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Swarnagowri Bhambore's questions

Martin Hope
Swarnagowri Bhambore
Asked: 2019-08-08 02:36:49 +0800 CST
  • 2

我最近从 LTS 18.04 升级到 ubuntu 19.04，并且无法连接到家庭 wifi。

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 19.04
Release:    19.04
Codename:   disco

我正在使用英特尔无线 7260：

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ sudo lshw -class network

[sudo] password for swarna: 
  *-network                 
       description: Ethernet interface
       product: RTL810xE PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 08
       serial: 08:9e:01:ec:56:91
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=half firmware=rtl8106e-2_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:16 ioport:3000(size=256) memory:b0504000-b0504fff memory:b0500000-b0503fff
  *-network
       description: Wireless interface
       product: Wireless 7260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 73
       serial: 0c:8b:fd:6f:5b:a8
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.0.0-21-generic firmware=17.3216344376.0 ip=192.168.225.78 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:46 memory:b0400000-b0401fff

感觉是crda的问题，由于Process '/sbin/crda' failed with exit code 255.日志中的错误，在REGDOMAIN中添加了IND：

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ cat /etc/default/crda
# Set REGDOMAIN to a ISO/IEC 3166-1 alpha2 country code so that iw(8) may set
# the initial regulatory domain setting for IEEE 802.11 devices which operate
# on this system.
#
# Governments assert the right to regulate usage of radio spectrum within
# their respective territories so make sure you select a ISO/IEC 3166-1 alpha2
# country code suitable for your location or you may infringe on local
# legislature. See `/usr/share/zoneinfo/zone.tab' for a table of timezone
# descriptions containing ISO/IEC 3166-1 alpha2 country codes.

REGDOMAIN=IND

并重新启动系统。但还是得到了：

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ crda
COUNTRY environment variable not set.

此外，我将 setregdomain 更改为也将 IND 设置为 REGDOMAIN

swarna@swarna-Lenovo-Ideapad-Flex-15:/lib/crda$ cat setregdomain
#!/bin/sh

set -e

REGDOMAIN=IND
CRDA_CONF=/etc/default/crda

[ -r "$CRDA_CONF" ] && . "$CRDA_CONF"
[ -z "$REGDOMAIN" ] && exit 0

exec /sbin/iw reg set "$REGDOMAIN"

并重新启动。

还是一样 -

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ crda
COUNTRY environment variable not set.

我也尝试了以下方法（在浏览了互联网上提供的各种建议之后），但没有任何效果：

sudo service network-manager restart; reboot
sudo modprobe iwlwifi 11n_disable=1; reboot
sudo rmmod iwlmvm iwlwifi; reboot

我能够连接到其他 wi-fi，完全没有任何变化。我的系统有双启动，并且 Windows 与我的家庭 wifi 连接良好。

另外，我不确定 crda 问题是否只是一个红鲱鱼，还有其他需要解决的问题。

在此之后我无法继续。有人可以建议我可能做错了什么并帮助我解决问题吗？请让我知道是否需要附加任何其他信息。

发布答案，这里是日志：

输出_IN

我已REGDOMAIN=IN按照建议修改 /etc/default/crda 以保持：

swarna@swarna-Lenovo-Ideapad-Flex-15:/var/log$ cat /etc/default/crda
# Set REGDOMAIN to a ISO/IEC 3166-1 alpha2 country code so that iw(8) may set
# the initial regulatory domain setting for IEEE 802.11 devices which operate
# on this system.
#
# Governments assert the right to regulate usage of radio spectrum within
# their respective territories so make sure you select a ISO/IEC 3166-1 alpha2
# country code suitable for your location or you may infringe on local
# legislature. See `/usr/share/zoneinfo/zone.tab' for a table of timezone
# descriptions containing ISO/IEC 3166-1 alpha2 country codes.

REGDOMAIN=IN

我还从 /lib/crda/setregdomain 中删除了我的更改：

#!/bin/sh

set -e

REGDOMAIN=
CRDA_CONF=/etc/default/crda

[ -r "$CRDA_CONF" ] && . "$CRDA_CONF"
[ -z "$REGDOMAIN" ] && exit 0

exec /sbin/iw reg set "$REGDOMAIN"

现在我明白了

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ iw reg get
global
country IN: DFS-UNSET
    (2402 - 2482 @ 40), (N/A, 20), (N/A)
    (5150 - 5350 @ 160), (N/A, 23), (N/A)
    (5725 - 5875 @ 80), (N/A, 23), (N/A)

但：

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ crda
COUNTRY environment variable not set.

我也尝试连接到另一个wifi，在这种情况下我没有看到crda错误，并且连接成功。

swarna@swarna-Lenovo-Ideapad-Flex-15:~$ nmcli device wifi list
IN-USE  SSID                 MODE   CHAN  RATE        SIGNAL  BARS  SECURITY  
*       Lakme                Infra  1     270 Mbit/s  87      ▂▄▆█  WPA1 WPA2 
        JioFi4_0413B0        Infra  6     65 Mbit/s   52      ▂▄__  WPA2      
        IvanDominic          Infra  3     135 Mbit/s  19      ▂___  WPA1 WPA2 
        Abhi2316@kbroadband  Infra  1     270 Mbit/s  9       ▂___  WPA2
networking lenovo network-manager ideapad 19.04