我使用 Acer 5750G。我需要使用一种特殊的软件，该软件仅在内核 4.4 上工作，并带有网络。所以我降级了内核。启动成功，但不包括网络。我不知道该如何修复它。请帮忙。
我在 4.4 上找不到我的以太网驱动程序 tg3.ko 和无线驱动程序 ath9k.ko，但是在 4.10 上却找不到。
以下是一些信息。希望对您有帮助。来自 varunendra
4.4 的结果
########## wireless info START ##########
Report from: 23 Nov 2017 14:41 CST +0800
Booted last: 23 Nov 2017 00:00 CST +0800
Script from: 25 Mar 2017 07:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:24:03 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu (from ~/.dmrc)
##### lspci #############################
02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57785 Gigabit Ethernet PCIe [14e4:16b5] (rev 10)
Subsystem: Acer Incorporated [ALI] NetLink BCM57785 Gigabit Ethernet PCIe [1025:0504]
02:00.1 SD Host controller [0805]: Broadcom Corporation BCM57765/57785 SDXC/MMC Card Reader [14e4:16bc] (rev 10)
03:00.0 Network controller [0280]: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) [168c:002e] (rev 01)
Subsystem: Foxconn International, Inc. T77H167.00 [105b:e034]
Kernel modules: wl
##### lsusb #############################
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 045e:00cb Microsoft Corp. Basic Optical Mouse v2.0
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 058f:b002 Alcor Micro Corp. Acer Integrated Webcam
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
##### lsmod #############################
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:1804 errors:0 dropped:0 overruns:0 frame:0
TX packets:1804 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:133288 (133.2 KB) TX bytes:133288 (133.2 KB)
##### iwconfig ##########################
lo no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
##### resolv.conf #######################
##### network managers ##################
Installed:
NetworkManager
Running:
root 907 1 0 14:36 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/ISNET]] (600 root)
[connection] id=ISNET | type=wifi | permissions=user:justin:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=ISNET
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
nl80211 not found.
##### iwlist channels ###################
lo no frequency information.
##### iwlist scan #######################
lo Interface doesn't support scanning.
##### module infos ######################
##### module parameters #################
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist-bcm43.conf]
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 7.233292] systemd[1]: Started Trigger resolvconf update for networkd DNS.
[ 15.154259] wl: module license 'MIXED/Proprietary' taints kernel.
[ 15.156037] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 15.156163] wl: Unknown symbol wiphy_new_nm (err 0)
[ 15.156171] wl: Unknown symbol wiphy_register (err 0)
[ 15.156205] wl: Unknown symbol wiphy_unregister (err 0)
[ 15.156217] wl: Unknown symbol __ieee80211_get_channel (err 0)
[ 15.156233] wl: Unknown symbol ieee80211_channel_to_frequency (err 0)
[ 15.156245] wl: Unknown symbol ieee80211_frequency_to_channel (err 0)
[ 15.156251] wl: Unknown symbol wiphy_free (err 0)
########## wireless info END ############
答案1
我很好奇这个特殊的软件是什么。无论如何，发生的事情清楚地意味着您的 wifi 驱动程序是在 linux-4.4 之后的某个地方添加的。如果您真的渴望运行 4.4，您可以找到第一个带有驱动程序的内核，然后尝试使用加载驱动程序insmod。由于内核和驱动程序之间的接口变化，它可能无法按预期工作 - 这就是 linux 内核尽管已有 26 年历史但仍然很现代的原因，即因为内核经常通过核心和驱动程序进行重构。在这种情况下，您必须下载源代码，手动将驱动程序移植到 4.4，然后构建内核。
您可以使用此链接有关内核之间变化的详细列表，希望它足以找出驱动程序被添加到哪里。