Connectivity issues

[smelni]

I recently upgraded from 200 MBs to 1 GBs service.  To handle that speed I had to upgrade my modem so I purchased the ARRIS Group, Inc. SBG8300 which was recommended on the Xfinity site.  The service is now very unstable.  Sometimes good, sometimes not.  And the strange thing is that after I restart the modem it shows up on the xfinity page and Im able to connect and restart it for a bit of time.  But after a few hours the xfinity page says "We're having trouble finding a signal" so I cant remote restart it.  

I have been on with customer service (via chat) several times and they say they are refreshing the signal but it doesnt seem to be resolving.

Anyone else see this - any ideas?

[smelni]

I checked and it seems all my signal levels are good but I do see the following in my modem logs - does it mean something?

Unerrored CodewordsCorrectable CodewordsUncorrectable Codewords

1830094	559030611	1830094	1830094	1830094	1830094	1830094	1830094	1830094	1830093	1830094	1830093	1830094	1830094	1830093	1830094	1830094	1830093	1830094	1830094	1830093	1830094	1830094	1830093	1830094	1830094	1830094	1830094	1830094	1830094	1830093	1830094
0	3735936685	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
0	3735936685	0	0	0

[CCAndrew]

You should post all your stats together upstream, downstream etc . What you think is good May not be

[smelni]

Downstream

IndexLock StatusFrequency (Hz)SNR (dB)Power Level (dBmV)Modulation

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
525000000	453000000	459000000	465000000	471000000	477000000	483000000	489000000	495000000	501000000	507000000	513000000	519000000	531000000	537000000	543000000	549000000	555000000	561000000	567000000	573000000	579000000	585000000	591000000	597000000	603000000	609000000	615000000	621000000	627000000	633000000
40.366287	40.946209	40.946209	40.946209	40.946209	40.366287	40.946209	40.946209	40.946209	40.366287	40.366287	40.946209	40.946209	40.946209	40.366287	40.946209	40.366287	40.946209	40.946209	40.946209	40.946209	40.366287	40.366287	40.366287	40.366287	40.366287	40.366287	40.366287	40.946209	40.366287	40.366287
7.400002	7.599998	7.400002	7.300003	7.300003	7.800003	7.599998	7.500000	7.500000	7.699997	7.699997	7.599998	7.500000	7.199997	7.099998	6.599998	6.900002	6.099998	6.900002	6.699997	5.900002	6.599998	6.599998	6.199997	7.000000	6.699997	6.699997	7.099998	6.800003	7.199997	7.300003
QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256

[smelni]

upstream

IndexLock StatusFrequency (Hz)Symbol Rate (KSym/sec)Power Level (dBmV)ModulationChannel Type

1	2	3	4
ACTIVE	ACTIVE	ACTIVE	ACTIVE
30100000	17300000	23700000	36500000
5120	5120	5120	5120
47.020599	47.020599	46.770599	47.270599
64QAM	64QAM	64QAM	64QAM
US_TYPE_STDMA	US_TYPE_STDMA	US_TYPE_STDMA	US_TYPE_STDMA