Problem with pcmcia serial GPRS/EDGE modem

[Grzeniek]

Hi,

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).

>From dmesg:
pccard: CardBus card inserted into slot 0
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

>From lspci -vv:
02: 04.0 CardBus bridge: ENE Technology Inc CB-712/4 Cardbus Controller (rev 10)
        Subsystem: Acer Incorporated [ALI] Unknown device 007a
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium
>TAbort+ <TAbort- <MAbort- >SERR- <PERR-
        Latency: 168, Cache Line Size 20
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at b0005000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
        Memory window 0: 80000000-81fff000 (prefetchable)
        Memory window 1: b2000000-b3fff000
        I/O window 0: 0000a000-0000a0ff
        I/O window 1: 0000a400-0000a4ff
        BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite+
        16-bit legacy interface ports at 0001

03:00.0 Network controller: Broadcom Corporation BCM43xG 802.11b/g (rev 03)
        Subsystem: Unknown device 18de:0003
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at b2000000 (32-bit, non-prefetchable)
[disabled] [size=8K]

03:00.1 Serial controller: Broadcom Corporation Unknown device 4344
(rev 03) (prog-if 02 [16550])
        Subsystem: Unknown device 18de:0003
        Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort+
<TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin A routed to IRQ 16
        Region 0: I/O ports at a000 [size=256]

uname -a:
Linux laptop 2.6.16-1.2133_FC5 #1 Tue Jun 6 00:52:14 EDT 2006 i686
i686 i386 GNU/Linux

I don't know if this card should use serial_cs module, but now it
don't load this module.

I really don't know how to make this card working properly, and I need
your help.

---
Grzegorz Lechowicz