Weird Internet connection dell studio 1450

[agent_tech]

When 10.10 Ubuntu was released I tried to use it and everything works good to me aside of my internet connection.I have a network but I dont have internet.The weird thing is sometimes I have an internet but when I reboot my laptop, it lost again.So my option it to put my wired connection again.I googled it many times but im so unfortunate to find a solution. I read some articles that says my wireless hardware is not compatible with the installed kernel module.Then I decided to not use ubuntu and wait for the new version hoping that it would be compatible to my wireless hardware.Last week I tried to update to 11.04 but my problem is still the same.

I look on synaptic and I see that bcmwl-kernel-source and b43-fwcutter is properly installed. And it's on latest version.

My Laptop is DELL Studio 1450

My network connection is DHCP

Here is the specs of my wireless card:
02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe [14e4:1698] (rev 10)

I also run some commands in console and here is the result:

lsmod | grep "b44\|ssb\|wl"

iwlagn 333716 0
iwlcore 167502 1 iwlagn
mac80211 294370 2 iwlagn,iwlcore
cfg80211 178528 3 iwlagn,iwlcore,mac80211
wl 2568244 0
lib80211 14991 1 wl


ifconfig
eth0 Link encap:Ethernet HWaddr 00:$$:$$:$$:$$:$$
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:16

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:20 errors:0 dropped:0 overruns:0 frame:0
TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1200 (1.2 KB) TX bytes:1200 (1.2 KB)

wlan0 Link encap:Ethernet Waddr 00:$$:$$:$$:$$:$$
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: xxxx:xxxxxxxxx/xx Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:53 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1505 (1.5 KB) TX bytes:10828 (10.8 KB)

ping www.google.com (http://www.google.com)
ping: unknown host www.google.com (http://www.google.com)

ping 74.125.77.10
tooks 10 mins but it has no result

ping 192.168.0.1 -c3
-- 192.168.0.1 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2008ms

cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.1

cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
::1 jerome-Studio-1450 localhost6.localdomain6 localhost6
127.0.1.1 jerome-Studio-1450
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0

tail /etc/network/interfaces
auto lo
iface lo inet loopback

Is there any idea about this problem?
I hope somebody can help me. Thanks in advance!

[steve11911]

If this fails to satisfy please repost:
http://drivers.downloadatoz.com/tutorial/23012,fix-broadcom-wireless-problem-for-ubuntu-10-10.html

Make sure the wireless is turned on.

[steve11911]

If this fails to satisfy please repost:
http://drivers.downloadatoz.com/tutorial/23012,fix-broadcom-wireless-problem-for-ubuntu-10-10.html

Make sure the wireless is turned on.

[agent_tech]

Hi steve,

Thank you for quick response.As I look on the link you posted, the step is the solution Broadcom wirelesscard disabled in Ubuntu 10.10. This is not my problem. My wireless card is always enabled and I have a network. I can ping my router IP which is 192.168.1.1. The thing is I cannot connect to the internet. I read to some forums that this is DNS or DHCP problem(I'm not sure ) but I cannot too much understand since I don't have much knowledge in netwoking.

I hope it make sense.

FYI
I'm now in UBUNTU 11.04 and my wireless driver version is 5.100.82.38+bdcom-0ubuntu3

Thanks

[praseodym]

Strange things happen: "lsmod" shows two wireless modules/drivers, namely iwlagn and wl. But, "lspci" you used, only shows a wired device ("Ethernet").

Please show:


lspci -nnk | grep -iA2 net
lsusb
iwconfig
sudo iwlist scan
rfkill list

[agent_tech]

Yes it's absolutely strange. I know my drivers are properly installed because I have a network. I'm connect through DHCP and router sends its IP to my machine..I know I'm connect to the router because when I ping 192.168.1.1 there is a response.

