>Number:         5032
>Category:       port-i386
>Synopsis:       problems accessing com0 (modem) with new mbr-kernel
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 21 03:20:00 1998
>Last-Modified:
>Originator:     Thorsten Frueauf
>Organization:
private
	
>Release:        <NetBSD-current source date> NetBSD current (1.3D) 20.2.1998
>Environment:
	
System: NetBSD cyberlap 1.3D NetBSD 1.3D (CYBERLAP) #0: Fri Feb 20 00:26:30 MET 1998 frueauf@cyberlap:/src/sys/arch/i386/compile/CYBERLAP i386

cpu0: family 5 model 2 step c
cpu0: Intel Pentium (P54C) (586-class)
real mem  = 50069504
avail mem = 44965888
using 636 buffers containing 2605056 bytes of memory
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o enabled, memory enabled
Toshiba Info Systems (2nd PCI Vendor ID) product 0x0601 (host bridge, revision 0x11) at pci0 dev 0 function 0 not configured
Chips and Technologies 65550 (VGA display, revision 0x05) at pci0 dev 4 function 0 not configured
isa0 at mainbus0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
lpt0 at isa0 port 0x378-0x37b irq 7
wdc0 at isa0 port 0x1f0-0x1f7 irq 14
atapibus0 at wdc0
wd0 at wdc0 drive 0: <TOSHIBA MK2101MAN>
wd0: 2067MB, 4200 cyl, 16 head, 63 sec, 512 bytes/sec
wd0: using 16-sector 16-bit pio transfers, lba addressing
wdc1 at isa0 port 0x170-0x177 irq 15
atapibus1 at wdc1
cd0 at atapibus1 drive 0: <TOSHIBA CD-ROM XM-1402B, 7510115238, 0186> type 5 cdrom removable
sb0 at isa0 port 0x220-0x237 irq 5 drq 1: dsp v3.02
audio0 at sb0
npx0 at isa0 port 0xf0-0xff: using exception 16
vt0 at isa0 port 0x60-0x6f irq 1
vt0: generic, 80 col, color, 8 scr, mf2-kbd, [R3.32]
pms0 at vt0 irq 12
spkr0 at vt0 port 0x61
vt0: console
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
pcic0 at isa0 port 0x3e0-0x3e1 iomem 0xd0000-0xd3fff: using irq 3
pcic0: controller 0 (Intel 82365SL Revision 1) has sockets A and B
pcmcia0 at pcic0 controller 0 socket 0
pcmcia0: CIS version 2.0 or 2.01
pcmcia0: CIS info: 3Com Corporation, 3C589, TP/BNC LAN Card Ver. 2a, 000002
pcmcia0: Manufacturer code 0x101, product 0x589
pcmcia0: function 0: network adapter, ccr addr 10000 mask 3
pcmcia0: function 0, config table entry 1: I/O card; irq mask ffff; iomask 4, iospace 0-f; rdybsy_active wp_active bvd_active io8 io16 irqlevel
pcmcia0: function 0, config table entry 3: I/O card; irq mask ffff; iomask 4, iospace 0-f; rdybsy_active wp_active bvd_active io8 io16 irqlevel
ep0 at pcmcia0 function 0pcmcia0: card irq 9
 port 0x330-0x33f: 3Com 3C589 Ethernet
ep0: MAC address 00:60:97:40:bc:a7
ep0: 8KB byte-wide FIFO, 5:3 Rx:Tx split, utp/aui/bnc (default utp)
pcmcia1 at pcic0 controller 0 socket 1
pcmcia1: CIS version 2.0 or 2.01
pcmcia1: CIS info: Adaptec, Inc., APA-1460 SCSI Host Adapter, Version 0.01
pcmcia1: Manufacturer code 0x12f, product 0x2
pcmcia1: function 0: multi-function, ccr addr 2000 mask 1
pcmcia1: function 0, config table entry 9: I/O card; irq mask 1e00; iomask a, iospace 340-35f; rdybsy_active wp_active bvd_active io16 irqlevel
pcmcia1: function 0, config table entry 8: I/O card; irq mask 1e00; iomask a, iospace 140-15f; rdybsy_active wp_active bvd_active io16 irqlevel
aic0 at pcmcia1 function 0 port 0x340-0x35f: APA-1460 SCSI Host Adapter
scsibus0 at aic0: 8 targets
sd0 at scsibus0 targ 0 lun 0: <IBM, DCAS-34330, S65A> SCSI2 0/direct fixed
sd0: 4134MB, 8205 cyl, 6 head, 171 sec, 512 bytes/sect x 8467200 sectors
pcmcia1: card irq 9
apm0 at mainbus0: Power Management spec V1.1
apm0: battery life expectancy: 96%
apm0: A/C state: on
apm0: battery charge state: high charging
apm0: estimated 1h 28m
biomask c240 netmask c240 ttymask d2ca
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs

 Aperture driver for XFree86 version 1.6
pcmcia0: card irq 11
lpt0: out of paper

>Description:
	
I compiled a new kernel with COMPAT_386BSD_MBRPART enabled and did all
what Matthias Drochner described in his readme. All worked fine for
booting (with new mbr id) until I tryed to connect via modem to my
ppp account. It seemed it was not able to set DTR on the modem and can't
dial at all. pppd did not exit normal on kill, I had to kill -9.

So I reverted the mbr-id and booted with a kernel made a day before
(19.2.98 source) and all worked well :-/

With looking at what changed in the source I have no idea why this effects
my serial port - but it does. So I wanted at least report the problem,
although I have no idea why this is.

>How-To-Repeat:
	
Try to access a modem via pppd or seyon (no matter) on a Laptop Toshiba
Tecra 500 CDT with a kernel compiled from 20.2.1998 sources, and watch it
fail.

>Fix:
	
None known, sorry :(
>Audit-Trail:
>Unformatted:
problems accessing com0 (modem) with new mbr-kernel