I have a Hp Dc77 tower that I have Mint 17.2 I been using the wifi wireless for some time ,but now its not recognizing any wifi hardware . I tried to go into driver manager ,but it was blank. If I use a live DVD I will get a wireless connection. I also tried to add some drivers from software manager but to no help. Im thinking when I did an update it somehow disabled the wireless driver. Any and all help will be appreciated.

Hi:

I'm not good with fixing the wifi stuff sorry. Getting information about your system will be one of the first things our members here will need from you in order to help.

When you have time please post the output of this command.

To check on the status of your wifi you would use this command.

This might help:

https://sites.google.com/site/easyli...oject/internet

Thanks I will post them tomorrow when I'm free , thanks.

You're Welcome:-

If it's still not working, please let us know what wireless chipset is in that machine. The lspci command should provide that information.

I must say, that it used to work and stopped and that it still works with a Live CD tends to indicate that something has gone awry with the installed OS.

output of pc.

ch@ch-desktop ~ $ inxi-Fxz
inxi-Fxz: command not found
ch@ch-desktop ~ $ inxi -Fxz
System: Host: ch-desktop Kernel: 4.4.0-135-generic i686 (32 bit, gcc: 4.8.4)
Desktop: MATE 1.10.2 Distro: Linux Mint 17.2 Rafaela
Machine: Mobo: Intel model: DQ965GF version: AAD41676-601
Bios: Intel version: CO96510J.86A.5773.2007.0206.0046 date: 02/06/2007
CPU: Dual core Intel Core2 CPU 6600 (-MCP-) cache: 4096 KB flags: (lm nx pae sse sse2 sse3 ssse3 vmx) bmips: 9590.6
Clock Speeds: 1: 2394.00 MHz 2: 2394.00 MHz
Graphics: Card: Intel 82Q963/Q965 Integrated Graphics Controller bus-ID: 00:02.0
X.Org: 1.15.1 drivers: intel (unloaded: fbdev,vesa) Resolution: 1680x1050@74.9hz
GLX Renderer: Mesa DRI Intel 965Q x86/MMX/SSE2 GLX Version: 2.1 Mesa 10.1.3 Direct Rendering: Yes
Audio: Card: Intel 82801H (ICH8 Family) HD Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture ver: k4.4.0-135-generic
Network: Card-1: Intel 82566DM Gigabit Network Connection driver: e1000e ver: 3.2.6-k port: 20c0 bus-ID: 00:19.0
IF: eth0 state: up speed: 100 Mbps duplex: full mac: <filter>
Card-2: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) driver: ath9k bus-ID: 04:00.0
IF: wlan3 state: down mac: <filter>
Drives: HDD Total Size: 1000.2GB (15.6% used) 1: id: /dev/sda model: HUA722010CLA330 size: 1000.2GB
Partition: ID: / size: 915G used: 146G (17%) fs: ext4 ID: swap-1 size: 2.13GB used: 0.00GB (0%) fs: swap
RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors: System Temperatures: cpu: 58.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 176 Uptime: 6 min Memory: 586.9/1996.0MB Runlevel: 2 Gcc sys: 4.8.4
Client: Shell (bash 4.3.11) inxi: 1.9.17
ch@ch-desktop ~ $

Wifi status.

ch@ch-desktop ~ $ iwconfig
wlan3 IEEE 802.11bgn ESSIDff/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry short limit:7 RTS thrff Fragment thrff
Power Managementff

lo no wireless extensions.

eth0 no wireless extensions.

ch@ch-desktop ~ $

ch@ch-desktop ~ $ iwconfig
wlan3 IEEE 802.11bgn ESSIDff/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry short limit:7 RTS thrff Fragment thrff
Power Managementff

lo no wireless extensions.

eth0 no wireless extensions.

ch@ch-desktop ~ $

Here's your wireless network card:
From the looks of it, it uses the ath9k driver that the kernel should be using.

Does a Live Linux CD allow you to go online?

What do you recommend?

When on a Mint Laptop. I find the

command useful for me to troubleshoot wifi problems in Mint Linux.

Also. wlan3 better be somewhere in Mints Network manager settings.

Yes with a live DVD I can go online wireless.

Than like frankbell said something has gone awry with your installed os.

Have you considered a fresh installation of Linux Mint 19?