wifi断开连接后有时候无法自动恢复

[berkaroad]

笔记本放家里，开了内网穿透。家里网络wifi路由器白天会重新一次。今天在公司远程，之后永久断开未能恢复。到家后，ubuntu系统显示wifi图标带一个问号。

停用wifi再重新启用，网络恢复。

> dmesg
[112854.932755] [WARNING][BB] H2C cmd error!!
[112854.932770] [WARNING][BB]Error H2C CLASS=1, ID=0, Rt_v = 1
[112856.944567] [WARNING][BB]Error H2C CLASS=1, ID=1, Rt_v = 1
[112856.944573] [WARNING][BB] H2C cmd error!!
[112856.944582] [WARNING][BB]Error H2C CLASS=1, ID=0, Rt_v = 1
[112858.964538] [WARNING][BB]Error H2C CLASS=1, ID=1, Rt_v = 1
[112858.964544] [WARNING][BB] H2C cmd error!!
[112858.964553] [WARNING][BB]Error H2C CLASS=1, ID=0, Rt_v = 1
[112860.980605] [WARNING][BB]Error H2C CLASS=1, ID=1, Rt_v = 1
[112860.980620] [WARNING][BB] H2C cmd error!!
[112860.980636] [WARNING][BB]Error H2C CLASS=1, ID=0, Rt_v = 1
[112871.056721] [WARNING][BB]Error H2C CLASS=1, ID=1, Rt_v = 1
[112871.056735] [WARNING][BB] H2C cmd error!!
[112871.056752] [WARNING][BB]Error H2C CLASS=1, ID=0, Rt_v = 1
[112871.976395] rtw8852be: Connection disconnected for reason 0
[112872.675141] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[112892.583775] rtw8852be: Connection disconnected for reason 0
[112903.466798] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

[berkaroad]

不是每次都这样，目前发现了第二次，第一次是在家里，这次远程时，导致一个白天不能连上。

[george]

@berkaroad
可以尝试禁止IPV6,默认使用IPV4.
具体方法在cmdline增加“ipv6.disable=1”：

sudo vim /boot/firmware/extlinux/extlinux.conf

default Linux coolpi

label Linux coolpi
        kernel /Image
        initrd /initrd.img
        fdt    /rk3588-cpcm5-notebook-v20.dtb
        append root=LABEL=writable rw rootfstype=ext4 console=ttyS0,115200n81 quiet splash plymouth.ignore-serial-consoles vt.global_cursor_default=1 irqchip.gicv3_pseudo_nmi=0 net.ifnames=0 ipv6.disable=1

[berkaroad]

@george 好的

[berkaroad]

@george 内核启动设置了ipv6.disable=1，今天发现wifi突然断开后无法重连，禁用wifi后再启用也无法恢复，重启电脑后正常。（新问题）

查看日志如下： journalctl -xeu wpa_supplicant