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#1 2012-02-29 13:03:03

alanmc
Member
From: Richmond, VA
Registered: 2012-02-28
Posts: 6
Website

wifi on ASUS u56e with Intel Centrino Wireless-N and iwlwifi [solved]

Hello all,
I'm new to Arch Linux. Having used RedHat / Fedora and then most recently Ubuntu, I thought I'd try Arch for a truly custom install on my new Asus U56E with an Intel Centrino Wireless-N + WiMAX 6150 wireless card. It looks like Arch is loading the iwlwifi kernel module and loading some sort of firmware. I can scan for access points but it doesn't appear to associate them and then dhcp times out. Here are some of the details.

From dmesg,

[al@al-laptop ~]$ dmesg |grep iwl
[    6.346400] iwlwifi 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    6.346410] iwlwifi 0000:02:00.0: setting latency timer to 64
[    6.346464] iwlwifi 0000:02:00.0: pci_resource_len = 0x00002000
[    6.346466] iwlwifi 0000:02:00.0: pci_resource_base = ffffc90005934000
[    6.346467] iwlwifi 0000:02:00.0: HW Revision ID = 0x67
[    6.346556] iwlwifi 0000:02:00.0: irq 52 for MSI/MSI-X
[    6.346591] iwlwifi 0000:02:00.0: Detected Intel(R) Centrino(R) Wireless-N + WiMAX 6150 BGN, REV=0x84
[    6.346654] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[    6.357229] iwlwifi 0000:02:00.0: device EEPROM VER=0x557, CALIB=0x6
[    6.357231] iwlwifi 0000:02:00.0: Device SKU: 0X150
[    6.357233] iwlwifi 0000:02:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3
[    6.357243] iwlwifi 0000:02:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels
[    6.522266] iwlwifi 0000:02:00.0: loaded firmware version 41.28.5.1 build 33926
[    6.545443] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   13.660128] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[   13.660279] iwlwifi 0000:02:00.0: Radio type=0x1-0x2-0x0
[   13.814010] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[   13.814163] iwlwifi 0000:02:00.0: Radio type=0x1-0x2-0x0
[   21.690701] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[   21.690852] iwlwifi 0000:02:00.0: Radio type=0x1-0x2-0x0 

iwlist scan

[al@al-laptop ~]$ iwlist scan
lo        Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 00:1C:DF:D9:58:13
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=69/70  Signal level=-41 dBm  
                    Encryption key:off
                    ESSID:"MY_ESSID"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000432e41f034
                    Extra: Last beacon: 14430ms ago
                    IE: Unknown: 0007424F4F444C4553
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030106
                    IE: Unknown: 32040C183060
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD07000C4307000000

If I try to connect manually (not using wicd), I get something like this,

[al@al-laptop ~]$ sudo iwconfig wlan0 essid "MY_ESSID"
Password: 
[al@al-laptop ~]$ iwconfig wlan0
wlan0     IEEE 802.11bgn  ESSID:"MY_ESSID"  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
[al@al-laptop ~]$ sudo dhcpcd wlan0
dhcpcd[2260]: version 5.5.4 starting
dhcpcd[2260]: wlan0: waiting for carrier
dhcpcd[2260]: timed out

more from dmesg,

--snip-- [   32.730282] eth0: no IPv6 routers present
[   65.276403] fuse init (API version 7.17)
[ 2050.093359] wlan0: direct probe to 00:1c:df:d9:58:13 (try 1/3)
[ 2050.292192] wlan0: direct probe to 00:1c:df:d9:58:13 (try 2/3)
[ 2050.491927] wlan0: direct probe to 00:1c:df:d9:58:13 (try 3/3)
[ 2050.691673] wlan0: direct probe to 00:1c:df:d9:58:13 timed out
[ 2052.735699] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues

I've poured through the forums and Google for the past week and am really stuck. I have the linux-firmware package installed and the firmware lives at /lib/firmware
I even downloaded and copied the latest /lib/firmware/iwlwifi-6050-5.ucode from Intel.
I'm not sure of the mechanism that the kernel module uses to load which firmware. I'm really out of ideas. Any help will be greatly appreciated.
Al

Last edited by alanmc (2012-03-01 16:07:10)

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#2 2012-03-01 16:05:37

alanmc
Member
From: Richmond, VA
Registered: 2012-02-28
Posts: 6
Website

Re: wifi on ASUS u56e with Intel Centrino Wireless-N and iwlwifi [solved]

Here's what I found. Apparently there is some inerference from an attribute within the driver having to do with Bluetooth. My card does not have Bluetooth. You can reload it with the Bluetooth attribute forced off and check to see if the card will now associate wth an access point. I did this.

# modprobe -r iwlwifi
# modprobe -v iwlwifi bt_coex_active=0
Try to connect. If it works, create this file (if it doesn't already exist) /etc/modprobe.d/modprobe.conf
add this line to the file,

options iwlwifi bt_coex_active=0

reboot and voila

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#3 2012-03-11 22:13:07

made_in_nz
Member
From: Wellington, New Zealand
Registered: 2010-01-04
Posts: 53

Re: wifi on ASUS u56e with Intel Centrino Wireless-N and iwlwifi [solved]

Did you have any other issues with this laptop?  I am looking at buying it so I'm doing some research first. 

Thanks.

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#4 2012-03-12 04:30:45

alanmc
Member
From: Richmond, VA
Registered: 2012-02-28
Posts: 6
Website

Re: wifi on ASUS u56e with Intel Centrino Wireless-N and iwlwifi [solved]

Love the laptop! It was a great buy. Using networkmanager, works well.  It has the integrated graphics controler that uses the i915 kernel driver. Graphics are good. I don't do gaming so I don't know how it would measure up for that and I was unable to get compiz to work, although I did not spend a huge amount of time trying. I use it for web development. Did not spend alot of time on power control. Battery life is very good with the defaults. First time with arch linux. Very pleased at the granular control and wealth of community support.

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#5 2012-03-15 00:44:35

made_in_nz
Member
From: Wellington, New Zealand
Registered: 2010-01-04
Posts: 53

Re: wifi on ASUS u56e with Intel Centrino Wireless-N and iwlwifi [solved]

Thanks, I've bought the U56E and am setting it up now.  Everything is working well so far, although the usb 3.0 port is very touchy - if i slightly knock it the connection drops (most noticeable now I'm restoring from backup).

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