From 5c8eb1acf228d3ad17e56dbbfa83590044908ca9 Mon Sep 17 00:00:00 2001
From: JessePomeroy <7268296+JessePomeroy@users.noreply.github.com>
Date: Thu, 12 Nov 2026 22:20:43 -0500
Subject: [PATCH] Add unidir USB quirk for Canon Pro9000 Mark II

After a job sent with bidirectional I/O the printer accepts no further job
until it is power-cycled: the backend stays at "Sending data to printer" and
transfers nothing. With unidirectional I/O consecutive jobs print. Other
Canon entries, among them the PIXMA iP4200, iP4300 and iP6000D, already use
the same quirk.
---
 backend/org.cups.usb-quirks | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/backend/org.cups.usb-quirks b/backend/org.cups.usb-quirks
index bb96870aa7..bc73e6c5f1 100644
--- a/backend/org.cups.usb-quirks
+++ b/backend/org.cups.usb-quirks
@@ -84,6 +84,9 @@
 # Canon, Inc. PIXMA iP4300 Printer (https://bugs.launchpad.net/bugs/1032385)
 0x04a9 0x10b6 unidir
 
+# Canon, Inc. PIXMA Pro9000 Mark II Printer (accepts no further job after a bidirectional one)
+0x04a9 0x10cf unidir
+
 # Canon, Inc. MP210 (https://bugzilla.redhat.com/show_bug.cgi?id=847923#c53)
 0x04a9 0x1721 unidir