Problem, reported as 'interference'

[jandacooper]

Hi all. Over the last two weeks or so, my connection speed via wifi seems to have slowed, tested this am at 26 up, 10 down. I'm on M250. The hub test and reset process, done several times tells me that all of my devices have connection problems and interference. I have not changed anything about the hub, or added any other kit/device that would interfere. When I retest the hub via here, the problem persists, then I'm asked to login via myvirginmedia, which in turn reports "sorry, we are unable to test your equipment right now" or something very similar.

Any suggestions?

Thanks

[jandacooper]

https://www.thinkbroadband.com/broadband/monitoring/quality/share/a58e21d1570bb4f77893b6203e8616c5e561cb0e

This has been running for several minutes, so I expected to see some data.. 

[lotharmat]

I can see data - and it looks horrendous!

[jandacooper]

• s
• Downstream
• Upstream
• Configuration
• Networklog

Refresh data

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status	Online	DOCSIS 3.1
Primary downstream channel	Locked	SC-QAM
DOCSIS 3.0 channels	31	5
DOCSIS 3.1 channels	1	1

[jandacooper]

Router status

• Status
• Downstream
• Upstream
• Configuration
• Networklog

Refresh data

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	30100000	44.020599	5120 KSym/sec	16QAM	4
2	43100000	44.270599	5120 KSym/sec	64QAM	2
3	49600000	44.020599	5120 KSym/sec	16QAM	1
4	36600000	44.520599	5120 KSym/sec	16QAM	3
5	23600000	43.270599	5120 KSym/sec	32QAM	9

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_ATDMA	0	0	0	0
2	US_TYPE_ATDMA	0	0	0	0
3	US_TYPE_ATDMA	0	0	0	0
4	US_TYPE_ATDMA	0	0	0	0
5	US_TYPE_ATDMA	0	0	0	0

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation

10

10.8

37.2

2K

QAM128

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts

10

OFDMA

220

53.4

1

0

[jandacooper]

https://www.thinkbroadband.com/broadband/monitoring/quality/share/a58e21d1570bb4f77893b6203e8616c5e561cb0e

Some data on here now, My HUB4 keeps resetting, it is proving hard to post anything at the moment. 

[lotharmat]

Upstream QAM is all over the place! - I think that's your problem!

[jandacooper]

...well, thank you for that (!) What is to be done to rectify this? Do I need an engineer visit, a new hub, or is it part of the current National VM issues?

My HUB4 keeps resetting itself, I have unplugged it and will restart it now. Currently posting via mobile.

[jandacooper]

HUB4 reset, speeds now

DOWNLOAD Mbps

70.97

UPLOAD Mbps

26.07

[lotharmat]

I'd wait for VM forum staff to pick this up - they will be better placed to advise.

Personally, unless you are subject to a wider outage / fault, I think a tech visit is warranted.

[jandacooper]

Thank you very much for your time on this. I'll cross my fingers that they will pick it up soon. Cheers.