Drivers Viking Port Devices

12/10/2021by admin

Common serial port names are /dev/ttyS0, /dev/ttyS1, etc. Thenaround the year 2000 came the USB bus with names like /dev/ttyUSB0 and/dev/ttyACM1 (for the ACM modem on the USB bus). Multiport serialcard used somewhat differnt names (depending on the brand) such as/dev/ttyE5.

USB question on the Viking Designer SE: Hello, I just purchased the viking designer SE LE and tried my 512 USB stick in the embroidery machine and it would not read it. I did use the USB stick it came with and it worked. Am I understanding it right that you can only use the USB sticks made. For HUSQVARNA VIKING® models that use a USB stick, use Export to export the design as.VP3 format and copy onto the USB stick. For HUSQVARNA VIKING® DESIGNER I, export as.SHV format for floppy disk or USB stick. 5D™ Embroidery Machine Communication For Windows® 10, Windows® 8 and Windows® 7 (English, French, German and Italian). DriverStore is a new and a central location in Windows Vista and Windows 7 where all the driver files will be stored., before they are copied to their final destination during the device driver installation. The location of the driver store is – C: Windows System32 DriverStore. Download and Installation of Garmin Mode Device Drivers In order for Garmin Mode USB devices to communicate with a Windows computer, Garmin USB drivers need to be installed. These drivers are not needed for newer Garmin devices that use a USB mass storage or Media Transfer Protocol (MTP) interface. Page 1 QUICK INSTALLATION GUIDE VIKING 56K EXTERNAL MODEMS (MAC & WIN OS) HARDWARE INSTALLATION 1.Turn off your computer and any attached devices, such as printers or external drives. Locate the serial port on the back of your computer and connect it with the serial cable on the back of the external modem. Page 2 Note: If the CD can not be located, the drivers can be downloaded from the.

Since DOS provided for 4 serial ports on the old ISA bus:COM1-COM4, or ttyS0-ttyS3 in Linux, most serial ports on the newer PCIbus used higher numbers such as ttyS4 or ttyS14 (prior to kernel2.6.13). But since most PCs only came with one or two serial ports,ttyS0 and possibly ttyS1 (for the second port) the PCI bus can now usettyS2 (kernel 2.6.15 on). All this permits one to have both ISAserial ports and PCI serial ports on the same PC with no nameconflicts. 0-1 (or 0-3) are reserved for the old ISA bus (or thenewer LPC bus) and 2-upward (or 4-upward or 14-upward) are used forPCI, where older schemes are shown in parentheses . It's not requiredto be this way but it often is.

If you're using udev (which puts only the device you have on yourcomputer into the /dev directory at boottime) then there's an easy wayto change the device names by editing files in /etc/udev/. Forexample, to change the name of what the kernel detects as ttyS3 towhat you want to name it: ttyS14, add a line similar to this to/etc/udev/udev.rules
BUS'pci' KERNEL'ttyS3',NAME='ttyS14'

On-board serial ports on motherboards which have both PCI and ISAslots are likely to still be ISA ports. Even for all-PCI-slotmotherboards, the serial ports are often not PCI. Instead, they areeither ISA, on an internal ISA bus or on a LPC bus which is intendedfor slow legacy I/O devices: serial/parallel ports and floppy drives.

Devices in Linux have major and minor numbers. The serial portttySx (x=0,1,2, etc.) is major number 4. You can see this (and theminor numbers too) by typing: 'ls -l ttyS*' in the /dev directory. Tofind the device names for various devices, see the 'devices' file inthe kernel documentation.

There formerly was a 'cua' name for each serial port and it behavedjust a little differently. For example, ttyS2 would correspond tocua2. It was mainly used for modems. The cua major number was 5 andminor numbers started at 64. You may still have the cua devices inyour /dev directory but they are now deprecated. For details seeModem-HOWTO, section: cua Device Obsolete.

For creating the old devices in the device directory see:

Dos/Windows use the COM name while the messages from the serial driveruse ttyS00, ttyS01, etc. Older serial drivers (2001 ?) used justtty00, tty01, etc.

The tables below shows some examples of serial device names. TheIO addresses are the default addresses for the old ISA bus (not forthe newer PCI and USB buses).

For more info see the usb subdirectory in the kernel documentationdirectory for files: usb-serial, acm, etc.

On some installations, two extra devices will be created,/dev/modem for your modem and /dev/mouse for amouse. Both of these are symbolic links to the appropriatedevice in /dev.

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Historical note: Formerly (in the 1990s) the use of/dev/modem (as a link to the modem's serial port) wasdiscouraged since lock files might not realize that it was really say/dev/ttyS2. The newer lock file system doesn't fall intothis trap so it's now OK to use such links.

