ubunty wifi: cant acquire IP address
in [Linux Networking]
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From: David on 22 Apr 2008 11:46 Running Ubuntu 8.04 (Hardy Heron) on a desktop PC using (or trying to) a Linksys WMP54G PCI wifi card (that uses a Broadcom BCM4306 chipset.) Trying to connect to a Netgear DG834 adsl router. It works using windows xp just fine. It doesn't in Ubuntu no matter what I seem to do, althugh it's fine using a wired connection. Tried latest "restricted" Broadcom drivers in Ubuntu and even compiled them myself to check. lspci gives: (cut version) 00:0f.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03) 00:11.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) From which I assume the card and drivers are okay???? But using wifi radar or wicd I can't establish an ip address. Now iwconfig says there is a card there but states encrypt is off , even though I have setup WEP with a password (to avoid WPA added complications at this time.) Also it seems to say RX is invalid??? Dont know what that means. Here it is: IEEE 802.11g ESSID:"sally000" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2346 B Encryption key:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 Also the PC is next to the wireless router (2 feet away) so is the signal level rather low? But it does work with XP as I said above.. Can ping the router using wired connection but not with wireless. The PC sees the MAC address of the router but the router doesn't see the wireless card. Have another wifi device (a usb asustek which uses rt73 drivers and although it connects intially it then disconnects and also seems to stop the wired connection to my other pc running xp, so I don't feel it's a viable option. Totally frustrated and out of ideas. All help appreciated. Cheers Dave
From: Ben Bacarisse on 22 Apr 2008 14:05 "David" <dave(a)antispam.invalid> writes: > Running Ubuntu 8.04 (Hardy Heron) on a desktop PC using (or trying to) a > Linksys WMP54G PCI wifi card (that uses a Broadcom BCM4306 chipset.) > Trying to connect to a Netgear DG834 adsl router. > It works using windows xp just fine. > It doesn't in Ubuntu no matter what I seem to do, althugh it's fine using a > wired connection. > > Tried latest "restricted" Broadcom drivers in Ubuntu and even compiled them > myself to check. > > lspci gives: > (cut version) > 00:0f.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless > LAN Controller (rev 03) > 00:11.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL-8139/8139C/8139C+ (rev 10) > From which I assume the card and drivers are okay???? Nope. They probably are OK, but you tell that by the fact the they have brought up an interface (see later). The above is taken from a table and just identifies the hardware. > But using wifi radar or wicd I can't establish an ip address. What happens if you try to let Ubuntu do it all itself? I.e. can't the network manager get you connected? > Now iwconfig says there is a card there but states encrypt is off , even > though I have setup WEP with a password (to avoid WPA added complications at > this time.) > Also it seems to say RX is invalid??? Dont know what that means. Rx is receive (as opposed to Tx -- transmit) so... > Here it is: > IEEE 802.11g ESSID:"sally000" > Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated > Tx-Power=27 dBm > Retry min limit:7 RTS thr:off Fragment thr=2346 B > Encryption key:off > Link Quality:0 Signal level:0 Noise level:0 > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 this says there have been 0 receive errors (none due to invalid nwid, none due to invalid frag, etc). > Tx excessive retries:0 Invalid misc:0 Missed beacon:0 > > Also the PC is next to the wireless router (2 feet away) so is the signal > level rather low? But it does work with XP as I said above.. Yes. It looks like either the driver does not report the signal strength (unlikely) or it is not really working. What does dmsg have to say about the driver. For example, I need the ipw2200 driver and I get: $ dmesg | grep ipw [ 7.682082] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmprq [ 7.682088] ipw2200: Copyright(c) 2003-2006 Intel Corporation [ 7.684676] ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection [ 5.223188] ipw2200: Detected geography ZZD (13 802.11bg channels, 0 802.11a channels) I do all this sort of stuff with WEP off to start with. From the bottom up you need: - The driver to find some hardware it understands. - The hardware to associate with the right AP - The interface to be given an address (often just by using DHCP). - The routing tables to be correctly set up - The right DNS server. If the hardware is working, I'd expect $ iwlist scan to show your AP. Does it? -- Ben.
