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kern/49235: can't send fax anymore with 6.1.4 kernel
>Synopsis: can't send fax anymore with a 6.1.4 kernel
>Arrival-Date: Wed Sep 24 09:00:00 +0000 2014
>Originator: Ignatios Souvatzis
>Release: NetBSD 6.1.4_PATCH
System: NetBSD marie 6.1.4_PATCH NetBSD 6.1.4_PATCH (MARIE) #4: Sat Aug 23 20:25:06 CEST 2014 is@henrietta:/var/itch/sources/6.1/obj.shark/sys/arch/shark/compile/MARIE shark
com0 at ofisa0 (serial@i3f8): ns16550a, working fifo
com1 at ofisa0 (ir@i2f8): ns16550a, working fifo
When sending a fax, actual fax transmission aborts a few
seconds (according to log) after starting the first page;
the receiving fax machine prints the first ca. three (dot) lines.
The sendfax process sees this error at this point:
09/24 08:30:53 y00 input: got [0d][0a]+FHS:43[0d][0a]
FHS:43 is "DTE to DCE data underflow "
which points to something broken with flow control.
Debug output sees us sending more data, 64bytes at a time,
continuing until the page has been sent.
the serial used is com0 - see above.
faxspool ... ; faxrunq
workaround: rebooting to the 5.1.3_PATCH kernel
(obviously only with 5.1.3 userland)
On this kernel,
checked with 5.1.3_PATCH userland / mgetty-1.1.37nb9
checked with 6.1_PATCH userland / mgetty-1.1.37nb10
resulting in the same error.
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