"Point man is born. Simplicity, discipline is the wise man key." - by shamun

8-bit, 10-bit, 12-bit, 16-bit 24-bit, 32-bit video processing, video processing DVI HDMI SDI IP VGA. Working.

@TODO: Its all about color. And its all about pixel to micro pixel as RGB/YUV format.

How do i make sure my Linux operating system audio drivers are working. But hardware is defected for line in or mic in?

In my motherboard i have line in/mic in. But when i boot my linux i can not get audio in. I have tried all detectors but none is helping.

1. Get a speaker box or head phone

2. Put the head phone jack to the motherboard mic in/line in

3. Grab audacity software and knock your speaker you will see frequency

- if yes, Linux and its drivers are not the issue, culprit is the microphone+hardware

- if no, fix your audio libraries

 

How do i reduce my ATX chassis big computer machine to small unit?

I would like to minimize my system which is ATX power and has PCI-X1 slots. The size is huge, and that is problem, because its not handy and not friendly portable.

1. Buy mini-ITX power supply which has ATX jacks and 12V dc input

2. Buy PCI to PCI cable converter so that you can rotate horizontally (instead of default vertical)

3. Patch and hammer it

Big size is now reduced to small size.

 

How do i connect Mini-PCI express with PCI-X1 cards?

Mini-PCI express slots are same as PCI-X1 cards, most of you think that is true. But for some cards its not, because in 90′s the specification was revised and there is some BUS issues involved.

1. To power the mini-pci express cards you have to put external ATX power which can feed 12volt, 5volt (check the amps too)

2. When the ATX power is supplied it will boot but because of incorrect BUS issues it may not be recognized by OS/BIOS.

So, finally the best move is to go straight PCI-X1 slots. If you have solution post here your research.

how to setup serial console on ubuntu debian fedora centos linux

Practical in Ubuntu: setserial, minicom application requires.

Test my console is it DB9 or USB?

# dmesg | grep tty ;this is for USB
[    0.000000] console [tty0] enabled
[ 4718.771404] usb 3-1: pl2303 converter now attached to ttyUSB0
[ 7828.000574] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[10878.054407] usb 3-1: pl2303 converter now attached to ttyUSB0
$ dmesg | grep tty ; this is for COM1
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic-pae root=UUID=f5afb2f7-bcb2-4c3c-8cd1-0e898e0dc292 ro console=tty0 console=ttyS0,9600n8 quiet splash vt.handoff=7
[    0.000000] console [tty0] enabled
[    0.000000] console [ttyS0] enabled
[    1.155514] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    1.336144] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
[    1.513380] 00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    1.534132] 00:0b: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
[    1.554757] 0000:00:16.3: ttyS4 at I/O 0xf140 (irq = 19) is a 16550A
# setserial -g /dev/ttyUSB[0123] /dev/ttyS[0123]
/dev/ttyUSB0, UART: 16654, Port: 0x0000, IRQ: 0
/dev/ttyS0, UART: unknown, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
/dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
Server setup
vim /etc/default/grub ; This is for Grub2
GRUB_CMDLINE_LINUX='console=tty0 console=ttyS0,9600n8' 
GRUB_TERMINAL=serial 
GRUB_SERIAL_COMMAND="serial --speed=9600 --unit=0 --word=8 --parity=no --stop=1"
:w
update-grub
vim /etc/inittab ; This is for login 
T0:23:respawn:/sbin/getty -L ttyS0 9600 vt100
vim /etc/securetty ; This is to check security ttyS0 or ttyUSB0 open
ttyS0 #showing...
init 6 ; reboot once
Server Connect
# cat /etc/minirc.dfl 
# Machine-generated file - use "minicom -s" to change parameters.
pu port             /dev/ttyUSB0
pu baudrate         9600
pu bits	8
pu parity N
pu stopbits 1
pu rtscts No
# minicom -s -c on

Fedora 16 how to install from VNC, without having trouble?

