Cannot view etl created by logman with the correct PDB

Hi
I am using logman to create a log session
logman create trace MyStarce -p {driver guid} 0x7FFFFFFF -o
c:\MyLogs\DriverLog.etl

and then
logman start MyStarce
and
logman stopMyStarce

But after I get the etl file (~ 8KB) I cannot view them even when providing
the correct pdb.

Using Traceview I create a log file (etl) by providing the same guid as in
logman.
The etl file created by traceview is much larger (~400 KB) and then opening
the etl in trace view With the pdb (same I tried with log man etl) I am
able to view.

What is the different why doesn’t logman work when trace view works?
Am I missing anything in the command?