Linux - Wireless NetworkingThis forum is for the discussion of wireless networking in Linux.
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This is the senario, i'll boot the computer, connection will be great for about..2 minutes then there goes the connect. This happens on any wifi network I connect on, doesn't matter if im in school, home, outside it always happens when connected to a wifi network. The problem is the connection and/or packets drop dramaticly almost down to 56k speeds and then eventually the card will totally disconnect and try to reconnect to the network again. Is there any way I can find out whats causing this?
( if it matters i'm using ubuntu 9.10, and this happens across all distros )
Ok, when you lose the connection, from root console do: "ifdown wlan0" (or wlan1) and after "ifup wlan0", and after "iwlist wlan0 scan". Will it show you AP?
Ok, when you lose the connection, from root console do: "ifdown wlan0" (or wlan1) and after "ifup wlan0", and after "iwlist wlan0 scan". Will it show you AP?
I'll try that when I get home( in class right now), well 90% of the time the card will stay connected to the network and totally lose speed before it disconnects, so the disconnecting from the networking doesn't happen as often as the slow speed problem.
OK, it is look like driver problem.
You can try "modprobe -r <driver name>" and then "modprobe <driver name>.
I have internal Broadcom Corporation BCM4311 and my driver name is "b43", additionally you can look into /var/log/messages and to /var/log/warn, may be there is something interesting your driver there.
OK, it is look like driver problem.
You can try "modprobe -r <driver name>" and then "modprobe <driver name>.
I have internal Broadcom Corporation BCM4311 and my driver name is "b43", additionally you can look into /var/log/messages and to /var/log/warn, may be there is something interesting your driver there.
Ok, when you lose the connection, from root console do: "ifdown wlan0" (or wlan1) and after "ifup wlan0", and after "iwlist wlan0 scan". Will it show you AP?
..."This is the senario, i'll boot the computer, connection will be great for about..2 minutes then there goes the connect. This happens on any wifi network I connect on, doesn't matter if im in school, home, outside it always happens when connected to a wifi network"...
Excuse me! Are you talking about ethernet or wireless card?
..."This is the senario, i'll boot the computer, connection will be great for about..2 minutes then there goes the connect. This happens on any wifi network I connect on, doesn't matter if im in school, home, outside it always happens when connected to a wifi network"...
Excuse me! Are you talking about ethernet or wireless card?
eth2 = ethernet, this is not wireless.
wlan0, wlan1 - wireless card.
Could you please, do under root "lspci".
Wireless card and yes this is whats weird about it to, here is the output of lspci
Code:
anthony@leonidas:/var/log$ sudo lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
00:01.0 PCI bridge: Hewlett-Packard Company Device 9602
00:04.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 0)
00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 1)
00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2)
00:07.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 3)
00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode]
00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a)
00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] HyperTransport Configuration (rev 40)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 11h [Turion X2, Athlon X2, Sempron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] Link Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics]
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
08:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
08:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller
08:00.3 System peripheral: JMicron Technology Corp. MS Host Controller
08:00.4 System peripheral: JMicron Technology Corp. xD Host Controller
09:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller (rev 01)
0a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
anthony@leonidas:/var/log$
now here is the output of iwconfig
Code:
anthony@leonidas:/var/log$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
eth2 IEEE 802.11 Nickname:""
Access Point: Not-Associated
Link Quality:5 Signal level:218 Noise level:162
Rx invalid nwid:0 invalid crypt:0 invalid misc:0
which is strange, now here is where it gets really odd
I would suggest keeping a terminal window open and occasionally running /usr/sbin/iwconfig to track your bitrate. I think your bitrate is being downgraded during times of interference and is never upgraded.
Do you use NetworkManager to manage your connection?
Do you use the "b43" driver? Edit: yes you do!
What is your kernel version?
For which wireless routers (that you know of) is this an issue? Which wireless router do you use at home?
I would suggest keeping a terminal window open and occasionally running /usr/sbin/iwconfig to track your bitrate. I think your bitrate is being downgraded during times of interference and is never upgraded.
Do you use NetworkManager to manage your connection?
Do you use the "b43" driver?
What is your kernel version?
For which wireless routers (that you know of) is this an issue? Which wireless router do you use at home?
Yea NetworkManager, nope, the driver thats in use is lib80211_crypt_tkip, wl, and the kernel is 2.6.31-14-generic, as for the router it really happens on any wireless router/network I connect to the one I mainly use at home is a d-link router ( wbr-2310 ) to be specific.
You know, my suggestion, Ubuntu 9.10 - is really is unstable and is not reliable. If NetworkManager called wireless interface eth2 - this mean they really mess things up.
Ubuntu has good forum on their server and suggest you to read what people say there and ask there. Because it is really UBUNTU problems.
Second, your wireless card can use 802.11n - so, may be to disable it.
Third, if ubuntu has called wireless eth2, may be it gave wrong configuration to wireless interface.
You know, my suggestion, Ubuntu 9.10 - is really is unstable and is not reliable. If NetworkManager called wireless interface eth2 - this mean they really mess things up.
Ubuntu has good forum on their server and suggest you to read what people say there and ask there. Because it is really UBUNTU problems.
Second, your wireless card can use 802.11n - so, may be to disable it.
Third, if ubuntu has called wireless eth2, may be it gave wrong configuration to wireless interface.
I also had a similar issue under Arch the wireless card kept switching between eth1 and eth0, it was a real pain, possibly the card is on its way out,any suggestion on a compatible usb adapter I could possibly buy?
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