I have the Edimax EW-7822UAC (2x2 802.11ac) which uses the rtl8812AU chipset. I can confirm that the firmware-realtek package does not contain support for the rtl8812AU chipset, and presumably also does not support the RTL8814U chipset. Neither are listed on https://wiki.debian.org/rtl819x. In contrast, Ubuntu and its derivatives, such as Mint, do package this driver. For example, see https://packages.ubuntu.com/xenial/kernel/rtl8812au-dkms.
Fortunately, I was able to compile and install the rtl8812AU driver from https://github.com/diederikdehaas/rtl8812AU without difficulty. I have been using this wireless card on a desktop system with Stretch. It has been reliable and I had no problem configuring it with networks running WPA2-PSK and WPA2-Enterprise (EAP-TLS). I'm getting speeds around 300 Mbit/sec @ 65-70 dbm when connected to a Ubiquiti AC-LR. In contrast, Mint installed the driver for me without issue but had constant issues with EAP-TLS due to bugs in network-manager. On Wed, Jul 5, 2017 at 2:41 PM, Larry Dighera <ldigh...@att.net> wrote: > Which Debian Stretch package provides firmware for the Realtek > RTL8814U chip? In particular, the Comfast CF-917AC 1750Mbps USB3 > adapter: https://www.amazon.com/dp/B01B75MHR0 . > > Kali Linux supports the RTL8814 natively: > https://www.kali.org/news/kali-linux-20171-release/ . Further, there > are some clues here: https://bugs.kali.org/view.php?id=3260 > https://github.com/diederikdehaas/rtl8812AU > https://github.com/astsam/rtl8812au > https://github.com/lwfinger/rtlwifi_new > > But, I'm looking for an "official" Debian firmware package. > > I wasn't able to find the rt8814 mentioned here: > https://www.debian.org/distrib/packages nor here: > http://linux-wless.passys.nl/query_chipset.php?chipset=Realtek > nor here: https://wireless.wiki.kernel.org/en/users/drivers > >