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I use the rtl8812au driver for my wifi adapter. I have dkms setup so that after each kernel upgrade, it gets compiled. Here are the commands I ran to set that up:

DRV_NAME=rtl8812AU
DRV_VERSION=4.3.14
mkdir /usr/src/${DRV_NAME}-${DRV_VERSION}
git archive driver-${DRV_VERSION} | tar -x -C /usr/src/${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}

Now, after each reboot, my wifi adapter is disabled and to get it working again, I have to go back to the source directory of rtl8812au driver (I go to the original dir, not the dkms-made one), ensure that make has been run for this kernel, and run insmod 8812au.ko. At this point, my adapter fires up and works until the next boot.

How to fix dkms for this driver?

xendi
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  • avoid realtek https://unix.stackexchange.com/questions/252210/wi-fi-problems-using-asus-usb-n13-adapter/252215 – Rui F Ribeiro Oct 26 '17 at 21:17
  • I have no problem with it when the kernel mod is running. I haven't always had this issue where I have to manually do insmod. I think it's a command I'm missing. There's nothing wrong with the driver for my adapter. – xendi Oct 27 '17 at 02:10
  • does adding the text 8812au to /etc/modules fixes your problem? – Rui F Ribeiro Oct 27 '17 at 03:02
  • Just for reference, dkms is responsible to (re)build a driver for new kernels, but not to load this driver. – doktor5000 Nov 12 '17 at 14:28

2 Answers2

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cat /usr/src/8812au-4.3.14/dkms.conf 
PACKAGE_NAME="rtl8812AU"
PACKAGE_VERSION="#MODULE_VERSION#"
BUILT_MODULE_NAME[0]="8812au"
MAKE="'make'"
CLEAN="'make' clean"
DEST_MODULE_LOCATION[0]="/updates/dkms"
AUTOINSTALL="YES"

But I use git clone. And I rename /usr/src/rtl8812AU to /usr/src/8812au-4.3.14/

sudo dkms add -m 8812au -v 4.3.14
sudo dkms install -m 8812au -v 4.3.14
sudo depmod -a
sudo update-initramfs -u -k $(uname -r)

The drivername is 8812au not rtl8812AU. You need depmod -a because modinfo 8812au | grep dep depends: cfg80211

The modul needs another modul as dependency.

  • I reinstalled the dkms module and it's working fine again. This is good info too and would have lead to the same thing so I'll accept it. – xendi Nov 01 '17 at 07:47
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This GitHub page: gordboy has three repositories for Realtek 8812AU drivers.

Currently, the newest is 8812au-5.9

Clone the git repository, cd into its folder and type:

make
sudo make install

Everything is compiled and installed automatically (thanks gordboy!)

flyingfinger
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