Ubuntu Networking :: Wireless Crashes During NFS Transfer?
Oct 15, 2010
During NFS transfers my laptop crashes my entire wireless network. Laptop is a Samsung R20, Ubuntu 32-bit 10.04 with atheros AR5001 wifi and ath5k driver. What works: ->NFS is working. I have 3 other machines on wired connections that use NFS happily. And the NFS shares work fine if i plug the laptop into a wired connection. ->Wifi works. I can browse the internet and a large download (700MB) with bittorrent takes 8 mins and doesn't down the wireless.
What doesn't work: ->NFS and wireless together. Any NFS transfer over wireless eventually downs the wifi. Forl example streaming one 3mb mp3 in rhythmbox crashes wireless after playing for about 30 seconds. When the wireless fails it breaks for ALL computers and the only way to re=establish it is by restarting the router. Wired connections remain OK even when wireless is down (both from the same router).->I have a 64-bit desktop with wifi that also suffers the same problem but that doesn't matter so much since it also has a wired connection.
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Feb 3, 2010
I'm setting up a htpc system (Zotac IONITX-F based) based upon a minimal install of ubuntu 9.10, with no GUI other than xbmc. It's connected to my router (d-link dir-615) over a wifi connection configured for static IP (ath9k driver), with the following /etc/network/interfaces:
Code:
auto lo
iface lo inet loopback
# The primary network interface
#auto eth0
[code]....
Network is fine, samba share to the media direction works, until I try to upload a large file to it from my desktop system. Then it downloads a couple of percents at a really nice speed, but then it stalls and the box becomes unpingable (Destination Host Unreachable), even after canceling the transfer, requiring a restart of the network.
Same thing when I scp the file from my desktop system to the htpc, same thing when I ssh into the htpc, and scp the file from there. Occasionally (rarely) the file does pass through, but most of the time the problem repeats itself. Transfer of small text files causes no problems, and the same goes for the fanart downloads done by xbmc. I tried the solution proposed in this thread, and set mtu to 800 in the interfaces file, but the problem persists.
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May 30, 2010
I recently did a clean install of Ubuntu 10.04 and tried using a DLink DWL-G122 dongle for a wireless connection.
It seems to connect to the wireless router, but I cannot seem to access any websites using the wireless connection. Ethernet connections to the computer work perfectly, but ethernet isn't ideal.
The results of the lsusb command is code...
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Jul 2, 2011
Every time I download torrents in Ubuntu 11.04 on my desktop, using Transmission or Deluge clients, the wireless transfer speed abruptly drops off, becomes very choppy, and in general doesn't remain stable. It's not only the torrent download that slows down, but it's everything including web surfing, even though I'm not maxing out my connection speed. It's not that I'm getting disconnected from my router, it's just that the wireless transfer speed drops off, becomes intermittent, and never gets back up to full speed.
At first I thought that my ISP was throttling my connection, but this issue doesn't happen with a direct cable connection to my router, nor did it happen when I was running Ubuntu 10.04 before. It also doesn't happen when I'm downloading the exact same torrents over wireless using my netbook running Ubuntu Netbook Remix. This issue ONLY seems to happen when using a bittorrent client while on wireless on Ubuntu 11.04 on my desktop. I can max out my internet connection speed by streaming videos, downloading from FTP, etc. using wireless just fine, and the transfer speed remains stable. This also seems to happen with a couple of different wireless USB adapters (rt73usb or rtl8187 drivers).
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Jun 6, 2010
I have a problem that I can't seem to fix.When I try to transfer a large file lets say 700Mb or so my wireless shuts down and i have to restart my ubuntu computer the other computer is vista.ubuntu is on a wusb54gver4 and vista is going through a wrt54g tm running dd-wrt mega.I have tried every thing i know with no luck.
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Oct 22, 2010
I have an HP 311c netbook which was dual booted XP home and Ubuntu 10.04. Everything worked fine apart from the internal wireless modem (the only reason I needed XP as it worked under Windows) I then upgraded to 10.10 and that started my network problems.
