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Old 09-28-2016, 05:46 PM   #16
c0wb0y
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Try this:
find /lib/modules/`uname -r` -type f -name 'rtl*'

Try modprobe'ing the modules found. If successful, issue 'ip addr' to see if the new device was recognized.
 
Old 09-28-2016, 06:10 PM   #17
Shadow_7
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Probably

linux-headers-generic-lts-vivid

and

linux-image-generic-lts-vivid

based on that list. The compiled from source module will happen against the currently running kernel by default. So reboot to the new kernel if this is a change.

$ uname -r

To see what you're currently running. Although past logs would suggest 3.19.x although it's not working for you in terms of wireless.
 
Old 09-29-2016, 11:18 AM   #18
Abhishek112525
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I ran these commands

$ sudo apt-get install linux-headers-generic-lts-vivid
$ sudo apt-get install linux-image-generic-lts-vivid

$ mkdir temp_wifi
$ cd temp_wifi
$ git clone https://github.com/lwfinger/rtlwifi_new
$ cd rtlwifi_new
$ make
$ sudo make install
$ sudo shutdown -r now

But still after rebooting I am not getting my wifi-option

My uname -r shows
3.19.0-69-generic

What should I do next?
 
Old 09-29-2016, 11:59 AM   #19
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$ lspci -nnk

$ lsusb

$ dmesg | grep -i rtl

$ sudo ifconfig -a

See what's happening basically.

$ sudo apt-get install --reinstall linux-headers-generic-lts-vivid
$ sudo apt-get install --reinstall linux-image-generic-lts-vivid

And add --reinstall so it replaces what is currently there with the distro version. Versus does nothing if it see's that it's already installed. There was previously a mismatch between the rlt87* module and the existing kernel, reinstalling should reset that to the distro's flavor of the month. Which hopefully fixes at least one of your issues.
 
Old 09-29-2016, 12:29 PM   #20
Abhishek112525
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lspci -nnk
Code:
00:00.0 Host bridge [0600]: Intel Corporation Broadwell-U Host Bridge -OPI [8086:1604] (rev 09)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: i915_bpo
00:03.0 Audio device [0403]: Intel Corporation Broadwell-U Audio Controller [8086:160c] (rev 09)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: snd_hda_intel
00:04.0 Signal processing controller [1180]: Intel Corporation Broadwell-U Camarillo Device [8086:1603] (rev 09)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: proc_thermal
00:14.0 USB controller [0c03]: Intel Corporation Wildcat Point-LP USB xHCI Controller [8086:9cb1] (rev 03)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: xhci_hcd
00:16.0 Communication controller [0780]: Intel Corporation Wildcat Point-LP MEI Controller #1 [8086:9cba] (rev 03)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: mei_me
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 [8086:9c90] (rev e3)
	Kernel driver in use: pcieport
00:1c.1 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #2 [8086:9c92] (rev e3)
	Kernel driver in use: pcieport
00:1c.2 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 [8086:9c94] (rev e3)
	Kernel driver in use: pcieport
00:1c.3 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 [8086:9c96] (rev e3)
	Kernel driver in use: pcieport
00:1c.4 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 [8086:9c98] (rev e3)
	Kernel driver in use: pcieport
00:1f.0 ISA bridge [0601]: Intel Corporation Wildcat Point-LP LPC Controller [8086:9cc3] (rev 03)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: lpc_ich
00:1f.2 SATA controller [0106]: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] [8086:9c83] (rev 03)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: ahci
00:1f.3 SMBus [0c05]: Intel Corporation Wildcat Point-LP SMBus Controller [8086:9ca2] (rev 03)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
08:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
	Subsystem: Hewlett-Packard Company Device [103c:804c]
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 0a)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
	Kernel driver in use: r8169
0a:00.0 3D controller [0302]: NVIDIA Corporation GM108M [GeForce 940M] [10de:1347] (rev a2)
	Subsystem: Hewlett-Packard Company Device [103c:8096]
lsusb
Code:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0bda:b006 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 064e:930a Suyin Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dmesg | grep -i rtl
Code:
[    0.852559] r8169 0000:09:00.0 eth0: RTL8107e at 0xffffc90000cf8000, 3c:a8:2a:aa:db:4b, XID 14100800 IRQ 49
[   15.189611] rtlwifi: module verification failed: signature and/or  required key missing - tainting kernel
[   15.262231] rtl8723be: Unknown symbol rtl_get_hwinfo (err 0)
[ 9418.861334] rtl8723be: Unknown symbol rtl_get_hwinfo (err 0)
[ 9654.070428] rtl8723be: Unknown symbol rtl_get_hwinfo (err 0)
[11523.349486] Modules linked in: msr cuse rfcomm bnep binfmt_misc nls_iso8859_1 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media btusb bluetooth btcoexist(OE) rtl_pci(OE) rtlwifi(OE) snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic mac80211 hp_wmi sparse_keymap snd_hda_intel snd_hda_controller cfg80211 snd_hda_codec snd_hwdep intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul snd_seq_midi crc32_pclmul snd_seq_midi_event snd_rawmidi aesni_intel aes_x86_64 lrw gf128mul glue_helper nouveau ablk_helper cryptd snd_pcm joydev serio_raw mxm_wmi snd_seq ttm snd_seq_device snd_timer lpc_ich snd i915_bpo shpchp mei_me mei processor_thermal_device soundcore intel_ips drm_kms_helper drm i2c_algo_bit 8250_fintek wmi hp_accel video int3400_thermal lis3lv02d acpi_thermal_rel hp_wireless input_polldev acpi_pad mac_hid parport_pc ppdev lp parport uas usb_storage psmouse ahci r8169 libahci mii
sudo ifconfig -a
Code:
 
