Am 17.09.2019 um 13:05 schrieb Miroslav Geisselreiter: > I have brand new PC with this components: > CPU Intel® Pentium G5400, LGA1151 > motherboard ASUS PRIME B360M-C > 16 GB RAM > HDD 2x ADATA SSD 256GB XPG GAMMIX S11, PCIe Gen3x4 M.2 2280 (RAID1) > NIC Intel X550-T1 Ethernet Converged Network Adapter > > I installed CentOS 7 and two NICs were detected: > eno1 (on motherboard) > enp1s0 (Intel X550-T1) > > When I restart the machine sometimes enp1s0 is missing. It is not > detected during boot. It looks like NIC card is not installed / not > present. After next reboot everything is fine and I do not see any > problems with NIC card. > > How can I avoid this problem with missing NIC? Can you help me, please? > Hallo, perhaps a timing problem until the nic is up or a bios bug. Ralf