R32.3.1 tx2-4g can't install jetson-multimedia-api

sudo apt install nvidia-lt4-jetson-multimedia-api
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package nvidia-lt4-jetson-multimedia-api

Please refer to

Make sure you have


And have executed sudo apt update.


Probably this is typo. It should be nvidia-l4t-jetson-multimedia-api

what is different between yours and mine?


You write “lt4” in your command.

Should Nvidia consider changing their naming conventions to fix this problem, I normally just cut and paste these names so I have no clue where I copied the bad name from. Spell it out instead of abbreviation please.

is it a 1(one) or a l(lower case L), I thought it should be a lower case L, as in long term 4.

I find it very confusing!


Trivia: Pure Ubuntu, once it has drivers added for NVIDIA hardware, is then referred to as “Linux for Tegra”, or "L4T". The abbreviation started getting use a long time ago, and is specific to the Jetsons. It is hardly important, but I suspect that non-Jetson embedded products still have “nvidia” in the name, but perhaps not “l4t”.

Anyway, if you run this exact search, it should show the correct package spelling:
apt search nvidia-l4t-jetson-multimedia-api

If nothing shows up, then it is due to not having the correct apt repository…which is what @DaneLLL mentions in the first reply. Or, it could also be due to using a release which predates use of the apt mechanism. Does the search show a response? If so, then:
sudo apt-get install nvidia-l4t-jetson-multimedia-api
(in the first post “lt4” was used instead of “l4t”, two characters transposed…should be “4t” instead of “t4”)

oops, again I did a copy paste, and missed the point until your Trivia, l4t, linux for Tegra… and lt4 vs l4t…

Thanks linuxdev, appreciate your post!