Messages in this thread |  | | | Date | Tue, 14 Oct 1997 20:31:13 -0700 (PDT) | | From | "Mr. James W. Laferriere Network Engineer" <> | | Subject | Re:Using both serial ports at the same time, Summary please ... |
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Hello Nicholas,
The conditions with mine seem to be near the same except that I put the internal modem in & -both- the on board serial ports are totally un-usable. 33.6 modem at com3 one of the on board ports at com1 or 2 , The kernel would see at most 2 but then any access to either the modem or either of the onboard ports would elicit no responce from any piece of software that used serial. ( ckermit, minicom, pppd.... ) The bios would see 1 or 2 of them, at least according to the bios screen at bootup .
I've even tried 33.6 at com1 & one of the on board ports at com2 or com3 or com4, still wouldn't activate the port under linux(2.0.3x) . Take the Modem out & I can use both .
This sounds like something in the bios is buggered in my case .
I've even gone back to the defaults, starting over & -just- modifing the serial ports one item at a time, still the same .
1 or 2 ports found and still will not let me access either of the ports found IF it finds 2, If only one is found I can use just that one .
Tia, JimL
On Tue, 14 Oct 1997, Nicholas J. Leon wrote: > At 12:16 PM 10/12/97 -0700, Mr. James W. Laferriere Network Engineer wrote: > > > > Hello Nicholas, Please be kind & post a summary ? Tia, JimL > > Ok, it was pretty straight forward: > > The problem > ----------- > I could only open and use 1 serial port of my 2 built in ones at the same > time. They were set for the normal IRQ' and ports for COM1 & COM2. > > If I had one open (say a PPP connection) and attempted to use the other > (say, as a serial terminal [agetty ttyS1 9600]), both would SLOW DOWN to > amazing levels (like 10 characters per minute). > > As soon as I closed either port, the other would come back up with no > problems and no errors. > > All the time, the kernel never reported any problems. I did not test this > under any other OS than Linux as I don't have any other installed on that box. > > I tried in my AMI bios to move the serial ports to various other settings > (ie, COM1-COM4) to no effect. > > The solution > ------------- > I put in an internal modem into my 'puter, set it as COM3 and dialed out to > my PPP account. > > I then attempted to use on of the two inboard ports. No problems!! If I > tried using all three, the two built-in ones would exhibit the same problem > as before, but the third would happily buzz along. > > The Results > ------------ > My mobo's serial ports are fried :( I traded my external 36.6 modem for an > internal variety and everything works as expected. > > _____________________________________________________________________________ > > simple is elegant nicholas@binary9.net > _____________________________________________________________________________
+-----------------------------------------------------------------------+ | James W. Laferriere - Network Engineer - babydr@nwrain.net | | System Techniques - 25416 - 22nd S. - Kent, WA 98032 | | Give me VMS -or- Give me Linux -but- only on AXP | +-----------------------------------------------------------------------+ |-> Linux-Vax Port, Now in Progress !YAY! there's Progress To Report <-| |-> Please See http://ucnet.canberra.edu.au/~mikal/vaxlinux/home.html <-| |-> Maintainer: Michael Still mikal@blitzen.canberra.edu.au <-| +-----------------------------------------------------------------------+
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