From: Larry Finger on 22 Apr 2008 15:03 Ben Bacarisse wrote: > "David" <dave(a)antispam.invalid> writes: > >> Running Ubuntu 8.04 (Hardy Heron) on a desktop PC using (or trying to) a >> Linksys WMP54G PCI wifi card (that uses a Broadcom BCM4306 chipset.) >> Trying to connect to a Netgear DG834 adsl router. >> It works using windows xp just fine. >> It doesn't in Ubuntu no matter what I seem to do, althugh it's fine using a >> wired connection. >> >> Tried latest "restricted" Broadcom drivers in Ubuntu and even compiled them >> myself to check. >> >> lspci gives: >> (cut version) >> 00:0f.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless >> LAN Controller (rev 03) >> 00:11.0 Ethernet controller: Realtek Semiconductor Co., Ltd. >> RTL-8139/8139C/8139C+ (rev 10) >> From which I assume the card and drivers are okay???? > > Nope. They probably are OK, but you tell that by the fact the they > have brought up an interface (see later). The above is taken from a > table and just identifies the hardware. > >> But using wifi radar or wicd I can't establish an ip address. > > What happens if you try to let Ubuntu do it all itself? I.e. can't > the network manager get you connected? > >> Now iwconfig says there is a card there but states encrypt is off , even >> though I have setup WEP with a password (to avoid WPA added complications at >> this time.) >> Also it seems to say RX is invalid??? Dont know what that means. > > Rx is receive (as opposed to Tx -- transmit) so... > >> Here it is: >> IEEE 802.11g ESSID:"sally000" >> Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated >> Tx-Power=27 dBm >> Retry min limit:7 RTS thr:off Fragment thr=2346 B >> Encryption key:off >> Link Quality:0 Signal level:0 Noise level:0 >> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > > this says there have been 0 receive errors (none due to invalid nwid, > none due to invalid frag, etc). > >> Tx excessive retries:0 Invalid misc:0 Missed beacon:0 >> >> Also the PC is next to the wireless router (2 feet away) so is the signal >> level rather low? But it does work with XP as I said above.. > > Yes. It looks like either the driver does not report the signal > strength (unlikely) or it is not really working. What does dmsg have > to say about the driver. For example, I need the ipw2200 driver and I > get: > > $ dmesg | grep ipw > [ 7.682082] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmprq > [ 7.682088] ipw2200: Copyright(c) 2003-2006 Intel Corporation > [ 7.684676] ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection > [ 5.223188] ipw2200: Detected geography ZZD (13 802.11bg channels, 0 802.11a channels) > > I do all this sort of stuff with WEP off to start with. From the > bottom up you need: > > - The driver to find some hardware it understands. > - The hardware to associate with the right AP > - The interface to be given an address (often just by using DHCP). > - The routing tables to be correctly set up > - The right DNS server. > > If the hardware is working, I'd expect > > $ iwlist scan > > to show your AP. Does it? > What does the output of a 'dmesg' command have to say about your BCM4306? The lspci output only shows that the card is plugged in. Most of the useful stuff is in the system logs that you can access from dmesg (for the current boot) or from /var/log/messages (for the current boot and before). I guess that you will see messages about missing firmware. You did turn bcm43xx debugging on, or didn't you? Larry
