/usr/bin/proptest: invalid option -- '-'
/usr/bin/proptest: invalid option -- 'h'
/usr/bin/proptest: invalid option -- 'e'
/usr/bin/proptest: invalid option -- 'l'
/usr/bin/proptest: invalid option -- 'p'
drmGetDevices2() failed with Unknown error -2
Usage:
  /usr/bin/proptest [options]
  /usr/bin/proptest [options] [obj id] [obj type] [prop id] [value]

options:
  -D DEVICE  use the given device
  -M MODULE  use the given driver

The first form just prints all the existing properties. The second one is
used to set the value of a specified property. The object type can be one of
the following strings:
  connector crtc

Example:
  proptest 7 connector 2 1
will set property 2 of connector 7 to 1
Usage:
  /usr/bin/proptest [options]
  /usr/bin/proptest [options] [obj id] [obj type] [prop id] [value]

options:
  -D DEVICE  use the given device
  -M MODULE  use the given driver

The first form just prints all the existing properties. The second one is
used to set the value of a specified property. The object type can be one of
the following strings:
  connector crtc

Example:
  proptest 7 connector 2 1
will set property 2 of connector 7 to 1
Usage:
  /usr/bin/proptest [options]
  /usr/bin/proptest [options] [obj id] [obj type] [prop id] [value]

options:
  -D DEVICE  use the given device
  -M MODULE  use the given driver

The first form just prints all the existing properties. The second one is
used to set the value of a specified property. The object type can be one of
the following strings:
  connector crtc

Example:
  proptest 7 connector 2 1
will set property 2 of connector 7 to 1
Usage:
  /usr/bin/proptest [options]
  /usr/bin/proptest [options] [obj id] [obj type] [prop id] [value]

options:
  -D DEVICE  use the given device
  -M MODULE  use the given driver

The first form just prints all the existing properties. The second one is
used to set the value of a specified property. The object type can be one of
the following strings:
  connector crtc

Example:
  proptest 7 connector 2 1
will set property 2 of connector 7 to 1
Usage:
  /usr/bin/proptest [options]
  /usr/bin/proptest [options] [obj id] [obj type] [prop id] [value]

options:
  -D DEVICE  use the given device
  -M MODULE  use the given driver

The first form just prints all the existing properties. The second one is
used to set the value of a specified property. The object type can be one of
the following strings:
  connector crtc

Example:
  proptest 7 connector 2 1
will set property 2 of connector 7 to 1