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grosmano
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PostPosted: Thu Nov 15, 2018 12:50 pm    Post subject: Reply with quote

NeddySeagoon wrote:
We still don't know what changed or why it works.

Sure. Actually i don't even see evidence that anything has changed since the opening of this thread, apart from the acquisition of the dongle.

Quote:
Does the LED in the dongle flash green or blue?
If its green, its going to be slow. Blue indicates 3G. Green is the older, slower data rate (9600 baud?)
Mobile carriers mostly oversell their data bandwidth by a huge margin, so when its busy its slow.

It flashes blue, but still the connection feels very slow, much slower than from the phone. I guess it takes some numbers rather than feelings and i see some websites offer speed tests. I will try from home to connect to such a site from the phone and then from the computer with the usb dongle for better comparison.
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grosmano
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PostPosted: Thu Nov 15, 2018 7:39 pm    Post subject: Reply with quote

Here are some numbers according to dslreports.com:
- from the computer with the usb dongle: 55.8 kilobit/s down, 62.6 kilobit/s up;
- from the phone: 2.57 megabit/s down, 2.43 megabit/s up.
"feels slower"
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NeddySeagoon
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PostPosted: Thu Nov 15, 2018 8:48 pm    Post subject: Reply with quote

grosmano,

If it were a real serial port
Code:
Baud = 115200
sets the bit rate on the interface.

Try commenting that line out in the wvdial.conf file but I suspect that its ignored anyway.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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grosmano
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PostPosted: Thu Nov 15, 2018 9:38 pm    Post subject: Reply with quote

Yes, looks like it is ignored: no significant effect on the speed that remains in the order of 10s of kbit/s (67 down, 61 up).

It just made me think of another thing to check: as i plug the dongle, there is in dmesg "new full speed USB device number 6 using uhci_hcd", which apparently would be usb 1.0. Could this be the bottleneck? On the other hand when i plug my external hdd, which is reasonably fast, it says it is using ehci-pci.
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NeddySeagoon
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PostPosted: Fri Nov 16, 2018 6:26 pm    Post subject: Reply with quote

grosmano,

USB 1.0 is 12Mbit/sec. That should support 10Mbit/sec download, so its not that.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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grosmano
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PostPosted: Mon Nov 19, 2018 7:40 pm    Post subject: Reply with quote

Ok, thanks.
I guess at this point i'd better try to be in direct contact with some technical service from vodafone. Hopefully they don't just tell me to double check the dongle is plugged in an usb port and not the ethernet port.
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NeddySeagoon
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PostPosted: Mon Nov 19, 2018 9:28 pm    Post subject: Reply with quote

grosmano,

They will say

Have you restarted Windows?
We don't support Linux.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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grosmano
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PostPosted: Tue Nov 20, 2018 8:15 pm    Post subject: Reply with quote

A simple test i should have done much earlier :oops: : with the sim card from my phone in the dongle it is 40x faster than with the secondary card. I will get the latter changed...
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