DisplayLink Releases First USB 3.0 Driver, But Doesn't Appear Fully Open

[phoronix]

Phoronix: DisplayLink Releases First USB 3.0 Driver, But Doesn't Appear Fully Open

A few days after writing about a Linux driver coming for DisplayLink's USB 3.0-based hardware, they've released a binary driver for Ubuntu...

http://www.phoronix.com/scan.php?page=news_item&px=DisplayLink-USB-3.0-Driver

[Ardje]

I've checked it, and it is completely open. http://support.displaylink.com/knowl...rticles/679060 has one flaw and that is if you omit the target directory (--target extractdir), it actually won't do anything.
The kernel driver is at: https://github.com/DisplayLink/evdi and
Oh wait...
Sheez...
ard@odroid3:~/tmp/poep/test$ ldd x86/DisplayLinkManager
not a dynamic executable
ard@odroid3:~/tmp/poep/test$ ldd x64/DisplayLinkManager
not a dynamic executable
Forget it... Don't buy them. They won't work. It's a joke, just like openmax.

[imirkin]

The kernel driver is at: https://github.com/DisplayLink/evdi

Hah, looks like uinput/fuse/etc but for drm. All the logic for interacting with the device is in their closed blob library, the "evdi" thing is just an ioctl passthrough.

[StefanBruens]

Hah, looks like uinput/fuse/etc but for drm. All the logic for interacting with the device is in their closed blob library, the "evdi" thing is just an ioctl passthrough.

Actually, it's worse.

The drm node (/dev/dri/card<num>) also acts as communication port to the proprieatary DisplayLinkManager, using driver specific ioctls. Think of reusing /dev/input/event<num> for pushing uinput data.