Why does not connect to 1Gbit via LAN?

Question

Mikrotik

Mikrotik hex poe router with gigabit ports, Z370 motherboard with intel gigabit adapter. Twisted pair 5 kat, 12 meters long, is laid in the apartment, it does not go next to anything that emits light. In the properties of the Mikrotik interfaces, there are all the checkboxes from 10 to 1000 Mbit / s + auto negotiation, in the network settings, too, auto. In the Mikrotik log, when the computer is turned on (connected to port 2 of the Mikrotik), I see ether2 link up (speed 100M, full duplex). I tried to get into the settings of the Intel adapter and turn on forcibly 1000 Mbps (by the way, it writes there that it does not work at full speed). Result - "network cable is not connected." Why? On Mikrotik it is forced to leave only the gigabit speed even - then you don’t have to reset it ... By the way, the Intel driver has a test wire. Everything goes there, but for some reason the connection length says 255 meters !!! Of course, I'm not inclined to trust the tests built into the drivers, but still strange. Bad wire? Maybe something else?
Just in case, config...

# nov/28/2018 21:41:13 by RouterOS 6.43.4
# software id = ****-****
#
# model = 960PGS
# serial number = **********************
/interface bridge
add admin-mac=********************** auto-mac=no comment=defconf name=bridgeLocal
/interface ethernet
set [ find default-name=ether1 ] speed=100Mbps
set [ find default-name=ether2 ] poe-out=off speed=100Mbps
set [ find default-name=ether3 ] speed=100Mbps
set [ find default-name=ether4 ] speed=100Mbps
set [ find default-name=ether5 ] speed=100Mbps
set [ find default-name=sfp1 ] advertise=\
    10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
/interface pppoe-client
add add-default-route=yes disabled=no interface=ether1 name=pppoe-out1 \
    password=*************** service-name=Dom.ru use-peer-dns=yes user=*****************
/interface list
add name=WAN
add name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip hotspot profile
set [ find default=yes ] html-directory=flash/hotspot
/ip pool
add name=dhcp ranges=192.168.*.*-192.168.*.*
/ip dhcp-server
add address-pool=dhcp disabled=no interface=bridgeLocal name=dhcp1
/interface bridge port
add bridge=bridgeLocal comment=defconf disabled=yes interface=ether1
add bridge=bridgeLocal comment=defconf hw=no interface=ether2
add bridge=bridgeLocal comment=defconf hw=no interface=ether3
add bridge=bridgeLocal comment=defconf hw=no interface=ether4
add bridge=bridgeLocal comment=defconf hw=no interface=ether5
add bridge=bridgeLocal comment=defconf hw=no interface=sfp1
/ip neighbor discovery-settings
set discover-interface-list=WAN
/interface detect-internet
set detect-interface-list=all
/interface list member
add interface=pppoe-out1 list=WAN
add interface=bridgeLocal list=LAN
/ip address
add address=192.168.*.*/24 interface=ether2 network=192.168.*.*
add address=192.168.*.*/24 interface=ether3 network=192.168.*.*
/ip dhcp-client
add comment=defconf dhcp-options=hostname,clientid interface=ether1
/ip dhcp-server network
add address=192.168.*.*/24 gateway=192.168.*.* netmask=24
/ip dns
set allow-remote-requests=yes
/ip firewall filter
add action=drop chain=input comment="Drop all invalid connections" \
    connection-state=invalid
add action=drop chain=forward comment="Drop all from WAN if not DSTNATed" \
    connection-nat-state=!dstnat connection-state=new disabled=yes \
    in-interface-list=WAN log=yes
add action=accept chain=input dst-address=192.168.*.*/24 dst-port=**** \
    protocol=tcp
add action=accept chain=input connection-state=new dst-port=*****,****,**** \
    in-interface=bridgeLocal protocol=tcp src-address=192.168.*.*/24
add action=accept chain=forward connection-state=established,new in-interface=\
    bridgeLocal out-interface=pppoe-out1 src-address=192.168.*.*/24
add action=accept chain=forward connection-state=established,related \
    dst-address=192.168.*.*/24 in-interface=pppoe-out1 out-interface=\
    bridgeLocal
add action=reject chain=forward disabled=yes reject-with=\
    icmp-network-unreachable
/ip firewall nat
add action=masquerade chain=srcnat
add action=dst-nat chain=dstnat disabled=yes dst-address=*.*.*.* \
    dst-port=**** protocol=tcp to-addresses=192.168.*.* to-ports=****
/ip service
set telnet address=192.168.*.*/24
set ssh address=192.168.*.*/24
/ip upnp
set enabled=yes
/ip upnp interfaces
add interface=pppoe-out1 type=external
add interface=bridgeLocal type=internal
/routing igmp-proxy
set quick-leave=yes
/routing igmp-proxy interface
add interface=pppoe-out1 upstream=yes
add interface=bridgeLocal
/system clock
set time-zone-name=Europe/******
/system routerboard settings
set silent-boot=no
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN
/tool mac-server ping
set enabled=no

Answer 1

I would start with a wire call. Gigabit uses all four pairs. You need to check the blue and brown (if they are pressed according to the standard).

Answer 2

I agree with beerchaser , the problem is most likely in the cable or in the network connectors themselves.
Make
In theory, it should show if something is wrong with the pairs.

Answer 3

Thank you all - everything really rested on the cable. One of its ends was crimped by a technician who connected the Internet. When I checked the contact (I thought that I didn’t touch it myself, when I set up the router, I took it out and inserted it several times) - nothing had changed, but it was not visually visible - it seemed that all the wires were standing (it was already late in the evening, it didn’t work out much). Today I pulled the wire out into the light, when I cut off the connector it turned out that the brown and blue pairs just fell out - they were not clamped. I redid it myself - everything started right away.