F16, isolinux.cfg, for working sample.

default vesamenu.c32
#prompt 1
timeout 600

display boot.msg

menu background splash.jpg
menu title Welcome to Fedora 16-Alpha!
menu color border 0 #ffffffff #00000000
menu color sel 7 #ffffffff #ff000000
menu color title 0 #ffffffff #00000000
menu color tabmsg 0 #ffffffff #00000000
menu color unsel 0 #ffffffff #00000000
menu color hotsel 0 #ff000000 #ffffffff
menu color hotkey 7 #ffffffff #ff000000
menu color scrollbar 0 #ffffffff #00000000

label linux
  menu label ^Install a new system or upgrade an existing system
  menu default
  kernel vmlinuz
  append initrd=initrd.img quiet ksdevice=em1 ip=192.168.1.125 netmask=255.255.255.0 gateway=192.168.1.1 vnc keymap=us lang=en_US.UTF-8 selinux=0
label vesa
  menu label Install system with ^basic video driver
  kernel vmlinuz
  append initrd=initrd.img xdriver=vesa nomodeset quiet
label rescue
  menu label ^Rescue installed system
  kernel vmlinuz
  append initrd=initrd.img rescue quiet
label local
  menu label Boot from ^local drive
  localboot 0xffff
label memtest86
  menu label ^Memory test
  kernel memtest
  append -

Reference: 
http://fedoraproject.org/wiki/Anaconda_Boot_Options
http://docs.fedoraproject.org/en-US/Fedora/15/html/Installation_Guide/ch-Boot-x86.html#s2-x86-starting-bootopts
http://be.mirror.eurid.eu/fedora/linux/releases/test/16-Alpha/Fedora/i386/iso/
http://www.redhat.com/archives/kickstart-list/2011-February/msg00041.html
http://www.centos.org/docs/5/html/5.2/Installation_Guide/s1-kickstart2-startinginstall.html

Linux how to make iso file and write to usb as bootable. Or how to make iso to customized iso and then repack to use in cdrom or usb

Download the iso file original one. Extract it to somewhere first. Lets say /tmp/centos

To make USB bootable

1. Modify or Add isolinux/ks.cfg

install

lang en_US.UTF-8

keyboard us

timezone –utc Europe/Brussels

rootpw –iscrypted $6$i5qEWD.

selinux –disabled

authconfig –enableshadow –passalgo=sha512

firewall –service=ssh

bootloader –location=mbr –driveorder=sda –append=”rhgb quiet”

vnc –password=1234

network –bootproto=static –ip=192.168.1.125 –netmask=255.255.255.0 –gateway=192.168.1.1 –nameserver=192.168.1.1

 

