Programming :: UDP Error Unknow State - Fix It?
Sep 28, 2010
Well I got an strange error while I am programming. In fact, I am doing fast udp communication and testing the communication. In order to do it, I have done a program which test how many frame i manage to receive by changing the flow( between 800 Mb/s to 950Mb/s). The flow and number of Frame are defined in an other computer and every thing about that is alright.
While I am testing the number of Frame received 100 time, sometimes, I get 995 receveid et the next 1005 receveid instead of 1000. The delay for receiving frame lasts much more than the real delay.
So how could this error happen and how can I do for this error to not occur anymore?
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Aug 13, 2010
I installed Ubuntu 9.10 on an old PC, Dell dimension L550r, PIII500, 512M ram. There is a problem that monitor is not detected. I could logon as 'xterm' type, but the window size is only 1/4 of screen. When I logon as 'GNOME', it seems screen is not refreshed. media player window is blank, but can see a static image if minimize and restore window. Even terminal window is blank.
Go to "System"->"Preference"->"Display", shows "monitor unknown" I can not find file /etc/X11/xorg.conf, is this normal?
xrandr command output:
Screen 0: minimum 640x400, current 1024x768, maximum 1024x768
default connected 1024x768+0+0 0mm x0mm
1024x768 60.0* 75.0 70
832x624 75.0
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May 11, 2010
How can i check what operating system, i am running on, at run time?Moreover, how can i retrieve that current state of process?
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Oct 8, 2010
i want to get the state of a particular window by using the _NET_WM_STATE atom. i dont know how to use it with XGetProperty.
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Jun 30, 2011
After updating from 11.3 to 11.4 the networkmanager stopped working for me. When I hover over the KDE NetworkManager icon it says Error: Invalid state. If I click it, it says Network Management disabled and checkboxes (Enable networking and enable wireless - both checked). I already tried removing /var/lib/NetworkManager/NetworkManager.state and restarting the network management (/etc/init.d/network restart). Also reinstalling the NetworkManager package.
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Aug 8, 2010
Glib-Warning **:getpwuid_r(): failed due to unknow user id (0)
when you restart the following message appears : [URL]
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Jun 4, 2010
i got some mail starting in the last days with this content:
Code:
/etc/cron.daily/logrotate:
error: bad top line in state file /var/lib/logrotate/status
error: could not read state file, will not attempt to write into it
run-parts: /etc/cron.daily/logrotate exited with return code 1
/var/lib/logrotate/status
Code:
Package: binutils-static
Auto-Installed: 1
Package: linux-restricted-modules-common
Auto-Installed: 1
[code]...
i only installed packages via aptitude and did not modify anything logrotate related.
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Aug 20, 2011
hi, first i'd like to say that i'm totally new to linux, i was allways using windows.
as i was allways unable to install a good and stable ssh-server on windows, i thought it is time to change to linux. i was able to set up and configure a ssh-server on debian but found out, that fedora 15 looks more userfriendly in first place for me. but now i unfortunately experience problems..
the ssh server was already installed, i changed the service setting to that it starts automatically but after i succesfully connected to the LAN, i cannot access the shh via putty for instance. when i type "service sshd status" it says beside other things: active (running). but when i look at the /var/log/messages, it says those two lines:
sshd.service: main process exited, code=exited, status=255
Unit sshd.service entered failed state.
i searched on google without success, the only thing i found was that someone had the same problem with a bad sshd_config file, but i'm pretty sure that everything is alright with my config-file (i checked it several times).
beside this i cant login on the gui, after the firefox update (??) it always says: a problem has occured and the system can't recover bla bla... so i can only use fedora right now commandline-based.. but with this problem i will deal later on...
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Oct 26, 2010
I was trying to create a new saved state when suddenly Virtual Box broke, Upon starting it back up again I've gotten this error.
[code]...
What all this then?
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Mar 30, 2011
I have a server that I can only access via SSH (it's located far away) and I would like to secure it by blocking all ports except the ones that I need (which are HTTP and SSH). I still want to be able to make outgoing connections to enable software updates and other things.This is my iptables -L -n :
Code:
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpts:1:21
DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpts:23:79
DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpts:81:65535
code....
In my opinion, this should block all incoming packets except the ones on port 80 and 22, but allow responses to outgoing connections. But a wget http://google.com does not work, it can't establish the connection.
Maybe this is not the best style for iptables rules, but I want to be absolutely sure to not accidently lock myself out from SSH, so I chose not to configure a "block-everything rule".
