Arch Linux

vmat

Member

Registered: 2011-10-10

Posts: 25

Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

After upgrading to linux-3.1.5 (and 3.1.6) wireless stops working.
Here is the dmesg output:

[   15.319901] iwlagn 0000:04:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[   15.319930] iwlagn 0000:04:00.0: setting latency timer to 64
[   15.319988] iwlagn 0000:04:00.0: pci_resource_len = 0x00002000
[   15.319990] iwlagn 0000:04:00.0: pci_resource_base = ffffc90000654000
[   15.321850] iwlagn 0000:04:00.0: HW Revision ID = 0x0
[   15.321968] iwlagn 0000:04:00.0: irq 48 for MSI/MSI-X
[   15.322056] iwlagn 0000:04:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54
[   15.322161] iwlagn 0000:04:00.0: L1 Enabled; Disabling L0S
[   15.352891] iwlagn 0000:04:00.0: device EEPROM VER=0x11e, CALIB=0x4
[   15.352894] iwlagn 0000:04:00.0: Device SKU: 0Xf0
[   15.352904] iwlagn 0000:04:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[   15.355087] iwlagn 0000:04:00.0: loaded firmware version 8.83.5.1 build 33692
[   15.394558] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   18.803574] iwlagn 0000:04:00.0: L1 Enabled; Disabling L0S
[   18.806980] iwlagn 0000:04:00.0: Radio type=0x1-0x2-0x0
[   18.934500] iwlagn 0000:04:00.0: L1 Enabled; Disabling L0S
[   18.937819] iwlagn 0000:04:00.0: Radio type=0x1-0x2-0x0
[   18.998895] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   21.015103] iwlagn 0000:04:00.0: L1 Enabled; Disabling L0S
[   21.018428] iwlagn 0000:04:00.0: Radio type=0x1-0x2-0x0
[   21.079955] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   26.259417] wlan0: authenticate with 00:24:01:f3:5b:e0 (try 1)
[   26.261813] wlan0: authenticated
[   26.266418] wlan0: waiting for beacon from 00:24:01:f3:5b:e0
[   26.314402] wlan0: beacon received
[   26.353423] wlan0: associate with 00:24:01:f3:5b:e0 (try 1)
[   26.358152] wlan0: RX AssocResp from 00:24:01:f3:5b:e0 (capab=0x431 status=0 aid=1)
[   26.358156] wlan0: associated
[   26.363857] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   30.860594] EXT4-fs (sda5): re-mounted. Opts: commit=0
[   30.999063] EXT4-fs (sda6): re-mounted. Opts: commit=0
[   31.001007] EXT4-fs (sda8): re-mounted. Opts: commit=0
[   36.364377] wlan0: disassociating from 00:24:01:f3:5b:e0 by local choice (reason=3)
[   36.398016] cfg80211: Calling CRDA to update world regulatory domain                                                                                                             
[   36.398148] wlan0: deauthenticating from 00:24:01:f3:5b:e0 by local choice (reason=3)                                                                                            
[   36.763419] wlan0: no IPv6 routers present  

rc.conf:

NETWORKS=(home)
WIRED_INTERFACE=eth0
WIRELESS_INTERFACE=wlan0

/etc/network.d/home:

CONNECTION='wireless'
DESCRIPTION='Home'
INTERFACE='wlan0'
SECURITY='wpa'
ESSID='homewlan'
KEY='long_long_key'
IP='dhcp' 
HIDDEN=yes

/etc/wpa_supplicant.conf:

network={
        ssid="homewlan"
        scan_ssid=1
        key_mgmt=WPA-PSK
        proto=WPA2
        psk=long_long_key
        priority=5
}

/etc/rc.d/functions.d/wlan0mac (custom mac is for using dhcp reservation feature in my router):

set_wlan0_mac() {
        ip link set dev wlan0 address f6:20:f3:e3:fc:82
}
add_hook sysinit_end set_wlan0_mac

If I pacman -U linux-3.1.4-1-x86_64.pkg.tar.xz, everything works again.
Any help is really appreciated.
Thanks.

David Batson

Member

Registered: 2011-10-13

Posts: 640

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

I've seen others report this as well.  I believe it's a bug in the kernel.  Working fine here though with the Intel 6205.

EDIT:  Here is one such report: http://askubuntu.com/questions/90699/pa … rnel-3-1-5

Last edited by David Batson (2012-01-03 12:44:39)

vmat

Member

Registered: 2011-10-10

Posts: 25

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

Thanks, David.
In Arch case the module iwlagn.ko is present.

Last edited by vmat (2012-01-03 12:48:49)

David Batson

Member

Registered: 2011-10-13

Posts: 640

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

You might try disabling IPV6.
https://wiki.archlinux.org/index.php/Disabling_IPv6

Or disabling 802.11n mode.
http://fedoraproject.org/wiki/Common_F1 … 2.11n_mode

Last edited by David Batson (2012-01-03 15:09:46)

vmat

Member

Registered: 2011-10-10

Posts: 25

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

Thanks, David.
Disabling 802.11n mode helped.
But it's quite a pity to have it disabled, is there anything I can do to find out why it got broken in >= 3.1.5?

ZekeSulastin

Member

Registered: 2010-09-20

Posts: 266

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

Because in 3.1.5 there was a commit added to iwlwifi that breaks things and in 3.1.6 because our kernel maintainers haven't yet implemented the patch that fixes things in both 3.1.5 and 3.1.6: https://bugs.archlinux.org/task/27581 Revert to 3.1.4 or compile a new kernel with the linked patch.

It's a shame the bug isn't titled properly so it shows up when clicking the "Search Bug Reports" on our linux package page ._.

vmat

Member

Registered: 2011-10-10

Posts: 25

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

Thanks, ZekeSulastin.
So we will wait for 3.1.7 or newer

pcxz

Member

From: Italy

Registered: 2008-01-13

Posts: 67

Re: Wireless Intel 5100 (iwlagn) and linux >= 3.1.5

Because in 3.1.5 there was a commit added to iwlwifi that breaks things and in 3.1.6 because our kernel maintainers haven't yet implemented the patch that fixes things in both 3.1.5 and 3.1.6: https://bugs.archlinux.org/task/27581 Revert to 3.1.4 or compile a new kernel with the linked patch.

It's a shame the bug isn't titled properly so it shows up when clicking the "Search Bug Reports" on our linux package page ._.

No ..this not solve problem for intel wifi card ..it's another problem.
I idem have this problem and only solution found is ...change hardware (wifi card ) ..now work ok.