On Tue, 2020-02-04 at 11:19 +0000, Patrick O'Callaghan wrote:
However my problem is the high error rate, which in practice slows down Internet connections dramatically. My ISP connection is rated at 80Mbps/20Mpbs and usually gets to within 90% of that, but a speed test directly to the ISP is only getting around 3Mbps/2Mbps with this kernel, while with 5.4.13 it runs as expected.
Well, wouldn't you know it. I rebooted both 5.4.13 (which worked before) and now it also failed.
After swapping out the Ethernet cable I rebooted 5.4.13 and it's now working. I then rebooted with 5.4.15 and it too is currently working.
So it may be something as trivial as a bad cable, though I had tried different ones before now and it didn't seem to make a difference. If that's the case I apologise for the noise(!).
The interface is still only working at 100M rather than 1000M but I can live with that for now. It's possible that the NIC itself is flaky but I don't have another one to test.
I'll report back if anything else comes to light.
poc