I am writing a simple serial port programing based on s3c2410. However, I found that I cannot change serial port attributes including baud rate using tcsetattr. I think i have follow "Serial Programming Guid for POSIX operating system" strictly, but why it does not work? the baund rate cannot be changed to 115200?
View 2 RepliesI am using the command:
Code:
sudo stty -F /dev/ttyUSB0 115200
to try and change the baud rate from 9600 to 115200 on device USB0, but I keep getting this error.
Code:
stty: /dev/ttyUSB0: unable to perform all requested operations
ttyUSB0 is not locked, and I know it is capable of 230400 b/s so I know it should handle 115200 just fine.
The /etc/inittab file is configured as the following.
Code:
# vi /etc/inittab
/sbin/getty -l /bin/login /dev/ttyS0 9600 vt100
It always makes the baud rate 9600.How can I make the baud rate be configured automatically according to the terminal's baud rate? Can I?
I use Minicom on the recenet Ubunto Linux and have a single USB 2 serial device and my Minicom doesn't have 57600 for selection.
View 7 Replies View RelatedI am using openSUSE 11.3 , 32bit.I do the appropriate setting in 'minicom' application.I have two devices 'a' giving message at debug port at 9600 baud while 'b' at 115200 baud..Both 'a' & 'b' work fine when connected to serial port of computer.'a' works well if I connect it to serial to USB adapter which is plugged into USB port of computer.In case of 'b' , the above method yields failure.Do I have to set anything for device /dev/ttyUSB0 ?
View 1 Replies View RelatedI just did a fresh install of natty on my desktop and at first I had a box bouncing around my screen saying input not supported. I changed my refresh rate from 50 to 52 and it got rid of it, but I still have the bouncing box on the login screen. How can I adjust the refresh rate for that?
View 2 Replies View RelatedFirst off I am dual booting Windows 7. While in Win7 I have absolutely NO monitor issues. Since installing 10.04 I get a shaky unreadable display. To remedy the situation temporarily I have adjusted the resolution to 1200/800 but this is not a fix just a band aid. I should be able to run 1920/1080. As soon as I do this I get the shaky screen. I cannot change the refresh rate from 60 mhz. Again I am apprehensive by posting this because I have been flamed in other forums simply for being a noob and not knowing what to do but I would love to tap into the resources of you more experienced members.
View 2 Replies View RelatedVERY new to linux, erm but I have an issue that needs solving!I recently moved to university, where their network blocks sftp port 22, this means that I cannot connect to my FTP server which is running a version of linux.Now I've got this ftp server connected to a seedbox and it was created using the following walk through..Code:I have written this guide for a friend, but I though it would be useful for others as well.
There are several guides floating around, but I found that most always cock up in some way. This one is tried and tested to work on Debian Etch (on an OVH rps, but should apply to most servers).If there is a new stable release of rtorrent/libtorrent then I will update this guide to show you how to update it (without reinstalling the whole server).
At the bottom there are also instructions to install ftp access & some network monitoring software.Basically, I would really like someone to be able to construct the commands on how to change the listen port for sftp connection on linux or add another port to the list that Linux would use so that I could put in through putty.
I just upgraded from a 1280x1024 17" to a 1920x1200 24".However, at 1920x1200, I do not have an option to change the refresh rate to anything but 60Hz, but Id like to run 70 or 75Hz.My monitor is an Asus PA246Q. Digital Signal Frequency : 30~83 KHz(H)/ 50~76 Hz(V).I am running Debian 6.Video card is an ATI Radeon 4850/1GB, and I am using the fglrx driver.
View 3 Replies View RelatedI have three monitors, two Dells and an older LG all native at 1920x1080@60Hz and only recently installed Debian on this setup.
The LG is detected as running at 59.93Hz instead of 60Hz and this discrepancy appears to drive up the temperatures in my GPU constantly, even on idle, and introduces severe stuttering in any kind of graphical application.
I had the exact same issue with Windows 7 as well, but was able to fix it by changing the display settings of said monitor to 60Hz refresh, thereby returning the idle temps to normal and removing the stuttering.
My problem now is that I can't seem to change the refresh rate of this screen at all under debian.
xrandr -q returns that the monitor is running at 59.93Hz, but also shows 60Hz as available.
xrandr --output DVI-I-1 --rate 60
appears to have absolutely no effect, it doesn't error but it also doesn't change the refresh rate.
