Midi controller keeps disconnecting

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http://linux-audio.4202.n7.nabble.com – Hi all, I recently bought this midi controller: http://www.musicstore.de/en_EN/GBP/Fame-Tweak-49-Controller-Masterkeyboa... seems to be this Chinese thing: http://www.worlde.com.cn/products_detail/&productId=1496ebdb-c1c5-401b-b... was hoping midi is standardized enough that it just works in Linux, it doesn't ... But I'd rather keep it, 'cause i don't find anything comparable suiting my needs for this price. Now here's the problem: It basically gets recognized all the way down to alsa $aconnect -l (HowTos)