USB-C is not working with external monitors

Laptops MiniBook
1

Hello everyone! I recently purchased the Chuwi Minibook X N100 and received it yesterday.
I’m attempting to connect my new laptop to my Dell monitor (Dell P3222QE) using the USB-C port,
but unfortunately, nothing is appearing on the screen. I keep receiving the message ‘No USB-C signal from your device.’

I’ve tried both USB-C ports on the Chuwi, but nothing happens.
The only functionality I get is with the mouse and keyboard connected to the Dell monitor as a hub.

Could you please advise if this is normal, or if there’s something specific I should do?
Thank you in advance!"

2

Hello,
Have you checked if the cable you are using is compatible? Is it a cable that has all lines, for Video transmission?

Not all USB-C cables are the same. Some of them, most of those provided with smartphones, etc, are only data and power.

Regards
ML

3

Have you tried another monitor or a projector? I have used the USB type C ports to connect an adapter with USB type A ports, ethernet port and HDMI output to connect via HDMI cable a projector. In this case it worked without issues.

4

Hi

I am currently able to connect my work laptop to my Dell monitor using a USB-C to USC-B connection.
This allows me to display in full 4K resolution on the Dell monitor. However, when I attempt the same setup with my Chuwi Minibook X, I encounter issues. The only successful connection involves using a hub through the USB-C port on the Chuwi and then connecting to the Dell monitor via HDMI. Unfortunately, this method limits the display resolution to 1920x1200 pixels on the monitor.

Or chuwi has no DisplayPort Alt Mode (DP Alt Mode) that allows a USB-C equipped computer to connect directly to a display or monitor?

5

The usb port closest to the back is for data and Chuwi 12 volts charging charging. Connecting my 4K screen that can deliver power over USB C as well to the other USB C port of the Minibook works fine. Both 4K resolution and battery charging. Tested with Windows 11 and Ubuntu 24.04. It could be an incompatibility issue while by using the hub you get display.

6

Hello again,
This is possible because these adapters have all the wires needed to provided data and video and convert the signal to HDMI.

From my understanding, you are trying to connect a USB-C monitor and for this, you need a cable compatible.

7

Is your USB-C port designed for video output (DisplayPort Alternate Mode or Thunderbolt 3)? Consult your device’s manual or manufacturer’s website.

8

if after all the help that these nice guys here are offering is not solved, just give me an @, so i will ask tech after holidays(we come back on 19th). But i have checked and Minibook USB C has full functions so it should work.

9

I just received a Chuwi MiniBook X with the N100 processor, and it does not connect to my Dell UltraSharp 24, U2419HC monitor(s). I have an Acer SF314-42 which connects with it/them perfectly. I’ve tried the Win11 the MiniBook X came with as well as linux (mint 22 and fedora 40), to no avail. Everything else, so far, seems to be working well.

Any ideas?

10

It’s quite a coincidence that two different Dell monitors don’t work. That could be a protocol negotiation issue.

It seems there is a firmware upgrade for your monitor. You could check the release notes to see if they mention such an issue. You may decide to update your monitor.

In addition, looking at the manual that comes with your monitor there are a number of settings related to USB c connectivity. You could try to toggle them back and forth, one by one.

Else you could try a USB c to HDMI cable. Pay attention to the desired resolution and refresh rate when purchasing such a cable. The Intel N100 can handle up to 4K @ 60 Hertz.

Yes, I know, it should all work out of the box…

Cheers, Jaap

1 Like
11

There is nothing wrong with the monitors. I’m using them now with the Acer.

As I see it, it is either the case that the MiniBook is not configured correctly in some way, or it does not support these monitors somehow, or it is defective.

12

Where did I write there is something wrong with your monitor? Don’t ask for ideas if you already made up your mind.

13

Here:

I am open to any ideas, I will look at monitor firmware, but as the monitors are working with other computers (the Acer at this moment), it seems likely they are not the problem. I’m hoping it is some issue with configuration of the Minibook X or a protocol they do not support (which might be addressed by a port converter, etc.). I’m looking for solutions other than the Minibook X being defective. It seems fine otherwise (charges from the monitor’s USB-C, sees devices plugged in to the monitor’s USB-A ports, etc.).

Update:
I just checked and the monitor says it has firmware revision M3T107, and checking with Dell, that is the current/latest for that model, Dell U2419HC.

14

Agree, while I haven’t found any means of configuring the minibook, I suggested to look at the monitor settings, as well as to use another cable.