From: David on 22 Apr 2008 15:13 "Ben Bacarisse" <ben.usenet(a)bsb.me.uk> wrote in message news:87od81epdn.fsf(a)bsb.me.uk... > "David" <dave(a)antispam.invalid> writes: > >> Running Ubuntu 8.04 (Hardy Heron) on a desktop PC using (or trying to) a >> Linksys WMP54G PCI wifi card (that uses a Broadcom BCM4306 chipset.) >> Trying to connect to a Netgear DG834 adsl router. >> It works using windows xp just fine. >> It doesn't in Ubuntu no matter what I seem to do, althugh it's fine using >> a >> wired connection. >> >> Tried latest "restricted" Broadcom drivers in Ubuntu and even compiled >> them >> myself to check. >> >> lspci gives: >> (cut version) >> 00:0f.0 Network controller: Broadcom Corporation BCM4306 802.11b/g >> Wireless >> LAN Controller (rev 03) >> 00:11.0 Ethernet controller: Realtek Semiconductor Co., Ltd. >> RTL-8139/8139C/8139C+ (rev 10) >> From which I assume the card and drivers are okay???? > > Nope. They probably are OK, but you tell that by the fact the they > have brought up an interface (see later). The above is taken from a > table and just identifies the hardware. > >> But using wifi radar or wicd I can't establish an ip address. > > What happens if you try to let Ubuntu do it all itself? I.e. can't > the network manager get you connected? > >> Now iwconfig says there is a card there but states encrypt is off , even >> though I have setup WEP with a password (to avoid WPA added complications >> at >> this time.) >> Also it seems to say RX is invalid??? Dont know what that means. > > Rx is receive (as opposed to Tx -- transmit) so... > >> Here it is: >> IEEE 802.11g ESSID:"sally000" >> Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated >> Tx-Power=27 dBm >> Retry min limit:7 RTS thr:off Fragment thr=2346 B >> Encryption key:off >> Link Quality:0 Signal level:0 Noise level:0 >> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > > this says there have been 0 receive errors (none due to invalid nwid, > none due to invalid frag, etc). > >> Tx excessive retries:0 Invalid misc:0 Missed beacon:0 >> >> Also the PC is next to the wireless router (2 feet away) so is the signal >> level rather low? But it does work with XP as I said above.. > > Yes. It looks like either the driver does not report the signal > strength (unlikely) or it is not really working. What does dmsg have > to say about the driver. For example, I need the ipw2200 driver and I > get: > > $ dmesg | grep ipw > [ 7.682082] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, > 1.2.2kmprq > [ 7.682088] ipw2200: Copyright(c) 2003-2006 Intel Corporation > [ 7.684676] ipw2200: Detected Intel PRO/Wireless 2200BG Network > Connection > [ 5.223188] ipw2200: Detected geography ZZD (13 802.11bg channels, 0 > 802.11a channels) > > I do all this sort of stuff with WEP off to start with. From the > bottom up you need: > > - The driver to find some hardware it understands. > - The hardware to associate with the right AP > - The interface to be given an address (often just by using DHCP). > - The routing tables to be correctly set up > - The right DNS server. > > If the hardware is working, I'd expect > > $ iwlist scan > > to show your AP. Does it? > > -- > Ben. Ben, Really appreciate your help. Answering your questions: 1.Just using net manager didn't help. Same "cant establish an IP" issue. 2.Yes I knew what rx and tx stand for but wasn't sure what this all meant. I guess no errors is because there isn't any comunication going on. 3.Tried dmesg | grep ipw with and without sudo but got no response, just threw me back to the prompt. 4.Have tried with and without WEP but no difference. 5.iwlist scan gives: -------------------- lo Interface doesn't support scanning. eth0 Interface doesn't support scanning. wmaster0 Interface doesn't support scanning. wlan0 Scan completed : Cell 01 - Address: 00:18:4D:49:2C:0E ESSID:"sally000" Mode:Master Channel:5 Frequency:2.432 GHz (Channel 5) Quality=81/100 Signal level=-45 dBm Noise level=-68 dBm Encryption key:on 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; 24 Mb/s; 36 Mb/s 48 Mb/s; 54 Mb/s Extra:tsf=00000005d64ca233 Cell 02 - Address: 00:01:38:8F:A8:8C ESSID:"zoom" Mode:Master Channel:10 Frequency:2.457 GHz (Channel 10) Quality=55/100 Signal level=-68 dBm Noise level=-68 dBm Encryption key:off 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; 24 Mb/s; 36 Mb/s 48 Mb/s; 54 Mb/s Extra:tsf=00000001225691da --------------------------- My wireless net SSID is sally000. The unprotected "zoom" is next door. I