Problems with Gigabit Ethernet on Vero 4K +

can you confirm the output of uname -a, please?

then

sudo apt-get install --reinstall vero364-image-3.14.29-120-osmc

to undo just these ethernet changes.

Was that addressed to me? If so, I already said:

Linux Vero4K 3.14.29-121-osmc #1 SMP Sat Sep 29 05:20:26 UTC 2018 aarch64 GNU/Linux

no @brifletch

I have it in both directions. Did install a file Sam send me, which made things much worse, can’t use ethernet at all anymore, only wifi. On wifi no speed problems by the way. Waiting for an update from Sam for what to do with my unit. I’m sure this ‘snag’ will be dealt with.

One thing which concerns me about this issue is that the iperf3 numbers I’m getting are so variable. Without making any change to the software at all, today I’ve had one batch of numbers where I was getting speeds of 400-600Mb/s and another batch where I was getting 60-90Mb/s. This makes it very hard to tell whether a software patch is actually making things better or worse, because the results aren’t reproducible.

It’s also worrying, in that a device which appears to be working correctly when tested once or twice might perhaps not work correctly on another occasion - so I’m not sure how anyone can even be sure that they don’t have a problem.

If you’re able to burst above 200Mbps TX, it’s unlikely to be a hardware problem.
That might be a software issue and should be investigated separately. For example, it looks like @DarkCinema may have a network issue in general rather than a hardware problem.

It’s also worth keeping in mind that 900Mbps is a maximum speed; when my network is congested I can see much lower.

I don’t agree with this one. Fortunately the hardware issues are now pretty evident in the form of symptoms. They don’t occur later; so it’s easy to identify affected units now and stop them from shipping.

Many users have received their device, plugged it in and experienced no issues. It’s safe to say they don’t have a problem.

I’ve received back three units now; and all three failed our tests consistently.

Cheers

Sam

New orders are tested with extra checks before dispatch.
You won’t receive a device with this issue.

Cheers

Sam

1 Like

Thanks @grahamh Output: Linux Vero4K 3.14.29-121-osmc #1 SMP Sat Sep 29 05:20:26 UTC 2018 aarch64 GNU/Linux

I can send you a test build if you’re willing to try it.

Sam

Good, thanks. It was a silly mistake here that was preventing me getting kernel 121.

1 Like

Sure, @sam_nazarko, happy to give it a try. Assuming I’d still be able to rollback using the command that @grahamh shared, above?

Sorry … I don’t think you were talking to me, were you?

Perfect, thanks @sam_nazarko - ordered and i’m very excited :slight_smile:

I will send you a ping shortly.
But I don’t think you have a hardware problem based on your symptoms

Sam

Did not help at all:

root@osmckino:~# iperf3 -c whs.box
Connecting to host whs.box, port 5201
[  4] local 10.1.0.41 port 46015 connected to 10.1.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  6.60 MBytes  55.4 Mbits/sec  108   4.24 KBytes
[  4]   1.00-2.00   sec  6.06 MBytes  50.8 Mbits/sec  132   4.24 KBytes
[  4]   2.00-3.00   sec  3.67 MBytes  30.8 Mbits/sec   70   4.24 KBytes
[  4]   3.00-4.00   sec  6.59 MBytes  55.3 Mbits/sec  101   5.66 KBytes
[  4]   4.00-5.00   sec  4.37 MBytes  36.6 Mbits/sec   81   2.83 KBytes
[  4]   5.00-6.00   sec  6.58 MBytes  55.2 Mbits/sec   91   4.24 KBytes
[  4]   6.00-7.00   sec  5.16 MBytes  43.3 Mbits/sec   84   4.24 KBytes
[  4]   7.00-8.00   sec  4.58 MBytes  38.4 Mbits/sec   77   2.83 KBytes
[  4]   8.00-9.00   sec  2.77 MBytes  23.3 Mbits/sec   54   4.24 KBytes
[  4]   9.00-10.00  sec  5.07 MBytes  42.5 Mbits/sec   90   2.83 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  51.5 MBytes  43.2 Mbits/sec  888             sender
[  4]   0.00-10.00  sec  51.4 MBytes  43.1 Mbits/sec                  receiver

iperf Done.

I would agree with that, @sam_nazarko. Will reply to your message now.

Hi @grahamh Sorry to be a pain. I’m getting the following error when trying to reinstall the previous version:

E: Unable to locate package vero364-image-3.14.29-120-osmc
E: Couldn’t find any package by glob ‘vero364-image-3.14.29-120-osmc’
E: Couldn’t find any package by regex ‘vero364-image-3.14.29-120-osmc’

The quality of your networking equipment matters also. As Sam mentioned, 900+Mbps is the maximum speed possible without any other network traffic. Cheap unmanaged switches and even some more expensive branded routers with switches inside aren’t always the fastest or best quality.

There was a user earlier stating they used their Asus router with Merlin FW. I use the same, but I have a dedicated managed switch. If your router is running a VPN, your speed will be lower. I’ve had some unmanaged Netgear switches reboot spontaneously before. It was always a bad power supply to the switch. If you’re getting inconsistent throughput, sometimes faster, sometimes slower, it’s likely your switch that is the problem. Run an iperf3 test on a PC to your NAS or to another PC. Don’t daisy-chain your switches. Plug each device directly into one switch. If you don’t have enough ports, buy a bigger switch, preferably one that is managed (configurable).

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And if the 4K+ gives wildly varying iperf3 numbers, while four other devices connected to the same switch give perfectly consistent numbers at all times, I’m still supposed to blame the switch?

I’m trying to point out a few things that might help some people. Maybe it doesn’t apply to you. Perhaps your unit is bad and you should contact Sam for a replacement. Does your name imply something about your personality?