最近，syslog每隔几秒钟，我就会收到这些信息：
Aug 13 16:02:15 lati dhclient: DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 15 (xid=0x204c0015)
Aug 13 16:02:15 lati dhclient: send_packet: No such device or address
Aug 13 16:02:15 lati dhclient: dhclient.c:2038: Failed to send 300 byte long packet over wlan2 interface.
Aug 13 16:02:30 lati dhclient: DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 12 (xid=0x204c0015)
Aug 13 16:02:30 lati dhclient: send_packet: No such device or address
Aug 13 16:02:30 lati dhclient: dhclient.c:2038: Failed to send 300 byte long packet over wlan2 interface.
Aug 13 16:02:42 lati dhclient: DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 14 (xid=0x204c0015)
Aug 13 16:02:42 lati dhclient: send_packet: No such device or address
Aug 13 16:02:42 lati dhclient: dhclient.c:2038: Failed to send 300 byte long packet over wlan2 interface.
Aug 13 16:02:56 lati dhclient: DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 9 (xid=0x204c0015)
Aug 13 16:02:56 lati dhclient: send_packet: No such device or address
Aug 13 16:02:56 lati dhclient: dhclient.c:2038: Failed to send 300 byte long packet over wlan2 interface.
Aug 13 16:03:05 lati dhclient: DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 11 (xid=0x204c0015)
Aug 13 16:03:05 lati dhclient: send_packet: No such device or address
Aug 13 16:03:05 lati dhclient: dhclient.c:2038: Failed to send 300 byte long packet over wlan2 interface.
Aug 13 16:03:16 lati dhclient: DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 20 (xid=0x204c0015)
Aug 13 16:03:16 lati dhclient: send_packet: No such device or address
Aug 13 16:03:16 lati dhclient: dhclient.c:2038: Failed to send 300 byte long packet over wlan2 interface.
我通过 wifi 连接到路由器，目前互联网连接似乎正常。
这是我的网络配置：
[connection]
id=Olez
uuid=#####
type=802-11-wireless
timestamp=1466575089
[802-11-wireless]
ssid=Olez
mode=infrastructure
mac-address=#####
seen-bssids=#####;
security=802-11-wireless-security
[802-11-wireless-security]
key-mgmt=wpa-psk
psk=#####
[ipv4]
method=auto
[ipv6]
method=auto
我应该担心这个吗？我能做些什么来解决这个问题吗？这可能是路由器的问题吗？
我的系统信息：
- Ubuntu 14.04.5 LTS（值得信赖）
- 架构：64 位
- 内核版本：3.16.0-40-generic
- 戴尔 E7440
- BIOS 版本：A14
我的网络信息：
*-network
description: Ethernet interface
product: Ethernet Connection I218-LM
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eth2
version: 04
serial: ec:f4:bb:55:4f:c5
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=0.7-3 latency=0 link=no multicast=yes port=twisted pair
resources: irq:59 memory:f7e00000-f7e1ffff memory:f7e3c000-f7e3cfff ioport:f080(size=32)
*-network
description: Wireless interface
product: Wireless 7260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan2
version: 73
serial: f8:16:54:0c:6d:31
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.16.0-40-generic firmware=25.228.9.0 ip=10.0.0.29 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:63 memory:f7d00000-f7d01fff
结果dmesg | grep -i firmware是
[ 0.126773] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 3.241202] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq
[ 3.242375] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
[ 3.435452] Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated
[11374.953742] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
答案1
我建议您首先尝试升级设备的固件。在网络连接正常的情况下，打开终端并执行以下操作：
wget http://mirrors.kernel.org/ubuntu/pool/main/l/linux-firmware/linux-firmware_1.161_all.deb
sudo dpkg -i linux-firmware*.deb
重新启动并让我们知道性能是否有所改善。