CentOS - Apr 2016 - CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

With CentOS 7.2 a laptop wireless card is recognized in dmesg, but
nonfunctional. Toggling the hardware wifi switch causes the Bluetooth
icon to appear and disappear. The network configuration window shows
the Wireless tab greyed out.  Rebooting with the bluetooth enabled
does not help. It appears the appropriate driver is iwlwifi, which is
what works in Fedora and appears to be available and installed in
CentOS.

lspci gives
08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

1. How do I get this working?  I am happy to work with command line tools.

2. Are there other packages I need? I installed wireless-tools, and
tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
does seem to interact with the wifi device.

3. Is there documentation I should be following to
understand/troubleshoot networking support?
https://wiki.centos.org/HowTos/Laptops/Wireless does not document the
iwlwifi driver.

On 4/13/2016 7:42 PM, Philip V wrote:
> lspci gives
> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev
c4)
>
> 1. How do I get this working?  I am happy to work with command line tools.
>
> 2. Are there other packages I need? I installed wireless-tools, and
> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
> does seem to interact with the wifi device.
>
> 3. Is there documentation I should be following to
> understand/troubleshoot networking support?
> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
> iwlwifi driver.

https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi

suggests you might need to get a firmware tarball for that card, and 
copy the appropriate iwlwifi-*.ucode file to /lib/firmware or something.



-- 
john r pierce, recycling bits in santa cruz

On Wed, Apr 13, 2016 at 7:42 PM, Philip V <pv.bugzilla+centos at
gmail.com> wrote:
> 1. How do I get this working?  I am happy to work with command line tools.
Could you post the output of:

dmesg | grep iwlwifi

Brandon Vincent

Hallo don?t know if this helps.

http://linuxwireless.org/en/users/Drivers/iwlwifi/
<http://linuxwireless.org/en/users/Drivers/iwlwifi/>

https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware.git/+/master
<https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware.git/+/master>

git clone
https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware
<https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-firmware>


> Am 14.04.2016 um 05:01 schrieb John R Pierce <pierce at
hogranch.com>:
> 
> On 4/13/2016 7:42 PM, Philip V wrote:
>> lspci gives
>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230
(rev c4)
>> 
>> 1. How do I get this working?  I am happy to work with command line
tools.
>> 
>> 2. Are there other packages I need? I installed wireless-tools, and
>> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
>> does seem to interact with the wifi device.
>> 
>> 3. Is there documentation I should be following to
>> understand/troubleshoot networking support?
>> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
>> iwlwifi driver.
> 
> 
> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
> 
> suggests you might need to get a firmware tarball for that card, and copy
the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
> 
> 
> 
> -- 
> john r pierce, recycling bits in santa cruz
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos

this seems to be the right firmware

https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-2030-ucode-18.168.6.1.tgz
<https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-2030-ucode-18.168.6.1.tgz>


> Am 14.04.2016 um 05:01 schrieb John R Pierce <pierce at
hogranch.com>:
> 
> On 4/13/2016 7:42 PM, Philip V wrote:
>> lspci gives
>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230
(rev c4)
>> 
>> 1. How do I get this working?  I am happy to work with command line
tools.
>> 
>> 2. Are there other packages I need? I installed wireless-tools, and
>> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
>> does seem to interact with the wifi device.
>> 
>> 3. Is there documentation I should be following to
>> understand/troubleshoot networking support?
>> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
>> iwlwifi driver.
> 
> 
> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
> 
> suggests you might need to get a firmware tarball for that card, and copy
the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
> 
> 
> 
> -- 
> john r pierce, recycling bits in santa cruz
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos

On Thursday 14 April 2016 03:42:50 Philip V wrote:
> With CentOS 7.2 a laptop wireless card is recognized in dmesg, but
> nonfunctional. Toggling the hardware wifi switch causes the
>  Bluetooth icon to appear and disappear. The network configuration
>  window shows the Wireless tab greyed out.  Rebooting with the
>  bluetooth enabled does not help. It appears the appropriate driver
>  is iwlwifi, which is what works in Fedora and appears to be
>  available and installed in CentOS.
> 
> lspci gives
> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N
>  2230 (rev c4)
> 
I had similar problems installing 7.2 onto a couple of Dell E6xxx 
laptops with 
Intel Corporation Centrino Ultimate-N 5300/6300 cards. It lets me 
configure the network at install time but when I boot there is no wifi 
device.

Partial solution.

Laptop 1.  ( install when 7.1 was latest release )
        installed 7.1        no wifi
	installed 7.0        wifi works
        upgraded to 7.1 several months ago    wifi works
        upgraded to 7.2 when it was released   wifi works

Laptop 2   ( install when 7.2 was latest release )
         installed 7.2      no wifi
         installed  7.0     wifi works
         upgraded to 7.2 ( last weekend )   no wifi


Any ideas.

Regards
Tony

-- 
Linux nogs.tonyshome.ie 2.6.32-573.22.1.el6.x86_64 #1 SMP Wed Mar 23 
03:35:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

take a view on:

kernel  and linux firmware 
sometimes firmware is excluded after upgrade to new revision.

