Arch Linux

sebaogal

Member

Registered: 2012-05-20

Posts: 7

[REOPENED] Wifi problem on Lenovo S205 laptop

Hi there, I have installed net Archlinux (last version up to date) and i experience wifi problems. When i was installing Arch with my usb stick it connected to wlan0 flawlessly, and when i had my laptop ready i didnt have problems. After that, i started installing some packages with pacman (gnome, vlc, gimp, gdm, wireless_tools, etc) and randomly i got with dhcpcd "waiting for carrier.... timed out" messages, but i didnt care because it occured just sometimes. I didn't need to blacklist anything, and sometimes i could connect without starting the 'network' daemon in rc.conf

With the time (the fresh installation is a week old aproximately) the wlan0 problems starting to bother me. dhcpcd didn't connect due to waiting for carrier messages, but sometimes it got right connection. I always make sure if the my home internet is having problems, but nothing, tried with my nokia phone, other laptops and it was very good.

In google i didn't find anything that helps me. I tried adding network to the daemons list, but nothing. Following the Arch wiki Wlan article didn't help. I blacklisted the following modules

# cat /etc/modprobe.d/blacklist.conf
blacklist rt61pci
blacklist rt2x00pci
blacklist rt2800usb
blacklist rt2800lib
blacklist rt2x00usb
blacklist rt2x00lib

That means i am just keeping rt2800pci loaded on the kernel. All that according with the wiki. Didn't work.

I experienced  problems with rfkill too when i installed gnome, but solved it already. "rfkill list" command says that anything is unblocked, so rfkill is discarded.

I should mention that hardware switch is activated, and i'm using just wireless_tools. Some outputs when i try to connect to my home (it doesnt have any key, just keeping things simple):

# ip link set wlan0 up
# iwconfig wlan0 essid "conexion_seba"
# dhcpcd wlan0 
dhcpcd[1195]: version 5.5.6 starting
dhcpcd[1195]: wlan0 waiting for carrier
dhcpcd[1195]: timed out

Sometimes i get this with the same access point:

# dhcpcd wlan0 
dhcpcd[1195]: version 5.5.6 starting
dhcpcd[1195]: wlan0 waiting for carrier
dhcpcd[1195]: timed out

I tried with other AP:

# ip link set wlan0 up
# iwconfig wlan0 essid "Internet_Juan" key 2125103411
# dhcpcd wlan0

and the same result. The key is right, so that wouldnt be the cause.

I tried too setting the wlan0 down and setting the channel to auto with iwconfig, setting the wlan0 up again and connecting, and the same message with dhcpcd...

Other commands that could be useful for troubleshooting

# uname -r
3.4.5-1-ARCH

# lspci | grep Network
03:00.0 Network Controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe

I would really appreciate any help, i have spent many days trying to fix it by myself but nothing
Sorry by my english haha, thanks on advance

Last edited by sebaogal (2012-07-23 19:24:27)

Gusar

Member

Registered: 2009-08-25

Posts: 3,607

Re: [REOPENED] Wifi problem on Lenovo S205 laptop

Don't blacklist the modules that end in lib, you need them. In fact, don't blacklist anything. The blacklisting stuff is from the times when the kernel had two drivers for Ralink wireless, but that hasn't been the case for a long time now.

lemons

Member

Registered: 2012-07-15

Posts: 19

Re: [REOPENED] Wifi problem on Lenovo S205 laptop

Try it with wicd-curses client

sebaogal

Member

Registered: 2012-05-20

Posts: 7

Re: [REOPENED] Wifi problem on Lenovo S205 laptop

I removed the blacklist file as Gusar said. Retried again, but what i did is disable the powermanagement feature with the following command:

# iwconfig wlan0 power off

After that, i got the same error, so i set wlan0 down and up again, dhcpcd wlan0 and voila! It connected. Maybe i will be having trouble again with this, but for now, i will mark this as solved.

Thank you both ^^

sebaogal

Member

Registered: 2012-05-20

Posts: 7

Re: [REOPENED] Wifi problem on Lenovo S205 laptop

Hi, i reopen this thread because im still experiencing problems with wlan. I'm writing this post with my Lenovo S205 because it get connected with "Internet_Juan" network, but that only after a lot of retries.

Can you help me please, the idea is to get an inmediate connection like in my phone or other laptops (even this one too with Windows)