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Message #110159
[Bug 1438456] Re: hp-setup creates spurious cupsd process
To the HPLIP developers at HP: Please have a look into this. Please let
hp-setup not start CUPS, especially not unconditionally or directly. The
distributions usually start CUPS on boot. If you want to make sure
whether CUPS is running when hp-setup is started, check through the
startup manager of the distro (the process #1, either System V Init in
older distros, Upstart in all recently released Ubuntu, or systemd in
all newer distributions including Ubuntu 15.04 and newer) whether CUPS
is running and only if it is not running, start it through the startup
manager.
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https://bugs.launchpad.net/bugs/1438456
Title:
hp-setup creates spurious cupsd process
Status in HP Linux Imaging and Printing:
New
Status in hplip package in Ubuntu:
New
Bug description:
This is on a fully up-to-date Ubuntu 14.04 machine. Running hp-setup
to connect a networked printer creates a spurious cupsd process, so
that the system ends up with two cupsd processes running:
Before running hp-setup:
gpothier@zb-ale:~$ ps aux |grep cupsd
root 1982 0.0 0.1 77144 4256 ? Ss 19:37 0:00 /usr/sbin/cupsd -f
gpothier 1996 0.0 0.0 22016 940 pts/1 S+ 19:49 0:00 grep --color=auto cupsd
After running hp-setup:
gpothier@zb-ale:~$ ps aux |grep cupsd
root 2037 0.3 0.0 90252 3848 ? Ss 19:50 0:00 /usr/sbin/cupsd -C /etc/cups/cupsd.conf
root 2038 5.3 0.1 78264 5380 ? Ss 19:50 0:00 /usr/sbin/cupsd -f
gpothier 2052 0.0 0.0 22016 936 pts/1 S+ 19:50 0:00 grep --color=auto cupsd
This causes a race condition between the two processes to save the
cups configuration when they are killed. In particular, this causes
the printer added by hp-setup to disappear after reboot, if no
additional steps are taken.
Here is a full transcript (with a few CR/LF added for clarity):
gpothier@zb-ale:~$ ps aux |grep cupsd
root 1982 0.0 0.1 77144 4256 ? Ss 19:37 0:00 /usr/sbin/cupsd -f
gpothier 1996 0.0 0.0 22016 940 pts/1 S+ 19:49 0:00 grep --color=auto cupsd
gpothier@zb-ale:~$ lpstat -v
dispositivo para Brother-HL-2270DW: ipp://cali00.local:631/printers/Brother_HL-2270DW
dispositivo para EpsonT1110: ipp://192.168.0.12:631/printers/EpsonT1110
dispositivo para HP-CM1415fmw: ipps://cali-sys.local:631/printers/HP_CM1415fmw
dispositivo para HP-LaserJet-Professional-P1102w: ipp://192.168.0.12:631/printers/HP-LaserJet-Professional-P1102w
dispositivo para Zebra-GK420t: ipp://192.168.0.12:631/printers/Zebra-GK420t
gpothier@zb-ale:~$ sudo hp-setup -i
HP Linux Imaging and Printing System (ver. 3.14.3)
Printer/Fax Setup Utility ver. 9.0
Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
(Note: Defaults for each question are maked with a '*'. Press <enter>
to accept the default.)
--------------------------------
| SELECT CONNECTION (I/O) TYPE |
--------------------------------
Num Connection Description
Type
-------- ---------- ----------------------------------------------------------
0* usb Universal Serial Bus (USB)
1 net Network/Ethernet/Wireless (direct connection or JetDirect)
2 par Parallel Port (LPT:)
Enter number 0...2 for connection type (q=quit, enter=usb*) ? 1
Using connection type: net
Using device: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
Setting up device: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
---------------------
| PRINT QUEUE SETUP |
---------------------
Please enter a name for this print queue (m=use model name:'HP_Officejet_Pro_X476dw_MFP'*, q=quit) ?
Using queue name: HP_Officejet_Pro_X476dw_MFP
Locating PPD file... Please wait.
