Problem with ALPHA AWUS036ACH AC1200

[Koffeinjunky]

Hy to everybody.

I am using Linux Mint almost for two Years now on my Laptop. I was only a User and avoided to use the shell.
I decided to dive deeper and to learn working with Linux.
So i bought a usb Wifi adapter; ALPHA AWUS036ACH AC1200. Its supposed to be a good one.

I realized there is no automatic detection and some driver Problems.

Some how i fixed it by following some tutorials i found. The driver who worked for me i got from github (JeremyB).
My Wifi card is now shown up, i can see the Networks aviable, signal strengh.....
everything looks fine,

BUT

when i connect to a Wifi its disconnecting after seconds and again,and again.....?

Maybe i messed up my OS or something else.
even if it was my fault i want to fix it manually not by reinstalling or something.

How i can get run the ALPHA proper on Mint????.

Code: Select all

 sonix ~ $ lsusb
Bus 002 Device 003: ID 0bda:8812 Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac WLAN Adapter
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 003: ID 044e:3017 Alps Electric Co., Ltd BCM2046 Bluetooth Device
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 1ea7:0066  
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 05ca:183e Ricoh Co., Ltd Visual Communication Camera VGP-VCC9 [R5U870]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

sonix ~ $ inxi -Fxz

System:    Host: sonix Kernel: 4.15.0-30-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.7 (Gtk 3.18.9-1ubuntu3.3) Distro: Linux Mint 18.3 Sylvia
Machine:   System: Sony product: VGN-AW11M_H v: C600V43J
           Mobo: Sony model: VAIO Bios: American Megatrends v: R1054Y2 date: 09/23/2009
CPU:       Dual core Intel Core2 Duo P8400 (-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 ssse3 vmx) bmips: 9042
           clock speeds: max: 2267 MHz 1: 1643 MHz 2: 1994 MHz
Graphics:  Card: NVIDIA G98M [GeForce 9300M GS] bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: nouveau (unloaded: fbdev,vesa) Resolution: 1680x945@59.95hz
           GLX Renderer: NV98 GLX Version: 3.0 Mesa 18.0.5 Direct Rendering: Yes
Audio:     Card Intel 82801I (ICH9 Family) HD Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k4.15.0-30-generic
Network:   Card-1: Marvell 88E8055 PCI-E Gigabit Ethernet Controller
           driver: sky2 v: 1.30 port: c000 bus-ID: 02:00.0
           IF: enp2s0 state: down mac: <filter>
           Card-2: Intel WiFi Link 5100 driver: iwlwifi bus-ID: 05:00.0
           IF: wlp5s0 state: up mac: <filter>
           Card-3: Realtek RTL8812AU 802.11a/b/g/n/ac WLAN Adapter
           driver: rtl8812au v: v4.3.14_13455.20150212_BTCOEX20150128-51 usb-ID: 002-003
           IF: wlx00c0caa51764 state: N/A mac: N/A
Drives:    HDD Total Size: 120.0GB (24.6% used) ID-1: /dev/sda model: ADATA_SU650 size: 120.0GB
Partition: ID-1: / size: 106G used: 24G (24%) fs: ext4 dev: /dev/dm-0
           ID-2: /boot size: 472M used: 403M (91%) fs: ext2 dev: /dev/sda1
           ID-3: swap-1 size: 4.26GB used: 0.00GB (0%) fs: swap dev: /dev/dm-1
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 46.0C mobo: 46.0C gpu: 49.0
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 198 Uptime: 42 min Memory: 1489.2/3912.5MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35 
           
sonix ~ $ rfkill list
0: sony-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: sony-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
4: phy1: Wireless LAN
	Soft blocked: no
	Hard blocked: no
5: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no
	
sonix ~ $ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-4.15.0-30-generic root=/dev/mapper/mint--vg-root ro quiet splash, ht=on

thx for helping!

Ps: Sorry for my bad english!

[michael louwe]

.

... https://wiki.gentoo.org/wiki/AC1200_Wireless_Adapters

Seems, you need to first be running Linux kernel 3.10 or 4.3.14 before you can properly install the relevant USB Wifi driver.
....... Then, you need to install the DKMS package before you upgrade the kernel, in order for the USB Wifi to continue working.

[Koffeinjunky]

First of all Thanks for your fast answer.
I am really new at doing stuff over the command line. (last time i did that on DOS 6.22 )
i have some Questions further on.

At that Link are some notes which i am not sure about their meaning:

I have to downgrade the Kernel first or to uninstall the driver.

The RTL8812AU driver will not install correctly if the USB adapter is plugged-in before the driver is installed.

I have to uninstall the driver!? How is the easiest way?

The RTL8812AU driver may not install correctly unless the kernel configuration enables some of the built-in Realtek wireless drivers (including those in staging) as modules.

Before i install the driver i have to do change some kernel configurations?

The RTL8812AU driver must be re-installed after every kernel update, even if the kernel version has not changed

After downgrading the kernel, changing the kernels config.,installing the driver and updating the kernel again---I need to install the driver again?
every Kernel update again?

The RTL8812AU driver requires the Linux wireless extensions (wext) driver.

What is the extension wext driver??

Can you write me what i have to do first, second .....
The right order of the steps i need to do.
thx

[michael louwe]

@ Koffeinjunky, .......

.

.
Latest LM 18.x driver for your USB Wifi adapter ... https://sites.google.com/site/easylinux ... /reserve-7

Sorry, can't be of further help. You will need to sort this out yourself.

There are Linux-compatible USB Wifi adapters that work ootb or are plug-n-play, eg from Panda ... viewtopic.php?f=53&t=273918

[Koffeinjunky]

Thank you for your help. That Link looks quit good and easy.
Ill try that soon and i will post my results here, for somebody else who has that problem.