Pluggable + F17 Multiseat


#1

Setting up Fedora 17 multiseat with Plugable UD160 devices, and getting some disconnects at run time and green screens on boot. I remember somewhere on your site talk about certain F17 releases not working as well as others, but can’t lay a hand on it now… which update subversion would be the most ideal?

Thanks,

Rob


#2

Hi Rob,

Thanks for contacting Plugable Support, I’ll try to help. If you are getting working multi-seat terminals then your Fedora version should be fine. There’s a kernel update to 3.6.2 that disables the UDLFB driver so avoid that, but other wise the green screen is most likely just indicating that something has gone wrong with getting X started.

To restart X press ctrl + alt + backspace on the terminal with the green screen and see if you get a login screen. If not, try unplugging and re-plugging the USB connection to the UD-160.

I hope this helps,
Thanks,
Jerome.


#3

Jerome…

Replugging the connection works… ctrl+alt+backspace on the terminal rarely does.

So, thinking out loud… is there a way to introduce a pause of a second or so during the startup in the loop that is launching the x sessions… would you expect that to have any effect?

I’ve got a quadcore machine with 4 gigs running fedora 17… how many usb devices would you feel secure in connecting to this machine in a K-12 school setting (that is, word processing, web… light stuff for the most part).

Thanks much for your help… I really appreciate it!

Rob


#4

Hi Rob,

Glad to hear that the unplug – replug did the trick. As far as inserting a delay on the spin up of the X servers – It’s definitely possible but is beyond our scope at the moment. It should only be an issue on start up, so hopefully it won’t be too unwieldy in a classroom.

For your classroom scenario, you should be able to get up to 6 terminals with reasonable performance especially if you follow the instructions in this post:
http://plugable.com/2012/06/11/fedora…

You’ll see much better performance and will be able to run even more terminals. If you find that the performance is acceptable and you are bumping into a limit around 6 or 7, have a look at this blog post for a way to get up to 16:
http://plugable.com/2012/09/02/one-fe…

I hope this helps, let me know how it goes.

Thanks,
Jerome.


#5