HP Probook 455 G2 Wifi Not Detecting [Solved]

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Jenks

HP Probook 455 G2 Wifi Not Detecting [Solved]

Post by Jenks »

I've had the laptop for a couple of months and tried many times to find a working solution, I'm pretty sure it's an issue with the 'rtl8723be' wireless card however all the solutions that have worked for other people don't seem to make the slightest bit of difference. The laptop shipped with a modified version of ubuntu 12 (I think...) which had working wifi.

I have tried pretty much all the solutions available, sadly I don't remember them all. But I know that I have tried lwfinger's solution as well as updating(and downgrading) my kernel.

inxi -Fxz

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System:    Host: Jenks-Laptop Kernel: 3.16.0-38-generic x86_64 (64 bit, gcc: 4.8.2) 
           Desktop: Cinnamon 2.6.11  Distro: Linux Mint 17.2 Rafaela
Machine:   System: Hewlett-Packard product: HP ProBook 455 G2 version: A3009CD10002
           Mobo: Hewlett-Packard model: 2235 version: KBC Version 66.20
           Bios: Hewlett-Packard version: M75 Ver. 01.30 date: 03/10/2015
CPU:       Quad core AMD A10-7300 Radeon R6 10 Compute Cores 4C+6G (-MCP-) cache: 8192 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 15171.6 
           Clock Speeds: 1: 1100.00 MHz 2: 1100.00 MHz 3: 1100.00 MHz 4: 1100.00 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Kaveri bus-ID: 00:01.0 
           X.Org: 1.15.1 drivers: ati,radeon (unloaded: fbdev,vesa) Resolution: 1366x768@60.0hz 
           GLX Renderer: Gallium 0.4 on AMD KAVERI GLX Version: 3.0 Mesa 10.1.3 Direct Rendering: Yes
Audio:     Card-1: Advanced Micro Devices [AMD] FCH Azalia Controller driver: snd_hda_intel bus-ID: 00:14.2 
           Card-2: Advanced Micro Devices [AMD/ATI] Device 1308 driver: snd_hda_intel bus-ID: 00:01.1 
           Sound: Advanced Linux Sound Architecture ver: k3.16.0-38-generic
Network:   Card-1: Realtek RTL8723BE PCIe Wireless Network Adapter driver: rtl8723be port: 3000 bus-ID: 02:00.0
           IF: wlan0 state: down mac: <filter>
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller 
           driver: r8169 ver: 2.3LK-NAPI port: 4000 bus-ID: 01:00.0
           IF: eth0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 1015.8GB (0.7% used) 1: id: /dev/sda model: HGST_HTS541010A9 size: 1000.2GB 
           2: USB id: /dev/sdb model: DataTraveler_2.0 size: 15.6GB 
Partition: ID: / size: 910G used: 4.7G (1%) fs: ext4 ID: swap-1 size: 7.46GB used: 0.00GB (0%) fs: swap 
RAID:      No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors:   System Temperatures: cpu: 45.4C mobo: 0.0C gpu: 45.0 
           Fan Speeds (in rpm): cpu: N/A 
Info:      Processes: 185 Uptime: 4 min Memory: 463.8/6858.7MB Runlevel: 2 Gcc sys: 4.8.2 
           Client: Shell (bash 4.3.11) inxi: 1.9.17
sudo /usr/lib/linuxmint/mintWifi/mintWifi.py

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-------------------------
* I. scanning WIFI PCI devices...
  -- Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
      ==> PCI ID = 10ec:b723
-------------------------
* II. querying ndiswrapper...
-------------------------
* III. querying iwconfig...
eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:off
          
lo        no wireless extensions.

-------------------------
* IV. querying ifconfig...
eth0      Link encap:Ethernet  HWaddr d0:bf:9c:59:67:07  
          inet addr:192.168.1.18  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fd8c:34fd:8ad6:5500:e45a:ccf3:ca1e:fbf6/64 Scope:Global
          inet6 addr: fd8c:34fd:8ad6:5500:d2bf:9cff:fe59:6707/64 Scope:Global
          inet6 addr: fe80::d2bf:9cff:fe59:6707/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:19031 errors:0 dropped:0 overruns:0 frame:0
          TX packets:179 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1165860 (1.1 MB)  TX bytes:24569 (24.5 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:151 errors:0 dropped:0 overruns:0 frame:0
          TX packets:151 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:11292 (11.2 KB)  TX bytes:11292 (11.2 KB)

wlan0     Link encap:Ethernet  HWaddr 74:29:af:61:be:63  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

-------------------------
* V. querying DHCP...
RTNETLINK answers: File exists
-------------------------
* VI. querying nslookup google.com...
Server:		192.168.1.1
Address:	192.168.1.1#53

Non-authoritative answer:
Name:	google.com
Address: 216.58.210.14
lspci -nnk | grep -iA2 net

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01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
	Subsystem: Hewlett-Packard Company Device [103c:2235]
	Kernel driver in use: r8169
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
	Subsystem: Hewlett-Packard Company Device [103c:2231]
	Kernel driver in use: rtl8723be
Any help would be appreciated.

