激活网络连接失败 - 从 Windows 重新启动时修复

Question

链接速度

您的以太网卡能够达到 1Gb 的速度，但只能以 100Mb 的速度使用。这通常表示电缆存在问题，或者某些网络设备（如以太网集线器/交换机/路由器）无法提供 1G 的速度。首先，检查您使用的是 cat 5e 还是 cat 6 以太网电缆。

sudo lshw -C network

size: 100Mbit/s
capacity: 1Gbit/s

乙太網驅動程式

r8169 驱动程序已知存在一些问题。安装此驱动程序并查看情况是否有所改善。

sudo apt update

sudo apt install dkms r8168-dkms

reboot

MSI 中断问题

一些 r816x 以太网卡无法正确处理 MSI/MSIX 中断。如果需要，我们可能需要实施补丁来解决该问题。需要时提供信息。显示：

lspci -nn | grep -i ethernet

05:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)

这是所需的补丁。说明在脚本中。请密切关注。

# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1779817

# filename: r8169_disable_msi

# Drop it in /etc/initramfs-tools/scripts/init-top and chmod a+x it. Add 'r8169_disable_msi'
# to your kernel command line (/etc/default/grub, GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
# usually.) 

# Remember to update-initramfs and update-grub as necessary.

# sudo update-initramfs -c -k $(uname -r)
# sudo update-grub
# reboot

# For the moment it disables MSI on everything with the ID 0x10ec:0x8168, as there seems to
# be no way to get the MAC version from userspace - and certainly not before the driver is
# loaded. Other PCI IDs may need adding..

PREREQ=""
prereqs()
{
    echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
    prereqs
    exit 0
    ;;
esac

disable_msi () {
    for i in /sys/bus/pci/devices/*; do 
        if [ $(cat $i/vendor) = "0x10ec" -a $(cat $i/device) = "0x8168" ]; then
            echo 0 >$i/msi_bus
        fi
    done
}

for x in $(cat /proc/cmdline); do
        case ${x} in
        r8169_disable_msi)
        disable_msi
        break
                ;;
        esac
done

Answer 1