eth0      Link encap:Ethernet  HWaddr 3c:a8:2a:aa:db:4b  
          inet addr:10.6.64.60  Bcast:10.6.95.255  Mask:255.255.224.0
          inet6 addr: fe80::3ea8:2aff:feaa:db4b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:254563 errors:0 dropped:0 overruns:0 frame:0
          TX packets:101080 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:187651810 (187.6 MB)  TX bytes:10126010 (10.1 MB)

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:3263 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3263 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:628529 (628.5 KB)  TX bytes:628529 (628.5 KB)
sudo apt-get install --reinstall linux-headers-generic-lts-vivid
Code:
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B/2,324 B of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 356932 files and directories currently installed.)
Preparing to unpack .../linux-headers-generic-lts-vivid_3.19.0.69.51_amd64.deb ...
Unpacking linux-headers-generic-lts-vivid (3.19.0.69.51) over (3.19.0.69.51) ...
Setting up linux-headers-generic-lts-vivid (3.19.0.69.51) ...
sudo apt-get install --reinstall linux-image-generic-lts-vivid
Code:
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B/2,346 B of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 356932 files and directories currently installed.)
Preparing to unpack .../linux-image-generic-lts-vivid_3.19.0.69.51_amd64.deb ...
Unpacking linux-image-generic-lts-vivid (3.19.0.69.51) over (3.19.0.69.51) ...
Setting up linux-image-generic-lts-vivid (3.19.0.69.51) ...
 
Old 09-30-2016, 10:04 AM   #21
Shadow_7
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reboot after --reinstall and check again. Or reboot into one of the many other kernels you have installed. TBH, a fresh install would probably solve your issue in a fraction of the time.

$ sudo shutdown -r now

$ lsmod | grep -i rtl

$ sudo ifconfig -a
 
Old 09-30-2016, 12:19 PM   #22
Abhishek112525
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Even after reinstall and reboot, I am not getting wifi. I ran the following commands:-

sudo apt-get install --reinstall linux-headers-generic-lts-vivid
sudo apt-get install --reinstall linux-image-generic-lts-vivid
sudo shutdown -r now

lsmod | grep -i rtl
Code:
rtl_pci                40960  0 
rtlwifi               102400  2 btcoexist,rtl_pci
mac80211              720896  2 rtl_pci,rtlwifi
cfg80211              532480  2 mac80211,rtlwifi
sudo ifconfig -a
Code:
 
eth0      Link encap:Ethernet  HWaddr 3c:a8:2a:aa:db:4b  
          inet addr:10.6.64.60  Bcast:10.6.95.255  Mask:255.255.224.0
          inet6 addr: fe80::3ea8:2aff:feaa:db4b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1760 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1263 errors:0 dropped:47 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1788882 (1.7 MB)  TX bytes:172725 (172.7 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:1589 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1589 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:139469 (139.4 KB)  TX bytes:139469 (139.4 KB)
 
  


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