Author Topic: Unstable network connection  (Read 1634 times)

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Offline Emegra

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Unstable network connection
« on: November 05, 2013, 09:57:27 pm »
Hi guys

I'm having problems with the wifes PC, the network has suddenly become very unstable, it will connect then soon after it will drop out and ask for the authentication key then connect again for a while before dropping out again, I've tried plugging in a a spare USB adaptor but that doesn't make any difference, this problem really began a couple of days ago when we lost our network connection completely and I had to reboot the router but even after doing that I also had to reboot both PC's before they would finally connect again my PC (Linux1) is fine but the wifes PC (lLnux2) is incredibly unstable.

Both PC's are running Peppermint 4

Code: [Select]
pat@Linux2 ~ $ lshw -c network
WARNING: you should run this program as super-user.
  *-network:0             
       description: Ethernet interface
       product: SiS900 PCI Fast Ethernet
       vendor: Silicon Integrated Systems [SiS]
       physical id: 4
       bus info: pci@0000:00:04.0
       logical name: eth0
       version: 91
       serial: 00:14:2a:ee:e9:24
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sis900 driverversion=v1.08.10 Apr. 2 2006 duplex=half latency=64 link=no maxlatency=11 mingnt=52 multicast=yes port=MII speed=10Mbit/s
       resources: irq:19 ioport:d000(size=256) memory:feafb000-feafbfff memory:feac0000-feadffff
  *-network:1
       description: Wireless interface

Any help would be much appreciated

many thanks


Graeme
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline Mark Greaves (PCNetSpec)

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Re: Unstable network connection
« Reply #1 on: November 05, 2013, 10:01:10 pm »
Is that ALL the output ?
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Offline Emegra

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Re: Unstable network connection
« Reply #2 on: November 05, 2013, 10:06:21 pm »
Sorry I didn't copy it properly  :-[

Code: [Select]
pat@Linux2 ~ $ lshw -c network
WARNING: you should run this program as super-user.
  *-network:0             
       description: Ethernet interface
       product: SiS900 PCI Fast Ethernet
       vendor: Silicon Integrated Systems [SiS]
       physical id: 4
       bus info: pci@0000:00:04.0
       logical name: eth0
       version: 91
       serial: 00:14:2a:ee:e9:24
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sis900 driverversion=v1.08.10 Apr. 2 2006 duplex=half latency=64 link=no maxlatency=11 mingnt=52 multicast=yes port=MII speed=10Mbit/s
       resources: irq:19 ioport:d000(size=256) memory:feafb000-feafbfff memory:feac0000-feadffff
  *-network:1
       description: Wireless interface
       product: RT3062 Wireless 802.11n 2T/2R
       vendor: Ralink corp.
       physical id: d
       bus info: pci@0000:00:0d.0
       logical name: wlan0
       version: 00
       serial: c8:3a:35:c5:2e:ec
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rt2800pci driverversion=3.8.0-32-generic firmware=0.34 latency=64 link=no maxlatency=4 mingnt=2 multicast=yes wireless=IEEE 802.11bgn
       resources: irq:18 memory:feae0000-feaeffff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
pat@Linux2 ~ $
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline Mark Greaves (PCNetSpec)

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Re: Unstable network connection
« Reply #3 on: November 05, 2013, 10:17:33 pm »
May sound daft, but before we go messing with drivers, have you tried just turning off /on the router ?

Also, has anything else changed, such as a large electrical appliance has been moved/added or the PC moved, etc.

[EDIT]

If it's a USB wireless adapter, can you post the output from:
Code: [Select]
lsusb

if not:
Code: [Select]
lspci -vnn | grep -i net

[EDIT 2]

Also post the output from:
Code: [Select]
iwconfig
and
Code: [Select]
sudo iwlist scanning
« Last Edit: November 05, 2013, 10:22:50 pm by Mark Greaves (PCNetSpec) »
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Offline Emegra

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Re: Unstable network connection
« Reply #4 on: November 05, 2013, 10:29:44 pm »
Ok I did as you suggested and rebooted the router AGAIN and it's looking good and seems stable meantime.

I'll let you know if it plays up again


Many thanks


Graeme
« Last Edit: November 08, 2013, 02:30:42 pm by Emegra »
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline chemicalfan

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Re: Unstable network connection
« Reply #5 on: November 05, 2013, 10:32:04 pm »
I used to have this problem with my old AA1, the drivers were flaky (back then, a couple of years ago now). Had to do a full reboot to get it back  :-\

Offline Emegra

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Re: Unstable network connection
« Reply #6 on: November 05, 2013, 10:42:00 pm »
I recently got a new Virgin Media Superhub which I'm finding is not so super, I can't tell you how often I have to reboot the damn thing I should have known better on this occasion but I had already rebooted before I reported the problem on here now it's making a fool of me.

before that I had an old Motorolla Surfboard cable modem with a Belkin wireless router and  I hardly ever had to reboot especially the modem that thing was indestructible wish I still had it
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline Mark Greaves (PCNetSpec)

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Re: Unstable network connection
« Reply #7 on: November 05, 2013, 11:46:36 pm »
Oh $%^& a (not so) Superhub .. turn it into a modem and get another wireless access point/router to plug into it.

I thought you'd already done that ?

[edit]

Best I can manage tonight .. celebrating a fortnight without a ciggy .. pretty p*ssed :)

--
« Last Edit: November 06, 2013, 12:09:41 am by Mark Greaves (PCNetSpec) »
WARNING: You are logged into reality as 'root'

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Offline Emegra

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Re: Unstable network connection
« Reply #8 on: November 06, 2013, 06:34:41 am »
Quote
Best I can manage tonight .. celebrating a fortnight without a ciggy .. pretty p*ssed

Congratulations Mark well done

keep it up


Graeme
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline chemicalfan

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Re: Unstable network connection
« Reply #9 on: November 06, 2013, 11:08:15 am »
Oh $%^& a (not so) Superhub .. turn it into a modem and get another wireless access point/router to plug into it.

