1. Drivers Ncomputing Multifunction Devices Wireless
2. Drivers Ncomputing Multifunction Devices Scanner
3. Drivers Ncomputing Multifunction Devices Windows 10

Linux already includes a number of drivers for multi-function devices. One of the ways to support them is the Multi-Function Devices (MFD) subsystem. It handles independent devices 'glued' together into one hardware block which may contain some shared resources. MFD allows access to device registers either directly, or using a common bus. X series Ncomputing bangladesh virtual desktop from Globacomm. The X-series direct connect, desktop virtualization kits enable up to 11 eleven users to simultaneously share a single PC at a fraction of the cost of a typical PC.

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If a multifunction PCI device conforms completely to the PCI multifunction standard, the PCI bus driver enumerates the individual functions. The PCI bus driver manages the fact that there is more than one function residing at a single device location. To the rest of the system, the individual functions operate like independent devices.

Vendors of a PCI multifunction device on an NT-based platform must do the following:

• Ensure that the device conforms to the PCI multifunction specification.

• Provide a PnP function driver for each function of the device.

  Since the system-supplied bus driver handles the multifunction semantics, the function drivers can be the same drivers that would be used if the functions were packaged as individual devices.

• Provide an INF file for each function of the device.

  The INF files can be the same files that would be used if the functions were packaged as a individual devices. The INF files do not need any special multifunction semantics.

For example, the following figure shows the sample device stacks that might be created for a multifunction PCI device with ISDN and modem functions.

As shown in the previous figure, rather than enumerating one multifunction device, the PCI driver enumerates two child devices. The PnP manager treats each child device like a typical device, locating INF files, loading the appropriate drivers, calling their AddDevice routines, and so forth until a device stack is created for each device. The PCI driver arbitrates the resources for the child devices and manages any other multifunction aspects of the device. The vendor of the multifunction card provides function drivers and INFs for the ISDN and modem devices, just as if they were separate devices.

The illustration focuses on the function driver and bus driver for each function and their associated FDO and PDO. Any filter drivers (and filter DOs) are omitted for simplicity.

Audio devices (='sound cards') are recognized and used automatically by NoTouch. Most machines only have one sound card, but this card has several audio input and output jacks that are on the front or back of the computer system.

If you connect a USB headset (or generally speaking any other USB audio device), this is technically a second audio device (i.e. another sound card). Don't worry - NoTouch will handly this for you, just as a regular desktop operating system handles this - external devices get precedence over internal ones.

There are Hotkeys to modify audio volume - Please see this article on how to change keyboard shortcuts: Hotkeys

Please note that in a VDI world audio is usually generated on a server-side virtual desktop (i.e. inside a Windows system in most cases) and then forwarded over a protocol like ICA/HDX, RDP, PCoIP to the client. If you use Firefox, you need to enable the 'Force execution as root' parameter in the Connection settings, otherwise Firefox will not be allowed to access the sound device.

IMPORTANT NOTE: For RX-HDX and RX420(HDX) thin clients, the default audio setting optimizes the USB audio quality and performance. This may have a negative effect on analog audio. If analog audio (headset/speaker) or HDMI audio (built-in monitor speaker) is to be used, please follow the knowledge base article here to configure the proper audio setting to provide best audio quality and performance.

• 3How to set the default sound card

General audio troubleshooting guides

• If you log in to the local configuration and click on 'Play test sound', do you hear sound? If so, the local audio infrastructure is working, then look in the protocol specific settings or server policies. Audio forwarding could be just deactivated.
  • If you do not hear the test sound, check volume and potentially change audio parameters, the sound may be routed to the wrong jack.
  • Also, if you don't hear the test sound, use a different (newer) OS kernel version. Your kernel might not have the drivers, a higher kXYZ number might fix that.

• A good 'catch-all' test is to change the 'Unmute mixers' parameter.

• If output works, but input (microphone) doesn't. Now this is very likely a problem in the settings of the protocol. While e.g. Citrix and RDP are capable of transporting microphone/audio input, please make sure that:
  • you have audio input forwarding set to on (protocol-specific connection options).
  • in case of RDP, you use FreeRDP. Only FreeRDP can do audio-in, the older Rdesktop doesn't.
  • in case of Firefox, enable the 'Force execution as root' parameter in the Connection settings

Audio parameters

• Audio device. This parameter governs to which audio device the audio output is sent.
• Unmute mixers. Do not mute mixer channels. This may sound weird, but it can change the behavior of problematic devices.
• Default audio device. Set the primary audio device.
• Ignore USB devices. List of USB devices to ignore.
• Mixer channel parameters. These govern the mixer volumes for different channels. 0 means lowest, 100 largest. The default is 50:
  • Master. Master output volume.
  • Front. Front jack volume.
  • Microphone. Microphone input volume.

How to set the default sound card

The 'Default audio device' parameter allows to override the system's primary audio device setting. Remember, NoTouch tries to be as smart as a computer system can be and give preference to an external device if one is plugged in. I.e. if a USB headset is connected, it will be used. With the 'Default audio device' parameter you can change that - set it one of these values:

• usb. This will make the USB device the default. This is kind of default behavior, but you can still set it in case the system can not figure it out on its own.
• hdmi. The HDMI port will be used as audio output.
• dp. The DisplayPort port will be used as audio output.
• Other values. You can also use this parameter to specifically route audio to a device - see below.

Routing to a specific device

The parameter 'Default audio device' accepts a specification that you can aquire from the 'soundinfo' command.

Drivers Ncomputing Multifunction Devices Wireless

1. Log in via SSH and get root privileges
2. Type in:
   • soundinfo

The audio parameter is formed like this: Card name,profile

Looking at the soundinfo output, the 'card name' is rather obvious - it is text within the quotes. The 'profile' is one of these lines that follow the card name, the things likeoutput:analog-stereo

It's actually very simple once you see it. For example, if you look at the sample soundinfo output below, these two possibilites that would make sense:

• HD-Audio Generic,output:hdmi-stereo
• HDA Intel PCH,output:analog-stereo

as compared with the output below:

Legacy audio parameters

Drivers Ncomputing Multifunction Devices Scanner

Older versions of NoTouch before 2.39 or 2.40 had a few other parameters that are not in use any more.

Drivers Ncomputing Multifunction Devices Windows 10

• Use aumix. Uses an alternate method for driving the audio mixer. Use if you find you are unable to change the volume.
• Mixer channel parameters. These govern the mixer volumes for different channels. 0 means lowest, 100 largest. The default is 50:
  • PCM. PCM output volume. This is now part of the 'Master' parameter.
  • Capture. Capture input volume. This is now part of the 'Microphone' parameter.