just to let everyone know that I finally found the solution:
The Windoze Control Panel/Config stuff is broken. You have to
use a DOS utility that resides in C:\THINKPAD called ps2.exe
ps2 se enable
ps2 sera enable
ps2 sera add 1
ps2 ? sera
This does the job. Enjoy....
"Dirk W. Steinberg" wrote:
>
> Hi,
>
> has anyone succeeded in using the serial port on an
> IBM ThinkPad 770X notebook unser Linux?
>
> I have been unlucky so far:
>
> root@ibmtop:pts/0 ~ # id
> uid=0(root) gid=0(root) groups=0(root)
> root@ibmtop:pts/0 ~ # cat /proc/devices
> Character devices:
> 1 mem
> 2 pty
> 3 ttyp
> 4 ttyS
> 5 cua
> ....
> root@ibmtop:pts/0 ~ # ll /dev/ttyS[01]
> 0 crw-rw---- 1 root dialout 4, 64 Feb 23 04:42 /dev/ttyS0
> 0 crw-rw---- 1 root dialout 4, 65 Feb 23 04:42 /dev/ttyS1
> root@ibmtop:pts/0 ~ # cu -l /dev/ttyS0
> cu: open (/dev/ttyS0): Permission denied
> cu: /dev/ttyS0: Line in use
> zsh: 5731 exit 1 cu -l /dev/ttyS0
>
> >From strace cu:
> open("/dev/ttyS0", O_RDWR|O_NONBLOCK) = -1 EACCES (Permission denied)
>
> But this is as superuser (root). How is this possible at all?
>
> I have tried a number of things:
>
> 1. It is enabled in the Control Panel of Windows 98
> 2. It work under Windows 98
> 3. I tried leaving the resources as auto-configure in Win
> 4. I tried setting the resources of COM1 to IRQ 4, I/O 0x3f8 in Win
> 5. I tried setserial
>
> root@ibmtop:pts/0 ~ # setserial /dev/ttyS0
> /dev/ttyS0, UART: unknown, Port: 0x03f8, IRQ: 4
> root@ibmtop:pts/0 ~ # setserial -av /dev/ttyS0
> /dev/ttyS0, Line 0, UART: unknown, Port: 0x03f8, IRQ: 4
> Baud_base: 115200, close_delay: 50, divisor: 0
> closing_wait: 3000, closing_wait2: infinite
> Flags: spd_normal
>
> I could also manually set the type to 16550A, but it doesn't help either.
>
> 6. I tried CONFIG_SERIAL_DETECT_IRQ in the Linux kernel config
> From dmesg:
>
> Serial driver version 4.27 with HUB-6 MANY_PORTS MULTIPORT SHARE_IRQ DETECT_IRQ enabled
> ttyS01 at 0x02f8 (irq = 3) is a 16550A
>
> ttyS01 presumably is the IrDa port, which I set to 3/0x2f8.
>
> This is Kernel 2.2.9, but I also tried 2.2.{2,5,8} and 2.1.x
>
> 7. Rebooting from Win to Linux doesn't help
>
> 8. Finally I tried this:
>
> root@ibmtop:pts/0 ~ # chmod 777 /dev/ttyS[01]
> root@ibmtop:pts/0 ~ # setserial -av -z /dev/ttyS0 port 0x03f8 auto_irq autoconfig
> /dev/ttyS0, Line 0, UART: unknown, Port: 0x03f8, IRQ: 4
> Baud_base: 115200, close_delay: 50, divisor: 0
> closing_wait: 3000, closing_wait2: infinite
> Flags: spd_normal auto_irq
>
> root@ibmtop:pts/0 ~ # cu -l /dev/ttyS0
> Connected.
> cu: Got hangup signal
>
> Disconnected.
>
> I'm lost! Any ideas/help? I desperately need that stupid serial port.... :-(
>
> Thanks for any pointers,
>
> Dirk
>
> BTW: Are there any IrDa drivers for the TP770X built-in Fast IrDa port?
> Or maybe just in Slow IrDa mode?
>
> --
> Dipl.-Ing. Dirk W. Steinberg
> __________________________________________________
> Consultant Technologieberatung Informationssysteme
> DETECON GmbH, Oberkasseler Strasse 2, 53227 Bonn
> Tel.: (0228) 700-1277 Fax: (0228) 700-1157
> Mobil: (0171) 221 6585 Internet: www.detecon.de
-- Dipl.-Ing. Dirk W. Steinberg __________________________________________________ Consultant Technologieberatung Informationssysteme DETECON GmbH, Oberkasseler Strasse 2, 53227 Bonn Tel.: (0228) 700-1277 Fax: (0228) 700-1157 Mobil: (0171) 221 6585 Internet: www.detecon.de- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/