Trying to add a new mode with 60hz and modeline obtained from cvt results in the following:
Code: Select allxrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr --addmode DVI-I-1 "1920x1080_60.00"X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 41
Current serial number in output stream: 42
I've also tried to set the refresh rate through the proprietary nvidia driver and manually through xorg.conf, both to no effect;
Here's my current xorg.conf:
Code: Select allSection "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
[Code] ....
The driver settings will show 60Hz but the listing for the monitor in the driver and xrandr will still show 59.93Hz. Saving the settings of nvidia-settings to .nvidia-settings-rc was equally fruitless.
The settings on the monitor itself also show it running at 60Hz, without an option to go down to 59.93Hz so I got no clue where that is even coming from.
What else to try, besides buying a new monitor, which I'm not quite prepared to do yet.
Are there audio player for Linux, that can play audio with some coefficient, that I can manually change, something like x0.5, x0.7, x0.79, 1.0 - normal, x1.5 etc...
View 2 Replies View RelatedAfter upgrading from karmic to lucid I can't change a default refresh rate for my crt monitor connected to my laptop (lcd switched off). I know radeon driver is trying to check what's the highest possible rate and sets it around 85, but the screen starts to "shiver". If I manualy change this setting in system settings for the screen to 75, it is ok. But I have to do this after every boot I generated xorg.conf and the appropriate modeline (it shows in the screen settings), and I added it to both monitor and screen section. Nevertheless the refresh rate is set to auto again in system settings and the screen wiggles a bit. How to disable automatic detection and force my own settings?
P.S Here's my xorg.conf:
Code:
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
[Code].....
I edited "sshd_config" file and changed port 22 to a new port. After I restart ssh, it listens on port 22 and the new port. How can I disable SSH to listen on port 22? I'm using Debian.
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View 1 Replies View RelatedI desperately want to get away from DOS and Windows, change to Linux... however I need 6400 baud for a special dongle. I found out my PC is working in Windows perfect at this baudrate, but in Linux it is unsupported.termios.h seems to have no support. I'm programming in C++ and want to use 6400 baud.
With setserial software I can have a divisor of 18, then the baudrate = 115200/18 = 6400. However, I want to use it in my programs (G++) and maybe also in Dosbox until my program is completely converted to Linux... however, if Linux does NOT support 6400 baud this operating system I have to stick to MFC, which is terrible.
i am trying to edit sshd_conf files to change the "#Port 22" to "Port 22" from a script.
I have tried this many different ways.
sshs1='s/#Port 22/Port 22/g'
sed $sshs1 /home/l/Desktop/test
the reason i have it as a string in this instance is because $sshs1 gets a variable, but im not working on that right yet. I've tried changing the ' to ` and ". this is what i get:
sed: -e expression #1, char 7: unterminated `s' command
sed: -e expression #1, char 8: extra characters after command
sed: -e expression #1, char 8: extra characters after command
"
sed: -e expression #1, char 7: unterminated `s' command
i know it may have to do with my regex, but i cant seem to find a decent tut.
How do i change the ssh port on my redhat 5 server. Can you tell me how to do it through the gui and through cmd line?
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Listen 80
to
Listen 85
It ditn't change any thing. 'netstat -tuapn | grep :85' returns nothing.
I go in using nano /etc/ssh/sshd_config I change the port number.. I then restart ssh service restart.. I then run netstat -tupln and it still shows ssh as port 22!i am not sure what I am doing that is incorrect.Do I have to remove the # < ? I go to redit it and its still showing 2222 nano /etc/ssh/sshd_config ?
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View 1 Replies View RelatedI am using Fedora 10 and I need to change the defaults that get set on the serial port.I know how to do what I need to in Windows, but I can't seem to figure it out in Linux.
Windows Settings:
Bits/Second '115200'
Data Bits '8'
Parity 'None'
Stop Bits '1'
Flow Control 'None'
Receive Buffer 14 (HIGH)
Transmit Buffer 16 (HIGH)
I am looking to set up a system that will bring in an e-mail on a port like 4082 then sent it out to a standard e-mail port. this is a fire wall issue. I am looking for the best software I can use on an Ubuntu-Desktop platform to accomplish this and an idea on how to set this up?
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