Both ideas are about issues with possible protocol negotiation between two devices. That is not uncommon in the industry. Per company, interpretation of standards may differ.

I work with a similar monitor, but from another brand. That one works fine with both the minibook and a Lenovo laptop. Like yours, my monitor also delivers power over USB to the laptop. Finally, I tested with Windows 11, Ubuntu 22.04 and Fedora Core 40.

Maybe I’m just lucky. :wink:

Cheers, Jaap

1 Like
15

Update:

While the Minibook-X will not connect to the Dell monitor(s) directly, it will work via HDMI through a USB Type-C dock, and it will, strangely enough, connect to a single Dell monitor through USB-C through the dock as well. If the two monitors are connected via DP to the dock, the displays will mirror only (the Acer saw them as separate and could extend the desktop). The dock has a DP port, so with one monitor connecting via USB-C and the other DP, I get two monitors. But again, the USB-C does not connect directly from the Minibook-X, only through the dock…

1 Like
16

Thanks for coming back with the results. This seems to be a negotiation issue between Chuwi and Dell. Fortunately you have found a bypass.

17

I’ll look for the correct topic to post this, but I want to mention that the power supply which came with the Minibook-X is NOT USB Type-C compliant. It supplies 12V/3A, and has now sensing/negotiation for appropriate levels as required by the USB-C specification. As a result, without knowing this, I connected it to my clockworkpi uconsole, and the supply promptly fried it.

At a minimum, Chuwi should have some marking on the power supply warning against it being used for anything other than directly plugging in to the Minibook-X. I’m out a couple hundred dollars because of this.

18

Add me to the list of people with a MiniBook X that will not work with a Dell monitor. In this case a Del P2721Q. Power delivery and the monitor built in USB hub work, but the video will not work over the USB-C ports on the MiniBook.

19

IF some of you make me a video that Tech can see clearly what is the problem, because with all the different USB, Hub, DPconnections will be hard to explain them

20

I did some debugging here to try and help folks who are having issues with Dell montiors on the CHUWI MiniBook X N150.

Below is the output of dmesg from the following Linux kernel:
$ uname -a
Linux chuwi 6.16.6-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 10 Sep 2025 00:38:07 +0000 x86_64 GNU/Linux

I ran dmesg -w, then plugged the laptop into a Dell Ultrasharp U3223QE monitor (at timestamp 12888… then unplugged it (12892) and plugged it into a Lenovo t24t-20 monitor (12933). The dell monitor did not display anything but all the peripherals worked, the Lenovo monitor worked with both display and all peripherals.

The Dell monitor shows up as a USB hub (Microchip USB4206 / USB4216). I get keyboard, mouse, Ethernet — all via USB. There are no messages about DP Alt Mode or UCSI negotiation. I assume this means Linux is not even being told that the USB-C port is capable of video output in this connection. I also notice that /sys/class/typec is missing, so there is no OS-Level TCPM (MCU-based Type-C Port Manager). So, the kernel isn’t managing the USB-C controller via TCPM/UCSI. I’m guessing the firmware hides the controller and just gives Linux a pre-configured USB hub, and that the BIOS/firmware to do the alt-mode negotiation — Linux only sees the result.

When I plug the lenovo monitor in, it triggers the display (from dmesg):
usb 1-6.3: Product: BillBoard Device

There’s also some driver activity going on:
[12934.747450] i915 0000:00:02.0: [drm] ERROR DSI link not ready

I think this is at least the GPU driver trying to bring up a display pipe, and means my Lenovo monitor is engaging with the GPU path at some level — even if it logs an error.

My guess here is that the port will only negotiate DP Alt Mode with simpler sinks. Many Dell monitors implement Multi Stream Transport (MST), USB hub, and power delivery all in the same controller. They sometimes advertise multiple alt modes or “Thunderbolt compatible” modes. I assume because the Lenovo monitor works because it’s a simple, standard DP 1.4 alt-mode sink.

Hope this helps. Let me know if you have any questions.