Inspect the connectors

Inspecting the connectors may give some clues but is often notdefinitive. The serial connectors on the back side of a PC areusually DB connectors with male pins. 9-pin is the most common butsome are 25-pin (especially older PCs like 486s). There may be one9-pin (perhaps ttyS0 ??) and one 25-pin (perhaps ttyS1 ??). For two9-pin ones the top one might be ttyS0.

If you only have one serial port connector on the back of your PC,this may be easy. If you also have an internal modem, a program likewvdial may be able to tell you what port it's on (unless it's a PnPthat hasn't been enabled yet). A report from setserial (atboot-time or run by you from the command line) should help youidentify the non-modem ports.

If you have two serial ports it may be more difficult. You could haveonly one serial connector but actually have 2 ports, one of whichisn't used (but it's still there electronically). First check manuals(if any) for your computer. Look at the connectors for meaningfullabels. You might even want to take off the PC's cover and see ifthere are any meaningful labels on the card where the internal ribbonserial cables plug in. Labels (if any) are likely to say something like'serial 1', 'serial 2' or A, B. Which com port it actually is willdepend on jumper or PnP settings (sometimes shown in a BIOS setupmenu). But 1 or A are more likely to be ttyS0 with 2 or B ttyS1.

Send bytes to the port

Labels are not apt to be definitive so here's another method. Ifthe serial ports have been configured correctly per setserial, thenyou may send some bytes out a port and try to detect which connector(if any) they are coming out of. One way to send such a signal is tocopy a long text file to the port using a command like: cpmy_file_name /dev/ttyS1. A voltmeter connected to the DTR pin (seeSerial-HOWTO for Pinout) will display a positive voltage as soon asyou give the copy command.

The transmit pin should go from several volts negative to a voltagefluctuating around zero after you start sending the bytes. If it doesn't(but the DTR went positive) then you've got the right port but it'sblocked from sending. This may be due to a wrong IRQ, -clocal beingset, etc. The command 'stty -F /dev/ttyS1 -a' should showclocal (and not -clocal). If not, change it to clocal.

Another test is to jumper the transmit and receive pins (pins 2 and 3of either the 25-pin or 9-pin connector) of a test serial port. Thensend something to each port (from the PCs keyboard) and see if it getssent back. If it does it's likely the port with the jumper on it.Then remove the jumper and verify that nothing gets sent back. Notethat if 'echo' is set (per stty) then a jumper creates an infiniteloop. Bytes that pass thru the jumper go into the port and come rightback out of the other pin back to the jumper. Then they go back inand out again and again. Whatever you send to the port repeats itselfforever (until you interrupt it by removing the jumper, etc.). Thismay be a good way to test it as the repeating test messages halt whenthe jumper is removed.

As a jumper you could use a mini (or micro) jumper cable (sold in someelectronic parts stores) with mini alligator clips. A small scrap ofpaper may be used to prevent the mini clips from making electricalcontact where it shouldn't. Metal paper clips can sometimes be bentto use as jumpers. Whatever you use as a jumper take care not to bendor excessively scratch the pins. To receive something from a port,you can go to a virtual terminal (for example Alt-F2 and login) andtype something like 'cp /dev/ttyS2 /dev/tty'. Then at another virtualterminal you may send something to ttyS2 (or whatever) by 'echotest_message > /dev/ttyS2'. Then go back to the receive virtualterminal and look for the test_message. See Serial Electrical Test Equipment for more info.

Connect a device to the connector

Another way to try to identify a serial port is to connect somephysical serial device to it and see if it works. But a problem hereis that it might not work because it's not configured right. A serialmouse might get detected at boot-time if connected.

You may put a device, such as a serial mouse (use 1200 baud), on a portand then use minicom or picocom to communicate with that port. Thenby clicking on the mouse, or otherwise sending characters with thedevice, see if they get displayed. It not you may have told picocomthe wrong port (such as ttyS0 instead of ttyS1) so try again.

Missing connectors

If the software shows that you have more serial ports than youhave connectors for (including an internal modem which counts as aserial port) then you may have a serial port that has no connector.Some motherboards come with a serial port with no cable or externalserial DB connector. Someone may build a PC from this and decide notto use this serial port. There may be a 'serial' connector and labelon the motherboard but no ribbon cable connects to its pins. To usethis port you must get a ribbon cable and connector. I've seendifferent wiring arrangements for such ribbon cables so beware.

If you don't use devfs (which automatically creates such devices) anddon't have a device 'file' that you need, you will have to create it.Use the mknod command or with the MAKEDEV shell script.Example, suppose you needed to create ttyS0:

The MAKEDEV script is easier to use.See the man page for it. For example, if you needed to make thedevice for ttyS0 you would just type:

If the above command doesn't work (and you are the root user), lookfor the MAKEDEV script in the /dev directory and run it.

