Messages in this thread | | | Subject | Re: serial problems (was Re: serial (PPP) stomping on parport?) | Date | Wed, 10 Jun 1998 07:00:04 -0700 | From | Jurgen Botz <> |
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"Etienne Lorrain" wrote: > What is the output of "ls -l /dev/ttyS*", "ls -l /dev/cua*" ? > Is the serial port in-use when you try to configure it > (uugetty or gpm running) ? > Are your serial ports enabled in BIOS ? Is there IRQ or I/O > conflicts (cat /proc/ioports) ?
No, no, these are not the issue. Those of us who are seeing this can make it work by simply booting an older kernel without changing anything else.
> What is the result of "strace setserial <your parameter>" ?
Good idea... I keep forgetting about the usefullness of strace for this sort of thing:
[root@nova i386]# strace /bin/setserial -v /dev/ttyS2 port 0x220 irq 5 autoconfig execve("/bin/setserial", ["/bin/setserial", "-v", "/dev/ttyS2", "port", "0x220", "irq", "5", "autoconfig"], [/* 31 vars */]) = 0 brk(0) = 0x804bcec open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=0, st_size=0, ...}) = 0 mmap(0, 23854, PROT_READ, MAP_PRIVATE, 3, 0) = 0x4000b000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY) = 3 mmap(0, 4096, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40011000 munmap(0x40011000, 4096) = 0 mmap(0, 669752, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40011000 mprotect(0x400a2000, 75832, PROT_NONE) = 0 mmap(0x400a2000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x90000) = 0x400a2000 mmap(0x400a9000, 47160, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMO US, -1, 0) = 0x400a9000 close(3) = 0 personality(0 /* PER_??? */) = 0 getpid() = 9136 open("/dev/ttyS2", O_RDWR|O_NONBLOCK) = 3 ioctl(3, TIOCGSERIAL, 0xbffff800) = 0 ioctl(3, TIOCSSERIAL, 0xbffff7c4) = -1 EINVAL (Invalid argument) write(2, "Cannot set serial info: Invalid "..., 41Cannot set serial info: Invalid argument ) = 41 _exit(1) = ?
> Are the failing ports software PNP modem ?
No, the failing ports are additional serial ports on ISA card, in at least some cases with 16650 UART (anybody who have a problem /not/ have a 16650 UART?)
> Is serial compiled as module (".config" serial related lines) ?
No.
> What is your hardware (Intel UP/SMP) ?
Intel PII, SMP board with just one CPU.
-- ~~/ /~) /.. /-< \_/ u r g e n /_ _) o t z
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