nouveau 0000:01:00.0: fifo: read fault when using fcitx

Submitted by 薛丞宏 @sih4sing5hong5

Assigned to Nouveau Project

Link to original bug (#109363)

Description

Created attachment 143116
dmesg > dmesg.0115

Fcitx UI hangout but XFCE kept working.

OS: Xubuntu 18.04
Nvidia GT 430
Linux 965P-DS4 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Attachment 143116, "dmesg > dmesg.0115":
dmesg.0115