This is 5.2/i386 on an IBM Thinkpad T40. As this laptop does not have
a serial port, I bought me this USB-to-serial gizmo:

uplcom0 at uhub2 port 2 "Prolific Technology Inc. USB 2.0 To COM Device" rev 
1.10/3.00 addr 2
ucom0 at uplcom0

I am trying to an ALIX running current/i386.
>From a machine with a serial port, I connect as

        cu -l /dev/cua00 -38400

and it works fine. The baudrate is indeed 38400;
it is set so on the ALIX, and /etc/boot/conf says

        stty com0 38400
        set tty com0

Now from this Thinkpad, I try to connect with

        cu -l /dev/cuaU0 -38400

That say 'Connected', but nothing else happens.
I can see a garbled login screen such as

        kXKMr/i386 (gw.stare.cz) (tty00)
        login:
                -i

I usually see something like that with a wrong baudrate.

There is no reaction to nothing.
All I can do is ~. to disconnect.

What kind of problem is this?
Can my ucom do 38400? How do I find out?
Would it make sense to try other baudrates
(on both the ALIX and my end, obviously)?
Is anybody using an USB-to-serial connection to an ALIX?

        Jan


OpenBSD 5.2 (GENERIC) #278: Wed Aug  1 10:04:16 MDT 2012
    dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Pentium(R) M processor 1500MHz ("GenuineIntel" 686-class) 1.50 
GHz
cpu0: 
FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,TM,SBF,EST,TM2
real mem  = 804188160 (766MB)
avail mem = 780189696 (744MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 06/18/07, BIOS32 rev. 0 @ 0xfd750, SMBIOS 
rev. 2.33 @ 0xe0010 (61 entries)
bios0: vendor IBM version "1RETDRWW (3.23 )" date 06/18/2007
bios0: IBM 237382G
apm0 at bios0: Power Management spec V1.2
acpi at bios0 function 0x0 not configured
pcibios0 at bios0: rev 2.1 @ 0xfd6e0/0x920
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdea0/272 (15 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #6 is the last bus
bios0: ROM list: 0xc0000/0x10000 0xd0000/0x1000 0xd1000/0x1000 0xdc000/0x4000! 
0xe0000/0x10000
cpu0 at mainbus0: (uniprocessor)
cpu0: Enhanced SpeedStep 1496 MHz: speeds: 1500, 1400, 1200, 1000, 800, 600 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
io address conflict 0x5800/0x8
io address conflict 0x5808/0x4
io address conflict 0x5810/0x8
io address conflict 0x580c/0x4
pchb0 at pci0 dev 0 function 0 "Intel 82855PM Host" rev 0x03
intelagp0 at pchb0
agp0 at intelagp0: aperture at 0xd0000000, size 0x10000000
ppb0 at pci0 dev 1 function 0 "Intel 82855PM AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon Mobility M7" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
radeondrm0 at vga1: irq 11
drm0 at radeondrm0
uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x01: irq 11
uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x01: irq 11
uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x01: irq 11
ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x01: irq 11
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb1 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x81
pci2 at ppb1 bus 2
mem address conflict 0xb0000000/0x1000
mem address conflict 0xb1000000/0x1000
cbb0 at pci2 dev 0 function 0 "TI PCI1520 CardBus" rev 0x01: irq 11
cbb1 at pci2 dev 0 function 1 "TI PCI1520 CardBus" rev 0x01: irq 11
em0 at pci2 dev 1 function 0 "Intel PRO/1000MT (82540EP)" rev 0x03: irq 11, 
address 00:0d:60:7f:83:fa
ipw0 at pci2 dev 2 function 0 "Intel PRO/Wireless 2100" rev 0x04: irq 11, 
address 00:0c:f1:16:9b:b8
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 3 device 0 cacheline 0x8, lattimer 0xb0
pcmcia0 at cardslot0
cardslot1 at cbb1 slot 1 flags 0
cardbus1 at cardslot1: bus 6 device 0 cacheline 0x8, lattimer 0xb0
pcmcia1 at cardslot1
ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x01: 24-bit timer 
at 3579545Hz
pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x01: DMA, channel 0 
configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <HTS548040M9AT00>
wd0: 16-sector PIO, LBA, 35087MB, 71859186 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, DVD-ROM GDR8083N, 0K03> ATAPI 5/cdrom 
removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x01: irq 11
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 256MB DDR SDRAM non-parity PC2700CL2.5
spdmem1 at iic0 addr 0x51: 512MB DDR SDRAM non-parity PC2100CL2.5
auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x01: irq 11, ICH4 
AC97
ac97: codec id 0x41445374 (Analog Devices AD1981B)
ac97: codec features headphone, 20 bit DAC, No 3D Stereo
audio0 at auich0
"Intel 82801DB Modem" rev 0x01 at pci0 dev 31 function 6 not configured
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics touchpad, firmware 5.9
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt2 at isa0 port 0x3bc/4: polled
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
mtrr: Pentium Pro MTRR support
uplcom0 at uhub2 port 1 "Prolific Technology Inc. USB 2.0 To COM Device" rev 
1.10/3.00 addr 2
ucom0 at uplcom0
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on wd0a (3a9f38780353c4cf.a) swap on wd0b dump on wd0b
sd0 at scsibus2 targ 1 lun 0: <OPENBSD, SR CRYPTO, 005> SCSI2 0/direct fixed
sd0: 20354MB, 512 bytes/sector, 41685328 sectors
ucom0 detached
uplcom0 detached
uplcom0 at uhub2 port 2 "Prolific Technology Inc. USB 2.0 To COM Device" rev 
1.10/3.00 addr 2
ucom0 at uplcom0

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