have told them about this before!! They are lucky it's me that's their neighbour! and not someone less scrupulous.! So iwlist doesn't seem to show my AP. I even reseated the PCI card, rebooted and did this all again. Then did a sudo iwconfig which gave: --------- lo no wireless extensions. eth0 no wireless extensions. wmaster0 no wireless extensions. wlan0 IEEE 802.11g ESSID:"sally000" Mode:Managed Frequency:2.432 GHz Access Point: 00:18:4D:49:2C:0E Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2346 B Encryption key:A7C3-E7FF-5E Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 -------- Note encryption now seems to be recognised. This is what I am uneasy about. How things seems to change back and forth. Flaky. In addition: I tried to connect using a static IP. Using wifi radar it said it had connected to the IP I had set up but when I disconnected the wired LAN cable I found the connection didn't work. As an aside must I unplug the network cable if I try to use wireless? Does this help you to help me. Just ask if you need more clues. Thanks again Dave
From: David on 22 Apr 2008 15:41
"David" <dave(a)antispam.invalid> wrote in message news:480e38b9$0$10643$fa0fcedb(a)news.zen.co.uk... > > "Ben Bacarisse" <ben.usenet(a)bsb.me.uk> wrote in message > news:87od81epdn.fsf(a)bsb.me.uk... >> "David" <dave(a)antispam.invalid> writes: >> >>> Running Ubuntu 8.04 (Hardy Heron) on a desktop PC using (or trying to) a >>> Linksys WMP54G PCI wifi card (that uses a Broadcom BCM4306 chipset.) >>> Trying to connect to a Netgear DG834 adsl router. >>> It works using windows xp just fine. >>> It doesn't in Ubuntu no matter what I seem to do, althugh it's fine >>> using a >>> wired connection. >>> >>> Tried latest "restricted" Broadcom drivers in Ubuntu and even compiled >>> them >>> myself to check. >>> >>> lspci gives: >>> (cut version) >>> 00:0f.0 Network controller: Broadcom Corporation BCM4306 802.11b/g >>> Wireless >>> LAN Controller (rev 03) >>> 00:11.0 Ethernet controller: Realtek Semiconductor Co., Ltd. >>> RTL-8139/8139C/8139C+ (rev 10) >>> From which I assume the card and drivers are okay???? >> >> Nope. They probably are OK, but you tell that by the fact the they >> have brought up an interface (see later). The above is taken from a >> table and just identifies the hardware. >> >>> But using wifi radar or wicd I can't establish an ip address. >> >> What happens if you try to let Ubuntu do it all itself? I.e. can't >> the network manager get you connected? >> >>> Now iwconfig says there is a card there but states encrypt is off , even >>> though I have setup WEP with a password (to avoid WPA added >>> complications at >>> this time.) >>> Also it seems to say RX is invalid??? Dont know what that means. >> >> Rx is receive (as opposed to Tx -- transmit) so... >> >>> Here it is: >>> IEEE 802.11g ESSID:"sally000" >>> Mode:Managed Frequency:2.412 GHz Access Point: >>> Not-Associated >>> Tx-Power=27 dBm >>> Retry min limit:7 RTS thr:off Fragment thr=2346 B >>> Encryption key:off >>> Link Quality:0 Signal level:0 Noise level:0 >>> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 >> >> this says there have been 0 receive errors (none due to invalid nwid, >> none due to invalid frag, etc). >> >>> Tx excessive retries:0 Invalid misc:0 Missed beacon:0 >>> >>> Also the PC is next to the wireless router (2 feet away) so is the >>> signal >>> level rather low? But it does work with XP as I said above.. >> >> Yes. It looks like either the driver does not report the signal >> strength (unlikely) or it is not really working. What does dmsg have >> to say about the driver. For example, I need the ipw2200 driver and I >> get: >> >> $ dmesg | grep ipw >> [ 7.682082] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, >> 1.2.2kmprq >> [ 7.682088] ipw2200: Copyright(c) 2003-2006 Intel Corporation >> [ 7.684676] ipw2200: Detected Intel PRO/Wireless 2200BG Network >> Connection >> [ 5.223188] ipw2200: Detected geography ZZD (13 802.11bg