361752 2016-04-14 07:06:47 +0000 remove/add default panel manually or dynamically the DE hang 2016-04-15 01:41:03 +0000 1 1 4 Plasma plasmashell Panel 5.6.2 Other Linux RESOLVED DUPLICATE 356225 NOR normal 1.0 0 zhaixiang plasma-bugs-null 0 oldest_to_newest 1588416 0 zhaixiang 2016-04-14 07:06:47 +0000 When removed then added a new default panel, the whole system hang, it is not able to switch tty to kill plasmashell or restart sddm service. qt 5.6.x plasma-framework 5.21.0 plasma-workspace 5.6.2 plugin/plugout display outputs is able to reproduce the same issue, when mirror mode, plugout a output, the primary display's panel disappeared abnormally, wait for a minute, appeared again, then the whole desktop environment hang, not able to switch tty! Reproducible: Always 1588535 1 zhaixiang 2016-04-15 01:41:03 +0000 *** This bug has been marked as a duplicate of bug 356225 ***