FriendlyWRT - Nanopi r4s lost LAN connection

[dave]

I installed FriendlyWrt 24.10.0, r28427-6df0e3d02a on to an SD card

Initial setup was fine, and was able to connect to the internet, and devices connected through my wireless APs. Both WAN and LAN lights were working.

I then tried to enable SQM on eth1 interface, and from that point on the LAN port does not appear to be working. I have tried:

• Reflashing the same image
• flashing R4S-Series-FriendlyWrt-23.05.img.gz
• flashing alternative distro

in all cases eth1 doesn't seem to be available any longer. Lights on LAN port do not light up when cable connected. Any suggestions of things to try?

[dave]

Problem persists with downgrade to OpenWrt 23.05.5 r24106-10cc5fcd00:

Issue seems to be due to this PCIe timeout from logs:

kern.err kernel: [ 2.452262] rockchip-pcie f8000000.pcie: PCIe link training gen1 timeout!
kern.warn kernel: [ 2.452925] rockchip-pcie: probe of f8000000.pcie failed with error -110

LAN Ethernet simply not available (warm and cold reboots don't seem to affect the status either). Different power supplies used with no change in results