4th Monitor keeps disabling itself using "Baseus Portal Joy Series 13-Port Type C Hub"

[shaunroselt]

Your system information

fastfetch:

kinfo:

nouveau: driver missing
glx: failed to create dri3 screen
failed to load driver: nouveau
Operating System: SteamOS 3.8 Build: 20250904.1000
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Kernel Version: 6.15.11-valve1-1-neptune-615-gf96afaca3ab2 (64-bit)
Graphics Platform: X11
Partition: B
Processors: 16 × AMD Ryzen 7 8845HS w/ Radeon 780M Graphics
Memory: 64 GiB of RAM (62.1 GiB usable)
Graphics Processor 1: AMD Radeon Graphics
Graphics Processor 2: llvmpipe

Steam System Information

Computer Information:
Manufacturer: Standard
Model: Standard
Form Factor: Laptop
No Touch Input Detected
Processor Information:
CPU Vendor: AuthenticAMD
CPU Brand: AMD Ryzen 7 8845HS w/ Radeon 780M Graphics
CPU Family: 0x19
CPU Model: 0x75
CPU Stepping: 0x2
CPU Type: 0x0
Speed: 5137 MHz
16 logical processors
8 physical processors
Hyper-threading: Supported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Supported
SSE41: Supported
SSE42: Supported
AES: Supported
AVX: Supported
AVX2: Supported
AVX512F: Supported
AVX512PF: Unsupported
AVX512ER: Unsupported
AVX512CD: Supported
AVX512VNNI: Supported
SHA: Supported
CMPXCHG16B: Supported
LAHF/SAHF: Supported
PrefetchW: Unsupported
BMI1: Supported
BMI2: Supported
F16C: Supported
FMA: Supported
Operating System Version:
"SteamOS Holo" (64 bit)
Kernel Name: Linux
Kernel Version: 6.15.11-valve1-1-neptune-615-gf96afaca3ab2
X Server Vendor: The X.Org Foundation
X Server Release: 12101018
X Window Manager: KWin
Steam Runtime Version: steam-runtime_1.0.20250616.139563
Client Information:
Version: 1757031224
Browser GPU Acceleration Status: Enabled
Browser Canvas: Enabled
Browser Canvas out-of-process rasterization: Enabled
Browser Direct Rendering Display Compositor: Disabled
Browser Compositing: Enabled
Browser Multiple Raster Threads: Enabled
Browser OpenGL: Enabled
Browser Rasterization: Enabled
Browser Raw Draw: Disabled
Browser Skia Graphite: Disabled
Browser Video Decode: Enabled
Browser Video Encode: Disabled
Browser Vulkan: Disabled
Browser WebGL: Enabled
Browser WebGL2: Enabled
Browser WebGPU: Disabled
Browser WebNN: Disabled
Video Card:
Driver: AMD AMD Radeon Graphics (radeonsi, phoenix, LLVM 20.1.8, DRM 3.63, 6.15.11-valve1-1-neptune-615-gf96afaca3ab2)
Driver Version: 4.6 (Compatibility Profile) Mesa 25.2.0 (git-dce58d5bd5)
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 60 Hz
VendorID: 0x1002
DeviceID: 0x1900
Revision Not Detected
Number of Monitors: 4
Number of Logical Video Cards: 2
Primary Display Resolution: 1920 x 1080
Desktop Resolution: 8320 x 1600
Primary Display Size: 23.54" x 13.23" (26.97" diag), 59.8cm x 33.6cm (68.5cm diag)
Primary VRAM: 512 MB
Sound card:
Audio device: USB Mixer
Memory:
RAM: 63564 Mb
VR Hardware:
VR Headset: None detected
Miscellaneous:
UI Language: English
LANG: en_GB.UTF-8
Total Hard Disk Space Available: 1936323 MB
Largest Free Hard Disk Block: 1197375 MB
Storage:
Number of SSDs: 1
SSD sizes: 2048G
Number of HDDs: 0
Number of removable drives: 0

Please describe your issue in as much detail as possible:

I have a "Baseus Portal Joy Series 13-Port Type C Hub" with 4 screens plugged into it.

All 4 of the screens are shown in the System Settings:

From the above screenshot, the 4 screens are:

• Dell Inc. DELL SE2419H
• Invalid Vendor Codename - RTK
• Dell Inc. SE2717H/HX K9V8V77201AB
• Dell Inc. SE2717H/HX K9V8V7C40LRS

It's the "Dell Inc. DELL SE2419H" one that is currently selected that keeps disabling itself. I would enable it like so:

I press Apply, but then nothing happens. It shows it's enabled though, and when I close System Settings and open it again, then the screen is disabled again.

So it seems like either it's not enabling it even though it shows it's enabled, or it disables itself immediately after enabling it.

I don't know. Either way, I can't get the screen to be enabled and working.

[Pointedstick]

For the record, this is being tracked upstream at https://bugs.kde.org/show_bug.cgi?id=509148.