wired and wifi connection not working after upgrade to 11.04

**kirka_6551** · September 12th, 2011

Hello,
yesterday I upgraded the distribution from 10.10 to 11.04 and since then I have some strange problems.
Firstly, my wireless connection didn't work, the computer said, that I'm online, but I couldn't launch a single page with FireFox, skype or run another inet-app. Then I connected my laptop with the inet cable and after a restart I was online.However, today, as I started the laptop I couldn't get connect either with the cable, nor wireless. The strange thing was, that the icon on the left side always tells me, that I'm connected and I could chat with skype, but that was the only inet program working. FireFox always gives me a "problem loading page" error and the system tells me I have connection problems.
Thank you very much for your help!
Irina

**praseodym** · September 12th, 2011

Hello,

please show the following terminal outputs:

Code:

uname -a
lspci -nnk | grep -iA2 net
lsusb
lsmod
ifconfig -a
iwconfig
rfkill list
cat /var/lib/NetworkManager/NetworkManager.state
cat /etc/udev/rules.d/70-persistent-net.rules
sudo iwlist scan

**kirka_6551** · September 12th, 2011

Hello,
here are the terminal outputs

irina@irina-laptop:~$ uname -a

Linux irina-laptop 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:05:14 UTC 2011 i686 i686 i386 GNU/Linux

irina@irina-laptop:~$ lspci -nnk | grep -iA2 net

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)

Subsystem: Acer Incorporated [ALI] Device [1025:015b]

Kernel driver in use: r8169

--

03:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR5001 Wireless Network Adapter [168c:001c] (rev 01)

Subsystem: Foxconn International, Inc. Device [105b:e008]

Kernel driver in use: ath5k

irina@irina-laptop:~$ lsusb

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 001 Device 002: ID 064e:d101 Suyin Corp. Acer CrystalEye Webcam

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

irina@irina-laptop:~$ lsmod

Module Size Used by

cryptd 19801 0

aes_i586 16956 0

aes_generic 38023 1 aes_i586

ipt_MASQUERADE 12663 0

xt_state 12514 0

ipt_REJECT 12512 0

xt_tcpudp 12531 0

iptable_filter 12706 0

nf_nat_h323 12749 0

nf_conntrack_h323 52200 1 nf_nat_h323

nf_nat_pptp 12536 0

nf_conntrack_pptp 13562 1 nf_nat_pptp

nf_conntrack_proto_gre 13353 1 nf_conntrack_pptp

nf_nat_proto_gre 12671 1 nf_nat_pptp

nf_nat_tftp 12420 0

nf_conntrack_tftp 12817 1 nf_nat_tftp

nf_nat_sip 16922 0

nf_conntrack_sip 24652 1 nf_nat_sip

nf_nat_irc 12542 0

nf_conntrack_irc 13138 1 nf_nat_irc

nf_nat_ftp 12548 0

nf_conntrack_ftp 13106 1 nf_nat_ftp

iptable_nat 12977 0

nf_nat 24827 9 ipt_MASQUERADE,nf_nat_h323,nf_nat_pptp,nf_nat_prot o_gre,nf_nat_tftp,nf_nat_sip,nf_nat_irc,nf_nat_ftp ,iptable_nat

nf_conntrack_ipv4 19024 3 iptable_nat,nf_nat

nf_conntrack 69744 18 ipt_MASQUERADE,xt_state,nf_nat_h323,nf_conntrack_h 323,nf_nat_pptp,nf_conntrack_pptp,nf_conntrack_pro to_gre,nf_nat_tftp,nf_conntrack_tftp,nf_nat_sip,nf _conntrack_sip,nf_nat_irc,nf_conntrack_irc,nf_nat_ ftp,nf_conntrack_ftp,iptable_nat,nf_nat,nf_conntra ck_ipv4

nf_defrag_ipv4 12649 1 nf_conntrack_ipv4

ip_tables 18125 2 iptable_filter,iptable_nat

x_tables 21907 7 ipt_MASQUERADE,xt_state,ipt_REJECT,xt_tcpudp,iptab le_filter,iptable_nat,ip_tables

