We have a number of old 2000 boxes (Jensens) which we have been recommended
by our support engineers to upgrade to 4.0d for millennium compliance. They
were running 4.0.
Under 4.0 we used a default kernel configuration and had no problems running
our software which uses the inbuilt COM2 serial port (/dev/tty01). The COM1
port is used by the console since the systems have no graphics head.
After the upgrade we found that trying to open the device /dev/tty02 gives
an open failure. We have hunted around, and been recommended to try various
things including:
deleting the special files and recreating using MAKEDEV ace0
rebuilding the kernel
Neither have achieved the desired result. There has been no change in the
hardware so we have not rerun the EISA config (the site engineers did not
seem very keen to try this, I think they have had bad problems with ECU).
Anyone got any ideas? Does a simple upgrade require ECU to be rerun?
Maybe this would help: if you try to run something like cat or echo with
output redirected to the device you get a message back
cannot create /dev/tty01
The special files are set world read/write
regards
malcolm
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Malcolm Melville email: malcolm_at_eml.co.uk
Enterprise Melville Limited Tel: +44 1435 869911
Network and Aviation Consultancy Fax: +44 1435 869912
Mobile: 07771 78-14-78
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Received on Mon Dec 28 1998 - 14:30:34 NZDT