Hi I'm experiencing some weird WiFi problems since the arrival of Kernels 5.x. Currently I run 5.3.0-2-amd64 and MT7612 MediaTek Inc. 802.11ac WLAN USB3 dongle. I suffer frequent disconects, and everytime this happens, I see this in the system log:
wpa_supplicant[651]: wlx00e0bb330276: CTRL-EVENT-STARTED-CHANNEL-SWITCH freq=5540 ht_enabled=1 ch_offset=1 ch_width=80 MHz cf1=5530 cf2=0 wpa_supplicant[651]: wlx00e0bb330276: CTRL-EVENT-CHANNEL-SWITCH freq=5540 ht_enabled=1 ch_offset=1 ch_width=80 MHz cf1=5530 cf2=0 wlx00e0bb330276: AP a0:64:8f:dc:b1:81 tries to chanswitch to same channel, ignore wlx00e0bb330276: AP VHT information is invalid, disable VHT wlx00e0bb330276: AP a0:64:8f:dc:b1:81 changed bandwidth, new config is 5540 MHz, width 2 (5550/0 MHz) wlx00e0bb330276: AP a0:64:8f:dc:b1:81 changed bandwidth in a way we can't support - disconnect wlx00e0bb330276: failed to follow AP a0:64:8f:dc:b1:81 bandwidth change, disconnect wlx00e0bb330276: CTRL-EVENT-DISCONNECTED bssid=a0:64:8f:dc:b1:81 reason=3 locally_generated=1 NetworkManager[642]: <warn> [1574118371.9594] sup-iface[0x560817a7a130,wlx00e0bb330276]: connection disconnected (reason -3) Different 5 GHz channels but always the same sequence. After disconnection Network Manager keep asking for the WiFi password (Network Manager already knows this password) but this is a different problem... Other devices connected to the same WiFi router using 802.11ac mode does not have this problem, only my Debian Sid box. Any idea on how to solve / fix / track down this problem? Unfortunately I can't use a wired connection. Thanks in advance. Migue A. Vallejo