I verified that router send DNS to my machine through this command


cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.1Here is the result of this following command

lspci -nnk | grep -iA2 net
lsusb
iwconfig
sudo iwlist scan
rfkill listlspci -nnk | grep -iA2 net

02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe [14e4:1698] (rev 10)
Subsystem: Dell Device [1028:02e8]
Kernel driver in use: tg3
--
06:00.0 Network controller [0280]: Intel Corporation WiFi Link 5100 [8086:4232]
Subsystem: Intel Corporation WiFi Link 5100 AGN [8086:1321]
Kernel driver in use: iwlagn

lsusb
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 005: ID 413c:8160 Dell Computer Corp.
Bus 004 Device 004: ID 413c:8162 Dell Computer Corp.
Bus 004 Device 003: ID 413c:8161 Dell Computer Corp.
Bus 004 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
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:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0c45:6408 Microdia
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:"WLAN-11g-GW"
Mode:Managed Frequency:2.412 GHz Access Point: 00:08:54:9B:CE:D7
Bit Rate=11 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-24 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:32 Missed beacon:0


sudo iwlist scan
lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

wlan0 Scan completed :
Cell 01 - Address: 00:08:54:9B:CE:D7
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=70/70 Signal level=-24 dBm
Encryption key:on
ESSID:"WLAN-11g-GW"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000001b1a1619b
Extra: Last beacon: 170ms ago
IE: Unknown: 000B574C414E2D3131672D4757
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK

rfkill list
0: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
1: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: no
Hard blocked: no


I hope this result will give an idea to you about my problem.Thanks!

[praseodym]

Unload and uninstall the wrong driver:


sudo modprobe -rf iwlagn wl
echo "options iwlagn 11n_disable=0" | sudo tee /etc/modprobe.d/iwlagn.conf
sudo modprobe -v iwlagn
sudo apt-get remove --purge bcmwl-kernel-source
sudo service network-manager restart
The second line activates the N-mode which is deactivated by default by Intel.

Check:


iwconfig
lsmod
dmesg | grep tail -n25
sudo iwlist scan

[agent_tech]

After I uninstalled the wrong driver and restarted the network I still don't have internet. I reboot my laptop the I still don't have internet yet. Then during I investigate the problem, I got an internet.So I noticed that I have to wait for 30min-1hr to get an internet after reboot. Why I cannot get an internet upon starting my laptop? This is really strange.

This is what I got after uninstalling the wrong driver:

iwconfig

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:"WLAN-11g-GW"
Mode:Managed Frequency:2.412 GHz Access Point: 00:08:54:9B:CE:D7
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-19 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:38 Missed beacon:0
lsmod

Module Size Used by
cryptd 20510 0
aes_x86_64 17208 2
aes_generic 38279 1 aes_x86_64
rfcomm 47694 8
binfmt_misc 17565 1
sco 18187 2
bnep 18308 2
l2cap 53570 16 rfcomm,bnep
parport_pc 36959 0
ppdev 17113 0
vesafb 13761 1
btusb 18600 2
bluetooth 72320 9 rfcomm,sco,bnep,l2cap,btusb
joydev 17606 0
snd_hda_codec_hdmi 28167 1
snd_hda_codec_realtek 336771 1
arc4 12529 2
snd_hda_intel 33176 2
snd_hda_codec 103804 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel
snd_hwdep 13604 1 snd_hda_codec
snd_pcm 96391 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13324 0
iwlagn 333716 0
snd_rawmidi 30486 1 snd_seq_midi
snd_seq_midi_event 14899 1 snd_seq_midi
dell_wmi 12681 0
snd_seq 61621 2 snd_seq_midi,snd_seq_midi_event
fglrx 2739144 101
sparse_keymap 13898 1 dell_wmi
iwlcore 167502 1 iwlagn
mac80211 294370 2 iwlagn,iwlcore
snd_timer 29602 2 snd_pcm,snd_seq
uvcvideo 72195 0
dell_laptop 13827 0
snd_seq_device 14462 3 snd_seq_midi,snd_rawmidi,snd_seq
dcdbas 14438 1 dell_laptop
videodev 82052 1 uvcvideo
v4l2_compat_ioctl32 17078 1 videodev
snd 67382 14 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,s nd_seq,snd_timer,snd_seq_device
cfg80211 178528 3 iwlagn,iwlcore,mac80211
psmouse 73535 0
serio_raw 13166 0
soundcore 12680 1 snd
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
lp 17825 0
video 19438 0
parport 46458 3 parport_pc,ppdev,lp
usbhid 46956 0
hid 91020 1 usbhid
ahci 25951 3
tg3 141750 0
libahci 26642 1 ahci
dmesg | grep tail -n25
no result

sudo iwlist scan

lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

wlan0 Scan completed :
Cell 01 - Address: 00:08:54:9B:CE:D7
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=70/70 Signal level=-20 dBm
Encryption key:on
ESSID:"WLAN-11g-GW"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000047f96419b
Extra: Last beacon: 140ms ago
IE: Unknown: 000B574C414E2D3131672D4757
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK

[praseodym]

Can you show


dmesg | greo iwl
iwconfig
rfkill list
cat /var/lib/NetworkManager/NetworkManager.state
if it is not working?

