Ubuntu
cups package

Stuck at "Add Printer" (in CUPS web interface) on Ubuntu 20.04

Bug #1899588 reported by Hai NGUYEN VAN on 2020-10-13

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	cups (Ubuntu)	New	Undecided	Unassigned

Bug Description

I have a freshly installed Ubuntu 20.04.1 on my Lenovo ThinkPad X1 (8th gen). Whenever I go to http://localhost:631. I click on "Add Printer" and the status bar indicates that the page is loading. Nothing else happens. I'm stuck.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cups 2.3.1-9ubuntu1.1
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CupsErrorLog: Error: [Errno 13] Permission denied: '/var/log/cups/error_log'
CurrentDesktop: Unity
Date: Tue Oct 13 10:01:26 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2020-08-24 (49 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: No destinations added.
MachineType: LENOVO 20U9004PFR
Papersize: a4
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=UUID=4a93b148-f388-4849-9a18-9e0e4d32c97a ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/25/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2WET22W (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20U9004PFR
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN2WET22W(1.12):bd08/25/2020:svnLENOVO:pn20U9004PFR:pvrThinkPadX1CarbonGen8:rvnLENOVO:rn20U9004PFR:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon Gen 8
dmi.product.name: 20U9004PFR
dmi.product.sku: LENOVO_MT_20U9_BU_Think_FM_ThinkPad X1 Carbon Gen 8
dmi.product.version: ThinkPad X1 Carbon Gen 8
dmi.sys.vendor: LENOVO

Tags:

Revision history for this message

Hai NGUYEN VAN (psaxl) wrote on 2020-10-13:

CurrentDmesg.txt Edit (170.8 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (7.1 KiB, text/plain; charset="utf-8")
KernLog.txt Edit (55.5 KiB, text/plain; charset="utf-8")
Locale.txt Edit (309 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (16.7 KiB, text/plain; charset="utf-8")
Lspci-vt.txt Edit (1.5 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (618 bytes, text/plain; charset="utf-8")
Lsusb-t.txt Edit (962 bytes, text/plain; charset="utf-8")
Lsusb-v.txt Edit (55.7 KiB, text/plain; charset="utf-8")
PrintingPackages.txt Edit (1.1 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (10.3 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.3 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (310 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (7.8 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (9.8 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (252.4 KiB, text/plain; charset="utf-8")
acpidump.txt Edit (583 bytes, text/plain; charset="utf-8")

Revision history for this message

Hai NGUYEN VAN (psaxl) wrote on 2020-10-13:

Not a solution, but at least a short-term solution.

I edited /etc/cups/cupsd.conf and commented out the following lines:
AuthType Default
Require user @SYSTEM

And it worked!

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