I upgraded Ubuntu using terminal and update-manager, which went ok. The network was identified, but more often than not it now seems to crash the network (and seems to happen sporadically too) - seems to be at some stage whenever the netbook is on now. This then prevents all other PCs/Ipods from accessing the internet. The only way to recover is to reboot my wireless network and the internet modem (and shutdown the netbook).
I got so infuriated with it that I clean installed from a USB key I created, Wireless network runs fine with all other PCs and IP equipment
Network: Linksys 11 B
Internet modem Virgin Media
One strange thing that happened when I upgraded, but seems to have now disappeared, is that I managed to get it to identify and actually use the internal modem, although that 'Mobile Internet' option under Network Manager has now disappeared from the list, so I cannot activate it..
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Feb 22, 2010
I am using an HP dv6 series laptop. The wireless works fine in Ubuntu 9.10 (must install the Broadcom STA wireless driver). When I try to use Kubuntu 9.10 my computer crashes when I try to install the driver. Is there any particular reason why it works in one and not the other?
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Jan 19, 2009
I have a Mandriva linux box connected by cable to my router. When I stream audio using this box it crashes all the wireless computers on my network. There is no effect on wired computers. All but the one computer are windows (xp or vista). The affected wireless computers are not able to even find my wireless network. I have to reboot the router to get them online.
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Aug 14, 2011
how to transfer files from my mobile phone to my opensuse 11.4 pc via bluetooth? ntw i need to buy a bluetooth car or equivalent maybe is there something common, chip and easy to set up?
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Jan 11, 2010
I just bought a HP 3085dx laptop with an intel 5100 agn wireless card.
The problem: copying a big file over the wireless to a gigabit hardwired to the router computer only gives an average 3.5MB/Second transfer rate. If I do the same copy from my wireless-n macbook pro to the same computer. I get a transfer rate of about 11MB/sec. Why the big difference? I noticed the HP always connects to the 2.4 GHZ band instead of the 5GHZ bands...
On the HPL
[jerry@bigbox ~]$ ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:246:36:AC4
inet addr:192.168.1.75 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::224:d6ff:fe36:acc4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:639243 errors:0 dropped:0 overruns:0 frame:0
TX packets:1293049 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:53832795 (51.3 MiB) TX bytes:1888619922 (1.7 GiB)
[jerry@bigbox ~]$ iwconfig wlan0
wlan0 IEEE 802.11abgn ESSID:"<censored>"
Mode: Managed Frequency:2.412 GHz
Access Point: 00:24:36:A7:27:A3
Bit Rate=0 kb/s Tx-Power=15 dBm
Retry long limit: 7 RTS thr: off Fragment thr:off
Power Management: off
Link Quality=70/70 Signal level=-8 dBm Noise level=-87 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
I am not getting any errors. I don't know why the bit rate is not known. My airport extreme base station typically reports that the 'rate' for the hp is typically 250~300MBi and about the same for the MacBook Pro. The hp is about 6 inchs away from the base station. Is there anyway to get the rascal to go mo'faster? Is there anyway to get the rascal to use the 5GHZ band.
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Sep 11, 2011
I accidentally powered down in the middle of a session by removing the wrong battery from my laptop (a Motion Computing tablet), and ever since that happened knetworkmanager crashes with a segmentation fault on startup. I have uninstalled it and then reinstalled it from an openSuse 11.4 DVD I made a few months ago, but it still crashes on startup. Ifup says it connects to the wifi (Wayport Access @ McDonalds) I have available, but browsers don't reach the internet while Ifup is connected, so I can't sign on and get access to anything more recent. Is there some file I ought to delete,or some other software I ought to delete and reinstall?
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Jan 1, 2010
Having a bit of a issue with Debian Squeeze and transferring files to the Sony PSP..Hook up PSP to USB port and Debian mounts it..I go to drag a 125 meg mp4 to video folder..Copy windows takes about 10 seconds to transfer it..Exit USB mode and there is no video there. Go back into USB mode and look at video folder on the PSP memory stick and there is no video..It vanished. From another after copy progress closed I right clicked PSP and unmounted it..
