Re: [...] D-Link DWA-192 - Realtek RTL8814AU WiFi USB 3.0

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On 02/02/2017 01:07 PM, Stephen Morris wrote:
> On 3/2/17 4:28 am, poma wrote:
>> On 02.02.2017 14:19, poma wrote:
>>> On 01.02.2017 22:12, Stephen Morris wrote:
>>> [...]
>>>> I'm about to try to interface the source code for this driver to
>>>> dkms so
>>>> that it will get compiled every time I boot from a new kernel, but at
>>>> the moment I'm not sure how to tell dkms where to find the source code,
>>>> so I'll have to try to investigate that.
>>>>
>>> "dkms.conf" of rtl8812AU is working example
>>> https://github.com/diederikdehaas/rtl8812AU
>>>
>>> # journalctl -o cat -b -u dkms
>>> Starting Builds and install new kernel modules through DKMS...
>>> Kernel preparation unnecessary for this kernel.  Skipping...
>>> Building module:
>>> cleaning build area...
>>> 'make'......................................
>>> cleaning build area...
>>> DKMS: build completed.
>>> 8812au.ko:
>>> Running module version sanity check.
>>>   - Original module
>>>     - No original module exists within this kernel
>>>   - Installation
>>>     - Installing to /lib/modules/4.9.6-100.fc24.x86_64/extra/
>>> Adding any weak-modules
>>> depmod......
>>> DKMS: install completed.
>>> Kernel preparation unnecessary for this kernel.  Skipping...
>>> Building module:
>>> cleaning build area...
>>> 'make'................................
>>> cleaning build area...
>>> DKMS: build completed.
>>> 8814au.ko:
>>> Running module version sanity check.
>>>   - Original module
>>>     - No original module exists within this kernel
>>>   - Installation
>>>     - Installing to /lib/modules/4.9.6-100.fc24.x86_64/extra/
>>> Adding any weak-modules
>>> depmod....
>>> DKMS: install completed.
>>> Started Builds and install new kernel modules through DKMS.
>>>
>>> # modinfo -k $(uname -r) -n 8812au 8814au
>>> /lib/modules/4.9.6-100.fc24.x86_64/extra/8812au.ko
>>> /lib/modules/4.9.6-100.fc24.x86_64/extra/8814au.ko
>>>
>>> # modprobe -v 8812au ; modprobe -v 8814au
>>> insmod /lib/modules/4.9.6-100.fc24.x86_64/kernel/net/rfkill/rfkill.ko.xz
>>> insmod
>>> /lib/modules/4.9.6-100.fc24.x86_64/kernel/net/wireless/cfg80211.ko.xz
>>> insmod /lib/modules/4.9.6-100.fc24.x86_64/extra/8812au.ko
>>> insmod /lib/modules/4.9.6-100.fc24.x86_64/extra/8814au.ko
>>>
>>> # dmesg -t
>>> ...
>>> RTL871X: module init start
>>> RTL871X: rtl8821au v4.3.14
>>> RTL871X: rtl8821au BT-Coex version = BTCOEX20150128-51
>>> usbcore: registered new interface driver rtl8821au
>>> RTL871X: module init ret=0
>>> RTL871X: module init start
>>> RTL871X: rtl8814au v4.3.21_17997.20160531
>>> usbcore: registered new interface driver rtl8814au
>>> RTL871X: module init ret=0
>>>
>>>
>> DKMS - RTL8814AU,
>> as explained for RTL8812AU here:
>> https://github.com/diederikdehaas/rtl8812AU
>>
>> $ git clone https://github.com/diederikdehaas/rtl8814AU.git
>> $ cd rtl8814AU/
>> ...
>> // eventual steps, previously mentioned
>> ...
>> $ curl -JLO
>> https://raw.githubusercontent.com/diederikdehaas/rtl8812AU/driver-4.3.14/dkms.conf
>>
>> $ sed -i 's/12/14/g' dkms.conf
>> $ git add .
>> $ git commit -m "Added dkms.conf"
>> $ git tag 4.3.21_17997.20160531
>>
>> $ su
>> # DRV_NAME=rtl8814AU
>> # DRV_VERSION=4.3.21_17997.20160531
>> # mkdir /usr/src/${DRV_NAME}-${DRV_VERSION}
>> # git archive ${DRV_VERSION} | tar -x -C
>> /usr/src/${DRV_NAME}-${DRV_VERSION}
>>
>> # dkms add -m ${DRV_NAME} -v ${DRV_VERSION}
>> # dkms build -m ${DRV_NAME} -v ${DRV_VERSION}
>> # dkms install -m ${DRV_NAME} -v ${DRV_VERSION}
>>
>> # modinfo 8814au -F version
>> # modprobe -v 8814au
>>
>> 'modprobe' goes if the device is already plugged in,
>> otherwise re-plug USB device, and if VID/PID of device and driver
>> match - auto loading kicks in.
> I think I have worked out the issue with the flashing light on the
> device, it seems to be functioning the same way as the flashing lights
> on ethernet pci cards, which from the functionality of the vendor
> supplied driver under windows, is not the vendor intended mode of
> operation.
> 
> I now have two issues with the device, one is dkms and the other is
> standard networking functionality.
> 
> For dkms I have used the rtl8812au dkms.conf as my starting point. My
> file is below.
> 
> PACKAGE_NAME="rtl8814AU"
> PACKAGE_VERSION="4.3.21"
> BUILT_MODULE_NAME[0]="8814au"
> MAKE="'make' -j3 KVER=${kernelver}"
> CLEAN="'make' clean"
> DEST_MODULE_LOCATION[0]="/updates/dkms"
> AUTOINSTALL="YES"
> 
> 
> The driver source code is stored in directory /usr/src/rtl8814AU-4.3.21,
> does the version number in the directory name and the 'PACKAGE_VERSION'
> in the conf file have to match the internal version number in the driver
> for the boot time compile of the driver to work?
> I've added the -j3 in the make to get the multi-threaded compile and
> I've added the KVER parameter as from my search I did on the net I found
> an article relative to an older version of Fedora that said the KVER
> parameter must be added to get the driver compiled against the correct
> kernel version at kernel install time (they said that without that
> parameter the driver would be compiled against the running kernel, not
> the newly installed kernel).
> With the setup I have if I issue the commands:
>     sudo dkms build -c /usr/src/rtl8814AU-4.3.21/dkms.conf -m rtl8814AU
> -v 4.3.21 and
>     sudo dkms install -c /usr/src/rtl8814AU-4.3.21/dkms.conf -m
> rtl8814AU -v 4.3.21 and
>     sudo modprobe -v 8814au
> they build, install and load the module successfully. I've also found
> that the driver does not get loaded and used unless I issue the modprobe
> command.
> 
> If I issue the command journalctl -o cat -b -u dkms I only get the two
> messages below, which are also the only two message I get shown in the
> boot display when the driver needs to be compiled for a new kernel.
> 
> Starting Builds and install new kernel modules through DKMS...
> Started Builds and install new kernel modules through DKMS.
> 
> I'm also noticing that when the driver has already been compiled and
> installed into the kernel, and I boot my machine, the mounts for my
> network connected nas are failing again because the network via this
> wireless device is not available. From the flashing of the light on the
> device this driver is doing, the network appears to not actually
> becoming active until after the display manager is started, and in my
> case, I physically log into KDE.

