Why do certain notes not play using my  laptop keyboard?

In Logic 9, I have notes that have quit working using my Akai LPK 25 laptop keyboard. I think one quit when I was in clicks and ports trying to figure this out. This keyboard is plugged in directly via USB port. I have a Casio keyboard that I use using a Lambda interface that works fine; only in that case I hear them through the interface. The Logic Caps keyboard works fine. From July till now, it all worked great. I think the first note may have quit playing when I was exploring the Logic arpeggiator. I can see that the signal for the note is being received, but the indicator shows the note with a line through it, as it does with other notes after the key is released.

Eriksimon told you a fact that is little known and often causes confusion. Here is a diagram that demonstrates the concept with the MIDI signal flow.
The Controller Assignment ➊ is placed right there at the Physical Input (if you are familiar with the Environment). Any MIDI Event that you assign in the Controller Assignment window will be intercepted and "eliminated" from further traveling to your MIDI devices, objects or the Tracks.
Hope that helps
Edgar Rothermich
http://DingDingMusic.com/Manuals/
'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

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                                 Atom avcC @ 100945010 of size: 50, ends @ 100945060
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                 Atom mdhd @ 102233268 of size: 32, ends @ 102233300
                 Atom hdlr @ 102233300 of size: 33, ends @ 102233333
                 Atom minf @ 102233333 of size: 317755, ends @ 102551088
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                         Atom dref @ 102233365 of size: 28, ends @ 102233393
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         Atom udta @ 102551110 of size: 111, ends @ 102551221
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         133.84 kbp/s  2116.640 sec  MPEG-4 AAC Low Complexity Profile    channels: [2]

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    There is an index on to_char(starttime, 'YYYY-MM-DD HH24')
    There is a vew definition ACT_TOTALS_HOURLY2 which includes
    select to_char(starttime, 'YYYY-MM-DD HH24') STARTTIMSE
    from ACT_TOTALS
    group by to_char(starttime, 'YYYY-MM'DD HH24'), TRANSTYPE
    I have run a query
    select starttime from ACT_TOTALS_HOURLY2
    where starttime <= to_char(sysdate, 'YYYY-MM-DD HH24');
    The table access comes out as full despite there being > 2 million rows in the table.
    The predicate looks like
    TO_CHAR(INTERNAL_FUNCTION(''STARTTIME''), 'YYYY-MM-DD HH24')<= ..........
    I thinkg the INTERNAL_FUNCTION is an implicit cast from DATE to TIMESTAMP.
    Can anyone please throw any light on why the index on the table wouldn't be used in this case?
    Thanks in advance for any help.

    Can you supply a test case for that?
    This is what I have done to engeneer your case
    drop table t1;
    create table t1 (n1 number, d1 date, STARTTIME TIMESTAMP(6));
    insert into t1(n1,d1, starttime)  select rownum, trunc(sysdate) + rownum, sysdate
    from dual connect by level <= 2e6;
    create or replace view t1_v as select n1, d1, to_char(starttime, 'YYYY-MM-DD HH24') starttimse
    from t1;
    SQL> explain plan for
      2  select starttimse from t1_v
      3  where starttimse <= to_char(sysdate, 'YYYY-MM-DD HH24');
    Explained.
    SQL> select * from table(dbms_xplan.display);
    Plan hash value: 838529891
    | Id  | Operation         | Name | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT  |      |   109K|  1394K|  2004  (14)| 00:00:12 |
    |*  1 |  TABLE ACCESS FULL| T1   |   109K|  1394K|  2004  (14)| 00:00:12 |
    Predicate Information (identified by operation id):
       1 - filter(TO_CHAR(INTERNAL_FUNCTION("STARTTIME"),'YYYY-MM-DD
                  HH24')<=TO_CHAR(SYSDATE@!,'YYYY-MM-DD HH24'))
    Note
       - dynamic sampling used for this statement
    SQL> create index t1_ind on t1 (to_char(starttime, 'YYYY-MM-DD HH24'));
    Index created.
    SQL> explain plan for
      2  select starttimse from t1_v
      3  where starttimse <= to_char(sysdate, 'YYYY-MM-DD HH24');
    Explained.
    SQL> select * from table(dbms_xplan.display);
    Plan hash value: 3884685049
    | Id  | Operation        | Name   | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT |        |   109K|  1394K|    68   (2)| 00:00:01 |
    |*  1 |  INDEX RANGE SCAN| T1_IND |   109K|  1394K|    68   (2)| 00:00:01 |
    Predicate Information (identified by operation id):
       1 - access(TO_CHAR(INTERNAL_FUNCTION("STARTTIME"),'YYYY-MM-DD
                  HH24')<=TO_CHAR(SYSDATE@!,'YYYY-MM-DD HH24'))
    Note
       - dynamic sampling used for this statement
    The above selects are done against the view t1_v.
    While the following one is done against the table t1
    SQL> set autotrace traceonly explain
    SQL> select starttime from t1
      2  where starttime <= to_char(sysdate, 'YYYY-MM-DD HH24');
    Execution Plan
    Plan hash value: 838529891
    | Id  | Operation         | Name | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT  |      | 29875 |   379K|  1790   (4)| 00:00:11 |
    |*  1 |  TABLE ACCESS FULL| T1   | 29875 |   379K|  1790   (4)| 00:00:11 |
    Predicate Information (identified by operation id):
       1 - filter("STARTTIME"<=TO_TIMESTAMP(TO_CHAR(SYSDATE@!,'YYYY-MM-DD
                  HH24')))
    If you can post a clear test case of your issue may be one of us can help you
    Best regards
    Mohamed Houri
    www.hourim.wordpress.com

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