updated last night, wireless card stopped working
rolling back to 20210626 did NOT fix the problem by itself
rebooting and rolling back the kernel DID make the card functional again
matt@ichliebesusanne:~> lsusb
Bus 002 Device 002: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 13d3:5a11 IMC Networks USB2.0 VGA UVC WebCam
Bus 001 Device 004: ID 13d3:3529 IMC Networks Bluetooth Radio
Bus 001 Device 007: ID 0bda:c811 Realtek Semiconductor Corp. 802.11ac NIC
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
matt@ichliebesusanne:~> tumbleweed status
latest : 20210628
target : 20210626
installed: 20210626
ichliebesusanne:~ # iwconfig
lo no wireless extensions.
wlp0s21f0u1 IEEE 802.11AC ESSID:"FBGM" Nickname:"WIFI@RTL8821CU"
Mode:Managed Frequency:5.18 GHz Access Point: 08:9B:B9:CC:57:5F
Bit Rate:434 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:****-****-****-****-****-****-****-**** Security mode:open
Power Management:off
Link Quality=79/100 Signal level=61/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
tun0 no wireless extensions.
ichliebesusanne:~ # inxi
CPU: Dual Core Intel Celeron N4020 (-MCP-) speed/min/max: 1417/800/2800 MHz
Kernel: 5.12.12-1-default x86_64 Up: 13h 39m Mem: 2603.8/3742.1 MiB (69.6%)
Storage: 177.75 GiB (10.8% used) Procs: 214 Shell: Bash inxi: 3.3.03