2. Make ISO

# mkisofs -o /tmp/cd.iso /home/sun/Downloads/centos/
I: -input-charset not specified, using utf-8 (detected in locale settings)
Using RPM_G000.;1 for  /RPM-GPG-KEY-CentOS-Security-6 (RPM-GPG-KEY-CentOS-Testing-6)
Using RPM_G001.;1 for  /RPM-GPG-KEY-CentOS-Testing-6 (RPM-GPG-KEY-CentOS-Debug-6)
Using RPM_G002.;1 for  /RPM-GPG-KEY-CentOS-Debug-6 (RPM-GPG-KEY-CentOS-6)
Using KS000.CFG;1 for  /home/sun/Downloads/centos/isolinux/ks.cfg (ks.cfg~)
Using DEVIC000.RPM;1 for  /home/sun/Downloads/centos/Packages/device-mapper-event-1.02.53-8.el6.i686.rpm (device-mapper-multipath-libs-0.4.9-31.el6.i686.rpm)
Using DEVIC001.RPM;1 for  /home/sun/Downloads/centos/Packages/device-mapper-multipath-libs-0.4.9-31.el6.i686.rpm (device-mapper-1.02.53-8.el6.i686.rpm)
Using IPTAB000.RPM;1 for  /home/sun/Downloads/centos/Packages/iptables-1.4.7-3.el6.i686.rpm (iptables-ipv6-1.4.7-3.el6.i686.rpm)
Using SELIN000.RPM;1 for  /home/sun/Downloads/centos/Packages/selinux-policy-targeted-3.7.19-54.el6.noarch.rpm (selinux-policy-3.7.19-54.el6.noarch.rpm)
Using OPENS000.RPM;1 for  /home/sun/Downloads/centos/Packages/openssh-server-5.3p1-20.el6.i686.rpm (openssh-clients-5.3p1-20.el6.i686.rpm)
Using NCURS000.RPM;1 for  /home/sun/Downloads/centos/Packages/ncurses-base-5.7-3.20090208.el6.i686.rpm (ncurses-5.7-3.20090208.el6.i686.rpm)
Using OPENS001.RPM;1 for  /home/sun/Downloads/centos/Packages/openssh-clients-5.3p1-20.el6.i686.rpm (openssh-5.3p1-20.el6.i686.rpm)
Using E2FSP000.RPM;1 for  /home/sun/Downloads/centos/Packages/e2fsprogs-libs-1.41.12-3.el6.i686.rpm (e2fsprogs-1.41.12-3.el6.i686.rpm)
Using CRACK000.RPM;1 for  /home/sun/Downloads/centos/Packages/cracklib-2.8.16-2.el6.i686.rpm (cracklib-dicts-2.8.16-2.el6.i686.rpm)
Using COREU000.RPM;1 for  /home/sun/Downloads/centos/Packages/coreutils-8.4-9.el6.i686.rpm (coreutils-libs-8.4-9.el6.i686.rpm)
Using NCURS001.RPM;1 for  /home/sun/Downloads/centos/Packages/ncurses-5.7-3.20090208.el6.i686.rpm (ncurses-libs-5.7-3.20090208.el6.i686.rpm)
Using NSS_S000.RPM;1 for  /home/sun/Downloads/centos/Packages/nss-softokn-freebl-3.12.7-1.1.el6.i686.rpm (nss-softokn-3.12.7-1.1.el6.i686.rpm)
Using FIPSC000.RPM;1 for  /home/sun/Downloads/centos/Packages/fipscheck-1.2.0-4.1.el6.i686.rpm (fipscheck-lib-1.2.0-4.1.el6.i686.rpm)
Using DEVIC002.RPM;1 for  /home/sun/Downloads/centos/Packages/device-mapper-1.02.53-8.el6.i686.rpm (device-mapper-multipath-0.4.9-31.el6.i686.rpm)
Using NFS_U000.RPM;1 for  /home/sun/Downloads/centos/Packages/nfs-utils-lib-1.1.5-1.el6.i686.rpm (nfs-utils-1.2.2-7.el6.i686.rpm)
Using PLYMO000.RPM;1 for  /home/sun/Downloads/centos/Packages/plymouth-0.8.3-17.el6.centos.i686.rpm (plymouth-scripts-0.8.3-17.el6.centos.i686.rpm)
Using DEVIC003.RPM;1 for  /home/sun/Downloads/centos/Packages/device-mapper-multipath-0.4.9-31.el6.i686.rpm (device-mapper-event-libs-1.02.53-8.el6.i686.rpm)
Using CRYPT000.RPM;1 for  /home/sun/Downloads/centos/Packages/cryptsetup-luks-1.1.2-2.el6.i686.rpm (cryptsetup-luks-libs-1.1.2-2.el6.i686.rpm)
Using LIBSE000.RPM;1 for  /home/sun/Downloads/centos/Packages/libselinux-2.0.94-2.el6.i686.rpm (libselinux-utils-2.0.94-2.el6.i686.rpm)
Using PLYMO001.RPM;1 for  /home/sun/Downloads/centos/Packages/plymouth-scripts-0.8.3-17.el6.centos.i686.rpm (plymouth-core-libs-0.8.3-17.el6.centos.i686.rpm)
Using DEVIC004.RPM;1 for  /home/sun/Downloads/centos/Packages/device-mapper-event-libs-1.02.53-8.el6.i686.rpm (device-mapper-libs-1.02.53-8.el6.i686.rpm)
  3.80% done, estimate finish Sun Sep  4 00:47:49 2011
  7.60% done, estimate finish Sun Sep  4 00:47:49 2011
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 15.19% done, estimate finish Sun Sep  4 00:47:55 2011
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 30.37% done, estimate finish Sun Sep  4 00:47:58 2011
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 37.96% done, estimate finish Sun Sep  4 00:47:56 2011
 41.76% done, estimate finish Sun Sep  4 00:48:00 2011
 45.56% done, estimate finish Sun Sep  4 00:48:02 2011
 49.36% done, estimate finish Sun Sep  4 00:48:03 2011
 53.15% done, estimate finish Sun Sep  4 00:48:02 2011
 56.94% done, estimate finish Sun Sep  4 00:48:03 2011
 60.74% done, estimate finish Sun Sep  4 00:48:05 2011
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 94.90% done, estimate finish Sun Sep  4 00:48:04 2011
 98.70% done, estimate finish Sun Sep  4 00:48:05 2011
Total translation table size: 0
Total rockridge attributes bytes: 0
Total directory bytes: 18432
Path table size(bytes): 86
Max brk space used 22000
131714 extents written (257 MB)

3. yum -y install unetbootin.i686
4. unetbootin load
5. load your /tmp/cd.iso and burn it to your USB stick

Done.