channels, 0 >> 802.11a channels) >> >> I do all this sort of stuff with WEP off to start with. From the >> bottom up you need: >> >> - The driver to find some hardware it understands. >> - The hardware to associate with the right AP >> - The interface to be given an address (often just by using DHCP). >> - The routing tables to be correctly set up >> - The right DNS server. >> >> If the hardware is working, I'd expect >> >> $ iwlist scan >> >> to show your AP. Does it? >> >> -- >> Ben. > > Ben, > Really appreciate your help. > Answering your questions: > 1.Just using net manager didn't help. Same "cant establish an IP" issue. > 2.Yes I knew what rx and tx stand for but wasn't sure what this all meant. > I guess no errors is because there isn't any comunication going on. > 3.Tried dmesg | grep ipw with and without sudo but got no response, just > threw me back to the prompt. > 4.Have tried with and without WEP but no difference. > 5.iwlist scan gives: > -------------------- > lo Interface doesn't support scanning. > > eth0 Interface doesn't support scanning. > > wmaster0 Interface doesn't support scanning. > > wlan0 Scan completed : > Cell 01 - Address: 00:18:4D:49:2C:0E > ESSID:"sally000" > Mode:Master > Channel:5 > Frequency:2.432 GHz (Channel 5) > Quality=81/100 Signal level=-45 dBm Noise level=-68 > dBm > Encryption key:on > 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; 24 Mb/s; 36 Mb/s > 48 Mb/s; 54 Mb/s > Extra:tsf=00000005d64ca233 > Cell 02 - Address: 00:01:38:8F:A8:8C > ESSID:"zoom" > Mode:Master > Channel:10 > Frequency:2.457 GHz (Channel 10) > Quality=55/100 Signal level=-68 dBm Noise level=-68 > dBm > Encryption key:off > 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; 24 Mb/s; 36 Mb/s > 48 Mb/s; 54 Mb/s > Extra:tsf=00000001225691da > > --------------------------- > My wireless net SSID is sally000. The unprotected "zoom" is next door. I > have told them about this before!! They are lucky it's me that's their > neighbour! and not someone less scrupulous.! > So iwlist doesn't seem to show my AP. > > I even reseated the PCI card, rebooted and did this all again. > Then did a sudo iwconfig which gave: > --------- > lo no wireless extensions. > > eth0 no wireless extensions. > > wmaster0 no wireless extensions. > > wlan0 IEEE 802.11g ESSID:"sally000" > Mode:Managed Frequency:2.432 GHz Access Point: > 00:18:4D:49:2C:0E > Tx-Power=27 dBm > Retry min limit:7 RTS thr:off Fragment thr=2346 B > Encryption key:A7C3-E7FF-5E > Link Quality:0 Signal level:0 Noise level:0 > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > Tx excessive retries:0 Invalid misc:0 Missed beacon:0 > -------- > > Note encryption now seems to be recognised. This is what I am uneasy > about. How things seems to change back and forth. Flaky. > > > In addition: I tried to connect using a static IP. Using wifi radar it > said it had connected to the IP I had set up but when I disconnected the > wired LAN cable I found the connection didn't work. > As an aside must I unplug the network cable if I try to use wireless? > > Does this help you to help me. Just ask if you need more clues. > Thanks again > Dave > > Think I was being stupid earlier on when I said didn't get anything from dmesg | grep iwp as I think that was your particular wireless board. Mine uses a broadcom 4306 and b43-fwcutter so i got a response when i used dmesg | grep b43 This is it: -------------------------- [ 54.575135] b43-phy0: Broadcom 4306 WLAN found [ 70.172030] input: b43-phy0 as /devices/virtual/input/input6 [ 72.206158] Registered led device: b43-phy0:tx [ 72.207040] Registered led device: b43-phy0:rx [ 72.207678] Registered led device: b43-phy0:radio [ 77.695944] input: b43-phy0 as /devices/virtual/input/input7 [ 80.038241] Registered led device: b43-phy0:tx [ 80.038761] Registered led device: b43-phy0:rx [ 80.039016] Registered led device: b43-phy0:radio ------------------ Doesn't say anything to me but you experts will no doubt hopefully see the light. Cheers |