Drivers & Software

[Langly]

Hi, I have a completely new System here where I have trouble with the second monitor.

Specs:

Windows 10 / Linux Mint

ASRock B650 PG Lightning
GPU: 7900XT Sapphire
CPU: 7800X3D
G.Skill 4x16gb DDR5-6000 CL36

It is a completely new install with the current drivers for the BIOS and GPU

Now the monitors are old (24EN33 from LG) and only have DVI-D connections and are connected via a DP-DVI-D adapter.

Any combination of cables, monitor and adapter work on one DP connection one the GPU but none one the other.

The monitor on the non working port is working in the bios if it is the only one connected as wells as the start up screen at what appears the normal resolution (HD) in both OS.
On Linux after the boot up the second Monitor is found but only as a unknown Display and the resolution is limited to 640x480.
On Windows it is not detected at all.

Seeing that the DP connector works at the Startup makes me think it is a driver issue but I can't be sure.

Any help would be appreciated.

[bobalazs]

did you try Display Driver Uninstaller in safe mode yet? Remove driver and install an older version?

[Langly]

Took me a while to find the old drivers on the website but I tried out a few:

Adrenalin: 23.4.1
GPU Driver: 22.40.43.07-230326a-390319C-AMD-Software-Adrenalin-Edition

Adrenalin: 23.3.2
GPU Driver: 22.40.43.01-230315a-389794C-AMD-Software-Adrenalin-Edition

Adrenalin: 23.1.1
GPU Driver: 22.40.00.62-230106a-387257C-AMD-Software-Adrenalin-Edition

Now I am back to the most recent

Adrenalin: 23.4.3
GPU Driver: 22.40.51.05-230420a-391252C-AMD-Software-Adrenalin-Edition

Now there was one interesting observation doing this. If I remove the drivers using DDU and only plug one monitor into the DP that did not work Windows will recognize the monitor correctly.
Though it did not detect me plugging in the second after that. So only the one plugged in during boot was detected.

If both were plugged in during driver installation the monitor on the "left" DP was detected while the other one was disconnected and couldn't be found again.

Either way, after the installation I was back to the previous behaviour on all versions.

So yeah, I'm pretty sure it is a driver problem by now. The GPU is new and I guess plugging in such old monitors on this GPU isn't the average use case. Still it should work ...

[Langly]

I took a closer look at the Linux side. Unfortunately I couldn't get it to work any better that it already was.
I put some system infos here but they look all good to me.
I cut off the inxi output but put a few lines at the end that show the display output when I switch the ports the monitors are connected to.
Would really appreaciate if somebody can tell me if they have a similiar setup and whether or not it works.

xrandr
Screen 0: minimum 320 x 200, current 2560 x 1080, maximum 16384 x 16384
DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+
1680x1050 59.88
1400x1050 59.95
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.90
1280x800 59.91
1152x864 75.00
1280x720 60.00
1024x768 75.03 60.00
832x624 74.55
800x600 75.00 60.32 56.25
640x480 75.00 59.94
720x400 70.08
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 connected 640x480+1920+0 (normal left inverted right x axis y axis) 0mm x 0mm
640x480 59.94*
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-1-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-3 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-4 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-5 disconnected (normal left inverted right x axis y axis)

inxi -Fxxxrz
System:
Kernel: 5.15.0-71-generic x86_64 bits: 64 compiler: gcc v: 11.3.0
Desktop: Cinnamon 5.6.8 tk: GTK 3.24.33 wm: muffin vt: 7 dm: LightDM 1.30.0
Distro: Linux Mint 21.1 Vera base: Ubuntu 22.04 jammy
Machine:
Type: Desktop Mobo: ASRock model: B650 PG Lightning
serial: <superuser required> UEFI: American Megatrends LLC. v: 1.21
date: 04/26/2023
CPU:
Info: 8-core model: AMD Ryzen 7 7800X3D bits: 64 type: MT MCP smt: enabled
arch: Zen 3 rev: 2 cache: L1: 512 KiB L2: 8 MiB L3: 96 MiB
Speed (MHz): avg: 2936 high: 3595 min/max: 3000/4200 boost: enabled
cores: 1: 2871 2: 2854 3: 2872 4: 2874 5: 3595 6: 2873 7: 2874 8: 2874
9: 2875 10: 2873 11: 2860 12: 2955 13: 3123 14: 2874 15: 2872 16: 2872
bogomips: 134149
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
Device-1: AMD driver: amdgpu v: 5.18.13 pcie: speed: 16 GT/s lanes: 16
ports: active: DP-1,DP-3 empty: DP-2,HDMI-A-1 bus-ID: 03:00.0
chip-ID: 1002:744c class-ID: 0300
Device-2: AMD driver: amdgpu v: 5.18.13 pcie: speed: 16 GT/s lanes: 16
ports: active: none empty: DP-4, DP-5, DP-6, HDMI-A-2 bus-ID: 12:00.0
chip-ID: 1002:164e class-ID: 0300
Display: x11 server: X.Org v: 1.21.1.4 driver: X: loaded: amdgpu,ati
unloaded: fbdev,modesetting,radeon,vesa gpu: amdgpu display-ID: :0
screens: 1
Screen-1: 0 s-res: 2560x1080 s-dpi: 96 s-size: 677x286mm (26.7x11.3")
s-diag: 735mm (28.9")
Monitor-1: DisplayPort-0 mapped: DP-1 pos: primary,left
model: LG (GoldStar) 24EN33 serial: <filter> res: 1920x1080 hz: 60 dpi: 94
size: 521x293mm (20.5x11.5") diag: 609mm (24") modes: max: 1920x1080
min: 720x400
Monitor-2: DisplayPort-2 mapped: DP-3 pos: right res: 640x480 hz: 60
size: N/A modes: 640x480
OpenGL:
renderer: Radeon RX 7900 XT (gfx1100 LLVM 15.0.3 DRM 3.48 5.15.0-71-generic)
v: 4.6 Mesa 22.3.0-devel direct render: Yes

Monitor after switching the ports:
Monitor-1: DisplayPort-0 mapped: DP-1 pos: primary,left
model: LG (GoldStar) 24EN33 serial: <filter> res: 1920x1080 hz: 60 dpi: 94
size: 521x293mm (20.5x11.5") diag: 609mm (24") modes: max: 1920x1080
min: 720x400
Monitor-2: DisplayPort-2 mapped: DP-3 pos: right res: 640x480 hz: 60
size: N/A modes: 640x480

[Langly · Accepted solution]

I doubt anyone really cares but AMD support basically refused any help.
I returned the Card, thankfully we have rather strong customer protection here.

All in all a disappointing experience and while I did plan to buy new Displays I can't let the return window lapse in the hope it will work then.
Doubly so when I see that the Support is wholly uninterested in helping but rather blame it on anything else.