I got this error when I tried to open on Ubuntu 15.10:

$ electrum
"sni-qt/11012" WARN  09:41:06.933 void StatusNotifierItemFactory::connectToSnw() Invalid interface to SNW_SERVICE
QNativeImage: Unable to attach to shared memory segment.
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
(...too many lines like this...)

Any ideas?