从 19.04 升级到 19.10 后，我之前使用的一些 wifi 网络没有问题，但现在却一直要求输入密码，即使输入了正确的密码也无法连接。
更新：
- 该问题在 20.04 中仍然存在。
- 使用 18.04 Live USB 启动仍然可以很好地连接。
- 它设法使用 19.10 和 20.04 上的这台机器连接到家中或咖啡店的其他受保护网络。
- 它设法将同一路由器连接到不受保护的 WiFi 网络。
- 20.04 Live 使用其他机器成功连接到同一个受保护的 wifi。
有趣的是，其他一些 wifi 网络像以前一样运行良好。有什么想法吗？
卡信息
*-network
description: Wireless interface
product: BCM4350 802.11ac Wireless Network Adapter
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:3a:00.0
logical name: wlp58s0
version: 08
serial: 30:52:cb:80:4a:37
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=brcmfmac driverversion=7.35.180.119 firmware=01-e791c176 ip=10.3.0.19 latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:136 memory:dc400000-dc407fff memory:dc000000-dc3fffff
lspci -knn | grep Net -A3 （输出）
3a:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4350 802.11ac Wireless Network Adapter [14e4:43a3] (rev 08)
Subsystem: Dell BCM4350 802.11ac Wireless Network Adapter [1028:0023]
Kernel driver in use: brcmfmac
Kernel modules: brcmfmac
3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525APCI Express Card Reader [10ec:525a] (rev 01)
网络管理员日志
spal. 28 15:52:28 : <info> [1572270748.9800] device (wlp58s0): Activation: starting connection 'ROCKITmembers(2G)' (0caaa7d0-e2b2-47be-9442-bef0dd5303fd)
spal. 28 15:52:28 : <info> [1572270748.9819] device (wlp58s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:28 : <info> [1572270748.9824] manager: NetworkManager state is now CONNECTING
spal. 28 15:52:28 : <info> [1572270748.9845] device (wlp58s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:28 : <info> [1572270748.9857] device (wlp58s0): Activation: (wifi) access point 'ROCKITmembers(2G)' has security, but secrets are required.
spal. 28 15:52:28 : <info> [1572270748.9859] device (wlp58s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:32 : <info> [1572270752.0135] device (wlp58s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:32 : <info> [1572270752.0162] device (wlp58s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:32 : <info> [1572270752.0189] device (wlp58s0): Activation: (wifi) connection 'ROCKITmembers(2G)' has security, and secrets exist. No new secrets needed.
spal. 28 15:52:32 : <info> [1572270752.0191] Config: added 'ssid' value 'ROCKITmembers(2G)'
spal. 28 15:52:32 : <info> [1572270752.0192] Config: added 'scan_ssid' value '1'
spal. 28 15:52:32 : <info> [1572270752.0193] Config: added 'bgscan' value 'simple:30:-80:86400'
spal. 28 15:52:32 : <info> [1572270752.0194] Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256 FT-PSK'
spal. 28 15:52:32 : <info> [1572270752.0194] Config: added 'auth_alg' value 'OPEN'
spal. 28 15:52:32 : <info> [1572270752.0195] Config: added 'psk' value '<hidden>'
spal. 28 15:52:32 : <info> [1572270752.1078] device (wlp58s0): supplicant interface state: disconnected -> associating
spal. 28 15:52:32 : <info> [1572270752.1078] device (p2p-dev-wlp58s0): supplicant management interface state: disconnected -> associating
spal. 28 15:52:34 : <info> [1572270754.9259] device (wlp58s0): supplicant interface state: associating -> 4-way handshake
spal. 28 15:52:34 : <info> [1572270754.9260] device (p2p-dev-wlp58s0): supplicant management interface state: associating -> 4-way handshake
spal. 28 15:52:44 : <warn> [1572270764.9015] sup-iface[0x558274d6c920,wlp58s0]: connection disconnected (reason -2)
spal. 28 15:52:44 : <info> [1572270764.9049] device (wlp58s0): supplicant interface state: 4-way handshake -> disconnected
spal. 28 15:52:44 : <info> [1572270764.9093] device (wlp58s0): Activation: (wifi) disconnected during association, asking for new key
spal. 28 15:52:44 : <info> [1572270764.9095] device (wlp58s0): state change: config -> need-auth (reason 'supplicant-disconnect', sys-iface-state: 'managed')
spal. 28 15:52:44 : <info> [1572270764.9107] device (p2p-dev-wlp58s0): supplicant management interface state: 4-way handshake -> disconnected
spal. 28 15:52:47 : <info> [1572270767.7116] device (wlp58s0): supplicant interface state: disconnected -> inactive
spal. 28 15:52:47 : <info> [1572270767.7118] device (p2p-dev-wlp58s0): supplicant management interface state: disconnected -> inactive
spal. 28 15:52:49 : <info> [1572270769.1482] device (wlp58s0): supplicant interface state: inactive -> scanning
spal. 28 15:52:49 : <info> [1572270769.1483] device (p2p-dev-wlp58s0): supplicant management interface state: inactive -> scanning
spal. 28 15:52:49 : <info> [1572270769.3299] device (wlp58s0): supplicant interface state: scanning -> inactive
spal. 28 15:52:49 : <info> [1572270769.3299] device (p2p-dev-wlp58s0): supplicant management interface state: scanning -> inactive
spal. 28 15:52:50 : <info> [1572270770.9128] device (wlp58s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:50 : <info> [1572270770.9141] device (wlp58s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
spal. 28 15:52:50 : <info> [1572270770.9150] device (wlp58s0): Activation: (wifi) connection 'ROCKITmembers(2G)' has security, and secrets exist. No new secrets needed.
spal. 28 15:52:50 : <info> [1572270770.9151] Config: added 'ssid' value 'ROCKITmembers(2G)'
spal. 28 15:52:50 : <info> [1572270770.9151] Config: added 'scan_ssid' value '1'
spal. 28 15:52:50 : <info> [1572270770.9152] Config: added 'bgscan' value 'simple:30:-80:86400'
spal. 28 15:52:50 : <info> [1572270770.9152] Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256 FT-PSK'
spal. 28 15:52:50 : <info> [1572270770.9152] Config: added 'auth_alg' value 'OPEN'
spal. 28 15:52:50 : <info> [1572270770.9152] Config: added 'psk' value '<hidden>'
spal. 28 15:52:50 : <info> [1572270770.9857] device (wlp58s0): supplicant interface state: inactive -> associating
spal. 28 15:52:50 : <info> [1572270770.9858] device (p2p-dev-wlp58s0): supplicant management interface state: inactive -> associating
spal. 28 15:52:53 : <info> [1572270773.0501] device (wlp58s0): disconnecting for new activation request.
spal. 28 15:52:53 : <info> [1572270773.0503] device (wlp58s0): state change: config -> deactivating (reason 'new-activation', sys-iface-state: 'managed')
spal. 28 15:52:53 : <info> [1572270773.0521] manager: NetworkManager state is now DISCONNECTING