I have an HP Probook 455 G2 with a Realtek RTL8723BE wireless card. Restarting the network manager doesn't do anything. The Probook also has a hard button to toggle the wireless off and on. I've checked that as well. It doesn't do anything. When I check wireless from the tool tray icon no wireless access points show up.
This is a fix I've used before, which I found on Stack Exchange. Up until 18.04 I was able to follow the instructions in Stack Exchange's answer to this question here - How do I get a Realtek RTL8723BE wireless card to work?. That fix worked very well, but I'm being blocked on the newest LTS.
I cannot use these instructions with 18.04 because of apt-secure. Can you help me either get around apt-secure so I can add the repository or help me get the card to work in another way? This is what I get when I try to add the repository in Bionic Beaver: .....
Err:28 http://ppa.launchpad.net/hanipouspilot/rtlwifi/ubuntu Xenial Release 404 Not Found [IP: 18.104.22.168 80] Err:29 http://ppa.launchpad.net/hanipouspilot/rtlwifi/ubuntu bionic Release 404 Not Found [IP: 22.214.171.124 80] Reading package lists... Done E: The repository 'http://ppa.launchpad.net/hanipouspilot/rtlwifi/ubuntu Xenial Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://ppa.launchpad.net/hanipouspilot/rtlwifi/ubuntu bionic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
Here is the information on my card:
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@0000:01:00.0 logical name: enp1s0 version: 10 serial: (redacted) size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd 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=full firmware=rtl8168g-3_0.0.1 04/23/13 ip=10.1.105.62 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:35 ioport:4000(size=256) memory:d5804000-d5804fff memory:d5800000-d5803fff *-network description: Wireless interface product: RTL8723BE PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: wlo1 version: 00 serial: (redacted) width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl8723be driverversion=4.15.0-20-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11 resources: irq:40 ioport:3000(size=256) memory:d4800000-d4803fff
Any advice you can give me would be appreciated.