root@satish-G41M-Combo:~# lspci -knn
00:00.0 Host bridge [0600]: Intel Corporation 4 Series Chipset DRAM Controller [8086:2e30] (rev 03)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5000]
Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000]
Kernel driver in use: i915
00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:a000]
Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 1 [8086:27d0] (rev 01)
Kernel driver in use: pcieport
00:1c.1 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 2 [8086:27d2] (rev 01)
Kernel driver in use: pcieport
00:1d.0 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 [8086:27c8] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd GA-D525TUD [1458:5004]
Kernel driver in use: uhci_hcd
00:1d.1 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 [8086:27c9] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd GA-D525TUD [1458:5004]
Kernel driver in use: uhci_hcd
00:1d.2 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 [8086:27ca] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd GA-D525TUD [1458:5004]
Kernel driver in use: uhci_hcd
00:1d.3 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 [8086:27cb] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd GA-D525TUD [1458:5004]
Kernel driver in use: uhci_hcd
00:1d.7 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller [8086:27cc] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd GA-D525TUD [1458:5006]
Kernel driver in use: ehci-pci
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev e1)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge [8086:27b8] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5001]
Kernel driver in use: lpc_ich
00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:b001]
Kernel driver in use: ata_piix
00:1f.2 IDE interface [0101]: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] [8086:27c0] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:b002]
Kernel driver in use: ata_piix
00:1f.3 SMBus [0c05]: Intel Corporation NM10/ICH7 Family SMBus Controller [8086:27da] (rev 01)
Subsystem: Gigabyte Technology Co., Ltd GA-8I945PG-RH/GA-D525TUD Mainboard [1458:5001]
02:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8151 v1.0 Gigabit Ethernet [1969:1073] (rev c0)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:e000]
Kernel driver in use: atl1c
答案1
检查无线是否被物理硬件开关禁用。在这种情况下，运行以下命令，检查无线是被软阻止还是硬阻止：-
himanshu_code@ubuntu15:~$ sudo rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hp-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
检查wifi是软封还是硬封，然后运行以下命令：
himanshu_code@ubuntu15:~$ sudo rfkill unblock <identity>
在我的情况下是 1
himanshu_code@ubuntu15:~$ sudo rfkill unblock 1
重新启动系统。