parport_pc 32111 0

ppdev 12849 0

snd_hda_codec_realtek 255882 1

snd_hda_intel 24113 2

arc4 12473 2

snd_hda_codec 90901 2 snd_hda_codec_realtek,snd_hda_intel

snd_hwdep 13274 1 snd_hda_codec

snd_pcm 80042 2 snd_hda_intel,snd_hda_codec

i915 451033 3

snd_seq_midi 13132 0

snd_rawmidi 25269 1 snd_seq_midi

ath5k 144534 0

joydev 17322 0

snd_seq_midi_event 14475 1 snd_seq_midi

binfmt_misc 13213 1

snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event

ath 19141 1 ath5k

mac80211 257001 1 ath5k

uvcvideo 66851 0

snd_timer 28659 2 snd_pcm,snd_seq

drm_kms_helper 40745 1 i915

snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq

acerhdf 14217 0

videodev 75143 1 uvcvideo

cfg80211 156212 3 ath5k,ath,mac80211

snd 55295 13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec, snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,sn d_seq_device

drm 184164 4 i915,drm_kms_helper

psmouse 73312 0

jmb38x_ms 17364 0

serio_raw 12990 0

memstick 15816 1 jmb38x_ms

i2c_algo_bit 13184 1 i915

video 18951 1 i915

soundcore 12600 1 snd

snd_page_alloc 14073 2 snd_hda_intel,snd_pcm

lp 13349 0

parport 36746 3 parport_pc,ppdev,lp

sdhci_pci 13623 0

sdhci 22720 1 sdhci_pci

r8169 42534 0

Module Size Used by

cryptd 19801 0

aes_i586 16956 0

aes_generic 38023 1 aes_i586

ipt_MASQUERADE 12663 0

xt_state 12514 0

ipt_REJECT 12512 0

xt_tcpudp 12531 0

iptable_filter 12706 0

nf_nat_h323 12749 0

nf_conntrack_h323 52200 1 nf_nat_h323

nf_nat_pptp 12536 0

nf_conntrack_pptp 13562 1 nf_nat_pptp

nf_conntrack_proto_gre 13353 1 nf_conntrack_pptp

nf_nat_proto_gre 12671 1 nf_nat_pptp

nf_nat_tftp 12420 0

nf_conntrack_tftp 12817 1 nf_nat_tftp

nf_nat_sip 16922 0

nf_conntrack_sip 24652 1 nf_nat_sip

nf_nat_irc 12542 0

nf_conntrack_irc 13138 1 nf_nat_irc

nf_nat_ftp 12548 0

nf_conntrack_ftp 13106 1 nf_nat_ftp

iptable_nat 12977 0

nf_nat 24827 9 ipt_MASQUERADE,nf_nat_h323,nf_nat_pptp,nf_nat_prot o_gre,nf_nat_tftp,nf_nat_sip,nf_nat_irc,nf_nat_ftp ,iptable_nat

nf_conntrack_ipv4 19024 3 iptable_nat,nf_nat

nf_conntrack 69744 18 ipt_MASQUERADE,xt_state,nf_nat_h323,nf_conntrack_h 323,nf_nat_pptp,nf_conntrack_pptp,nf_conntrack_pro to_gre,nf_nat_tftp,nf_conntrack_tftp,nf_nat_sip,nf _conntrack_sip,nf_nat_irc,nf_conntrack_irc,nf_nat_ ftp,nf_conntrack_ftp,iptable_nat,nf_nat,nf_conntra ck_ipv4

nf_defrag_ipv4 12649 1 nf_conntrack_ipv4

ip_tables 18125 2 iptable_filter,iptable_nat

x_tables 21907 7 ipt_MASQUERADE,xt_state,ipt_REJECT,xt_tcpudp,iptab le_filter,iptable_nat,ip_tables

