Debian :: Intermittent Network Failure On Laptop

Oct 12, 2010

I'm having intermittent network failure on my laptop but I can't figure out why. I have a cable modem and a 10Mb/s (bits) connection (at least that's what I'm paying for). The modem is connected to a wireless router, to which my laptop connects wirelessly. Quite often my speed drops considerably-- sometimes as low as a few hundred bytes per second. Other times it fails completely. This will happen with just about any server you can imagine, including the Debian FTP mirrors in the US.

- When I do file transfers over the local network from my laptop to my desktop, they go pretty fast, around 2 MB/s. I believe my wireless card (Intel 3495) maxes out at 3 MB/s (bytes), so that seems reasonable.
- When I download a file from the outside network, it usually goes pretty fast too, around 1 MB/s, which is close to my limit.

So why is it that the connection between the laptop and the external network is so slow? I've tried power cycling, but it doesn't really help. I can't think of anything else to try.

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General :: Intermittent Serial Port Failure

May 16, 2011

I'm trying to solve an intermittant serial port problem on an embedded medical monitor. We have determined that the port is receiving characters from the external device but the serial thread is not transferring the chars from the buffer. this problem happens at start up about 1 in 50 boots. We're using kernal 2.6.29.6.

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Ubuntu Networking :: Refresh Network After Power Failure On Laptop?

Apr 24, 2010

have Karmic Coala runing on an IBM thinkpad X.41. Works great. My home network is all ethernet so I have a router , CAT5 cable to laptop.A coupleof times I've had power outages The laptop carries on as it's on battery power. When the power comes back , the router restarts, it reconnects after a few minutes but the laptop doesn't reconnect to the network seamlessly. On some other Linux distro's I've had running /etc/init.d/network restart will refresh everything. On Ubuntu I have /etc/init.d/networks but running restart In the end I needed to reboot the laptop to get the network back on.Perhaps this is a power management issue with the laptop ethernet card i.e losing power powers down the card and it never comes back up properly.

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Ubuntu :: Intermittent Copy Failure - Operation Not Supported By Backend

Feb 15, 2011

I have a system that has an intermittent issue with copying files. Below is the error that occurs. Error while copying "<filename>"
There was an error coping the file into network:///
Operation not support by backend

The user has Ubuntu 8.04. They are using the Nautilus window to copy files (drag and drop) from a CD/DVD or USB device. The directory they are copying onto is a RAID0 device with approximately 2T of space, and more than enough space to take the files. The permissions for the drive and folders are set to the user.

This occurs randomly and is very frustrating. We cannot duplicate it and when it does occur, it will happen once, then work fine. I've been checking forums and help files all over, but find nothing similar. The only stuff I find is if it's a new install and the permissions haven't been set correctly. Even a confirmation that someone else has seen this before.

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May 7, 2011

Sometimes my file share network stops working,and will then work again.I'm lost with this problem. The server pc is a Zenwalk pc.The other pc is a win7 pc. This error only occurs on Zenwalk. When i run puppy from the live cd the file shares are always visible,without fail.Under puppy i use pNethood. When the ping command is used there is no problem, and the pc name can be pinged.This is shown below:

[Code]...

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Jan 4, 2011

I have 10.10 installed and working OK. The Home directory is located on a second 1TB disk (sdb1). Recently, I've started to experience random boot failures where the start-up routine gets as far as showing the '10.10' logo with the progress dots underneath, but then throws up an error message saying that it cannot mount sdb1. I then have an option to Quit or drop into the shell to do a manual restart.

If I then do a Ctrl/Alt/Del, the system reboots, but usually fails again. Powering off and on, sometimes more than once, is the only way to eventually get a clean boot. The drive causing the problem is fairly new and all the diagnostic checks seem to indicate that it's healthy, so I'm not sure what causes the problem.

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Fedora :: Cannot Update Because Of Intermittent Network

Apr 1, 2010

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OpenSUSE Wireless :: Iwl3945 Intermittent Drops With Network Manager?

Jul 20, 2010

Installed openSUSE 11.3 over an existing 'very stable' 11.2 installation and started experiencing wireless connectivity issues immediately. Network Manager would show connected 100% - 92% but I would lose connectivity to mail, browser and messenger(s). This disconnect would last less than 30 secs but would occur every 2 to 4 minutes.

dmesg reported:

[ 3663.672098] iwl3945 0000:03:00.0: Failed to get channel info for channel 3 [1]
[ 3664.101085] iwl3945 0000:03:00.0: Failed to get channel info for channel 3 [1]
[ 3664.529050] iwl3945 0000:03:00.0: Failed to get channel info for channel 3 [1]

BTW Channel 3 is the channel my wifi is broadcasting on. I've tried other channels and other computers and it is only openSUSE 11.3 having an issue. I am also using WPA2. Modifying the Global Options in Network Settings from User Controlled with NetworkManager to Traditional Method with ifup seemed to stabilize most of the issues, but I do notice occasional drops. I've also switched from Network Manager to wicd to provide some UI while dealing with this issue. Since iwl3945 drivers are now in the kernel I don't know if I should try to revert to an older driver or if there is another issue.

