#7 Not recovering altitude from Holux M1000-C

[NeoM]

It's been more than a year than I'm using a gps receiver under linux. At the beginning, I was recovering position and altitude (ele) but it's been months that I miss altitude. I can still recover from SRTM with gpsprune but would be better to have the one from gps.
I'm using the following commands:

* to retrieve data:
mtkbabel -p $gpsport -s 115200 -l off -f $n -w -t -x -i 2>&1 | tee -a $gpslog
* to erase gps
alias gpserase='mtkbabel -p /dev/ttyACM0 -E -r 120:30:0 -o UTC,VALID,LATITUDE,LONGITUDE,HEIGHT,SPEED,HEADING,ELEVATION,DISTANCE'
alias gpserase2='mtkbabel -p /dev/ttyACM0 -E -r 900:150:30 -o UTC,VALID,LATITUDE,LONGITUDE,HEIGHT,SPEED,HEADING,ELEVATION,DISTANCE'

I believe that when my gpserase has no options, I was getting the altitude but now, doing mtkbabel erase without options doesn't reset it. And No windows box currently to do it with Holux ezTour (not working with wine)
I checked my gpx history to see which ones has elevation not null and I got some in august, nov 2011, next mai 2012.

Eventually as I save both bin/gpx, I can check if altitude/ele is not badly extracted.

Test currently on lubuntu 12.04 with mtkbabel 0.8.3.1-1