Wireless Intel 5100 (iwlagn) and linux = 3.1.5

Question

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.

Answer 1

ZekeSulastin wrote:
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.