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Jul 30, 2011

I am using FC 2, and I get 'eth0 failed' during startup.

I am configured for DHCP

device is 'inactive' under network device control after reboot

click 'activate', sometimes I can surf, others not.

When I can't get online, sometimes deactivating and reactivating works.

edited connection to 'activate device when computer starts'

eth0 still fails at start-up, and device is inactive.

I am supposed to use FC2 for my schoolwork

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Fedora Networking :: Network Connection Intermittent After DHCP Configuration - Stops Working Randomly

Jul 17, 2009

I'm having a bizarre problem where my network connection stops working randomly. At first I thought it was a DNS issue since Firefox simply chilled out on "Looking up [hostname]" until it timed out, but after further investigation (pinging IP's, "host" and "dig" being unable to reach servers) it became apparent that I couldn't even access the DNS servers i.e. the Wicked Connection of the East was most sincerely dead.

There are two strange things about this: one, there are no errors except "timeout". The network manager is happy, Firefox is happy until the lookup fails... Two, the failures only start *after* DHCP configuration. DHCP configuration never has any trouble sending or receiving packets. I'm going to try static IP and whatnot to see if that helps, more information later.

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Debian Installation :: Wheezy Network Install On Laptop No Keyboard Or Mouse?

Apr 19, 2011

anyway the reason for my posti downloaded a network install of wheezypartitioned and loaded wheezy on to a dell latitude d600now after installation the keyboard and mouse ( touchpad or nipple ) do not functionsince this inconvenience i have been plugging in a usb keyboard and mouse at the graphical login then using them to work the laptopAfter a reboot the usb peripherals do need to be uplugged and reconnected otherwise they also do not functioni am obviously missing something vital here but i am not sure where to start, kernel 2.6.38.2-686
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Debian Multimedia :: 7.7 (stable) System - Intermittent Crackly Sound In KDE

Dec 29, 2014

We recently installed KDE on our Debian 7.7 (stable) system. However, upon logging in, the piano roll was crackly and distorted; similar, if not identical to this [URL] .... problem. However, disabling HDMI output in PulseAudio Volume Control, as recommended in the "solution" in the above link did not fix the issue, and we do not think the other solution of updating the kernel is likely to be a solution, since audio is fine in GNOME. Because of this, it seems likely that the problem is with Phonon, KDE's sound layer.

Here is some of the info about the system:
- Dual-boot Debian 7.7/Windows Vista 64-bit
- AMD sound hardware
- Only analog stereo is used; HDMI is not
- AMD CPU and (integrated) GPU

This seems to be a problem about half the time. Also, sound tends to play better when being played the second time in a row, and adjusting the volume even slightly seems to have an immediate effect on improving the sound quality.

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Apr 7, 2010

My laptop died while installing F12, without completing installation. Now I can not boot the computer from HD, CD, or USB. I have flashed the BIOS with the most recent ROM. I can access the BIOS setup and exhausted all my options there, which is mainly boot order. At the moment, the boot process goes to a blinking cursor and does not allow for input. The laptop in question is a lenovo Y510 that was previously running F10 with a single partition.

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Nov 29, 2010

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Feb 16, 2010

I've been trying to understand how Linux creates the network/interfaces on a machine (been reading the Linux admin guide), but as I'm pretty new to this subject, I've got lost in the forest.

To provide with my goal:
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2.) Be able to maintain my own (virtual) network
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Jun 8, 2011

I am having a situation where I couldn't connect to Internet through wireless and LAN cable. I have done ifconfig, it only shows me "lo" info. May I know how can I bring up the LAN and wireless?

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Nov 24, 2008

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Mar 3, 2010

Have been running ubuntu for sometime now and love its functionality...However since a recent update have the following issues..When I power on the laptop I get the toshiba logo followed by grub loading with the message ' invalid enviroment block" "unable to load default boot entries". When I then try to run the laptop off a LiveCd, the ubuntu splash screen appears with the loading process bar (horizontal line) displayed..however it then appears to display a black screen with no further activity..Now all of this is via an external monitor as my laptop screen shows no activity right from the very start with just a blank screen....so am really stuck here wondering if its a harware/software issue or a combination of both...

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Aug 2, 2010

I just changed my power settings so that my laptop would hibernate when I closed the lid... but now KDE Network Manager has decided that it will not allow itself to be enabled. I can get my ethernet connection working through YAST... but I *really* need the wireless to work as well... so can somebody *please* tell me why KNM is being so stupid, and how I can fix it? EDIT: I just realized that I should have put this in the Network subforum...

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Aug 6, 2010

I ran into a problem that seems to be related to: [URL] with an HP Desktop. The desktop has a Intel 82567LM-3 on board gigabit ethernet adapter which on a fresh install of 11.3 would not operate properly. The e1000e driver was properly detected however on loading, the ethernet interface was never initialized. My solution was to get the latest e1000e driver from intel.com: Network Adapter Driver for PCI-E Gigabit Network Connections under Linux*

[Code].....