I thought you'd already done that ?

This.

Those superhubs are appalling, and Virgin know it (their forum is full of "it'll be fixed with a firmware update" that never comes). How they can release such buggy hardware onto the masses is appalling.

Offline Mark Greaves (PCNetSpec)

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Re: Unstable network connection
« Reply #10 on: November 06, 2013, 01:13:09 pm »
Quote
Best I can manage tonight .. celebrating a fortnight without a ciggy .. pretty p*ssed

Congratulations Mark well done

keep it up


Graeme

OK, I'll go get some more alcohol then :)
WARNING: You are logged into reality as 'root'

logging in as 'insane' is the only safe option.

Offline Emegra

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Re: Unstable network connection
« Reply #11 on: November 06, 2013, 08:06:20 pm »
ok well lets makes sure you've cracked the nicotine thing first  then we'll work on the alcohol problem  ;D







Graeme
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline Emegra

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Re: Unstable network connection
« Reply #12 on: November 07, 2013, 11:04:40 pm »
Ok I thought I had this problem sorted but it's not only not sorted it's getting worse, I've tried all I know this evening but I'm getting nowhere, I thought I sorted it when I removed the PCI Wireless card and plugged in a USB adaptor and it seemed to work ok for a whilw then it just started dropping out again, also I've just been informed by the missus that she's not getting emails with Thunderbird I just tried it myself and sure enough cannot connect to server even though the network icon is showing connected

Code: [Select]
pat@Linux2 ~ $ lshw -c network
WARNING: you should run this program as super-user.
  *-network               
       description: Ethernet interface
       product: SiS900 PCI Fast Ethernet
       vendor: Silicon Integrated Systems [SiS]
       physical id: 4
       bus info: pci@0000:00:04.0
       logical name: eth0
       version: 91
       serial: 00:14:2a:ee:e9:24
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sis900 driverversion=v1.08.10 Apr. 2 2006 duplex=half latency=64 link=no maxlatency=11 mingnt=52 multicast=yes port=MII speed=10Mbit/s
       resources: irq:19 ioport:d000(size=256) memory:feafb000-feafbfff memory:feac0000-feadffff
  *-network
       description: Wireless interface
       physical id: 3
       bus info: usb@4:2
       logical name: wlan1
       serial: c8:3a:35:ca:0e:df
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rt2800usb driverversion=3.8.0-32-generic firmware=0.29 ip=192.168.2.3 link=yes multicast=yes wireless=IEEE 802.11bgn
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
pat@Linux2 ~ $



Many thanks



Graeme
« Last Edit: November 07, 2013, 11:18:55 pm by Emegra »
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

Offline Mark Greaves (PCNetSpec)

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Re: Unstable network connection
« Reply #13 on: November 08, 2013, 02:42:10 am »
OK, settle on a particular adapter and send the output I asked for earlier .. so I can get the device ID's to look for drivers, and get an idea if this is a signal strength issue.

We've been here before haven't we ?
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Offline Emegra

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Re: Unstable network connection
« Reply #14 on: November 08, 2013, 06:45:33 am »
Quote
We've been here before haven't we ?

Yes we have, same user, same physical location different PC

since the last time we went through this problem I got her another PC and since then the network/Internet has been rock solid until a few days ago when the whole network went down and I had to not only reboot the router but both PC's had to be rebooted as well, my PC (Linux1) & Chloes PC (Linux3) is fine but this PC (Linux2) hasn't been the same since

Code: [Select]
pat@Linux2 ~ $ lspci -vnn | grep -i net
00:04.0 Ethernet controller [0200]: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet [1039:0900] (rev 91)
00:0d.0 Network controller [0280]: Ralink corp. RT3062 Wireless 802.11n 2T/2R [1814:3062]
pat@Linux2 ~ $ iwconfig
wlan0     IEEE 802.11bgn  ESSID:"Network Emegra" 
          Mode:Managed  Frequency:2.437 GHz  Access Point: 74:44:01:FA:1A:B8   
          Bit Rate=120 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=43/70  Signal level=-67 dBm 
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:23  Invalid misc:443   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

pat@Linux2 ~ $ sudo iwlist scanning
[sudo] password for pat:
wlan0     Scan completed :
          Cell 01 - Address: 74:44:01:FA:1A:B8
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=41/70  Signal level=-69 dBm 
                    Encryption key:on
                    ESSID:"Network Emegra"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000007dc2e3ed9
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000E4E6574776F726B20456D65677261
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AFE181BFFFF000001000000000000000000000000000000000000
                    IE: Unknown: 3D1606051700000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD7E0050F204104A0001101044000102103B000103104700107D70BC53E951030A126C5E8F3C161C26102100074E657467656172102300074E6574676561721024000631323334353610420007303030303030311054000800060050F204000110110007564D4447343835100800022008103C0001011049000600372A000120
                    IE: Unknown: DD090010180206F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

pat@Linux2 ~ $

I've reverted back to the PCI card and at the moment it seems fine again but that's the nature of the problem it could start playing up at any time, I've ran broadband speed tests on all 3 PC's on the network and the results are as follows

Linux1                           Download: 27.77 mb/s   Upload: 2.63 mb/s

Linux2 (problem PC)     Download:  4.03 mb/s    Upload: 3.06 mb/s

Linux3                           Download: 24.52 mb/s   Upload:  2.67 mb/s
« Last Edit: November 08, 2013, 07:13:38 am by Emegra »
If you can keep your head while all around are losing theirs, then you're not quite grasping the situation

 


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