On Tue, May 21, 2019 at 07:05:49AM -0400, BELAHCENE Abdelkader wrote: > I have a trouble with my network card (extern card) > lspci gives: > 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 02) > mii-tool enp4s0 > SIOCGMIIPHY on 'enp4s0' failed: No such device
I would suggest you try installing the firmware-realtek package (it's non-free) if you haven't already done so. Then reboot. https://packages.debian.org/stretch/firmware-realtek