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Jan 12, 2011

I am running fedora 14 and have tried to setup VPN access to work. I used the simple networking GUI program. Another engineer at work uses ubuntu and that is how he accesses the VPN. I think that I did everything right but get this generic 'VPN connection failed' message. I am trying to connect to a monowall firewall and have the IP address. Yes, I have an account but am just trying it for the first time. I turned on all of the options available which seemed correct based on the instructions that I had. I have contacted my sys-admin to try to find out what the monowall doesn't like. However, I am wondering if I might need to open an outgoing port on my linksys home router/firewall and, if so, which one?

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I'm trying to integrate sendmail and openLDAP together. I've followed the guide in O'Reilly's LDAP book and my lookups are good. I think my problem is virtual users. What I'm trying to accomplish is that if an email is sent to joe@host.tld and there is an entry in LDAP for joe then it'll be accepted. Right now, it'll only accept emails only for system users. Below is my sendmail.mc (most comments removed)

Code:
divert(-1)dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for linux')dnl
OSTYPE(`linux')dnl
dnl ## I have a real one
define(`SMART_HOST', `my.smart.host')dnl
dnl #
define(`confDEF_USER_ID', ``8:12'')dnl

[Code]...

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Jul 26, 2010

OpenSUSE 11.1; kernel 2.6.31.12-0.2-default

Tried to configure via:
Zoom CD driver: 1.06_k2.6.22.17_01_default-1suse.i586.rpm
linuxant driver: dgcmodem-1.13_k2.6.31.5_0.1_pae-1suse.i586.rpm

[code]....

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Jan 13, 2010

I have two ubuntu boxes. One is a 9.04 desktop edition and the other is a 9.10 server edition I am working on some code that needs to be highly tolerant of bad network connections. It sends transactions to a central database, but when the network is not available, it caches them locally to retry later.

I have the code working beautifully on my desktop box. but when I test it on this other box (the one running server edition) there is a HUGE DELAY every time it tries and fails to send a transaction to the database when the network is down.

I tested a little further, and I found that if i unplug my network cable and run ping somehost on the desktop, it fails instantly saying "ping: unknown host somehost" But if I unplug the cable on the server box and run the same ping command it lingers for about 40 seconds before the ping fails.

Does anybody have any idea why this might be happening? Is this a 9.04 vs 9.10 difference? Is this a desktop vs server difference? Is there some package I can install, or some config setting I can change that will make the server box insta-fail just like the desktop does?

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I've been getting some odd behaviour that makes me suspect my HD might be on its last spins.

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2. Starting Debian's grub from the Fedora bootloader with chainloader failed
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Dec 2, 2014

This is a new install of debian 7.7 amd64 on the following new hardware

MSI A78M-E35
A6-6400 APU

Basically I am unable to get gnome 3 to run (it defaults back to some legacy ver). I tried a few other distros out there FC17 worked but FC20 failed. Just tried Debian Jesse it works after installing linux-firmware-nonfree but want to stick to a 'stable release'

dmesg says i need to install firmware-linux-nonfree so i did that but to no avail. Here is dmesg:

[ 0.203992] pnp 00:0d: [io 0x00a2-0x00bf]
[ 0.203992] pnp 00:0d: [io 0x00b1]
[ 0.203992] pnp 00:0d: [io 0x00e0-0x00ef]
[ 0.203992] pnp 00:0d: [io 0x04d0-0x04d1]
[ 0.203992] pnp 00:0d: [io 0x040b]
[ 0.203992] pnp 00:0d: [io 0x04d6]

[Code] ....

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Aug 8, 2011

I was hoping that someone could point me in the right direction. I just did an install and the os is up and running. During install, I set a root password and also set up a regular user account. The only option at login is the regular user acct. Needless to say, the os asks me to provide the root pw for just about everything I need to do.get an authentication failure. (I assume that this is the same as permission). I can find plenty of info on how to restrict access but nothing relevant to my problem. Just to rule out an install problem, I installed the os a 2nd time. I am very sure I have my passwords correct. One other thing to note is that on the 1st install, I used a different pw for root and regular user. On the 2nd, just to keep is as simple as possibl I used the same pw for root and reg user account. I am new to debian, but the distro that I have been using (slackware)

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Debian Configuration :: RAID1, Cannot Recovery After A Failure?

Aug 5, 2010

I'm a beginner + in debian (ie I know how to launch basic command under a shell), and I very new to configuration problem.I have a running perfectly file server for probably more than 2 years that I never touch. That's the debian problem, when it's unning, it's forever, no reboot at all.I recently bought 2 new sata drive 1TB5, that I add to my system by adding to my old system a SATA PCI board without any problem.But, one of these 3 month old drive is already dead.So I try to replace it and that's where problem started.....First I did a#mdadm --manage /dev/md1 --remove /dev/sdb1, of course without sucess because sdb is dead

#mdadm --detail /dev/md1
/dev/md1:
Version : 00.90.03

[code]...

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