RealTek R8168 of Dell 3847 randomly not working?

Phone Guy

New Member
May 21, 2022
17
2
1
I am trying to use a Dell 3847 with proxmox. This motherboard has a 1gb onboard nic Realtek R8168 (02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c))

This board gave me no troubles with windows installed before, so I doubt its a hardware issue, but the machine was stored away for a while unused before trying to be repurposed into a proxmox box.

This what I get from lspci
Code:
lspci -nnk | grep -i net -A4
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
        Subsystem: Dell RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1028:0622]
        Kernel driver in use: r8169
        Kernel modules: r8169
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
        Subsystem: Dell QCA9565 / AR9565 Wireless Network Adapter [1028:020c]
        Kernel driver in use: ath9k
        Kernel modules: ath9k

I have tried with the wireless card and without the wireless card and the wired nic will randomly not work... no lights or anything. After googling it seems people do have issues with this nic in proxmox, but the posts are not recent so I am unsure if the issued were resolved?

How can I establish if its a hardware issue or a driver issue? The wired nic either works on a reboot or doesnt. If it works, it seems to stay working until a reboot where its a 50/50 gamble it will work again. when it doesnt work, there are no activity lights on the nic port after proxmox loads... when that happens I have to restart the pc until the lights are active after proxmox loads.

I would also like to get the wireless card working, but 1 step at a time.
I currently have Proxmox PVE 7.2-4 installed
 
Last edited:
I have tested this pc with a windows 10 install and I can not replicate the lan issue. So it is absolutely something to do with proxmox and/or the 8169 driver not being 100% compatible with the built in 8168 hardware. As I new to proxmox and have no linux experience can anyone help me troubleshoot this intermittent lan problem?
 

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