[Bug 1893300] [NEW] The status of cups still shows idle when the printer has been unplugged

[Launchpad Bug Tracker]

You have been subscribed to a public bug by hugh chao (hugh712):

[ Impact ]
After printers (non-ippusb protocal) have been disconnected, the status of cups still shows "idle" instead of "disabled", so seems the disconnected procedure hasn't worked well.

[ Test Case ]
1. Connect the printer (non-ippusb protocal)(which isn't 070104) with any 20.04 machine
2. Wait for the status of cups became "Idle" (lpstat -p)
3. Unplug the cable of the printer
4. Check the status of cups again. (lpstat -p)

[ Regression potential ]
Low, the change just makes "strcmp" to "srtsrt" and has more checks on the existing of device path. 

[Expected result]
The status should show disabled.

[Actual result]
The status shows idle.

[info]
Target:
HP LaserJet Pro203dw
HP Officejet 100 Mobile Printer
HP Officeject 200 Mobile Printer
Brother HL-2250DN
Samsung ML-331x

Upstream Bug: https://github.com/OpenPrinting/system-config-
printer/issues/182

PPA: https://launchpad.net/~hugh712/+archive/ubuntu/sru-1893300

** Affects: oem-priority
     Importance: Critical
     Assignee: hugh chao (hugh712)
         Status: In Progress

** Affects: oem-priority/focal
     Importance: Undecided
         Status: New

** Affects: system-config-printer (Ubuntu)
     Importance: High
     Assignee: Till Kamppeter (till-kamppeter)
         Status: New


** Tags: laramie oem-priority originate-from-1892987 verification-needed
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The status of cups still shows idle when the printer has been unplugged
https://bugs.launchpad.net/bugs/1893300
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