SOLUTION:
JeremyB wrote:This might be the only thing that works

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echo "options rtl8723be msi=1" | sudo tee -a /etc/modprobe.d/rtl8723be.conf

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sudo modprobe -r rtl8723be

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sudo modprobe rtl8723be
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 4 times in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
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dhwalker
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by dhwalker »

I seem to be having similar problems with the rtl8723be, on an HP Pavillion 15-ab053nr. The NIC works, but the signal is very weak; it only works if I'm within a few feet of the access point.
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Pjotr
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by Pjotr »

This should fix the RTL8723BE driver:
https://sites.google.com/site/easylinux ... BE-chipset
(item 3, left column)
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Jenks

Re: HP Probook 455 G2 Wifi Not Detecting

Post by Jenks »

Pjotr wrote:This should fix the RTL8723BE driver:
https://sites.google.com/site/easylinux ... BE-chipset
(item 3, left column)
Unfortunately this hasnt seemed to make any difference at all, the wifi still picks up nothing.
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JeremyB
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by JeremyB »

Please post the results of

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lspci -nnk | grep -iA2 net
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Jenks

Re: HP Probook 455 G2 Wifi Not Detecting

Post by Jenks »

JeremyB wrote:Please post the results of

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lspci -nnk | grep -iA2 net

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01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
	Subsystem: Hewlett-Packard Company Device [103c:2235]
	Kernel driver in use: r8169
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
	Subsystem: Hewlett-Packard Company Device [103c:2231]
	Kernel driver in use: rtl8723be
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dhwalker
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by dhwalker »

Jenks wrote:
Pjotr wrote:This should fix the RTL8723BE driver:
https://sites.google.com/site/easylinux ... BE-chipset
(item 3, left column)
Unfortunately this hasnt seemed to make any difference at all, the wifi still picks up nothing.
Didn't work for me, either.
David Walker
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dhwalker
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by dhwalker »

Pjotr wrote:This should fix the RTL8723BE driver:
https://sites.google.com/site/easylinux ... BE-chipset
(item 3, left column)
$ lspci -nnk | grep -iA2 net
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
Subsystem: Hewlett-Packard Company Device [103c:80af]
Kernel driver in use: r8169
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Hewlett-Packard Company Device [103c:804c]
Kernel driver in use: rtl8723be
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JeremyB
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by JeremyB »

This might be the only thing that works

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echo "options rtl8723be msi=1" | sudo tee -a /etc/modprobe.d/rtl8723be.conf

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sudo modprobe -r rtl8723be

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sudo modprobe rtl8723be
Last edited by JeremyB on Sun Aug 30, 2015 8:07 am, edited 1 time in total.
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Jenks

Re: HP Probook 455 G2 Wifi Not Detecting

Post by Jenks »

JeremyB wrote:This might be the only thing that works

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echo "options rtl8723be msi=1" | sudo tee -a /etc/modprobe.d/rtl8723be.conf

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sudo modprobe -r rtl8723be

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sudo modprobe rtl8723b3

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jenks@Jenks-Laptop ~ $     echo "options rtl8723be msi=1" | sudo tee -a /etc/modprobe.d/rtl8723be.conf
[sudo] password for jenks: 
options rtl8723be msi=1
jenks@Jenks-Laptop ~ $     sudo modprobe -r rtl8723be
jenks@Jenks-Laptop ~ $     sudo modprobe rtl8723b3
modprobe: FATAL: Module rtl8723b3 not found.
jenks@Jenks-Laptop ~ $ sudo modprobe rtl8723be
I'm assuming the last command was a typo, in which case it doesn't appear to have made any difference.

EDIT:
Seems like a restart did the trick, I can now connect to networks! :D

Thanks for the help.
Last edited by Jenks on Sun Aug 30, 2015 8:14 am, edited 1 time in total.
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JeremyB
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Re: HP Probook 455 G2 Wifi Not Detecting

Post by JeremyB »

Fixed typo. Follow instructions to set the regulatory info from chili555 post http://ubuntuforums.org/showthread.php? ... st13092185
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