Wifi connection issues with Intel?

[poma]

On 11.06.2014 13:33, Josh Boyer wrote:
> On Wed, Jun 11, 2014 at 12:35:36PM +0200, poma wrote:
>> On 11.06.2014 10:18, poma wrote:
>>> On 11.06.2014 04:34, Richard Shaw wrote:
>>>> On Tue, Jun 10, 2014 at 6:09 PM, poma <pomidorabelisima at gmail.com> wrote:
>>>>
>>>>> Firmware, kernel module or userspace? :)
>>>>>
>>>>
>>>>    # uname -r
>>>> 3.14.5-200.fc20.x86_64
>>>>
>>>> No clue on firmware, I'm not exactly sure how to check which is being
>>>> loaded...
>>>>
>>>>
>>>> Did you mention an exact hardware in question?
>>>>>
>>>>
>>>> 02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev
>>>> 24)
>>>> Subsystem: Intel Corporation Centrino Advanced-N 6235 AGN
>>>> Flags: bus master, fast devsel, latency 0, IRQ 48
>>>> Memory at f0200000 (64-bit, non-prefetchable) [size=8K]
>>>> Capabilities: [c8] Power Management version 3
>>>> Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
>>>> Capabilities: [e0] Express Endpoint, MSI 00
>>>> Capabilities: [100] Advanced Error Reporting
>>>> Capabilities: [140] Device Serial Number c8-f7-33-ff-ff-f4-2d-ba
>>>> Kernel driver in use: iwlwifi
>>>> Kernel modules: iwlwifi
>>>>
>>>>
>>>> BTW how are you sure RF environment ain't changed?
>>>>>
>>>>
>>>> Nothing new has come in or left the house since the problem...
>>>>
>>>> Thanks,
>>>> Richard
>>>
>>>
>>> - KERNEL:
>>> $ curl -s https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.6 | grep iwlwifi
>>>
>>> So pick up kernel-3.14.6-200.fc20.x86_64.rpm
>>> http://koji.fedoraproject.org/koji/buildinfo?buildID=531773
>>>
>>> You can also try with kernel-core-3.15.0-1.fc21.x86_64.rpm
>>> http://alt.fedoraproject.org/pub/alt/rawhide-kernel-nodebug/x86_64/
>>>
>>>
>>> - FIRMWARE:
>>> $ modinfo -F firmware iwlwifi
>>>
>>> # yum --enablerepo updates-testing install iwl6000g2b-firmware
>>>
>>> $ rpm -qf /usr/lib/firmware/iwlwifi-6000g2b-6.ucode
>>> iwl6000g2b-firmware-17.168.5.2-38.fc20.noarch
>>>
>>> According to
>>> http://wireless.kernel.org/en/users/Drivers/iwlwifi#Firmware
>>> Intel® Centrino® Advanced-N 6235 goes with iwlwifi-6000g2b-ucode-18.168.6.1.tgz
>>> i.e. iwlwifi-6000g2b-6.ucode
>>> also stated within firmware itself:
>>> https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/iwlwifi-6000g2b-6.ucode
>>> "IWL.6000g2b.fw.v18.168.6.1.build.0"
>>>
>>> However in Fedora it is packaged as "17" i.e. iwl6000g2b-firmware-17.168.5.2-38.fc20.noarch
>
> Probably because I forgot to increment the version number.
>
>>> Josh, do these two firmwares should be in their own packages as "18"?
>
> No.
>
>>>
>>> Intel® Centrino® Advanced-N 6235 - iwlwifi-6000g2b-ucode-18.168.6.1
>>> i.e. iwlwifi-6000g2b-6.ucode - "IWL.6000g2b fw v18.168.6.1 build 0"
>>> in iwl6000g2b-firmware-18.168.6.1-1.f$releasever.noarch.rpm
>>>
>>> and
>>>
>>> Intel® Centrino® Advanced-N 6205 - iwlwifi-6000g2a-ucode-18.168.6.1
>>> i.e. iwlwifi-6000g2a-6.ucode - "IWL.6000g2a fw v18.168.6.1 build 0"
>>> in iwl6000g2a-firmware-18.168.6.1-1.f$releasever.noarch.rpm
>>
>> e.g.
>>
>> - Intel® Centrino® Advanced-N 6235
>>
>> 1. Rename
>> iwl6000g2b-firmware-17.168.5.2-38.fc20.noarch
>> to
>> iwl6000g2b5-firmware-17.168.5.2-38.fc20.noarch
>> /usr/lib/firmware/iwlwifi-6000g2b-5.ucode
>>
>> 2. Create
>> iwl6000g2b6-firmware-18.168.6.1-1.f20.noarch.rpm
>> /usr/lib/firmware/iwlwifi-6000g2b-6.ucode
>>
>>
>> - Intel® Centrino® Advanced-N 6205
>>
>> 3. Rename
>> iwl6000g2a-firmware-17.168.5.3-38.fc20.noarch
>> to
>> iwl6000g2a5-firmware-17.168.5.3-38.fc20.noarch
>> /usr/lib/firmware/iwlwifi-6000g2a-5.ucode
>>
>> 4. Create
>> iwl6000g2a6-firmware-18.168.6.1-1.f20.noarch.rpm
>> /usr/lib/firmware/iwlwifi-6000g2a-6.ucode
>
> No.  That's really pointless work and makes the linux-firmware package
> even more complicated that it already is.
>
> The firmware is getting installed and it's correct.  Most times people
> don't need to worry about which firmware they have, and if they do they
> can consult the WHENCE file installed in /usr/share/doc/linux-firmware/.
>
> josh
>

IF I correctly understood
http://wireless.kernel.org/en/users/Drivers/iwlwifi#Firmware
Fedora is shipping at least one unnecessary firmware version compared to the kernels used,
e.g. for
Intel® Centrino® Advanced-N 6205
IS required only iwlwifi-6000g2a-6.ucode - kernel 3.2+
and NOT iwlwifi-6000g2a-5.ucode - kernel 2.6.35+

iwlwifi-6000g2b-[56].ucode is a bit more complex case because it refers to four devices i.e.
Intel® Centrino® Advanced-N 6230
Intel® Centrino® Wireless-N 1030
Intel® Centrino® Wireless-N 130
Intel® Centrino® Advanced-N 6235

IF I correctly understood
http://wireless.kernel.org/en/users/Drivers/iwlwifi#Firmware
even the module itself "incorrectly" advertises some of the firmwares,

$ modinfo -F firmware iwlwifi
iwlwifi-100-5.ucode
iwlwifi-1000-5.ucode
iwlwifi-135-6.ucode
iwlwifi-105-6.ucode
iwlwifi-2030-6.ucode
iwlwifi-2000-6.ucode
iwlwifi-5150-2.ucode
iwlwifi-5000-5.ucode
iwlwifi-6000g2b-6.ucode
iwlwifi-6000g2a-5.ucode  <-
iwlwifi-6050-5.ucode
iwlwifi-6000-4.ucode
iwlwifi-7265-8.ucode
iwlwifi-3160-8.ucode
iwlwifi-7260-8.ucode
iwlwifi-8000-8.ucode

Comment by you folks at Intel? :)


poma