Does this configuration not enable incoming packets from connections initiated from inside?
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Nov 29, 2010
I got a HP LH 3000.Current OS release is RH9 2.4.20,and I wanna update it to RH9 2.6.5 While updating,I met the problem followed:
VFS:Cannot open root device "hdxy" or unknow-block(0,0)
Followed are packages I used:
device-mapper-1.00.19-2.i386.rpm
linux-2.6.5.tar.bz2
mkinitrd-4.1.18-2.i386.rpm
lvm2-2.00.25-1.01.i386.rpm
module-init-tools-3.2.tar.bz2
First I installed the mkinitrd-4.1.18-2.i386.rpm, then compiled the kernel and installed it.
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May 20, 2010
i installed kernel 2.6.34 to fix my lid closing issue, and that went great. but now when i go to reinstall my broadcom i get this error. Code: Reading package lists... Done Building dependency tree Reading state information... Done bcmwl-kernel-source is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. 1 not fully installed or removed. After this operation, 0B of additional disk space will be used. Setting up bcmwl-kernel-source (5.60.48.36+bdcom-0ubuntu3) ... Removing old bcmwl-5.60.48.36+bdcom DKMS files...
[Code].....
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Nov 11, 2010
We make everyday a DB Mysql backup on Linux redhat Enterprise. We are using a bash shell script (and putting it in the crontab) to execute it automatically everyday. We added a line to this script telling, once the backup has completed, to find old backup files (stored on hard disk after each backup) older than x days to remove them. We use the find command (search for file type) with the mtime option and in combination with rm command. Everything runs ok but we also want to add some new code to the same line: If find command cannot find anything or fails, for example if it cannot delete file or fails, send the error message (standard error output) to an error file (like error000001 and increasing) and mail the errorxxxx file to an email address for example to admin@companyname.com. What would be the code for this issue to add it to our find command in the same bash shell script??
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Apr 12, 2011
how to rectify these errors..
RCC: Error in 'appchooser.qrc': Cannot find file 'accessories-dictionary.png'
RCC: Error in 'appchooser.qrc': Cannot find file 'akregator.png'
RCC: Error in 'appchooser.qrc': Cannot find file 'digikam.png'
RCC: Error in 'appchooser.qrc': Cannot find file 'k3b.png'
RCC: Warning: No resources in 'appchooser.qrc'.
and my .qrc file is like this
<!DOCTYPE RCC><RCC version="1.0">
<qresource>
<file>accessories-dictionary.png</file>
<file>akregator.png</file>
<file>digikam.png</file>
code....
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Jun 14, 2011
Parse error: syntax error, unexpected '@' in C:xampphtdocsminippromail.php on line 8 .......its not recognizing the '@' symbol. heres the code im working with
<?php $receiver = myfriend@ourmail.co.in; $subject = wish; $content = Hi! My dear friend how are you.; $sender = myself@ ourmail.co.in ; $headers = From: $sender; mail($receiver,$subject, $content,$headers); echo Mail has been sent successfully.; ?>
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Dec 29, 2010
i have Ubuntu10.10 (kernel-2.6.35-22-generic) installed. struct stat StatBuff;
[Code]...
I have mounted a windows share folder on /mnt. When i gave any directory within /mnt/ to stat function it fails with errorno 75. perror shows "Value too large for defined data type". Example 1 is fail but Example 2 works fine.
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Jun 16, 2010
I have installed it++ on suse11.2 I have downloaded an example project and everytime i try to "make"..error "/bin/sh: line 1: .dependencies: Permission denied" comes up.I have tried to run as root but this hangs on "checking dependencies" and gives no action.
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Jun 9, 2011
I am having a problem setting up an interface. the state does not seem to change to up and i don't even see any errors
#/etc/network/interfaces
# The Office LAN
auto bond0
iface bond0 inet static
[Code]....
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Jun 13, 2010
If I click on the battery icon and then click laptop battery nothing happens. Does anyone know the cause? Or even what program controls this so I can run it in a terminal and see what is going on?
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Jul 28, 2011
I've always used the network init service to manage my network interfaces on headless servers and used NetworkManager on desktop installs. Lately it seems that NetworkManger is becoming more and more integrated into network management even on servers. I have a RHEL6 server in my lab that runs NM without any Gnome components installed and I've noticed in Fedora NM becoming more tightly coupled with the system-config-network related services.
