Debian Slug Notes
echo "0" > /proc/sys/vm/swappiness
:Disable 'MARK' messages in /etc/default/syslogd options:
Disable disk integrity checks.
|Save Memory Use
If you are not using IPv6, you can prevent the module from being automatically loaded by adding the line
The same goes for any other kernel module which is automatically loaded which you know you won’t need
lsmod to see what is loaded
apt-get remove NFS (and NetaTalk) - seems they were not present on mine
Using a high definition UVC Webcam with Debian
this link introduced me to the mjpg-streamer and the Quickcam Pro 9000.
I took ages trying to find how to load "Video for Linux" or "V4L2" by "apt-get install"
from - http://openfacts.berlios.de/index-en.phtml?title=HowTo_compile_for_Ubuntu_6.06_LTS
So in the terminal I see -
Slug51local:~# modprobe usbvideo
But still no camera detected - Ahh! new magic word "insmod" needed -
Now when you plug the camera in you see !!!-
Load and run mjpg-streamer - see the pictures in Firefox
svn co https://mjpg-streamer.svn.sourceforge.net/svnroot/mjpg-streamer mjpg-streamer
More preparation work needed!
now copy the contents of the www folder that come with the install to /webcam_www
In /etc/init.d I added a script (with actions at boot up but none at closedown) -
and then, to make this the last script to run, did
The problem I now have is that if I use -
mjpg_streamer -i "input_uvc.so -r 960x720" -o "output_http.so -p 8080 -w /webcam_www"
(either in the startup script above or in the command line of the ttyS0 terminal)
Only if it was a manual command I can then issue a Control-C
So this lets me keep using the ttyS0 terminal -
Note:- to make mjpg-streamer exit cleanly, use -
Run two cameras
Running "Motion" with a UVC Webcam with Debian (tested with Quickcam 5000)
I did apt-get install motion and loaded Motion and all the suggested sub packages
It ran with an old Quickcam 4000 that uses a built in driver that comes with Debian but it
So I went to http://www.lavrsen.dk/twiki/bin/view/Motion/DownloadFiles
Now it runs with the Quickcam 5000 !!
Adding a WIFI dongle
From eBay I bought a
Here is my backup copy of those instructions (in case the link dies) with my own mods (with many thanks)
3) Compile the driver:
4) Copy the resulting rt73.ko module to an appropriate place under /lib:
5) Copy the rt73.bin firmware to /lib/firmware:
6) Update module dependencies:
Before losing the working Ethernet connection you must get some tools "iwconfig", "iwlist", etc.
7) Edit the /etc/network/interfaces file according to the configuration of the wireless network.
Slug51local:~# iwlist wlan0 scan
now try to connect - - -
iwconfig wlan0 essid any
Slug51local:~# ping 192.168.0.50
also see this
Adding a USB to rs232 converter serial port
Slug51local:~# usb 1-2: new full speed USB device using ohci_hcd and address 5
So from the ttyS0 serial port or a ssh terminal you can write -
echo "hello slug">/dev/ttyUSB0
and see the output on the USB/rs232 converter output.
Slug51local:~# stty -F /dev/ttyUSB0 115200
Confirm the setting -
Slug51local:~# stty -F /dev/ttyUSB0
For linking to an external device you need "raw" mode such that each character sent is immediately handled.
Two GPIO lines for external equipment control?
Control two of the Slug LEDs - 1 for on, 0 for off - D9=disk2 - D10=disk1
echo 1 > /sys/class/leds/disk-1/brightness
echo 0 > /sys/class/leds/disk-1/brightness
echo 1 > /sys/class/leds/disk-2/brightness
echo 0 > /sys/class/leds/disk-2/brightness
Panic - My Debian Slug stopped booting at "Setting the system clock"
Fix - I removed the lithium battery cell for a few minutes - then when I typed "date" I saw the correct date and time - so it had restarted and reset OK.