[steve11911]

Hhmmm...

If you can't fix it with a hammer...maybe it's broke.

I have been following this post with interest and remain confounded...Despite your excellent efforts the solution remains elusive. I have taken shovel in hand once more to find a fix but the ground is hard and there are only a few possibly helpful nuggets:

A Gen-too wiki page on a dell x16 with the same broadcam card-working fine-on a 2.6.28rc5 Kernel:

http://en.gentoo-wiki.com/wiki/Dell_Studio_XPS_16

I noticed that your specs showed the Intel Corporation WiFi Link 5100 with the Kernel driver iwlagn and found this page:

http://adeadhamster.blogspot.com/2010/10/linux-iwlagn-problems.html

From the mint forum:

http://forums.linuxmint.com/viewtopic.php?f=150&t=61755

Research also indicates this card has a troubled past...

[agent_tech]

Thanks guys for your interest in my problem. Your comments and suggestions are always appreciated.

http://en.gentoo-wiki.com/wiki/Dell_Studio_XPS_16
I think this link is under maintenance mode.
FYI my linux kernel version is 2.6.38-11-generic

http://adeadhamster.blogspot.com/2010/10/linux-iwlagn-problems.html
I tried this one but i think it's pretty much the same with praseodym instruction of uninstalling wrong driver. Unfortunately it also doesn't work.

http://forums.linuxmint.com/viewtopic.php?f=150&t=61755
And this last one is installing additional driver but when I opened it, the only driver that needed is for my graphic card.

I agree with you steve, that this card has a trouble in the past and compatibility with drivers. That's why I did not pursue a solution after I installed ubuntu 10.10 and it's not working. I just hoping with ubuntu 11.04 is already resolved.

Here is the result this command:

dmesg | grep iwl


[ 16.915110] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[ 16.915112] iwlagn: Copyright(c) 2003-2010 Intel Corporation
[ 16.915197] iwlagn 0000:06:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 16.915205] iwlagn 0000:06:00.0: setting latency timer to 64
[ 16.915234] iwlagn 0000:06:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54
[ 16.937032] iwlagn 0000:06:00.0: device EEPROM VER=0x11f, CALIB=0x4
[ 16.937034] iwlagn 0000:06:00.0: Device SKU: 0Xb
[ 16.937047] iwlagn 0000:06:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[ 16.937121] iwlagn 0000:06:00.0: irq 46 for MSI/MSI-X
[ 17.036029] iwlagn 0000:06:00.0: loaded firmware version 8.83.5.1 build 33692
[ 17.041511] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
iwconfig

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:"WLAN-11g-GW"
Mode:Managed Frequency:2.412 GHz Access Point: 00:08:54:9B:CE:D7
Bit Rate=5.5 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-27 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:31 Missed beacon:0
rfkill list

0: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
1: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: no
Hard blocked: no

cat /var/lib/NetworkManager/NetworkManager.state

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true

This is what I got when I cannot get response from ping command 'ping www.google.com (http://www.google.com)'. Then I repeat it again when I have an internet and there is no difference aside of this one:

iwconfig

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:"WLAN-11g-GW"
Mode:Managed Frequency:2.412 GHz Access Point: 00:08:54:9B:CE:D7
Bit Rate=24 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-27 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:31 Missed beacon:0

If you notice, the difference is the 'Bit Rate=24Mb/s'. Now I think I have an Internet at start but it's really slow. If the Bit Rate is less than 20Mb/s, I cannot get response from ping command. It takes 10-20mins to reach 20Mb/s or more.

I would say it's enough for me if it is sure that I have an Internet after 20mins. I just get a cup of coffee and when I came back, I can do my stuff. I'm also thinking it's a problem on my router but I borrowed my friend's router and the behaviour is the same.

I hope this make sense.

[agent_tech]

I got 54 Mb/s and I don't have Internet. I think bit rate is not an issue here. I was wrong yesterday. Any Idea guys?

iwconfig


lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:"WLAN-11g-GW"
Mode:Managed Frequency:2.412 GHz Access Point: 00:08:54:9B:CE:D7
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-27 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:31 Missed beacon:0