It error-ed saying device was busy and could not unmount..Looking at light on PSP i see memory stick is still being written to..i wait for light to stop flashing..About a minute or so..Then am able to unmount it..Go to PSP video and theres the video ready to be watched. Debian isnt accurately showing the copy progress...Its showing complete when it isnt..I have to watch the light on PSP to know when it is truly finished.
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May 20, 2011
This problem started a few days ago. Whenever I attempt to connect to a wireless connection via network manager, my computer completely crashes, going to a black screen with no input from keyboard or mouse. It forces me to reboot using the power switch. Everything works fine when I connect to an ethernet cable, so I am sure it's a problem with my wireless driver.
I already tried (successfully) reinstalling the ath9k driver via compat wireless as was the advice from other forums, but this had no effect. I'm currently running opensuse 11.4, and haven't had this problem until a few days ago
This problem seems a bit ridiculous for a task as simple as connecting to a wireless network, so I'm convinced that either there is some sort of relatively simple way of fixing it, or windows really is the only decent operating system out there..
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Jun 12, 2010
when I try to transfer a folder from the desktop machine to laptop I get the following:
Code:
morad@linux-m9c6:~> cd /data/
morad@linux-m9c6:/data> scp -r nobani@192.168.1.3:/data/geant .
Password:
[Code]....
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Feb 14, 2011
I have been transferring files over the network. But I am sure It should be HEAPS faster than 8MB/sec
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Jul 26, 2011
Recently I had a situation where I had to transfer data from a PC to a Mac. Usually we simply convert the data as necessary, ie. bookmarks, contacts, etc. move the info to a dropbox account and use Windows networking to access the dropbox from a Mac. Well, there was a network issue and it was suggested that I boot to Ubuntu and do this. We do have Ubuntu on a flash drive but I was lost from there. Can anyone point me in the direction of documentation or assist me in understanding how this would be accomplished? I have a Mac, PC and Linux box at home so hopefully I have all the necessary tools to test this out.
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Jan 20, 2010
using Slackware 13.0, and whenever i trasfer my files to USB, like copy or cut and paste, it will show as if file transfered in an instant,like click paste and poof.the whole 1 gig file transferred in one second, and it wont show dialog box of transfer process, and then i have to predict some minutes and wait (till the transfer actually finishes, i have to usually see my USB's transfer indicator light), if i plug out before or my prediction goes wrong, i end up with corrupted files. This aint related to window manager, as same is case for KDE and XFCE tried thunar, konqueror, midnight commander, all of em resulted with same problem.
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Mar 28, 2010
A friend who switched ISP's gave me his old Linksys WRT54-G wireless router. I went through the installation procedure and had a wireless connection up and running - smiley face. I had security set up for WPA, and decided to upgrade it to WPA2. Another smiley face. When I went to connect (had already done so successfully), I noticed it referred to my wireless as Linksys - I was expecting to see the SSID. So I started playing around in Network Manager and now I have things all effed up.
Don't know exactly what I did, but now I have no wireless. So I ran a few commands (lshw -C network, iwconfig, ifconfig, and iwlist scan), and looking at the results I see what appear to be inconsistencies in the output. I've posted them below, and make the following observations:
1. Under the lshw it refers to my wireless connection logical name as wmaster0, and has the correct MAC address, etc.
2. Under the iwconfig it says, 'wmaster0 no wireless extensions', but then refers to wlan0 as the wireless connection (although it does not seem to be running).
3. Under ifconfig I see both a wlan0 and a wlan0:avahi. The wlan0 has no IP, the wlan0:avahi does, but it is incorrect.
[Code]...
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Dec 19, 2009
i just installed a new wireless device from encore electronics(802.11g Wireless PCI Adapter ENLWI-G2) but it deadlocks openSUSE 11.2 when i start the networking module in YaST. It also deadlocks(Freezes up) when i tried reinstalling suse. can someone help me, has anyone got this device to work? I also tried Fedora 12... it manages to see my wlan and posts the mac address of the card.. but it also locks up while trying to use it or configure it
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Mar 11, 2011
On my Lenovo T410 (openSUSE 11.4 KDE - 64bit) I have mobile broadband. Gobi-loader is installed and working properly. However when I try to setup mobile broadband connection the KDE Control Module crashes. Tried many times also after reboots, though KDE Control Module keeps crashing.