This handles the devices creation and should set the correct permissions.For making multiport devices see Making multiport devices in the /dev directory.


By default, non-admin domain users do not have permissions to install the printer drivers on the domain computers. To install a driver, the user should have local admin privileges (for example, by adding to the local Administrators group). This is great from the point of security because the installation of an incorrect or fake device driver could compromise PC or degrade the system performance. However, this approach is extremely inconvenient in terms of the IT-department, because it requires Support-team intervention when a user tries to install a new printer driver.

You can allow non-administrator users to install printer drivers on their Windows 10 computers (without the need to grant local Admin permissions) using Active Directory Group Policies.

Configure GPO to Allow Non-Administrators to Install Printer Drivers

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At first, create a new (or edit an existing) GPO object (policy) and link it to the

Expand the following branch in the Group Policy editor: Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies > Security Options. Find the policy Devices: Prevent users from installing printer drivers.

Set the policy value to Disable. This policy allows non-administrators to install printer drivers when connecting a shared network printer (the printer’s driver downloaded from the print-server host). Then you can set the policy value to Disable, any unprivileged user can install a printer driver as a part of a shared printer connection to a computer. However, this policy does not allow downloading and installing an untrusted (not-signed) printer driver.

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Adding Printer Device GUIDs Allowed to Install via GPO

The next step is to allow the user to install the printer drivers via GPO. In this case, we are interested in the policy Allow non-administrators to install drivers for these device setup classes in the GPO section Computer Configuration > Policies > Administrative Templates > System > Driver Installation.

Enable the policy and specify the device classes that users should be allowed to install. Click the Show button and in the appeared window add two lines with device class GUID corresponding to printers:

  • Class = Printer {4658ee7e-f050-11d1-b6bd-00c04fa372a7};
  • Class = PNPPrinters {4d36e979-e325-11ce-bfc1-08002be10318}.

You can find a full list of the device class GUIDs in Windows

When you enable this policy, members of the local Users group can install a new device driver for any device that matches the specified device classes.

Note. You can enable this policy through the registry using the command:

You can find the list of allowed to install device GUIDs under the registry key: HKEY_LOCAL_MACHINESoftwarePoliciesMicrosoftWindowsDriverInstallRestrictionsAllowUserDeviceClasses.

Now save the policy.

Configuring Point and Print Restrictions Policy

In Windows 10 there is another feature related to the UAC (User Account Control) settings, which occurs when you try to install a shared network printer. If the UAC is enabled, a message appears in which you want to specify the credentials of the Administrator. If UAC is disabled, then when you try to install the printer under the non-admin user—the system hangs for some time and finally displays an error message: “Windows cannot connect to the printer. Access is denied“.

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To solve this problem, you need to disable the policy Point and Print Restrictions. This policy is located under the Computer and User Configuration section of the GPO editor. In order to enable compatibility with previous versions of the Windows operating system, it is recommended to disable both policies. They are located in the following sections:

  • Computer Configuration > Policies > Administrative Templates > Printers;
  • User Configuration > Policies > Administrative Templates > Control Panel > Printers.

Then you should disable this policy for Windows 10 computers, the security warnings, and elevated command prompts do not appear when the user tries to install the network printer or when printer driver is updating.

Note. You can disable Point and Print Restrictions via the registry. Use the following command:

If you want to restrict the list of print servers from which users are allowed to install print drivers without admin permissions, you need to set the Point and Print Restriction policy to Enabled.

Then enable the option “Users can only point and print to these servers”. In the
Enter fully qualified server names separated by semicolons” specify a list of your trusted print servers (FQDN).

Under the “Security Prompts” section select the “Don’t show warning or elevation prompt” for the policy parameters “Then installing drivers for a new connection” and “Then updating drivers for an existing connection”.


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Test the Policy to Allow Users to Install Printer Drivers

It remains to test the policy on client computers (requires restart). After rebooting and applying Group Policy settings, users will be allowed to install printer drivers without Admin permissions.

Tip. After installing the update KB3170455, released on July 12, 2016, in order to successfully install the printer, the printer driver must meet the following requirements:

  • The driver must be signed by a trusted digital signature;

  • The driver must be packed (Package-aware print drivers). Installing of the unpacked (non-package-aware) drivers through Point and Print Restrictions is impossible.

This means then when you try to install the non-package-aware v3, you will see the warning “Do you trust this printer?” with the Install driver UAC button, which requires printer drivers installation under the admin account.

You can check your driver type on the print server under the node Print Management > Print Servers > Server Name > Drivers. For package-aware print drivers, you can see the True value in the Packaged column.

AuthorRecent PostsCyril KardashevskyI enjoy technology and developing websites. Since 2012 I'm running a few of my own websites, and share useful content on gadgets, PC administration and website promotion.Latest posts by Cyril Kardashevsky (see all)
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