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Running Upgrade on Cubietruck (armv7h) which uses tigervnc in conjunction with jwm
upgraded tigervnc (1.11.0-6 -> 1.12.0-1)
upgraded jwm (2.3.7-3 -> 2.4.0-1)
After vncserver failed to start
Traced problem to jwm 2.4.0.1
and downgrading solved problem
Similar problems reported on x86_64 forum
https://bbs.archlinux.org/viewtopic.php?id=27215