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The USB-A and USB-B connection types are what most users are accustomed to. However, these days, there are more things you can achieve with the new USB-C type of connection. With this option, users can charge their computer. What’s more, they can also connect their PC to other USB-C type devices, including media players, smartphones, docking stations, and display adapters, among others.

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However, we are aware that a good percentage of users are having troubles with their USB-C connection. In most cases, the problems are caused by problems with the hardware or software. Don’t worry because you can easily fix USB-C issues in a Windows 10 computer. After all. You will get notifications which you can use to determine how to resolve the problem.

What is a USB-C connector?

Developed by the USB Implementers Forum, the USB-C connection type is a tool for transmitting both power and data. It is worth noting that this was designed, certified, and released as an industry-standard connector by the members of the organization. Over 700 companies are part of the USB Implementers Forum, including Apple, Microsoft, Dell, HP, Intel, and Samsung. This is also the reason why many computer manufacturers readily accepted USB-C technology.

Is it similar to a micro USB connector?

At first glance, the USB-C connector looks a lot like a micro USB connector. However, the former has a distinct oval shape. Moreover, it is a little bit thicker to accommodate its best feature—like MagSafe and Lightning, the USB-C connector does not have an up or down orientation. You simply have to line the connector correctly, and you wouldn’t have to worry about flipping it to plug it in properly. Another key thing to remember is that the cables have the same connectors on both ends. This means that you would not have a hard time figuring out which end goes where.

Comparing USB-C and USB 3.1

The USB-C connection type’s default protocol is USB 3.1. Theoretically, at 10Gbps, USB 3.1 is twice as fast as USB 3.0. However, the ports for USB 3.1 can still be found in their original, larger shape. Such ports are referred to as ‘USB 3.1 Type-A. Generally, it has become more common to see USB 3.1 ports with USB-C connectors.

How to fix USB-C issues in a Windows 10 computer

Some of the notifications you might encounter when the USB-C connection is not working include the following:

• You might be able to fix your USB device
• Slow USB charger connection
• Display connection might be limited
• PC isn’t charging
• The USB device might not work
• These two devices can’t communicate
• The USB device might not be working properly
• Use a different USB port
• The USB or Thunderbolt device functionality might be limited

Every notification has its solution. Whether you need to fix USB-C compatibility or update your drivers, there’s always something you can do to resolve the issue.

What to do when you see the ‘You might be able to fix your USB device’ error notification

If you see this notification while trying to use a USB-C connection type, there must be something wrong with the device or the drivers on your computer. You can run the troubleshooter for hardware and devices, or you can update your drivers to resolve the problem.

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Running the Hardware and Devices troubleshooter

1. On your keyboard, press Windows Key+S.
2. Type “control panel” (no quotes), then hit Enter.
3. Once Control Panel is up, go to the top-right corner of the window and click the View By option.
4. Select Large Icons from the options.
5. Click Troubleshooting.
6. Go to the left-pane menu, then click View All.
7. Select Hardware and Devices.
8. Click Next, then follow the on-screen instructions.

The tool will start to identify issues with your hardware and devices, attempting to repair them.

Using Windows Update to fix the device drivers

1. Right-click the Windows icon on your taskbar.
2. Select Settings from the list.
3. Click Updates & Security.
4. Go to the left-pane menu and select Windows Update.
5. Go to the right pane, then click Check for Updates.
6. Install all the available updates.

Updating your device drivers

Drivers Ndd Port Devices App

It is possible that the device drivers in your computer are corrupted, damaged, or outdated. You can update them to give your unit a fresh set of drivers. There are two ways you can do this—going to the manufacturer’s website or automating the update process, using Auslogics Driver Updater.

It is worth noting that manually updating your drivers can be time-consuming and risky. As we’ve mentioned, you have to search for the compatible drivers on the manufacturer’s website. If you download and install the wrong drivers, you might cause more problems to your computer.

