Anoche mismo instalé Linux Mint Tara, y todo perfecto, sin problema ninguno. Instalé el cliente para Telegram y el Dropbox y me fui a dormir. Hoy al levantarme y volver a encender el equipo resulta que no se conecta a la red wifi y tampoco detecta ninguna señal, por lo que he tenido que tirar de un adaptador wifi usb. Probé reiniciando el servicio de "network-manager", pero no solucionada nada y tampoco sé muy bien por donde empezar a investigar.
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System: Host: pc Kernel: 4.15.0-30-generic x86_64 bits: 64 gcc: 7.3.0
Desktop: Cinnamon 3.8.8 (Gtk 3.22.30-1ubuntu1)
Distro: Linux Mint 19 Tara
Machine: Device: laptop System: TOSHIBA product: SATELLITE C55D-C v: PSCQEE-003003CE serial: N/A
Mobo: AMD model: Gardenia serial: N/A
UEFI [Legacy]: Insyde v: 1.00 date: 04/13/2015
Battery BAT1: charge: 31.1 Wh 79.9% condition: 38.9/44.1 Wh (88%)
model: Panasonic PA5186U-1BRS status: N/A
CPU: Quad core AMD A8-7410 APU with AMD Radeon R5 Graphics (-MCP-)
arch: Puma rev.1 cache: 2048 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 17567
clock speeds: max: 2200 MHz 1: 1370 MHz 2: 1460 MHz 3: 1474 MHz
4: 1371 MHz
Graphics: Card: Advanced Micro Devices [AMD/ATI] Mullins [Radeon R4/R5 Graphics]
bus-ID: 00:01.0
Display Server: x11 (X.Org 1.19.6 )
drivers: ati,radeon (unloaded: modesetting,fbdev,vesa)
Resolution: 1366x768@60.00hz, 1440x900@59.90hz
OpenGL: renderer: AMD MULLINS (DRM 2.50.0 / 4.15.0-30-generic, LLVM 6.0.0)
version: 4.5 Mesa 18.0.5 Direct Render: 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] Kabini HDMI/DP Audio
driver: snd_hda_intel bus-ID: 00:01.1
Sound: Advanced Linux Sound Architecture v: k4.15.0-30-generic
Network: Card-1: Realtek RTL8101/2/6E PCIE Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 3000 bus-ID: 01:00.0
IF: enp1s0 state: down mac: <filter>
Card-2: Realtek RTL8723BE PCIe Wireless Network Adapter
driver: rtl8723be port: 2000 bus-ID: 02:00.0
IF: wlp2s0 state: down mac: <filter>
Card-3: Realtek RTL8187 Wireless Adapter
driver: rtl8187 usb-ID: 003-004
IF: wlx00c0ca46de71 state: N/A mac: N/A
Drives: HDD Total Size: 1000.2GB (1.0% used)
ID-1: /dev/sda model: TOSHIBA_MQ01ABD1 size: 1000.2GB
Partition: ID-1: / size: 99G used: 6.4G (7%) fs: ext4 dev: /dev/sda1
ID-2: /home size: 816G used: 1.2G (1%) fs: ext4 dev: /dev/sda5
ID-3: swap-1 size: 2.05GB used: 0.00GB (0%)
fs: swap dev: /dev/sda6
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 63.2C mobo: N/A gpu: 55.0
Fan Speeds (in rpm): cpu: N/A
Repos: Active apt sources in file: /etc/apt/sources.list.d/official-package-repositories.list
deb http://packages.linuxmint.com tara main upstream import backport
deb http://archive.ubuntu.com/ubuntu bionic main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ bionic partner
Info: Processes: 189 Uptime: 1:14 Memory: 2351.9/6933.7MB
Init: systemd runlevel: 5 Gcc sys: 7.3.0
Client: Shell (bash 4.4.191) inxi: 2.3.56
Saludos y muchas gracias.