December 04, 2020, 12:00:52 pm

News:

Have you visited the Allwinner Chipset wiki? - http://linux-sunxi.org/


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Topics - olouv

1
Hey!

I'm looking to build a working 14.04-ubuntu server starting from a core install, then adding VLC (gpu-accelerated via cedar or vdpau) and MALI drivers (for chromium gpu-accelerated).

So far, I've successfully built and booted on a 14.04 Ubuntu Core image using:

- u-boot-sunxi-with-spl-cb2-20130111.bin

and

- ubuntu-core-14.04-core-armhf.tar.gz

It worked out of the box thanks to this tutorial :


The OS looks stable and quite fast, should I worry about specific things with this setup ?

For now, I'm looking for help to correctly setup the cedar_dev module/device to make the board play HD videos with GPU acceleration with the smallest payload. I've already built VLC with cedarX support successfully in the past, would like to try the open-source version that uses vdpau (would not require a custom VLC build if I understand correctly).

So far I'm having no modules, I guess it's because I need a patched kernel (patwood's?) ? (quite a *nix noob, sorry). Or can it be done in userland with https://github.com/linux-sunxi/cedarx-libs ?

Tried to replace the uImage with the one from patwood's A20-kernel-3.4.79.tar.gz but I did not see a change. Would really like to have a link to a tutorial on this, so far I haven't found that.


Thanks!
2
I get an error "mmc0 host does not support card's voltages" on boot when using this image:
http://dl.cubieboard.org/software/a20-cubieboard/lubuntu/cb-a20-lubuntu-12.10-v1.06/cb2-lubuntu-server-20131026/

Nothing in /dev after boot.

The card is working just fine on any other device. Any idea?
3
I'm trying to get hardware-accelerated VLC built & working on a clean nand server image.

I'm using this image:
http://dl.cubieboard.org/software/a20-cubieboard/lubuntu/cb-a20-lubuntu-12.10-v1.06/cb2-lubuntu-server-20131026/

Followed this tutorial (http://linux-sunxi.org/VLC) and successfully built VLC,

My issue is that I don't have a `/dev/cedar_dev`(or anything that looks like it).

Any idea?