[pkg-ntp-maintainers] Bug#484707: ntpd: refclock_palisade fails with event polling

[Patrick Loschmidt]

Package: ntp
Version: 1:4.2.2.p4+dfsg-2
Severity: normal

The palisade reference clock for synchronization with GPS doesn't output 
correct RTS pulses, which are required to trigger timestamps in the 
receiver.
The reason for this is, that there is an implicit timing assumption 
about the get_systime call on line 851. Since the RTS signal on the 
serial interface is set on line 837 and turned off on line 853, the 
pulse width is only dependent on the duration of the get_systime call. 
On fast processing, the pulse width is of RTS to short, to generate 
correct signal levels on the RS232 interface output.

The problem seams to be dependent on the platform and/or serial 
interface (didn't have troubles with USB2serial converters or on other 
computers).

I strongly suggest to add an usleep(10); call after the get_systime call 
to fix this problem (working solution on my system). 

-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-6-amd64
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages ntp depends on:
ii  adduser                3.102             Add and remove users and groups
ii  libc6                  2.3.6.ds1-13etch5 GNU C Library: Shared libraries
ii  libcap1                1:1.10-14         support for getting/setting POSIX.
ii  libreadline5           5.2-2             GNU readline and history libraries
ii  libssl0.9.8            0.9.8c-4etch3     SSL shared libraries
ii  lsb-base               3.1-23.2etch1     Linux Standard Base 3.1 init scrip
ii  netbase                4.29              Basic TCP/IP networking system
ii  perl                   5.8.8-7etch3      Larry Wall's Practical Extraction 

ntp recommends no packages.

-- no debconf information