That's normal if you don't have the network in question set to start
at boot. You need to make sure the

	/etc/sysconfig/network-scripts/ifcfg-<name-of-connection>

file contains "ONBOOT=yes". Otherwise, they only come up when YOUR
instance of NetworkManager comes up (e.g. when you actually log into
your desktop).

> I know that dkms is being run at boot time as I can see the 'job start
> timer messages' for dkms, akmod and firewalld, which all seem to be
> running in parallel and halt the boot process until they have started,
> all disappear and the boot continue.
> 
> Is the issue I am seeing with the network expected functionality or is
> it an indication there is a timing issue in the driver?

As I said, that's normal unless the "ONBOOT=yes" flag is set in the
aforementioned file(s). I'm not sure if this corresponds to the NM
"Automatically connect to this network when it is available" option or
not. Just try setting the flag in the appropriate file and reboot.

You should also be aware that there are occasions where systemd tries
to mount the filesystems before the network actually comes up--even on
systems with historically 100% functional networking. It is a race
condition that has been a thorn in many people's sides for quite a
while. This can also cause problems with shutting your system down
cleanly. Shutdown will seem to hang for 90 seconds, then systemd
times out, sends a SIGTERM to all processes, and the system finally
shuts down. Maybe. You may have to power-cycle it. Grrrr!
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital    ricks@xxxxxxxxxxxxxx -
- AIM/Skype: therps2        ICQ: 226437340           Yahoo: origrps2 -
-                                                                    -
- Grabel's Law: 2 is not equal to 3--not even for large values of 2. -
----------------------------------------------------------------------
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