——-dmesg -w follows——

(dell U3223QE plugged in)

[12880.142788] usb 1-6: new high-speed USB device number 44 using xhci_hcd
[12880.275974] usb 1-6: New USB device found, idVendor=0424, idProduct=4206, bcdDevice= 6.25
[12880.275981] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12880.275983] usb 1-6: Product: USB4206 Smart Hub
[12880.275984] usb 1-6: Manufacturer: Microchip
[12880.276989] hub 1-6:1.0: USB hub found
[12880.277034] hub 1-6:1.0: 5 ports detected
[12880.557793] usb 1-6.4: new high-speed USB device number 45 using xhci_hcd
[12880.648977] usb 1-6.4: New USB device found, idVendor=0424, idProduct=4216, bcdDevice= 1.91
[12880.648984] usb 1-6.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12880.648986] usb 1-6.4: Product: USB4216 Smart Hub
[12880.648988] usb 1-6.4: Manufacturer: Microchip
[12880.650014] hub 1-6.4:1.0: USB hub found
[12880.650060] hub 1-6.4:1.0: 5 ports detected
[12880.725792] usb 1-6.5: new high-speed USB device number 46 using xhci_hcd
[12880.810644] usb 1-6.5: New USB device found, idVendor=0424, idProduct=7260, bcdDevice= 6.25
[12880.810650] usb 1-6.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12880.810651] usb 1-6.5: Product: USB2 Controller Hub
[12880.810653] usb 1-6.5: Manufacturer: Microchip Tech
[12880.812490] hid-generic 0003:0424:7260.0020: hiddev96,hidraw1: USB HID v1.10 Device [Microchip Tech USB2 Controller Hub] on usb-0000:00:14.0-6.5/input1
[12881.374790] usb 1-6.4.2: new full-speed USB device number 47 using xhci_hcd
[12881.465425] usb 1-6.4.2: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=24.11
[12881.465431] usb 1-6.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12881.465433] usb 1-6.4.2: Product: USB Receiver
[12881.465435] usb 1-6.4.2: Manufacturer: Logitech
[12881.661787] usb 1-6.4.3: new high-speed USB device number 48 using xhci_hcd
[12881.748288] usb 1-6.4.3: New USB device found, idVendor=0bda, idProduct=8153, bcdDevice=33.10
[12881.748295] usb 1-6.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=6
[12881.748296] usb 1-6.4.3: Product: USB 10/100/1000 LAN
[12881.748298] usb 1-6.4.3: Manufacturer: Realtek
[12881.748299] usb 1-6.4.3: SerialNumber: 0133000001
[12881.825057] r8152-cfgselector 1-6.4.3: reset high-speed USB device number 48 using xhci_hcd
[12881.983093] r8152 1-6.4.3:1.0 eth0: v1.12.13
[12882.056804] usb 1-6.4.5: new high-speed USB device number 49 using xhci_hcd
[12882.157288] usb 1-6.4.5: New USB device found, idVendor=0424, idProduct=7240, bcdDevice= 2.07
[12882.157308] usb 1-6.4.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12882.157315] usb 1-6.4.5: Product: USB2 Controller Hub
[12882.157321] usb 1-6.4.5: Manufacturer: Microchip Tech
[12882.483054] usb 1-6.1: new high-speed USB device number 50 using xhci_hcd
[12882.567682] usb 1-6.1: New USB device found, idVendor=1949, idProduct=9981, bcdDevice= 2.23
[12882.567694] usb 1-6.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12883.073916] usb 1-6.1: USB disconnect, device number 50
[12885.043792] usb 1-6.1: new high-speed USB device number 51 using xhci_hcd
[12885.130450] usb 1-6.1: New USB device found, idVendor=1949, idProduct=9981, bcdDevice= 2.23
[12885.130457] usb 1-6.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12892.743023] usb 1-6: USB disconnect, device number 44… (more disconnections as the monitor is unplugged)

(lenovo monitor plugged in)

