运行scim，提示如下：
Smart Common Input Method 1.4.15
Launching a SCIM daemon with Socket FrontEnd…
Loading simple Config module …
Creating backend …
Loading socket FrontEnd module …
Starting SCIM as daemon …
Launching a SCIM process with x11…
Loading socket Config module …
Creating backend …
Loading x11 FrontEnd module …
No protocol specified
Failed to load x11 FrontEnd module.
SCIM has exited abnormally.