[ntp:questions] kernel pps

unruh unruh at invalid.ca
Wed Feb 8 17:45:09 UTC 2012

On 2012-01-19, Chris Adams <cmadams at hiwaay.net> wrote:
> Once upon a time, unruh  <unruh at invalid.ca> said:
>>I assume you mean pps_core, which I do have. Unfortunately nothing seems
>>to happen. If I try ldattach 18 /dev/ttyS0 ( and yes there is a ttyS0 )
>>I get an error message "ldattach: cannot set line discipline: Invalid
> You also need pps-ldisc loaded; that creates the line discipline that
> you are trying to attach to the port.  The pps-core module only has the
> basic PPS functionality; the code to use it with various devices is in
> separate modules (for example I use pps_parport).

Was wondering about that. For some bizarre reason mandriva and mageia
both have decided not to include the pps-ldisc module in their kernel
compiled modules. 
No idea why


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