Regards

Andy

I found the the code firmware in

iwl2000-firmware package
> Am 14.04.2016 um 12:39 schrieb Tony Molloy <tony.molloy at ul.ie>:
> 
> On Thursday 14 April 2016 03:42:50 Philip V wrote:
>> With CentOS 7.2 a laptop wireless card is recognized in dmesg, but
>> nonfunctional. Toggling the hardware wifi switch causes the
>> Bluetooth icon to appear and disappear. The network configuration
>> window shows the Wireless tab greyed out.  Rebooting with the
>> bluetooth enabled does not help. It appears the appropriate driver
>> is iwlwifi, which is what works in Fedora and appears to be
>> available and installed in CentOS.
>> 
>> lspci gives
>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N
>> 2230 (rev c4)
>> 
> 
> I had similar problems installing 7.2 onto a couple of Dell E6xxx 
> laptops with 
> Intel Corporation Centrino Ultimate-N 5300/6300 cards. It lets me 
> configure the network at install time but when I boot there is no wifi 
> device.
> 
> Partial solution.
> 
> Laptop 1.  ( install when 7.1 was latest release )
>        installed 7.1        no wifi
> 	installed 7.0        wifi works
>        upgraded to 7.1 several months ago    wifi works
>        upgraded to 7.2 when it was released   wifi works
> 
> Laptop 2   ( install when 7.2 was latest release )
>         installed 7.2      no wifi
>         installed  7.0     wifi works
>         upgraded to 7.2 ( last weekend )   no wifi
> 
> 
> Any ideas.
> 
> Regards
> Tony
> 
> -- 
> Linux nogs.tonyshome.ie 2.6.32-573.22.1.el6.x86_64 #1 SMP Wed Mar 23 
> 03:35:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos

Thank you, I checked, and the firmware

/usr/lib/firmware/iwlwifi-2030-6.ucode

is already installed by default (timestamped 2012-Jan, it is not new).



On Wed, Apr 13, 2016 at 11:01 PM, John R Pierce <pierce at hogranch.com>
wrote:
> On 4/13/2016 7:42 PM, Philip V wrote:
>>
>> lspci gives
>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230
>> (rev c4)
>>
>> 1. How do I get this working?  I am happy to work with command line
tools.
>>
>> 2. Are there other packages I need? I installed wireless-tools, and
>> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
>> does seem to interact with the wifi device.
>>
>> 3. Is there documentation I should be following to
>> understand/troubleshoot networking support?
>> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
>> iwlwifi driver.
>
>
>
> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
>
> suggests you might need to get a firmware tarball for that card, and copy
> the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
>
>
>
> --
> john r pierce, recycling bits in santa cruz
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos

> Could you post the output of      dmesg | grep iwlwifi
Thanks Brandon and everyone -- to skip reboot I hope it is sufficient to execute
sudo grep iwlwifi  [CentOSpartition]/var/log/messages
(you can see several reboots and my attempts to experiment)

Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 12 16:16:48 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 12 16:16:48 localhost NetworkManager[1033]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 12 16:16:48 localhost NetworkManager[1033]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 12 16:22:02 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to disable radio.
Apr 12 16:22:12 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to enable radio.
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Jun  1 07:03:35 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Jun  1 07:03:36 localhost NetworkManager[1031]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Jun  1 07:03:36 localhost NetworkManager[1031]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 12 18:22:21 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to disable radio.
Apr 12 18:22:25 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to enable radio.
Apr 12 19:28:13 localhost NetworkManager[20019]: <info>  rfkill0:
found WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 12 19:28:13 localhost NetworkManager[20019]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 12 19:29:58 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to disable radio.
Apr 12 19:30:06 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to enable radio.
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 13 13:04:56 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 13:04:56 localhost NetworkManager[1031]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 13 13:04:56 localhost NetworkManager[1031]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 13 13:05:50 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to disable radio.
Apr 13 13:05:57 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to enable radio.
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 13 13:06:36 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 13:06:37 localhost NetworkManager[1028]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 13 13:06:37 localhost NetworkManager[1028]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 13 14:21:58 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:21:58 localhost NetworkManager[1031]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 13 14:21:58 localhost NetworkManager[1031]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 13 14:29:33 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:29:33 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 14:29:33 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:29:33 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 14:41:12 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to disable radio.
Apr 13 14:41:12 localhost kernel: iwlwifi 0000:08:00.0: Not sending
command - RF KILL
Apr 13 14:41:12 localhost kernel: iwlwifi 0000:08:00.0: Not sending
command - RF KILL
Apr 13 14:41:21 localhost kernel: iwlwifi 0000:08:00.0: RF_KILL bit
toggled to enable radio.
Apr 13 14:49:13 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:49:13 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 14:49:14 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:49:14 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 14:54:21 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:54:21 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 14:54:22 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 14:54:22 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 15:15:50 localhost NetworkManager[8313]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 13 15:15:50 localhost NetworkManager[8313]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 13 15:19:32 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 15:19:32 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 15:19:32 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 15:19:32 localhost kernel: iwlwifi 0000:08:00.0: Radio type=0x2-0x0-0x0
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 13 15:25:08 localhost kernel: iwlwifi 0000:08:00.0: L1 Enabled -
LTR Disabled
Apr 13 15:25:09 localhost NetworkManager[1029]: <info>  rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1c.1/0000:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 13 15:25:09 localhost NetworkManager[1029]: <info>  (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 4)


On Thu, Apr 14, 2016 at 1:17 AM, Brandon Vincent
<Brandon.Vincent at asu.edu> wrote:
> On Wed, Apr 13, 2016 at 7:42 PM, Philip V <pv.bugzilla+centos at
gmail.com> wrote:
>> 1. How do I get this working?  I am happy to work with command line
tools.
>
> Could you post the output of:
>
> dmesg | grep iwlwifi
>
> Brandon Vincent
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos