You need a device node for a miscellaneous character device to access the monitor DCSS.
About this task
Your distribution might create this device node for you (for example, by using udev).
Procedure
Perform these steps:
- To find out whether there is already a device node, issue this command:
# find /dev -name monreader
- If there is no device node, you must create one. To find out the major and minor number
for your monitor device, read the dev attribute of the device representation in
sysfs:
# cat /sys/class/misc/monreader/dev
The value of the dev attribute is of the form
<major>:<minor>.
- To create a device node, issue a command of the form:
# mknod <node> c <major> <minor>
where
<node> is your device node.
Example
To create a device node
/dev/monreader:
# cat /sys/class/misc/monreader/dev
10:63
# mknod /dev/monreader c 10 63
In the
example, the major number was 10 and the minor 63.