Xnp2 display messed up with Archlinux and Xorg 1.16.1

[ghost]

Environment: Archlinux+Xorg 1.16.1+Gtk 2.24 , Xnp2 20140607 and GIT version both tried

compilation flag: ./configure --enable-build-all --enable-debug

Compilation successful. However, when running it, display is messed up.

Graphic card: HD4600 w Mesa 10.3 and Nvidia GT750M w 340.32 (using bumblebee switch, both card does not work)

Screenshot:

PS

strace repeatedly gives me:

recvmsg(3, 0x7fff5fef6570, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}], 2, 0) = 0 (Timeout)
recvmsg(3, 0x7fff5fef6550, 0) = -1 EAGAIN (Resource temporarily unavailable)
nanosleep({0, 1000000}, NULL) = 0
recvmsg(3, 0x7fff5fef6570, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}], 2, 0) = 0 (Timeout)
recvmsg(3, 0x7fff5fef6550, 0) = -1 EAGAIN (Resource temporarily unavailable)
nanosleep({0, 1000000}, NULL) = 0
recvmsg(3, 0x7fff5fef6570, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}], 2, 0) = 0 (Timeout)
recvmsg(3, 0x7fff5fef6550, 0) = -1 EAGAIN (Resource temporarily unavailable)

....