Resolve PC Issues with Driver Updater

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On the other hand, when you automate the process with the help of Auslogics Driver Updater, you are avoiding possible PC damage. The best part is, the tool will take care of all problematic drivers—not just the one which caused the USB-C connection type problem. So, you will notice a significant improvement in your PC’s performance and speed.

Finding the error codes for device issues

It is important to know the error code to address problems with your device appropriately. To acquire the error code, simply follow the steps below:

1. Right-click the Windows icon on your taskbar.
2. Select Device Manager from the list.
3. Right-click the problematic device, then select Properties.
4. Go to the Device Status dialog box to see the error code.

How to fix slow USB charger connected

When the ‘slow USB charger connected’ notification shows up, there are various possible reasons behind it. Here are some of them:

• You’re using a charger that is not compatible with your device or computer.
• Your charger’s power is insufficient for your device or computer. It is worth noting that devices with USB-C connectors have larger power limits. So, charging should be faster with greater levels of power, as long as the device supports USB power delivery.
• You have not properly connected the charger to the port on your device or computer.
• The cable’s power capacity is not sufficient for the charger itself, the device, or the computer.
• Your USB port is dusty or dirty, preventing proper insertion of the charger.
• You’ve connected the charger to your device or computer through an external dock or hub.

You can fix this problem by using the charger and cable that came with your device. These peripherals are designed according to industry standards. So, they have the right power capacity to speed up charging. On the other hand, you can also check if your charger is properly connected to the USB-C port on your device or computer. If the port is dusty or dirty, you can use compressed air to clean it.

Note: Systems with available USB-C connectors have higher power limits, and they can support up to 5V, 3A, or 15W.

Resolving the ‘Display connection might be limited’ error notification

There are many reasons why you see this error notification. It is possible that the dongle has new features that the cable, device, or PC do not support. You should also check if you’ve connected the dongle to the correct port or through an external dock or hub. On the other hand, it is possible that the other devices with the USB-C connection are interfering with the dongle.

You should know that a USB-C connector has Alternate Modes which you can use for non-USB connectors. These modes are HDMI, DisplayPort, and MHL. So, you can resolve the ‘Display connection might be limited’ error notification by checking if your PC, cable, and external display support the aforementioned alternate modes. You can also try to check if the dongle or device is directly connected to your computer. If it is yet the problem persists, try using a different cable.

Getting rid of the ‘PC isn’t charging’ error notification

This error notification is possibly caused by the following:

• You’ve used an incompatible charger.
• You’ve used a charger with lower power limits, preventing it from properly charging your device or computer.
• You’ve incorrectly connected the charger to the port on your PC.
• The cable’s power capacity cannot accommodate the charger.
• The USB ports are dusty or dirty, preventing proper insertion of the charger.
• You’ve connected the charger through an external hub or dock.

You can fix USB-C compatibility issues by using the charger and cable that came with your device’s or computer’s packaging. You can also use compressed air to clean the ports, enabling you to insert the dongle correctly.

Resolving ‘The USB device might not work’ error

This error notification shows up when the Windows version on your PC does not support the driver for the device you’re trying to connect to the USB-C port. So, the solution to this is to install all the latest updates for your operating system. You can do this by following the instructions below:

1. Click the Search icon on your taskbar.
2. Type “settings” (no quotes), then hit Enter.
3. Select Update & Security.
4. Click Check for Updates.
5. Install the available updates.

How to fix ‘These two devices can’t communicate’ error

You will see this error notification will show up when you are having trouble connecting two devices via USB-C. It is possible that one or both of the devices do not support the USB-C connection type. The workaround here is ensuring that you are connecting two Windows computers.

Resolving the error ‘USB device might not be working properly’

If your computer does not support the device you’re trying to connect via USB-C, you will see this error message. It is also possible that the power on your laptop is limited because you’re sourcing it from your battery. In this case, you can try using a different computer, or you can try plugging your device into an external power source.

What to do when you get a ‘Use a different USB port’ prompt

When you get this error notification, it is likely that the USB port does not support Thunderbolt, DisplayPort, or MHL. If this is the case, then you can try using a different port on your PC. It is also possible that the functionality of the USB device had become limited when you connected it to a particular port. You can try plugging it to a different port on your computer to resolve the problem.

