networking - Qualcomm Atheros Device [168c:0042] (rev 30) ubuntu 16.04 - Ask Ubuntu

i have lenovo i310 running ubuntu 16.04 (kernel 4.4). wifi works if follow odd procedure:

• switch on laptop

• press few seconds power button

• switch on laptop again

the hardware switch on. wifi enabled in bios.

differences noticed far.

command: lspci -nnv |grep ualcom

when wi-fi not working:

02:00.0 ethernet controller [0200]: qualcomm atheros device [168c:abcd] (rev 01) 

when wi-fi working:

02:00.0 network controller [0280]: qualcomm atheros device [168c:0042] (rev 30) 

command: rfkill list.

when wi-fi not working:

0: ideapad_wlan: wireless lan   soft blocked: no   hard blocked: no   1: ideapad_bluetooth: bluetooth   soft blocked: yes   hard blocked: no 

when wi-fi working:

0: ideapad_wlan: wireless lan   soft blocked: no   hard blocked: no   1: ideapad_bluetooth: bluetooth   soft blocked: yes   hard blocked: no   2: hci0: bluetooth   soft blocked: yes   hard blocked: no   3: phy0: wireless lan   soft blocked: no   hard blocked: no 

edit 1:

command: lsmod | grep ath

when not working: no output

when working:

ath10k_pci             45056  0   ath10k_core           311296  1 ath10k_pci   ath                    32768  1 ath10k_core   mac80211              737280  1 ath10k_core   cfg80211              565248  3 ath,mac80211,ath10k_core  

edit 2:

command: dmesg | grep ath

output when not working: no output

output when working:

[    9.243817] ath10k_pci 0000:02:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0   [    9.486944] ath10k_pci 0000:02:00.0: direct firmware load ath10k/cal-pci-0000:02:00.0.bin failed error -2   [   11.457948] ath10k_pci 0000:02:00.0: qca9377 hw1.0 (0x05020000, 0x003820ff sub 17aa:4035) fw wlan.tf.1.0-00267-1 fwapi 5 bdapi 2 htt-ver 3.1 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1 features ignore-otp   [   11.457951] ath10k_pci 0000:02:00.0: debug 0 debugfs 1 tracing 1 dfs 0 testmode 0   [   11.459947] ath: eeprom regdomain: 0x6c   [   11.459950] ath: eeprom indicates should expect direct regpair map   [   11.459951] ath: country alpha2 being used: 00   [   11.459952] ath: regpair used: 0x6c   [   11.465771] ath10k_pci 0000:02:00.0 wlp2s0: renamed wlan0   [   14.008726] ath10k_pci 0000:02:00.0: no channel configured; ignoring frame(s)!   

edit 3:

command: dmesg | grep 02:00

output when not working:

[    0.209512] pci 0000:02:00.0: [168c:abcd] type 00 class 0x020000 [    0.209554] pci 0000:02:00.0: reg 0x10: [mem 0xa1000000-0xa11fffff 64bit] [    0.209668] pci 0000:02:00.0: supports d1 [    0.209669] pci 0000:02:00.0: pme# supported d0 d1 d3hot d3cold [    0.209720] pci 0000:02:00.0: system wakeup disabled acpi [    0.865508] pci 0000:02:00.0: signaling pme through pcie pme interrupt 

output when working:

[    0.206106] pci 0000:02:00.0: [168c:0042] type 00 class 0x028000   [    0.206181] pci 0000:02:00.0: reg 0x10: [mem 0xa1000000-0xa11fffff 64bit]   [    0.206388] pci 0000:02:00.0: pme# supported d0 d3hot d3cold   [    0.206471] pci 0000:02:00.0: system wakeup disabled acpi   [    0.862590] pci 0000:02:00.0: signaling pme through pcie pme interrupt   [    7.131821] ath10k_pci 0000:02:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0   [    7.416193] ath10k_pci 0000:02:00.0: direct firmware load ath10k/cal-pci-0000:02:00.0.bin failed error -2   [    9.380874] ath10k_pci 0000:02:00.0: qca9377 hw1.0 (0x05020000, 0x003820ff sub 17aa:4035) fw wlan.tf.1.0-00267-1 fwapi 5 bdapi 2 htt-ver 3.1 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1 features ignore-otp   [    9.380878] ath10k_pci 0000:02:00.0: debug 0 debugfs 1 tracing 1 dfs 0 testmode 0   [    9.391091] ath10k_pci 0000:02:00.0 wlp2s0: renamed wlan0   

your lsmod suggests driver module isn't loading automagically expected. let's give little push. terminal:

sudo -i echo ath10k_pci  >>  /etc/modules exit 

reboot , test.