Date: Fri, 09 Jan 2009 09:53:53 +0000 From: Poul-Henning Kamp <phk@phk.freebsd.dk> To: current@freebsd.org Subject: 3G modem and USB, old & new Message-ID: <3994.1231494833@critter.freebsd.dk>
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I tried using my 3g modem (Huawei E196) yesterday, with both the old and the new USB stack, and it fails in slightly different ways. With the old USB stack, it works until I actually try to get a packet of more than approx 1024 bytes through, at which point it hangs with ucom0: ucomreadcb: IOERROR And I need to stop and start ppp(1) to get it working until the next big packet comes around. It does not help to reduce the MRU because two small packets back to back will also trigger this error. With the new USB stack, I am not able to talk to the modem at all using the cuaU* devices. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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