#issue with Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723] been not detected by Ubuntu 18 1.Checking for wireless device tony@techyoga:~$ lspci -nnk | grep -iA3 net 01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15) Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:84ad] Kernel driver in use: r8169 Kernel modules: r8169 02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723] Subsystem: Hewlett-Packard Company Device [103c:8319] Kernel driver in use: rtl8723de Kernel modules: rtl8723de, wl 2. Instal dkms if not installed tony@techyoga:~$ sudo apt install git dkms Reading package lists... Done Building dependency tree Reading state information... Done dkms is already the newest version (2.3-3ubuntu9.5). dkms set to manually installed. git is alrea