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Jan 11, 2010
I managed to ssh lan for file transfer but now i want to connect to ssh again for file transfer but from another city,not lan, What ip do i type in Host Ip? I mean,i can tell them to start the ssh server but then i need to type the external ip.
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Jan 13, 2010
I have a nokia n70 and currently i cant tarnsfer anything from mobile to my pc. i have setup my bluetooth device (usb) but everytime i try and send file from my mobile to pc, it says 'sending failed'. any solutions?
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Jul 8, 2010
When I try to copy a file from a shared folder of other laptop, the whole of data passes through the router.This affects the internet bandwidth within the network. Is there a way to access the shared files without necessarily going through the router and also without affecting the internet connectivity.
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Aug 30, 2010
I have ubuntu 10.04 on my netbook and all my files on my XP desktop. How can I connect the two so that I can transfer files from the XP machine to the Ubuntu netbook? Both have WiFi and ethernet. I am not fluent in windows networking but could manage to join two xp machines using an ethernet cable and naming the two with the same workgroup then setting a folder as shared!
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Oct 9, 2010
So i have a Vista desktop wirelessy connected to the router and a laptop running UNR 10.04. I used a Gigaware Cat5e crossover network cable to connect the desktop and laptop, and the lights light up orange so it's responsive i guess. I installed samba and can access my shared files on vista from my laptop but the transfer is 1mb/sec, i was hoping the crossover could help achieve something like 50mb/sec. Which is why i don't think i set it up right at all. How can I connect vista to ubuntu via crossover cables to transfer files?
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Jun 19, 2011
I just noticed that files are transferring between my two computers at no more than 11.3Mb/s no matter what I do.
I regularly use sshfs to mount a drive on my main computer. But after noticing a dismal speed of 10Mb/s when copying a file, I thought maybe sshfs is slow. So I tried scp, and I'm getting 11.3Mb/s with scp. Using the blowfish cypher gave me no change to this, still exactly 11.3Mb/s.
I have a Gigabit network except for the cable, which is a 10meter, 100Mb/s cable.
I have a custom modified sysctl.conf file which I'll post here if needed.
Is there anything I can do about this pathetic speed ? Maybe a modification to my ssh config ? sysctl ? anything ?
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Aug 1, 2011
I am trying to set up a computer so that I can remotely torrent files and then transfer the files to my PC while I am at college. I set up my computer so that it has a dynamic dns as well as hosting via DynDns. I have recently hit a wall when trying to find a way to transfer my files from the computer at home to my Windows 7 computer at school.
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Feb 13, 2011
I need to transfer some a large amount of file from my Linux lap-top to my desktop Windows machine. Can I connect the two computers through a simple crossover cable and simply navigate into the Windows machine and move to files manually or if not, what's the best way to do this? I don't want to burn a bunch of disks.
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Feb 7, 2010
I'm experiencing slow speed transfer between two wireless connected laptops running ubuntu 9.10. Using SSH to tranfer files between these two laptops, which connect to the internet via a wirelesss router, with good speed. This is why I'm surprised by this low speed : 52.3 KB/s, averaging 3 hours and 31 minutes for a 700 Mb movie. Is there any way to make this faster ?
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Feb 14, 2010
I've been using Ubuntu for about 2 years now, but still have trouble with some of the finer workings of linux. I have a laptop that I use for general computing, and a desktop hooked up to a TV as sort of a remote backup/htpc. A problem I run into is when I transfer files, they get transfered with the owner set as the original computer's account, and I can't do anything until I open a remote viewer and gksudo nautilus to change the permissions of the file. I looked at articles about permissions and uid's, gid's, and umask but can't figure out how to apply it to my situation.
I thought about doing something with groups but am not sure exactly what, and anyway, default group settings only give read access and what I'm really looking for is the ability to manipulate files and folders across the entire /home dir on my desktop from my laptop. Desktop is running 8.04 and laptop is running 9.10. BTW I am currently sharing through smbfs. I read that this has been replaced by cifs, but at the moment I would prefer not the mess with things if I don't need to.
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