I (linux newbie) have a Dell XPS 17 and tried to install Ubuntu 12.04. After installation all WLAN accesspoints near are detected. But I can not connect (but I am able to connect with other computers as well as with Dell XPS 17 under windows). Outputs:
iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11bg ESSID:"LerchenPoint"
Mode:Managed Frequency:2.412 GHz Access Point: 58:6D:8F:A0:2D:58
Bit Rate=1 Mb/s Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-37 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:19 Missed beacon:0
eth0 no wireless extensions.
sudo lshw -class network
*-network
description: Wireless interface
product: Centrino Wireless-N 1000
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
version: 00
serial: 00:26:c7:99:98:28
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-24-generic firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11bg
resources: irq:50 memory:f0400000-f0401fff
*-network
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:0a:00.0
logical name: eth0
version: 06
serial: f0:4d:a2:56:e3:94
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp
mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.123 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
resources: irq:47 ioport:6000(size=256) memory:f0a04000-f0a04fff memory:f0a00000-f0a03fff
dmesg | grep iwl
[ 10.157531] iwlwifi 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 10.157561] iwlwifi 0000:04:00.0: setting latency timer to 64
[ 10.157598] iwlwifi 0000:04:00.0: pci_resource_len = 0x00002000
[ 10.157599] iwlwifi 0000:04:00.0: pci_resource_base = ffffc90011090000
[ 10.157601] iwlwifi 0000:04:00.0: HW Revision ID = 0x0
[ 10.157731] iwlwifi 0000:04:00.0: irq 50 for MSI/MSI-X
[ 10.157834] iwlwifi 0000:04:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C
[ 10.157976] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 10.179772] iwlwifi 0000:04:00.0: device EEPROM VER=0x15d, CALIB=0x6
[ 10.179775] iwlwifi 0000:04:00.0: Device SKU: 0X50
[ 10.179777] iwlwifi 0000:04:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3
[ 10.179796] iwlwifi 0000:04:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels
[ 10.574728] iwlwifi 0000:04:00.0: loaded firmware version 39.31.5.1 build 35138
[ 10.726409] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[ 19.714132] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 19.777862] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 2251.603089] iwlwifi 0000:04:00.0: PCI INT A disabled
[ 2266.578350] iwlwifi 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 2266.578399] iwlwifi 0000:04:00.0: setting latency timer to 64
[ 2266.578435] iwlwifi 0000:04:00.0: pci_resource_len = 0x00002000
[ 2266.578437] iwlwifi 0000:04:00.0: pci_resource_base = ffffc90011090000
[ 2266.578439] iwlwifi 0000:04:00.0: HW Revision ID = 0x0
[ 2266.578704] iwlwifi 0000:04:00.0: irq 50 for MSI/MSI-X
[ 2266.578808] iwlwifi 0000:04:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C
[ 2266.578916] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 2266.600709] iwlwifi 0000:04:00.0: device EEPROM VER=0x15d, CALIB=0x6
[ 2266.600712] iwlwifi 0000:04:00.0: Device SKU: 0X50
[ 2266.600713] iwlwifi 0000:04:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3
[ 2266.600727] iwlwifi 0000:04:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels
[ 2266.605978] iwlwifi 0000:04:00.0: loaded firmware version 39.31.5.1 build 35138
[ 2266.606331] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[ 2266.614179] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
[ 2266.681541] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
Solutions I tried:
rfkill list all
0: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf
options iwlwifi 11n_disable=1
sudo modprobe -rfv iwlwifi
WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be
ignored in a future release.
rmmod /lib/modules/3.2.0-24-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
rmmod /lib/modules/3.2.0-24-generic/kernel/net/mac80211/mac80211.ko
rmmod /lib/modules/3.2.0-24-generic/kernel/net/wireless/cfg80211.ko
sudo modprobe iwlwifi
WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be
ignored in a future release.
replacing iwlwifi-1000-5.ucode (current driver) against iwlwifi-1000-3.ucode
sudo jockey-gtk:
(jockey-gtk:2493): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion icon_set != NULL' failed (jockey-gtk:2493): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion icon_set != NULL' failed
nothing is listet in "Additional drivers" (german: "Zusätzliche Treiber").
gksudo gedit /etc/modprobe.d/blacklist.conf
add "blacklist acer_wmi"
Any help would be appreciated very much.
Thanks!!
Best Answer
Before you do all that, check your BIOS settings.
I have the same machine and, every once in a while, it will report that wireless is disabled by hardware switch.
It happens only when I suspend the machine while plugged into an ethernet wired connection and then wake it up expecting to use wireless only.
The wireless "button" above the keyboard will not turn it back on, so I have to go into BIOS to re-enable it. Save, reboot, enable wireless in Network Connections and everything's back to normal.