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Article #430Problem with getty on serial ports
From: Martin Liddle
Date: Mon, 10 Jan 2000 00:00
Date: Mon, 10 Jan 2000 00:00
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2375 bytes
I'm still struggling up the Linux learning curve, I am making progress but... I thought I understood serial ports reasonably well. I've certainly written BIOS level serial drivers in the past. But I have a problem where I can't see the way forward. I have read the Serial-HOWTO but haven't yet found a solution to my problem. I have two essentially identical PCs running RedHat 6.0. The installations are both recent. Both PCs have two standard serial ports and a Specialix SI multi port intelligent serial adaptor. The Specialix are using the current driver from the Specialix FTP site. On one PC I can run a getty (for a Wyse terminal) on either the standard serial ports or the Specialix. On the other PC attempting to run a getty on either the standard serial port or the Specialix fails with the "..respawning too fast. Disabled for 5 minutes" message. I have tried on ttyS1 with both the standard RedHat kernel and a kernel that I have built. However I can successfully do a "cp file /dev/ttyS1" which leads me to suspect that the hardware isn't completely dead. I also know that the hardware was working correctly very recently under an old version of Sunsoft Interactive Unix. (Unfortunately I can't easily go back and check again as the Linux install seems to have clobbered Interactive in some way.) The respawning problem may well be due to some error on my part during installation but I need a clue as to what to look for. Anybody any suggestions as to what to do next? -- Martin Liddle, Tynemouth Computer Services, 27 Garforth Close, Cramlington, Northumberland, England, NE23 6EW. Phone: 01670-712624. Fax: 01670-717324.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10d8ad,1e9ec9998979b857,start X-Google-Attributes: gid10d8ad,public X-Google-Thread: fac57,1e9ec9998979b857,start X-Google-Attributes: gidfac57,public From: Martin Liddle <martin@tcs02.demon.co.uk> Subject: Problem with getty on serial ports Date: 2000/01/10 Message-ID: <VcTd2FA1Mce4Ewrg@tcs02.demon.co.uk> X-Deja-AN: 570685070 X-NNTP-Posting-Host: tcs02.demon.co.uk:158.152.154.159 X-Trace: news.demon.co.uk 947504349 nnrp-10:23493 NO-IDENT tcs02.demon.co.uk:158.152.154.159 Organization: Tynemouth Computer Services MIME-Version: 1.0 Newsgroups: uk.comp.os.linux,demon.tech.unix X-Complaints-To: abuse@demon.net