Armbian: Ethernet port goes down shortly after successful configuration.

[Kawayuppie]

Hi,

I am having trouble with Ethernet port on Pine H64 B. When I connect it to a GigE port on a switch, it goes get configured correctly, speed and and address, but quit quickly link goes down and there is no way to resurrect. Vert frustrating. I have yet to try a new kernel, but I am using latest GA of Armbian.

Linux pineh64 5.10.21-sunxi64 #21.02.3 SMP Mon Mar 8 00:45:13 UTC 2021 aarch64 GNU/Linux

These are the errors I see in the dmesg log (journalctl -k).

Feb 14 10:12:09 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: PHY [stmmac-0:01] driver [RTL8211E Gigabit Ethernet] (irq=POLL)

Feb 14 10:12:09 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: No Safety Features support found
Feb 14 10:12:09 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: No MAC Management Counters available
Feb 14 10:12:09 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: PTP not supported by HW
Feb 14 10:12:09 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: configuring for phy/rgmii-id link mode
Feb 14 10:12:09 pineh64 kernel: rtl8723bs: acquire FW from file:rtlwifi/rtl8723bs_nic.bin
Feb 14 10:12:13 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Feb 14 10:12:13 pineh64 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Feb 14 10:12:15 pineh64 kernel: broken atomic modeset userspace detected, disabling atomic
Feb 14 10:12:18 pineh64 kernel: fuse: init (API version 7.32)
Feb 14 10:12:27 pineh64 kernel: vcc3v3: disabling
Feb 14 10:12:27 pineh64 kernel: vcc1v8: disabling
Feb 14 10:12:27 pineh64 kernel: vcc-ac200: disabling
Feb 14 10:12:28 pineh64 kernel: dwmac-sun8i 5020000.ethernet eth0: Link is Down

I will see if I can get a later kernel and try that but, however, in the meantime if someone who knows how to fix this, please let  me know.

[evilbunny]

Have you tried disabling hardware rx/tx offloading?