Threading error occurs on attempt to add a printer

[scottmmjackson]

This would have been a silent error had I not decided to run the tool from the command line:

No ID match for device lpd://BRN30055C147729/BINARY_P1:
MFG:Brother;MDL:MFC-7860DW;CMD:PJL,PCL,PCLXL;
No ID match for device lpd://BRN30055C147729/BINARY_P1:
MFG:Brother;MDL:MFC-7860DW;CMD:PJL,PCL,PCLXL;
[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
python: ../../src/xcb_io.c:179: dequeue_pending_request: Assertion `!xcb_xlib_unknown_req_in_deq' failed.

It sounds like this is a multithreaded application. Just so you know, X11 isn't really threadsafe unless explicitly told to be so.

[pawamoy]

Same here:

No ID match for device socket://192.168.54.86:
MFG:Xerox;MDL:WorkCentre 3615;CMD:PostScript 3, PCL;DES:Xerox WorkCentre 3615;
No ID match for device socket://192.168.54.86:9100:
MFG:Xerox;MDL:WorkCentre 3615;CMD:PostScript 3, PCL;DES:Xerox WorkCentre 3615;
[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
python: ../../src/xcb_io.c:179: dequeue_pending_request: Assertion `!xcb_xlib_unknown_req_in_deq' failed.