Usb devices not working

I have manjaro xfce version, new installation. everything updated.

The problem is when i insert a usb device it’s not working, not showing anywhere including “lsusb”. But when i restart my PC; everything is working. I need to restart the PC everytime i plug a usb device.

Any suggestion?

please may you post the output of ‘inxi -Fxz’ to get a better overview.

here “inxi -Fxz” results:

  Kernel: 5.9.16-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.1 
  Desktop: Xfce 4.16.0 Distro: Manjaro Linux 
  Type: Desktop Mobo: ASUSTeK model: M3A v: Rev 1.xx serial: <filter> 
  BIOS: American Megatrends v: 1206 date: 06/11/2010 
  Info: Quad Core model: AMD Phenom 9500 bits: 64 type: MCP arch: K10 rev: 2 
  L2 cache: 2 MiB 
  flags: lm nx pae sse sse2 sse3 sse4a svm bogomips: 17611 
  Speed: 1100 MHz min/max: 1100/2200 MHz Core speeds (MHz): 1: 2200 2: 1100 
  3: 1100 4: 1100 
  Device-1: AMD RV630 PRO [Radeon HD 2600 PRO] vendor: PC Partner Limited 
  driver: radeon v: kernel bus ID: 01:00.0 
  Display: x11 server: X.Org 1.20.10 driver: loaded: ati,radeon 
  unloaded: modesetting resolution: 1024x768~60Hz 
  OpenGL: renderer: AMD RV630 (DRM 2.50.0 / 5.9.16-1-MANJARO LLVM 11.1.0) 
  v: 3.3 Mesa 20.3.4 direct render: Yes 
  Device-1: AMD SBx00 Azalia vendor: ASUSTeK driver: snd_hda_intel v: kernel 
  bus ID: 00:14.2 
  Device-2: AMD RV630 HDMI Audio [Radeon HD 2600 PRO/XT / HD 3610] 
  vendor: PC Partner Limited driver: snd_hda_intel v: kernel bus ID: 01:00.1 
  Sound Server: ALSA v: k5.9.16-1-MANJARO 
  Device-1: Qualcomm Atheros Attansic L1 Gigabit Ethernet 
  vendor: ASUSTeK P5B-MX/WiFi-AP P5KPL-VM driver: atl1 v: kernel port: e000 
  bus ID: 02:00.0 
  IF: enp2s0 state: down mac: <filter> 
  Device-2: Realtek RTL8192CU 802.11n WLAN Adapter type: USB 
  driver: rtl8192cu bus ID: 1-4:4 
  IF: wlp0s19f5u4 state: up mac: <filter> 
  Local Storage: total: 298.09 GiB used: 18.37 GiB (6.2%) 
  ID-1: /dev/sda vendor: Samsung model: HD321KJ size: 298.09 GiB 
  ID-1: / size: 277.61 GiB used: 18.37 GiB (6.6%) fs: ext4 dev: /dev/sda1 
  ID-1: swap-1 type: partition size: 15.04 GiB used: 0 KiB (0.0%) 
  dev: /dev/sda2 
  System Temperatures: cpu: 56.0 C mobo: 32.0 C gpu: radeon temp: 69.0 C 
  Fan Speeds (RPM): cpu: 2689 psu: 0 case-1: 0 
  Power: 12v: 11.71 5v: N/A 3.3v: 3.28 vbat: N/A 
  Processes: 183 Uptime: 32m Memory: 2.92 GiB used: 1.36 GiB (46.7%) 
  Init: systemd Compilers: gcc: 10.2.0 Packages: 1189 Shell: Bash v: 5.1.0 
  inxi: 3.3.01

I have the same problem running KDE Plasma on a Lenovo ThinkPad T495, so it could be related to the hardware not the desktop. Any similarities?

If it works after a reboot, maybe you did a system update before? If the kernel is updated, you have to reboot.