Resolving the error ‘USB or Thunderbolt device functionality might be limited’

The reasons behind this error notification are similar to what caused the limited display connection issues. So, you can resolve this by making sure that your PC and cable support the same USB-C features as the device you’re trying to connect. You also have to make sure that the dongle is directly connected to your computer.

Which connection type do you prefer?

Let us know in the comments below!

Sun Dual 10GbE XFP PCIe ExpressModule User’s Guide

C H A P T E R 5

Configuring the nxge Device Driver Parameters

The nxge device driver controls the Sun Dual 10GbE interfaces. You can manually set the nxge driver parameters to customize each device in your system.

This chapter lists the available device driver parameters and describes how you can set these parameters.

nxge Hardware and Software Overview

The Sun Dual 10GbE XFP PCIe ExpressModule provides two 10-Gigabit full-duplex networking interfaces. The device driver automatically sets the link speed to 10000 Mbit/sec and conforms to the IEEE 802.3 Ethernet standard. Each interface has 8 receive DMA channels and 12 transmit DMA channels to enable parallel processing of the packets.

The Sun Dual 10GbE XFP PCIe ExpressModule extends CPU and OS parallelism to networking with its support for hardware-based flow classification and multiple DMAs. Using CPU thread affinity to bind a given flow to a specific CPU thread, the EM enables a one-to-one correlation of Rx and Tx packets across the same TCP connection. This functionality can help avoid cross-calls and context switching to deliver greater performance while reducing the need for CPU resources to support I/O processing. The Sun 10-Gigabit Ethernet EM uses the Sun MAC controller to map the 10-Gigabit XAUI interface onto the PCI Express form factor. The EM supports 10 Gbit/sec bandwidth using eight transmit and eight receive lanes.

Setting nxge Driver Parameters on a Solaris Platform

You can set the nxge device driver parameters in two ways:

• Using the ndd utility
• Using the nxge.conf file

If you use the ndd utility, the parameters are valid only until you reboot the system. This method is good for testing parameter settings.

To set parameters so they remain in effect after you reboot the system, create a
/platform/sun4u/kernel/drv/nxge.conf file and add parameter values to this file when you need to set a particular parameter for a device in the system.

Setting Parameters Using the ndd Utility

Use the ndd utility to configure parameters that are valid until you reboot the system.

The following sections describe how you can use the nxge driver and the ndd utility to modify (with the -set option) or display (without the -set option) the parameters for each nxge device.

Noninteractive and Interactive Modes

You can use the ndd utility in two modes:

• Noninteractive
• Interactive

In Noninteractive mode, you invoke the utility to execute a specific command. Once the command is executed, you exit the utility. In Interactive mode, you can use the utility to get or set more than one parameter value. Refer to the ndd(1M) man page for more information.

To Specify Device Instances for the ndd Utility

Before you use the ndd utility to get or set a parameter for an nxge device, you must specify the device instance for the utility.

Check the /etc/path_to_inst file to identify the instance associated with a particular device.

To Specify Parameter Values Using the ndd Utility

This procedure describes how to modify and display parameter values.

1. Modify a parameter value, using the -set option.

If you invoke the ndd utility with the -set option, the utility passes value, which must be specified, down to the named /dev/nxgedriver-instance, and assigns the value to the parameter:

where number is the driver instance, for example /dev/nxge0, /dev/nxge1.

2. Display the value of a parameter by specifying the parameter name and omitting the value.

When you omit the -set option, the utility queries the named driver instance, retrieves the value associated with the specified parameter, and prints the value:

To Use the ndd Utility in Interactive Mode

1. List all the parameters supported by the nxge driver by typing ?.

2. Modify a parameter value by specifying ndd /dev/nxgenumber:

After you enter the parameter name, the ndd utility prompts you for the parameter value.

