Why do I loose my lan and internet connection frequvently?

Måske it is the driver that is craching. What about going into the shell and apply command "ifconfig" after the connection is lost. Also use command "ping www.vg.no" Post output her.

Hello Langbein!

I did as you suggested, when the connection was lost.
I got:

[fredrik@linux_2 ~]$ su
Password:
[root@linux_2 fredrik]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1D:92:2E:EF:DF
          inet addr:192.168.1.35  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:23 errors:0 dropped:4294967286 overruns:0 frame:0
          TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6653 (6.4 KiB)  TX bytes:5335 (5.2 KiB)
          Interrupt:17 Base address:0xc000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:82 errors:0 dropped:0 overruns:0 frame:0
          TX packets:82 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:6442 (6.2 KiB)  TX bytes:6442 (6.2 KiB)

[root@linux_2 fredrik]# ping www.nu
ping: unknown host www.nu
[root@linux_2 fredrik]#     

I have alos tried to reserv the ip 192.168.1.35 in the router for this machnine, with out any improvement.

So if you see anything wrong, please let me know!
Best regards
Fredrik

Could be a dns resolving problem, or something like that.

Try this:

1. Ping 192.168.1.1 (If that is the gateway address.)
2. Ping 69.25.75.100
3. Ping www.nu

Post output here.

If 1 and 2 give answers while 3 does not it is a dns resolving problem.
If 1 gives answer while 2 and 3 does not, it is a routing problem.
If none of them gives an answer it is a hardware or a driver problem.

Har you tried to look in the syslog when this is happening?

Hello!

Thanks for the respons!

I tried what you suggested and this is the output (in su mode):

[root@linux_2 fredrik]# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
From 192.168.1.35 icmp_seq=2 Destination Host Unreachable
From 192.168.1.35 icmp_seq=3 Destination Host Unreachable
From 192.168.1.35 icmp_seq=4 Destination Host Unreachable

--- 192.168.1.1 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 15999ms
, pipe 3

[root@linux_2 fredrik]# ping 62.25.75.100
PING 62.25.75.100 (62.25.75.100) 56(84) bytes of data.
From 192.168.1.35 icmp_seq=2 Destination Host Unreachable
From 192.168.1.35 icmp_seq=3 Destination Host Unreachable
From 192.168.1.35 icmp_seq=4 Destination Host Unreachable

--- 62.25.75.100 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4999ms
, pipe 3

[root@linux_2 fredrik]# ping www.nu
ping: unknown host www.nu
[root@linux_2 fredrik]# 


I do not know if 1 and 2 counts as "answers". 3 mut be "no answer", is that correct?.

So if you could tell me from this what is the problem and how to solve it it would be great!

Btw wher do I find the syslog?

Best regards
Fredrik

Hm .. Non of the pings gives answers. Looks like that the driver has crached or the card has gone down in some way. Try to reset it.

First check with this command: ifconfig to see which cards you have.

If the card that you are using is eth0m then reset it:

ifconfig eth0 down

ifconfig eth0 up

Then try to get a new ip via dhcp client. Don't know which one Mandriva is using, but you can try: "dhcpcd" or "dhconf"

then run "ifconfig" again and post output here.

Hello!

Btw thanks for all help.

To day it was really stubborn  it will not cooperate at all.
After three  times I manage to start the KDE desktop. Before that I saw this in the startup.
Determing  io  information  for  eeth0...  faild

But now I'm in (this is  posted from an other computer).

How ever I  guess a "reset" of the networkcard is just a reboot of the the machine right?

ifconfig gave me alot unfortenately I can not get it over to this computer right now, but it looks to be the same as in my previous comment above.

I tried the ifconfig eth0 down, it looks like it get down since it is marked red.
I tried the ifconfig eth0 up, but it will not start again.
Also tried to enter the config panel and I can not connect it that way either.

I can not finnd out how to do, like in windows, ipconfig release and ipconfig renew in Mandriva.

But in config panel I got this set up:

Realtalk Semiconductor Co., Ltd RTL8111/8168B PCI Express Gigabit Ethernnet controller eth0.
I guess this is the type and brand?

Automatic IP (BOOTP/DHCP) = selected
Get DNS servers from DHCP = checked

under advanced:
DHCP client = dhclient (I ccan choose among: dhcpcd, pump, dhcpxd)
DHCP timeout (in seconds) = not set/ blank
Get YP servers from DHCP = checked
Get NTPD servers from DHCP = not checked
DBCP host name = not set/blank

Hope his give some clues. To me it do not unfortenately.
So if you see anything strange please let me know!
Best regards
Fredrik

Btw!
Is the DHCP host name the ip of the router?
/fredrik

Hello!

I upgraded to Mandriva 2009 = no more problem!

Best regards
Fredrik