我的新 ubuntu 22.04 LTS 有 wifi 问题。我的 wifi 经常断开连接。我发现了一些建议将内核从 5.15 升级到 5.17。然后我使用此命令升级到 5.17 内核
sudo apt-get update
sudo apt-get upgrade
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.17.5/amd64/linux-headers-5.17.5-051705_5.17.5-051705.202204271406_all.deb
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.17.5/amd64/linux-headers-5.17.5-051705-generic_5.17.5-051705.202204271406_amd64.deb
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.17.5/amd64/linux-image-unsigned-5.17.5-051705-generic_5.17.5-051705.202204271406_amd64.deb
wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.17.5/amd64/linux-modules-5.17.5-051705-generic_5.17.5-051705.202204271406_amd64.deb
sudo dpkg -i linux*.deb
现在顶部栏和设置上看不到 wifi。我使用 HP 1000。
网络硬件信息
~$ lspci -knn | grep Net -A7
07:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
DeviceName: Marilyn HB125 1x1 802.11bgn
Subsystem: Hewlett-Packard Company AR9485/HB125 802.11bgn 1×1 Wi-Fi Adapter [103c:1838]
Kernel modules: ath9k
08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader [10ec:5229] (rev 01)
Subsystem: Hewlett-Packard Company RTS5229 PCI Express Card Reader [103c:21e9]
Kernel driver in use: rtsx_pci
Kernel modules: rtsx_pci
~$ sudo lshw -C network
*-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: 05
serial: 8c:dc:d4:d6:42:c9
size: 100Mbit/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 driverversion=5.17.8-051708-generic duplex=full firmware=rtl_nic/rtl8105e-1.fw ip=192.168.1.4 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:16 ioport:4000(size=256) memory:f1104000-f1104fff memory:f1100000-f1103fff
*-network UNCLAIMED
description: Network controller
product: AR9485 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:07:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:f1200000-f127ffff memory:f1280000-f128ffff
~$ sudo dmesg | grep ath
[ 0.000000] Linux version 5.17.8-051708-generic (kernel@kathleen) (gcc (Ubuntu 11.3.0-1ubuntu1) 11.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #202205151940 SMP PREEMPT Sun May 15 20:04:23 UTC 2022
[ 5.350372] ath: disagrees about version of symbol ieee80211_get_channel_khz
[ 5.350380] ath: Unknown symbol ieee80211_get_channel_khz (err -22)
[ 5.350394] ath: disagrees about version of symbol wiphy_apply_custom_regulatory
[ 5.350396] ath: Unknown symbol wiphy_apply_custom_regulatory (err -22)
[ 5.350407] ath: disagrees about version of symbol freq_reg_info
[ 5.350408] ath: Unknown symbol freq_reg_info (err -22)
我的临时解决方案
现在，我已将 ubuntu 内核降级为 以5.13.19-051319-generic解决我的 wifi 问题。这不是最好的解决方案，但我可以不间断地工作一段时间，直到内核的新更新修复了我的 wifi 问题。