I'm asking because this is a "highly connected" server, with two redundant NICs on each of two different networks with a bond interface associating each pair for redundancy. Every time the server reboots it fails to configure its default route correctly. I know how to configure the network using the standard /etc/sysconfig/network and ifcfg-* scripts. Is NM fully integrated with these configuration files?
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Jun 5, 2011
My laptop keeps saying Checking battery state is that something to worry about? The laptop goes has a black screen on it saying Checking battery state then says ok.
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Jun 20, 2011
I dual boot both Windows and Linux and I often put my computer to "sleep" at night so it's easy to wake up the next morning. In Windows I just need to press a few keys and my computer comes to life, in Linux this doesn't happen and I have to actually go for the power button. (This wouldn't be so bad if the computer wasn't in a hard to reach place in a cupboard) At the moment I have a USB hub which my keyboard and mouse plug into, but for the sake of testing I plugged a second USB keyboard directly into the machine itself, again neither wake it. Doing a bit of research I have discovered that the wakeup devices are stored in /proc/acpi/wakeup The contents of the file by "cat" are as follows:
Code:
monotoko@KatieIV:~$ cat /proc/acpi/wakeup
DeviceS-state Status Sysfs node
PCE2 S4*disabled pci:0000:00:02.0
[code]...
At this point I have reached a dead end, how do I tell the acpi wakeup to accept input from USB keyboard as a kickstart?
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Jul 2, 2009
I am writing network module (LKM). I got process information by current->pid and current->comm. But now i want current state of task. I want to know the state of running the process. I dont find any information in struct task_struct structure. how can i get the state of current running process.
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Aug 21, 2010
I was looking into getting some solid state drives for the 1st time. I have always used Seagate traditional SATA drives for my home systems but I think I would like to try something new and that has much better performance. Do you guys know if I will see any performance gains and or issues using SSD on Linux? I run Arch and Debian Linux in general...
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Aug 3, 2015
I have accidentally changed the permission of "/usr/bin" directory and its files by the command on my Debian/testing system:
Code: Select all$chmod 775 /usr/bin -R
First, there was a problem with sudo but I fixed it. Now I am suspicious that some programs may not run because of changing their setuid or setgid. I have posted this question here and found out that there is no easy way to restore their setuid or setgid for Debian systems. For RPM based distributions, it is fairly easy. I would like to add a few questions:
Is it possible to write a script which stores all directories and files default permissions like RPM based distributions? And it restores its previous state. I suspect that some programs may not run from my user account (I only use the computer myself.) If I run the programs from my root account, will the programs run without problem?
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Apr 16, 2016
I use the stable version of Jessie.I think about migrate to the testing but actually only KDE is suit for meso I need to know whether a new version of this desktop is sufficiently stable or not.
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Oct 23, 2009
I tried to install KDevelop4, decided I didn't want to use it, and now I am having trouble getting KDevelop3 working again. The only steps to installing kdevelop4 were installing a new version of kdevplatform and then kdevelop itself. I did this:
1) sudo yum remove "kdevplatform* kdevelop*"
2) disable updates and testing repo
3) sudo yum install "kdevelop"
The problem is that there is something wrong with the menus (File, Edit, etc). There are many important items missing, as well as one of them says "No text!". This indicates that this is not the original packaged version with F11 because I used it for a year and it was certainly not like this. Is there a better way to get back to the original version than I showed here?
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Nov 25, 2009
I'm having trouble with my sound on my new Fedora 12 machine. when I first installed F12 sound was working but it appears that I have messed up some settings somewhere and now alsa is no longer recognizing my sound card (integrated into my ASUS M4A79XTD EVO motherboard)
Code:
$ aplay -l
aplay: device_list:223: no soundcards found...
I'm sure that when I tried to fix it I probably messed it up worse. Is there an easy way to restore all of my sound settings and audio Drivers back to the F12 defaults without losing everything else?
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Jun 9, 2011
Code:
I have just inserted a new battery. However, there is no settings that show the capacity and current charge time, etc.
When I click the battery icon. All I get is the current percentage.
Is there anything that will give me more details about my battery i.e. capacity, charge rate, time to full charge, etc?
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Aug 13, 2010
I got the impression after attending a LinuxCon session that Exchange 2007 support in Evolution was a solved problem in SUSE. Is the same true in openSUSE 11.3? What packages do I need to install to enable Exchange email/calendar/contact sync in Evolution? And does it depend on IMAP?
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