Setting Parameters Using the nxge.conf File

Specify the driver parameter properties for each device by creating a nxge.conf file in the /kernel/drv directory. Use a nxge.conf file when you need to set a particular parameter for a device in the system.

The man pages for prtconf(1M) and driver.conf(4) include additional details. See To Access a Man Page.

To Access a Man Page

Type the man command plus the name of the man page.

For example, to access man pages for prtconf(1M), type:

To Set Driver Parameters Using an nxge.conf File

1. Obtain the hardware path names for the nxge devices in the device tree.

a. Check the /etc/driver_aliases file to identify the name associated with a particular device:

b. Locate the path names and the associated instance numbers in the
/etc/path_to_inst file.

In this example:

• The first part within the double quotes specifies the hardware node name in the device tree.
• The number not enclosed in quotes is the instance number (shown in bold italics for emphasis).
• The last part in double quotes is the driver name.

To identify a PCIe device unambiguously in the nxge.conf file, use the name, parent name, and the unit address for the device. Refer to the pci(4) man page for more information about the PCIe device specification.

In this example:

• name = 'pciex108e,abcd'
• parent = '/pci@780/pci@0/pci@8/network@0'
• unit-address = '0'

2. Set the parameters for the nxge devices in the /platform/sun4u/kernel/drv/nxge.conf file.

• The following parameters can be set using the /platform/sun4u/kernel/drv/nxge.conf file.
• The following parameters operate on a per port basis and can be set using the /platform/sun4u/kernel/drv/nxge.conf file.

In the following example, the ports of all the Sun Dual 10GbE XFP PCIe ExpressModule are being set for load balancing Rx traffic based on the IP source address. The default value is F80, indicating Rx load balancing based on IP 5-tuple. Notice the semicolon at the end of the last parameter.

The following example shows ports on two different cards being set. Only one node needs to be specified.

3. Save the nxge.conf file.

Setting Parameters on a Linux Platform

You can use the ethtool utility or the configtool utility to set parameters on a Linux platform.

Using the ethtool Utility to Set Parameters

This section provides useful ethtool commands to use for setting paramaters.

To Determine Available Parameters

Determine which parameters are available using the ethtool utility:

Following are some common parameters that can be changed:

Drivers Ndd Port Devices Usb

rx-usecs and rx-frames control the RX interrupt rate per RX DMA channel. RX interrupt will be generated after rx-frames have been received or after rx-usecs time interval if fewer than rx-frames have been received within the interval. For low latency applications, set rx-usecs to a smaller value. For bulk traffic, use larger values of rx-usecs and control the rate with rx-frames.

rx-frames-irq controls the maximum number of RX packets processed with a single RX interrupt.

To Change RX Coalesce Parameters

Type the ethtool -C command:

To Obtain the Status of L4 Hardware

Type the ethtool -k command:

Setting Parameters Using the Bundled configtool Utility

This section describes how to use the commands in the configtool utility.

To Obtain a List of Tunable Parameters

Use the nxge_configif-nameget command:

These classification variables define how each IP class is configured. This parameter also controls how the flow template is constructed and how packets are distrubuted within RDC groups.

Note - The classification variables are modified on an EM basis. That is, if any of these variables is modifiied for one port, the change carries over to all other ports of that EM.

Drivers Ndd Port Devices Terminal

To Obtain a Specific Variable

Type nxge_config if-name get param-name:

To Set a Specific Variable

Type the /usr/local/bin/nxge_config if_name set param_name value:

Drivers Ndd Port Devices Inc

Tuning for Maximum Performance on a Linux Platform

The following tunings improve the performance of the Sun x8 Express Dual 10-Gigabit Ethernet device driver on a system running the Linux operating system.

To Tune for Maximum Performance on a Linux Platform

1. Create the conf file that will be called by the sysctl utility.

For example, sysctl_e1000.conf

2. Set up the sysctl utility.

Sun Dual 10GbE XFP PCIe ExpressModule User’s Guide

820-1606-12

Copyright © 2008 Sun Microsystems, Inc. All Rights Reserved.