Ubuntu 16,04 on an HP Laptop with a RealTek wi-fi adapter. When ubuntu 16.04 first installed, had to follow the procedure in thread https://ubuntuforums.org/showthread.php?t=2419146 to get the adapter to work. Everything was working fine until I tried to run Boot Repair from CDROM (unrelated problem). I couldn't get the laptop to boot the CD. I tried switching legacy mode off in the bios, and it still wouldn't boot. I then re-enabled legacy mode and booted back into ununtu. That's when I saw that I had no wi-fi with networking enabled. Booted into ******* to see if the adapter was working - it was. Booted back into ubuntu. This is what I got from ifconfig:
Then tried ifup (as root):Code:$ ifconfig enp2s0 Link encap:Ethernet HWaddr c4:65:16:92:40:53 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:5584 errors:0 dropped:0 overruns:0 frame:0 TX packets:3155 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2119376 (2.1 MB) TX bytes:522208 (522.2 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:1255 errors:0 dropped:0 overruns:0 frame:0 TX packets:1255 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:109995 (109.9 KB) TX bytes:109995 (109.9 KB)
Next, tried lshw:Code:$ ifup wlo1 Unknown interface wlo1
Grasping at straws, I tried:Code:$ lshw -C network *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: enp2s0 version: 15 serial: c4:65:16:92:40:53 size: 10Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:32 ioport:3000(size=256) memory:f0b04000-f0b04fff memory:f0b00000-f0b03fff *-network UNCLAIMED description: Network controller product: Realtek Semiconductor Co., Ltd. vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: ioport:2000(size=256) memory:f0a00000-f0a0ffff
Here is what I think is relevant output in syslog following boot:Code:$ modprobe rtl8723de modprobe: ERROR: could not insert 'rtl8723de': Required key not available
Code:Aug 17 12:29:50 Laptop kernel: [ 21.711577] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723d_config.bin Aug 17 12:29:50 Laptop kernel: [ 21.770180] media: Linux media interface: v0.10 Aug 17 12:29:50 Laptop kernel: [ 21.778484] Linux video capture interface: v2.00 Aug 17 12:29:50 Laptop kernel: [ 21.781908] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723d_config.bin failed with error -2 Aug 17 12:29:50 Laptop kernel: [ 21.781915] Bluetooth: Necessary config file rtl_bt/rtl8723d_config.bin not found Aug 17 12:29:50 Laptop kernel: [ 21.781915] Aug 17 12:29:50 Laptop kernel: [ 21.781920] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723d_fw.bin Aug 17 12:29:50 Laptop kernel: [ 21.781940] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723d_fw.bin failed with error -2 Aug 17 12:29:50 Laptop kernel: [ 21.781942] Bluetooth: hci0: Failed to load rtl_bt/rtl8723d_fw.bin Aug 17 12:29:50 Laptop kernel: [ 21.806216] uvcvideo: Found UVC 1.00 device HP Webcam (04ca:707d) Aug 17 12:29:50 Laptop kernel: [ 21.812168] snd_hda_intel 0000:00:01.1: Force to non-snoop mode Aug 17 12:29:50 Laptop kernel: [ 21.815685] uvcvideo 2-1:1.0: Entity type for entity Extension 7 was not initialized! Aug 17 12:29:50 Laptop kernel: [ 21.815689] uvcvideo 2-1:1.0: Entity type for entity Processing 2 was not initialized! Aug 17 12:29:50 Laptop kernel: [ 21.815691] uvcvideo 2-1:1.0: Entity type for entity Camera 1 was not initialized! Aug 17 12:29:50 Laptop kernel: [ 21.815692] uvcvideo 2-1:1.0: Entity type for entity Extension 4 was not initialized! Aug 17 12:29:50 Laptop kernel: [ 21.815930] input: HP Webcam: HP Webcam as /devices/pci0000:00/0000:00:10.0/usb2/2-1/2-1:1.0/input/input11 Aug 17 12:29:50 Laptop kernel: [ 21.816605] [drm] {1366x768, 1592x800@76420Khz} Aug 17 12:29:50 Laptop kernel: [ 21.816716] usbcore: registered new interface driver uvcvideo Aug 17 12:29:50 Laptop kernel: [ 21.816717] USB Video Class driver (1.1.1) Aug 17 12:29:50 Laptop kernel: [ 21.823602] [drm] HBRx1 pass VS=0, PE=0 Aug 17 12:29:50 Laptop kernel: [ 21.829124] input: HDA ATI HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.1/sound/card0/input12 Aug 17 12:29:50 Laptop kernel: [ 21.840046] snd_hda_codec_realtek hdaudioC1D0: autoconfig for ALC236: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker Aug 17 12:29:50 Laptop kernel: [ 21.840050] snd_hda_codec_realtek hdaudioC1D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) Aug 17 12:29:50 Laptop kernel: [ 21.840051] snd_hda_codec_realtek hdaudioC1D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0) Aug 17 12:29:50 Laptop kernel: [ 21.840054] snd_hda_codec_realtek hdaudioC1D0: mono: mono_out=0x0 Aug 17 12:29:50 Laptop kernel: [ 21.840055] snd_hda_codec_realtek hdaudioC1D0: inputs: Aug 17 12:29:50 Laptop kernel: [ 21.840500] snd_hda_codec_realtek hdaudioC1D0: Mic=0x19 Aug 17 12:29:50 Laptop kernel: [ 21.840502] snd_hda_codec_realtek hdaudioC1D0: Internal Mic=0x12 Aug 17 12:29:50 Laptop kernel: [ 21.886874] input: HD-Audio Generic Mic as /devices/pci0000:00/0000:00:09.2/sound/card1/input13 Aug 17 12:29:50 Laptop kernel: [ 21.886941] input: HD-Audio Generic Headphone as /devices/pci0000:00/0000:00:09.2/sound/card1/input14 Aug 17 12:29:50 Laptop kernel: [ 21.933991] AVX2 version of gcm_enc/dec engaged. Aug 17 12:29:50 Laptop kernel: [ 21.933994] AES CTR mode by8 optimization enabled Aug 17 12:29:50 Laptop kernel: [ 22.010698] kvm: disabled by bios Aug 17 12:29:50 Laptop kernel: [ 22.014207] MCE: In-kernel MCE decoding enabled. Aug 17 12:29:50 Laptop kernel: [ 22.094548] Bluetooth: hci0: rtl: examining hci_ver=08 hci_rev=000d lmp_ver=08 lmp_subver=8723 Aug 17 12:29:50 Laptop kernel: [ 22.094552] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723d_config.bin Aug 17 12:29:50 Laptop kernel: [ 22.094569] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723d_config.bin failed with error -2 Aug 17 12:29:50 Laptop kernel: [ 22.094572] Bluetooth: Necessary config file rtl_bt/rtl8723d_config.bin not found Aug 17 12:29:50 Laptop kernel: [ 22.094572] Aug 17 12:29:50 Laptop kernel: [ 22.094577] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723d_fw.bin Aug 17 12:29:50 Laptop kernel: [ 22.094585] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723d_fw.bin failed with error -2 Aug 17 12:29:50 Laptop kernel: [ 22.094586] Bluetooth: hci0: Failed to load rtl_bt/rtl8723d_fw.bin
Coincidentally (?), I bought this Laptop because the adapter on my old HP laptop stopped working similarly (it was time and I was looking for an excuse). After a while (many days) it started working again.
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