parport_pc 32111 0

ppdev 12849 0

snd_hda_codec_realtek 255882 1

snd_hda_intel 24113 2

arc4 12473 2

snd_hda_codec 90901 2 snd_hda_codec_realtek,snd_hda_intel

snd_hwdep 13274 1 snd_hda_codec

snd_pcm 80042 2 snd_hda_intel,snd_hda_codec

i915 451033 3

snd_seq_midi 13132 0

snd_rawmidi 25269 1 snd_seq_midi

ath5k 144534 0

joydev 17322 0

snd_seq_midi_event 14475 1 snd_seq_midi

binfmt_misc 13213 1

snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event

ath 19141 1 ath5k

mac80211 257001 1 ath5k

uvcvideo 66851 0

snd_timer 28659 2 snd_pcm,snd_seq

drm_kms_helper 40745 1 i915

snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq

acerhdf 14217 0

videodev 75143 1 uvcvideo

cfg80211 156212 3 ath5k,ath,mac80211

snd 55295 13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec, snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,sn d_seq_device

drm 184164 4 i915,drm_kms_helper

psmouse 73312 0

jmb38x_ms 17364 0

serio_raw 12990 0

memstick 15816 1 jmb38x_ms

i2c_algo_bit 13184 1 i915

video 18951 1 i915

soundcore 12600 1 snd

snd_page_alloc 14073 2 snd_hda_intel,snd_pcm

lp 13349 0

parport 36746 3 parport_pc,ppdev,lp

sdhci_pci 13623 0

sdhci 22720 1 sdhci_pci

r8169 42534 0

irina@irina-laptop:~$ ifconfig -a

eth0 Link encap:Ethernet HWaddr 00:23:8b:74:8a:1d

inet addr:192.168.5.101 Bcast:192.168.5.255 Mask:255.255.255.0

inet6 addr: fe80::223:8bff:fe74:8a1d/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:22031 errors:0 dropped:0 overruns:0 frame:0

TX packets:12104 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:2242771 (2.2 MB) TX bytes:1655346 (1.6 MB)

Interrupt:44 Base address:0xc000

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:14940 errors:0 dropped:0 overruns:0 frame:0

TX packets:14940 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:1146821 (1.1 MB) TX bytes:1146821 (1.1 MB)

wlan0 Link encap:Ethernet HWaddr 00:24:2b:88:82:36

inet6 addr: fe80::224:2bff:fe88:8236/64 Scope:Link

UP BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:6 errors:0 dropped:0 overruns:0 frame:0

TX packets:194 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:912 (912.0 B) TX bytes:48405 (48.4 KB)

irina@irina-laptop:~$ iwconfig

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bg ESSID

ff/any

Mode:Ad-Hoc Frequency:2.412 GHz Cell: Not-Associated

Tx-Power=20 dBm

Retry long limit:7 RTS thr

ff Fragment thr

ff

Power Management

ff

irina@irina-laptop:~$ rfkill list

0: phy0: Wireless LAN

Soft blocked: no

Hard blocked: no

irina@irina-laptop:~$ cat /var/lib/NetworkManager/Networkmanager.state

cat: /var/lib/NetworkManager/Networkmanager.state: No such file or directory

irina@irina-laptop:~$ cat /var/lib/NetworkManager/NetworkManager.state

[main]

NetworkingEnabled=true

WirelessEnabled=true

WWANEnabled=true

irina@irina-laptop:~$ cat /etc/udev/rules.d/70-persistent-net.rules

# This file maintains persistent names for network interfaces.

# See udev(7) for syntax.

#

# Entries are automatically added by the 75-persistent-net-generator.rules

# file; however you are also free to add your own entries.

# PCI device 0x10ec:0x8136 (r8169)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:23:8b:74:8a:1d", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x168c:0x001c (ath5k)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:24:2b:88:82:36", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

# USB device 0x148f:0x2573 (usb)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1f:1f:06:91:22", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan1"

irina@irina-laptop:~$ sudo iwlist scan

[sudo] password for irina:

lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

wlan0 No scan results

Thank you for your replay!!!

**praseodym** · September 12th, 2011

Do you need the firewall with Ubuntu? Try:

Code:

sudo dhclient eth0
ifconfig eth0

Router-firmware is up-to-date? Checked the BIOS for those cards?

Checkbox all user rights in Users&Groups, remove your wired profile and reboot.

**praseodym** · September 12th, 2011

Oh, for wireless: You created an Ad-Hoc-network, means internet connection sharing. Remove the wireless profile and create a new one in "Infrastructure"-mode.