Ubuntu Sverige

Why are you trying to use xrandr? nvidia's drivers don't support anything past xrandr1.1. You should use nvidia-settings instead (it can be run as command-line), or the helper apps disper and auto-disper.

4. Commandline Interface
nvidia-settings has a rich commandline interface: all attributes that
can be manipulated with the GUI can also be queried and set from the
command line. The commandline syntax for querying and assigning
attributes matches that of the .nvidia-settings-rc configuration file.

The --query option can be used to query the current value of
attributes. This will also report the valid values for the attribute.
You can run nvidia-settings --query all for a complete list of
available attributes, what the current value is, what values are valid
for the attribute, and through which target types (e.g., X screens,
GPUs) the attributes can be addressed. Additionally, individual
attributes may be specified like this:

nvidia-settings --query CursorShadow

Attributes that may differ per display device (for example,
DigitalVibrance can be set independently on each display device when in
TwinView) can be appended with a "display device name" within brackets;
e.g.:

nvidia-settings --query DigitalVibrance[CRT-0]

If an attribute is display device specific, but the query does not
specify a display device, then the attribute value for all display
devices will be queried.

An attribute name may be prepended with an X Display name and a forward
slash to indicate a different X Display; e.g.:

nvidia-settings --query localhost:0.0/DigitalVibrance[DFP-1]

An attribute name may also just be prepended with the screen number and
a forward slash:

nvidia-settings --query 0/DigitalVibrance[DFP-1]

in which case the default X Display will be used, but you can indicate
to which X screen to direct the query (if your X server has multiple X
screens). If no X screen is specified, then the attribute value will
be queried for all X screens.

Attributes can be addressed through "target types". A target type
indicates the object that is queried when you query an attribute. The
default target type is an X screen, but other possible target types are
GPUs, Frame Lock devices, Visual Computing Systems, SDI Input Devices,
and fans.

Target types give you different granularities with which to perform
queries and assignments. Since X screens can span multiple GPUs (in
the case of Xinerama, or SLI), and multiple X screens can exist on the
same GPU, it is sometimes useful to address attributes by GPU rather
than X screen.

A target specification is contained within brackets and consists of a
target type name, a colon, and the target id. The target type name can
be one of screen, gpu, framelock, vcs, gvi, or fan; the target id is
the index into the list of targets (for that target type). Target
specifications can be used wherever an X screen is used in query and
assignment commands; the target specification can be used either by
itself on the left side of the forward slash, or as part of an X
Display name.

For example, the following queries address X screen 0 on the localhost:

nvidia-settings --query 0/VideoRam
nvidia-settings --query localhost:0.0/VideoRam
nvidia-settings --query [screen:0]/VideoRam
nvidia-settings --query localhost:0[screen:0]/VideoRam

To address GPU 0 instead, you can use either of:

nvidia-settings --query [gpu:0]/VideoRam
nvidia-settings --query localhost:0[gpu:0]/VideoRam

See the output of

nvidia-settings --query all

for what targets types can be used with each attribute. See the output
of

nvidia-settings --query screens --query gpus --query framelocks --query vcs --query gvis --query fans

for lists of targets for each target type.

The --assign option can be used to assign a new value to an attribute.
The valid values for an attribute are reported when the attribute is
queried. The syntax for --assign is the same as --query, with the
additional requirement that assignments also have an equal sign and the
new value. For example:

nvidia-settings --assign FSAA=2
nvidia-settings --assign 0/DigitalVibrance[CRT-1]=9
nvidia-settings --assign [gpu:0]/DigitalVibrance=0

Multiple queries and assignments may be specified on the commandline
for a single invocation of nvidia-settings.

If either the --query or --assign options are passed to
nvidia-settings, the GUI will not be presented, and nvidia-settings
will exit after processing the assignments and/or queries.

min fråga är nu om man skulle kunna fixa ett script för tv:n ansluten och ett script när tv:n inte är ansluten.

alltså lite snabbare till/frånkoppling.

nvidia-settings --query screens

Disper is an on-the-fly display switch utility. It is intended to be used just before giving a presentation with a laptop, when all one wants is that the beamer, which has just been connected, is able to show whatever you prepared.

Auto-detect the connect display hardware and load the appropiate X11 setup using xrandr or disper — Read more