View Full Version : [SOLVED] Ubuntu cannot find my network after disconnect
dimitars
November 3rd, 2012, 03:33 AM
Hey guys. Let me try to explain the problem.
Whenever my laptop shuts down because of battery, or if we loose power, of the router is restarted for some reason, my laptop cannot find my wireless. It finds other wireless networks just fine, but mine it can not.
I have d-link router(I don't think it is router's fault cause on windows it works just fine for me and 3 other roommates).
I have:
01:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
02:00.0 Network controller [0280]: Broadcom Corporation BCM43225 802.11b/g/n [14e4:4357] (rev 01)
Till today(since 11.10) I was able to fix this somehow with several repeats of : Disable Network then Enable Network.. sometimes restart and it was somehow working aggain.
But today I can't. I spent 2 hours doing that and restarts, and iwlist scanning and just can't find my network(which still works just fine on windows machines).
I have Broadcom STA proprietary driver activated.
Please help me fix this problem. 2 years I've been dealing with this.
gerowen
November 3rd, 2012, 03:37 AM
Have you tried using a different program to connect to it like Wifi Radar? You could also try deleting the network profile for your wireless and reconnecting as if it's the first time again.
dimitars
November 3rd, 2012, 03:42 AM
Have you tried using a different program to connect to it like Wifi Radar? You could also try deleting the network profile for your wireless and reconnecting as if it's the first time again.
Ah i forgot to mention, i tried both of those things.
Although for radar i knew it wouldn't work because iwlist scan wasn't showing my network either.
Hadaka
November 3rd, 2012, 03:57 AM
Hi, please post the output of...
lsmod | grep -E 'brcmsmac|bcma'
grep 'blacklist' /etc/modprobe.d/blacklist.conf thanks
dimitars
November 3rd, 2012, 04:02 AM
Here it is:
deemeetar@deemeetar:~$ grep 'blacklist' /etc/modprobe.d/blacklist.conf
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
deemeetar@deemeetar:~$ lsmod | grep -E 'brcmsmac|bcma'
deemeetar@deemeetar:~$
Hadaka
November 3rd, 2012, 04:14 AM
ok, nothing jumping out there, please post..
lspci -nnk | grep -A4 Wireless
cat /etc/modules
dimitars
November 3rd, 2012, 04:22 AM
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
lp
The other one is empty.
Looks like nothing here too :(
Hadaka
November 3rd, 2012, 04:27 AM
exactly..and there should be..
but first..you forgot to post..
lspci -nnk | grep -A4 Wireless
dimitars
November 3rd, 2012, 04:37 AM
It doesn't print anything.
Hadaka
November 3rd, 2012, 04:38 AM
empty?..thats your wireless card lspci dump..hmmm
try this
lspci -nnk |grep -iA5 net
Hadaka
November 3rd, 2012, 04:42 AM
ok...well, you have the sta driver/...correct?
dimitars
November 3rd, 2012, 04:44 AM
Yes i have STA driver.
Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
Subsystem: Acer Incorporated [ALI] Device [1025:036d]
Kernel driver in use: tg3
Kernel modules: tg3
02:00.0 Network controller [0280]: Broadcom Corporation BCM43225 802.11b/g/n [14e4:4357] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:04da]
Kernel driver in use: wl
Kernel modules: wl, bcma, brcmsmac
ff:00.0 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers [8086:2c62] (rev 02)
Subsystem: Acer Incorporated [ALI] Device [1025:036d]
Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
Subsystem: Acer Incorporated [ALI] Device [1025:036d]
Kernel driver in use: tg3
Kernel modules: tg3
02:00.0 Network controller [0280]: Broadcom Corporation BCM43225 802.11b/g/n [14e4:4357] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:04da]
Kernel driver in use: wl
Kernel modules: wl, bcma, brcmsmac
ff:00.0 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers [8086:2c62] (rev 02)
Subsystem: Acer Incorporated [ALI] Device [1025:036d]
This one gives results
Hadaka
November 3rd, 2012, 04:49 AM
whew...thanks, this should fix you up.
sudo echo 'wl' >> /etc/modules
this will load your diver on start up, so run the command
boot, let the computer connect to your router, then go yank
the power from the router ...plug it back...find the cable connection
and the computer should reconnect to YOUR ssid. please let me know
if this worked for you
thank
Hadaka
November 3rd, 2012, 04:59 AM
Looks like you also need to toss a couple items into the blacklist pool
echo "blacklist brcmsmac" | sudo tee -a /etc/modprobe.d/blacklist.conf
echo "blacklist bcma" | sudo tee -a /etc/modprobe.d/blacklist.conf
that should help.
dimitars
November 3rd, 2012, 05:09 AM
Yay it worked.
Though i haven't done the blacklist thing. Should i do it now that the first thing worked?
Btw finally after 2 years i have normal wifi.
Thank you a lot!
Hadaka
November 3rd, 2012, 05:12 AM
Great! yes..do the blacklist thing...test it the same way with the
power reset...come back..to let me know how it went and to mark the
thread SOLVED
dimitars
November 3rd, 2012, 05:18 AM
Works well again.
Thank you so much!
Hadaka
November 3rd, 2012, 05:23 AM
great..glad all is well, please dont forget to use...thread tools
and mark this solved
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