У меня есть только беспроводная связь на моем компьютере (я не могу физически переместить ее для достижения Ethernet).
Когда я запускаю Linux, я вижу сообщение об ошибке: (я заменил wlp0 ... на)
    [FAILED] Failed to start dhcpcd on <mywirelessinterface>. See 'systemctl status dhcpcd@<mywirelessinterface>.service’ for details.
Хорошо, я делаю это:
    # systemctl status dhcpcd@<mywirelessinterface>.service
    * dhcpcd@<mywirelessinterface>.service - dhcpcd on <mywirelessinterface>
    Loaded: loaded (/usr/lib/system/system/dhcpcd@.service: enabled)
    Active: failed (Result: resources) since <recent date and time>
    Process: 2918 ExecStart=/usr/bin/dhcpcd -q -w %I (code=exited, status=0/SUCCESS)
    <Current date and time> localhost system[1]: PID file /run/dhcpcd-<mywirelessinterface>.pid not readable (yet?) after start.
    <Current date and time> localhost system[1]: Failed to start dhcpcd on <mywirelessservice>.
    Failed to start dhcpcd on <mywirelesscervice>.
    <Current date and time> localhost system[1]: Unit dhcpcd@<mywirelessinterface>.service entered failed state.
Когда я запускаю его вручную с помощью sudo su:
    # systemctl start dhcpcd@<mywirelessinterface>.service
это терпит неудачу так же:
      Job for dhcpcd@<mywirelessinterface>.service failed. See ‘systemctl status netctl@<mywirelessinterface>\x2<mynetworkname>.service’ and ‘journalctl –xn’ for details.
Вот что говорит журнал:
    # journalctl -xn
    -- Logs begin at <date, time>, end at <date, time>. --
    <Current date and time> localhost dhcpcd[4366]: <mywirelessinterface> failed to start wpa_supplicant
    <Current date and time> localhost dhcpcd[4367]: <mywirelessinterface> sucessfully initialized wpa_supplicant
    Line 1062: unknown EAP method 'SIM'. You may need to add support for this EAP method during wpa_supplicant build time configuration. See README for more information.
    Line 1062: failed to parse eap 'SIM'.
    Line 1065: failed to parse network block.
    Line 1072: unknown EAP method 'PSK'. You may need to add support for this EAP method during wpa_supplicant build time configuration. See README for more information.
    Line 1072: failed to parse eap 'PSK'.
    Line 1076: failed to parse network block.
    Line 1108: unknown EAP method 'IKEV2'. You may need to add support for this EAP method during wpa_supplicant build time configuration. See README for more information.
    Line 1108: failed to parse eap 'IKEV2'.
    Line 1111: failed to parse network block.
    Failed to read or parse configuration 'etc/wpa_supplicant/wpa_supplicant.conf'.
    <Current date and time> localhost dhcpcd[213]: <mywirelessinterface>: waiting for carrier
    <Current date and time> localhost dhcpcd[213]: <myotherinterface>: waiting for carrier
    <Current date and time> localhost dhcpcd[213]: control command: /usr/sbin/dhcpcd -k <myotherinterface>
    <Current date and time> localhost dhcpcd[213]: <myotherinterface> removing interface
    <Current date and time> localhost kernel: IPv6: ADDRCONF(NETDEV_UP): <mywirelessinterface>: link is not ready
    <Current date and time> localhost kernel: ieee80211 phy0: rt2800usb_entry_txstatus_timeout: Warning - TX status timeout for entry 10 in queue 0
    <Current date and time> localhost kernel: ieee80211 phy0: rt2800usb_entry_txstatus_timeout: Warning - TX status timeout for entry 10 in queue 0
    <Current date and time> localhost kernel: ieee80211 phy0: rt2800usb_entry_txstatus_timeout: Warning - TX status timeout for entry 10 in queue 0
Я попробовал IP ссылку, IW Dev
     ip link set <mywirelessinterface> up
Не помогло. Я еще не играл с /etc/dhcpcd.conf, и я не знаю, существует ли файл конфигурации wpa_supplicant. Я просто еще не знаю, кто они. Помогите!!!
