Re: [MiNT] Network and USB problems with NetUSBee

[Peter Slegg <p.slegg@scubadivers.co.uk>]

On Mon, 20 Jun 2011 13:33:36 , Lars Schmidbauer <latzmaster@gmx.de> wrote:
> Hello,
>
> i have a strange problem with my new NetUSBee and MiNT (1.17.0 and 1.18.CUR).
> This is not so easy to explain, hope it doesn't get too long ;-)
>
> Every kind of networking with small files works normal (Highwire, MyMail, AtarICQ,
> GEMDict, zWeather, nfs+ftp+telnet to ubuntu-PC).
> But bigger downloads (with Highwire, Litchi, wget or ftp on console) are stopping after
> a while; FalcAmp runs into buffer underrun problems soon.
> The connection is not really broken, but download stops (and stops at a different point
> when trying again).
> For example:
> - Highwire, doing a google picture search is running correct and fast (many small picture-
>   files); downloading small files from freemint CVS works ok, too. But when Highwire tries to
>   load the big pictures from http://ctpci.atari.org/, transmission stops and only the smaller
>   ones are displayed.
> - wget on console, downloading daily freemint build stops at various points. I can't see that
>   there's a definite "magic barrier" where it stops.
> - ftp on console, kurobox.serveftp.net, download of /video-films/zmerge2.zip stops (same as wget).
> - MyMail stops randomly at downloading mail x of xxx.
>
> I can't even define how big "smaller" or "bigger" files are.
> This happens only with MiNT! Everything (Highwire, GAPftp, FalcAmp...) works correct with TOS
> and StinG with enec6.stx. Because of that, NetUSBee should be OK.
> There are similar problems with my NE2000 ISA network card (EtherNEC), but this card is very
> old and second-hand, i always thought that this is another issue.
>
> Tested on two Falcons:
> - Falcon/CT60@80MHz/CTPCI, clockpatch on U63
> - Falcon/CT63@66MHz, no clockpatch, SDMA patch 50 Ohm/27 pF
> with drivers
> - enec6.xif (CT60 archive or www.newtosworld.de)
> - ne2kenec.xif (http://assemsoft.atari.org/ne2k/)
> - inet4.xdd (freemint build or http://assemsoft.atari.org/ne2k/)
>
> The ne2kenec.xif seems to work a little bit better than enec6.xif.
> Sure i checked all the valid files for setting up networking:
> config.if, defaultroute, resolv.conf, hostname, /stik_cfg/default.cfg, /highwire/modules/...
> Ping, traceroute, netstat work correct; ifconfig shows no serious problems (sometimes
> a few in-errors <10).
> --------
> ifconfig ne0:
> ne0:    flags=0x43<UP,BROADCAST,RUNNING>
>         inet 192.168.0.3 netmask 255.255.255.0 broadcast 192.168.0.255
>         metric 0 mtu 1500
> Router and network-cable are OK, too.
>

I had the same problem when switching from 1.15.12 to 1.16

The problem was never found in Mint but I managed to fix it by reducing the
adsl-modem MTU size setting.

There were several long threads on the mintlist about this and the floppy
drive issue.

I found that files of much over 3k would not download.

Regards,

Peter