[12933.845984] usb 1-6: new high-speed USB device number 52 using xhci_hcd
[12933.988236] usb 1-6: New USB device found, idVendor=0bda, idProduct=5412, bcdDevice= 1.41
[12933.988247] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12933.988250] usb 1-6: Product: USB2.1 Hub
[12933.988253] usb 1-6: Manufacturer: Generic
[12933.991411] hub 1-6:1.0: USB hub found
[12933.993091] hub 1-6:1.0: 4 ports detected
[12934.092849] usb 2-1: new SuperSpeed USB device number 2 using xhci_hcd
[12934.123246] usb 2-1: New USB device found, idVendor=0bda, idProduct=0412, bcdDevice= 1.41
[12934.123265] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12934.123271] usb 2-1: Product: USB3.2 Hub
[12934.123276] usb 2-1: Manufacturer: Generic
[12934.128496] hub 2-1:1.0: USB hub found
[12934.130487] hub 2-1:1.0: 1 port detected
[12934.278897] usb 1-6.1: new high-speed USB device number 53 using xhci_hcd
[12934.384570] usb 1-6.1: New USB device found, idVendor=0bda, idProduct=5411, bcdDevice= 1.40
[12934.384589] usb 1-6.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12934.384596] usb 1-6.1: Product: USB2.1 Hub
[12934.384601] usb 1-6.1: Manufacturer: Generic
[12934.389231] hub 1-6.1:1.0: USB hub found
[12934.390775] hub 1-6.1:1.0: 5 ports detected
[12934.442671] usb 2-1.1: new SuperSpeed USB device number 3 using xhci_hcd
[12934.470170] usb 2-1.1: New USB device found, idVendor=0bda, idProduct=0411, bcdDevice= 1.40
[12934.470185] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12934.470190] usb 2-1.1: Product: USB3.2 Hub
[12934.470193] usb 2-1.1: Manufacturer: Generic
[12934.477107] hub 2-1.1:1.0: USB hub found
[12934.479386] hub 2-1.1:1.0: 4 ports detected
[12934.535882] usb 1-6.2: new full-speed USB device number 54 using xhci_hcd
[12934.624403] usb 1-6.2: New USB device found, idVendor=1fd2, idProduct=8102, bcdDevice= 1.00
[12934.624422] usb 1-6.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12934.624428] usb 1-6.2: Product: LGDisplay Incell Touch
[12934.624434] usb 1-6.2: Manufacturer: Melfas
[12934.637038] input: Melfas LGDisplay Incell Touch as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2:1.0/0003:1FD2:8102.0026/input/input48
[12934.637609] hid-multitouch 0003:1FD2:8102.0026: input,hidraw1: USB HID v1.11 Device [Melfas LGDisplay Incell Touch] on usb-0000:00:14.0-6.2/input0
[12934.638670] hid-generic 0003:1FD2:8102.0027: hiddev96,hidraw2: USB HID v1.11 Device [Melfas LGDisplay Incell Touch] on usb-0000:00:14.0-6.2/input1
[12934.696821] usb 1-6.1.5: new high-speed USB device number 55 using xhci_hcd
[12934.747450] i915 0000:00:02.0: [drm] ERROR DSI link not ready
[12934.802122] usb 1-6.1.5: New USB device found, idVendor=0bda, idProduct=1100, bcdDevice= 1.01
[12934.802133] usb 1-6.1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12934.802136] usb 1-6.1.5: Product: HID Device
[12934.802139] usb 1-6.1.5: Manufacturer: Realtek
[12934.808719] hid-generic 0003:0BDA:1100.0028: hiddev97,hidraw3: USB HID v1.11 Device [Realtek HID Device] on usb-0000:00:14.0-6.1.5/input0
[12934.866894] usb 1-6.3: new high-speed USB device number 56 using xhci_hcd
[12934.977280] usb 1-6.3: New USB device found, idVendor=0bda, idProduct=5418, bcdDevice= 1.01
[12934.977294] usb 1-6.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12934.977298] usb 1-6.3: Product: BillBoard Device
[12934.977301] usb 1-6.3: Manufacturer: Realtek
[12935.051805] usb 1-6.4: new high-speed USB device number 57 using xhci_hcd
[12935.154001] usb 1-6.4: New USB device found, idVendor=0bda, idProduct=1100, bcdDevice= 1.01
[12935.154012] usb 1-6.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[12935.154015] usb 1-6.4: Product: HID Device
[12935.154018] usb 1-6.4: Manufacturer: Realtek
[12935.159167] hid-generic 0003:0BDA:1100.0029: hiddev98,hidraw4: USB HID v1.11 Device [Realtek HID Device] on usb-0000:00:14.0-6.4/input0
[12946.399391] usb 1-6: USB disconnect, device number 52
[12946.399476] usb 1-6.1: USB disconnect, device number 53
[12946.399484] usb 1-6.1.5: USB disconnect, device number 55
[12946.402522] usb 1-6.2: USB disconnect, device number 54
[12946.422416] usb 1-6.3: USB disconnect, device number 56
[12946.422824] usb 1-6.4: USB disconnect, device number 57
[12946.563909] usb 2-1: USB disconnect, device number 2
[12946.563919] usb 2-1.1: USB disconnect, device number 3
[12947.339495] i915 0000:00:02.0: [drm] ERROR DSI link not ready