie: speed: 5 GT/s lanes: 16
ports: active: DP-1,DVI-I-1 empty: DP-2 bus-ID: 01:00.0 chip-ID: 1002:6749
class-ID: 0300 temp: 56.5 C

What is the output of

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ls /sys/class/drm/

[majpooper]

Here you go:

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majpooper@tacoma:~$ ls /sys/class/drm/
card0  card0-DP-1  card0-DP-2  card0-DVI-I-1  renderD128  version

I looked at the back - and the HDMI cable is going into and adapter which I can't remove which seems strange.
So now I wonder if the HDMI is being converted to something else or if it's a bad cable or adapter.
Problem is I don't know when it went bad because I don't use it very often.

[SMG]

Here you go:

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majpooper@tacoma:~$ ls /sys/class/drm/
card0  card0-DP-1  card0-DP-2  card0-DVI-I-1  renderD128  version

There's no HDMI port showing, but if the HDMI cable is going into an adapter that is attached to either a DP port or a DVI-I port then HDMI would not necessarily show in this output. The original port of the GPU could show.

I looked at the back - and the HDMI cable is going into and adapter which I can't remove which seems strange.

That does seem strange. I have no guesses what it might be.

[majpooper]

THX - I will have figure out exactly that adapter is doing and go from there. To be continued - Thanks again

[RamBurner]

Here you go:

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majpooper@tacoma:~$ ls /sys/class/drm/
card0  card0-DP-1  card0-DP-2  card0-DVI-I-1  renderD128  version

I looked at the back - and the HDMI cable is going into and adapter which I can't remove which seems strange.
So now I wonder if the HDMI is being converted to something else or if it's a bad cable or adapter.
Problem is I don't know when it went bad because I don't use it very often.

Does the connector end have a lock on it that you have to press to get it to release from the adapter? Many Display Port to HDMI adapter cables have that. It shows a DP-1 is active so it's using the display port. I have one of those that has the latch lock like I described. Is the 24" monitor using a Display Port because it shows the DVI as inactive and it shows a second Display port also. Your card has two Display Ports and one DVI. Have you tried another HDMI cable? Or maybe the adapter has failed