[elrepo] Updated 8818AU driver, please

[Nick Howitt]

On 05/03/2018 22:51, Phil Perry wrote:
> On 05/03/18 20:29, Nick Howitt wrote:
>>
>>
>> On 05/03/2018 20:24, Nick Howitt wrote:
>>>
>>>
>>> On 05/03/2018 20:16, Phil Perry wrote:
>>>> On 05/03/18 09:35, Nick Howitt wrote:
>>>>> Hi,
>>>>>
>>>>> I have a little USB 802.11ac dongle that I'm trying to get going 
>>>>> in my server. lsusb gives:
>>>>>
>>>>>     Bus 002 Device 002: ID 0bda:a811 Realtek Semiconductor Corp.
>>>>>     RTL8811AU 802.11a/b/g/n/ac WLAN Adapter
>>>>>
>>>>>
>>>>> I've had a look at the current kmod driver which is version 
>>>>> 8188eu-kmod-4.1.4_6773.20130222-3 and it does not cover the USB 
>>>>> ID. Looking at the spec file in the src rpm it points me to 
>>>>> https://github.com/lwfinger/rtl8188eu but there is no useful 
>>>>> update there.
>>>>>
>>>>> There appear to be a few sources for this driver such as 
>>>>> https://github.com/abperiasamy/rtl8812AU_8821AU_linux and 
>>>>> https://github.com/diederikdehaas/rtl8812AU which both cover the 
>>>>> USB ID. Are you able to work your magic on one of these or any 
>>>>> other relevant version you can find?
>>>>>
>>>>> Many thanks,
>>>>>
>>>>> Nick
>>>>
>>>>
>>>> Sure, I can take a look but it probably won't be before the weekend.
>>>>
>>>> Do either of those driver sources compile / work for you? The first 
>>>> one looks more maintained so I'd probably start with that. I 
>>>> couldn't find any linux driver/source on the Realtek website for 
>>>> your device, only for Windows. I wonder where these (above) driver 
>>>> sources originated?
>>>>
>>>> Phil
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>>> Hi Phil,
>>> I have not tried compiling anything because I don't know what magic 
>>> you do. I can give it a go and see what happens. I am puzzled about 
>>> the sources because I tried searching github for rtl8188au and only 
>>> the lwfinger sources appeared so I must searching incorrectly. I 
>>> agree about the realtek site. I tried searching there as well.
>>> Yours puzzled,
>>> Nick
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>> Google-fu working better: 
>> https://github.com/zebulon2/rtl8812au-driver-5.2.20 and 
>> https://github.com/gordboy/rtl8812au. I've never compiled dkms stuff 
>> before ....
>>
>> Nick
>
> These are originally imported from Realtek. For example, see the 
> Realtek changelog from your last link:
>
> https://github.com/gordboy/rtl8812au/blob/a20632c756bd8bd84eb1cb93ac6609d11cd87343/Realtek_Changelog.txt 
>
>
> Still, briefly looking at the code I anticipate huge issues getting 
> the code to build on el7. The issue is the code uses many conditionals 
> based on the linux kernel version. The code views the el7 kernel as a 
> 3.10 kernel, but Red Hat has backported the wireless stack from 
> kernel-4.11 in el7.4 which is most likely why your builds fail.
>
> To be brutally honest, it's generally not worth the effort trying to 
> fix this, as even if we do fix it, it will break again next month when 
> Red Hat release el7.5 with a backported wireless stack based upon 
> kernel-4.14. Rather than me/us trying to fix it, I would request 
> Realtek provide a driver that supports RHEL and let them do the hard 
> work, or not buy their hardware.
>
> I would put your unsupported hardware back in it's box and stick it on 
> a shelf until such time as it is natively supported, and buy something 
> that works out of the box. For example, I recently purchased an Edimax 
> N150 nano USB adapter (EW-7811Un) for less than $10 on Amazon which is 
> natively supported and works fine out of the box on el7 (based on 
> Realtek RTL8188CUS chipset, uses the rtl8192cu driver), replacing a 
> failing internal WiFi adapter in my laptop.
>
>
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I'm giving up. I've found references to v4.3.8 compiling OK. I found 
those at 
https://github.com/ulli-kroll/rtl8821au/tree/original/v4.3.8/vanilla and 
they compile with a couple of warnings. I can modprobe the resulting .ko 
but it is never used or associated with the NIC so ifcfg files never get 
created and so on.

I'm just looking out for a cheap adaptor to play with to try out n and 
ac 5GHz configurations on the server. I'll start hunting again. I 
thought I had it sorted, but it is hard to get the PCI/USB ID's in 
advance of buying the adaptor.

Nick