Problem with pcmcia serial GPRS/EDGE modem

[Grzeniek]

Hi again,

I still have this problem with GPRS modem SonyEricsson GC89. What I
found is if i boot system with kernel parameter acpi=off everything
work great. I have got transfer about 20KB/s. When I boot with acpi
enabled I have transfers about 900B/s and a lot of ppp0 rx errors
(about 25%).
I tried few Linux distributions (FC5, FC7, Ubuntu 6.04, Ubuntu 7,04,
Ubuntu 7.10).

I still don't know if this problem is related to pcmcia
(yenta_socket), but I have got no idea what and where should I look
for. I really need to have this modem working, and I think I need
Yours help.

Grzegorz

PS. Again sorry for my English
2006/6/25, Dominik Brodowski <linux at dominikbrodowski.net>:
> Hi,
>
> On Sun, Jun 25, 2006 at 09:42:52AM +0200, Grzeniek wrote:
> > I got a SonyEricsson GC89 GPRS/EDGE pcmcia card, but I can't get to work it
> > (on my laptop Acer TravelMate 4152LMi).
> > The problem is that the connection is very, very slow (download rate about
> > 0,5KB/s).
> > The system (FedoraCore 5) can recognize this card, after inserting card
> > creates /dev/ttyS4 node,
> > then I can make ppp connection to my provider. But this connection is really
> > very slow, and I think
> > it is not the problem with modem or ppp settings (with WinXP it works
> > great).
>
> It seems to me that this is either a settings problem or a driver-sepcific
> problem. Also it isn't a PCMCIA-related problem, as
>
> > pccard: CardBus card inserted into slot 0
>
> it is a CardBus card, which is correctly initialized:
>
> > PCI: Enabling device 0000:03:00.1 (0000 -> 0001)
> > ACPI: PCI Interrupt 0000:03:00.1[A] -> GSI 16 (level, low) -> IRQ 16
> > 0000:03:00.1: ttyS4 at I/O 0xa000 (irq = 16) is a 16550A
>
> And as it is a CardBus card, it won't show up in /sys/bus/pcmcia/devices/
> either.
>
>         Dominik
>
> PS: Your English is excellent.
> PPS: Please send such messages to the relevant mailing list (in this case
> linux-pcmcia at lists.infradead.org), too -- a subsystem maintainer might be
> travelling, on vacation, or too busy to reply while others on such mailing
> lists might be able to respond sooner.
>