Solving Linux Serial Kernel Issue

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Here are some simple steps that can help you fix your serial Linux kernel issue. g.To use the serialized gadget driver, you need a Linux kernel on the widget side for “USB gadget support”, for “USB device controller” (for product, net2280), and for personalized “Gadget series” configuration. All of this is specified in the “Support for USB gadgets” section during kernel configuration. Then restructure and install the kernel or modules.

To use the serial port as a console, you usually need to embed the media in your ownKernel – it will not be compiled bypassing the kernel. Serial PC PortsThis is the customization service next to the menu option:

You need to build serial support into each core, not as a module.

In fact, you can specify multiple devices to receive console output. You canSet a new kernel command line parameter to select devicesuse for system output.

You can specify multiple console = options from the kernel command line.The output is displayed like everyone else. However, the most advanced device is used.They start with / dev / console . For example:

sets the original / dev / console to bring you to the forethe current virtual console and kernel messages are likely to appear as on VGAConsole or second serial port (ttyS1 or even COM2) at 9600 baud.

Note that you can only define one console and one device type (sequentiallye, video).

If no Wii device is listed, it will first find computers capable ofused as a software console. At one time, the system of viewsfirst for each type of VGA card and then for each serial port. If so, then not yourselfIf you have a VGA card in your kit, the first serial interface can be used automatically.become a console.

You need to build a new device for / dev / console to work. Official / dev / console is now Character Guitar 5.1.

(You can also use the bridging device as a console.See Documentation / network / netconsole.txt for more information on this.)

Here’s an illustration using / dev / ttyS1 (COM2) as the console.Replace approximate values ​​if necessary.

1. Create / dev / console (real console) and on (virtual / dev / tty0 master.)Console):

   When does the kernel start using a serial console?

   The kernel cannot start using the serial console until it knows where the device is. This usually happens when the driver enumerates all of our serial devices, which may happen marginally or more often after the kernel has started. Kernels 2.6.10 and newer have 1 “Early uart” driver that runs very early in the boot process.

    CD / devrm -f wii tty0mknod -m 622 console c 15 1mknod -m 622 tty0 c 3 0

2. LILO can also accept input from an absolutely serial device. What veryuseful option. How toSet LILO to respect the serial port:In lilo.conf (global section):

    series = 1.9600n8 (ttyS1, Bd, 9600 no parity, 8 bits)

3. Configure the kernel flags that can be used for the new kernel,again in lilo.conf (kernel section):

    append = "console = ttyS1,9600"

4. Of course, run getty on the serialized port to be able to access the Internet.as soon as the system starts up. This is done using an absolute addition line.so in / etc / inittab (the exact format depends on your Getty):

    S1: 23: respawn: / sbin / getty -L ttyS1 9600 vt100

5. Init and /etc/ioctl.save

   Sysvinit gets its stty parameters by hand in / etc called /etc/ioctl.save . DELETE THIS FILE before using the serial number.First console time, otherwise most likely initializationSet the baud rate to 38400 (virtual console baud rate).

6. / dev / console and XPrograms that want to do something that would normally involve a virtual consoleOpen / dev / console . When did your organization create aNative device / dev / console ,and your console is usually NOT a virtual console on which some programs do not run.These programs want to access and use the VT interface. / dev / console instead of / dev / tty0 . Here are some of the computer programs:

    Xfree86, svgalib, gpm, SVGATextMode

   However, this should be fixed in modern versions of these programs.

   Note that if you have console = parameter (or with console = / dev / tty0 ), / dev / console is almost the same as / dev / tty0 .Then and today everything will work.

7. Thank you

   Thanks to Geert Utterhoven for the port of its own patches from 2.1.4x to 2.1.6x, taking into account the maintenanceIntegration of related patches into m68k, ppc, and alpha.

 console = device, parametersDevice: tty0 for front virtual console                ttyX to work with other virtual consoles                ttySx for serialized port                lp0 relative to the first parallel port                ttyUSB0 for the first serial USB deviceOptions: depending on the newthe pilot. For the series it is prt usually sets baud rate / parity / bits / flow control                currently port in BBBBPNF format, to which BBBB                Speed, P - parity (n / o / e), N - number of bits,                and F - keep flow ("r" for RTS). is an Failure to pay 9600n8. The maximum possible baud rate is 115,200 baud.

 console = ttyS1,9600 console = tty0

 CD / devrm -f xbox tty0mknod -m 622 console c some 1mknod -m 622 tty0 c three 0

 serial = 1 9600n8 (ttyS1, 9600 bits, no parity, 8 bits)

 append is "console = ttyS1,9600"

 S1: 23: respawn: / sbin / getty -L ttyS1 9600 vt100

 Xfree86, svgalib, gpm, SVGATextMode

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Serijnyj Nomer Yadra Linux
Serie Del Kernel De Linux
Linux Kernel Serieel
Linux Kernel Seriell
Serie Du Noyau Linux
Linux Kernel Serial
Serial Jadra Linuksa
Linux Karna Seriell
Seriale Del Kernel Linux
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