Found PPD file: postscript-hp:1/ppd/hplip/HP/hp-officejet_pro_476_576_series-ps.ppd
Description:
Note: The model number may vary slightly from the actual model number
on the device.
Does this PPD file appear to be the correct one (y=yes*, n=no, q=quit) ?
Enter a location description for this printer (q=quit) ?
Enter additonal information or notes for this printer (q=quit) ?
Adding print queue to CUPS:
Device URI: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
Queue name: HP_Officejet_Pro_X476dw_MFP
PPD file: postscript-hp:1/ppd/hplip/HP/hp-officejet_pro_476_576_series-ps.ppd
Location:
Information:
-------------------
| FAX QUEUE SETUP |
-------------------
Please enter a name for this fax queue (m=use model name:'HP_Officejet_Pro_X476dw_MFP_fax'*, q=quit) ?q
OK, done.
gpothier@zb-ale:~$ lpstat -v
dispositivo para Brother-HL-2270DW: ipp://cali00.local:631/printers/Brother_HL-2270DW
dispositivo para EpsonT1110: ipp://192.168.0.12:631/printers/EpsonT1110
dispositivo para HP-CM1415fmw: ipps://cali-sys.local:631/printers/HP_CM1415fmw
dispositivo para HP-LaserJet-Professional-P1102w: ipp://192.168.0.12:631/printers/HP-LaserJet-Professional-P1102w
dispositivo para HP_Officejet_Pro_X476dw_MFP: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
dispositivo para Zebra-GK420t: ipp://192.168.0.12:631/printers/Zebra-GK420t
gpothier@zb-ale:~$ ps aux |grep cupsd
root 2037 0.3 0.0 90252 3848 ? Ss 19:50 0:00 /usr/sbin/cupsd -C /etc/cups/cupsd.conf
root 2038 5.3 0.1 78264 5380 ? Ss 19:50 0:00 /usr/sbin/cupsd -f
gpothier 2052 0.0 0.0 22016 936 pts/1 S+ 19:50 0:00 grep --color=auto cupsd
gpothier@zb-ale:~$ sudo service cups stop
cups stop/waiting
gpothier@zb-ale:~$ ps aux |grep cupsd
root 2037 0.1 0.0 90252 3848 ? Ss 19:50 0:00 /usr/sbin/cupsd -C /etc/cups/cupsd.conf
gpothier 2065 0.0 0.0 22016 940 pts/1 S+ 19:50 0:00 grep --color=auto cupsd
gpothier@zb-ale:~$ sudo killall cupsd
gpothier@zb-ale:~$ ps aux |grep cupsd
gpothier 2069 0.0 0.0 22016 936 pts/1 S+ 19:50 0:00 grep --color=auto cupsd
gpothier@zb-ale:~$ sudo service cups start
cups start/running, process 2084
gpothier@zb-ale:~$ lpstat -v
dispositivo para Brother-HL-2270DW: ipp://cali00.local:631/printers/Brother_HL-2270DW
dispositivo para EpsonT1110: ipp://192.168.0.12:631/printers/EpsonT1110
dispositivo para HP-CM1415fmw: ipps://cali-sys.local:631/printers/HP_CM1415fmw
dispositivo para HP-LaserJet-Professional-P1102w: ipp://192.168.0.12:631/printers/HP-LaserJet-Professional-P1102w
dispositivo para Zebra-GK420t: ipp://192.168.0.12:631/printers/Zebra-GK420t
gpothier@zb-ale:~$ sudo hp-setup -i
HP Linux Imaging and Printing System (ver. 3.14.3)
Printer/Fax Setup Utility ver. 9.0
Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
(Note: Defaults for each question are maked with a '*'. Press <enter>
to accept the default.)
--------------------------------
| SELECT CONNECTION (I/O) TYPE |
--------------------------------
Num Connection Description
Type
-------- ---------- ----------------------------------------------------------
0* usb Universal Serial Bus (USB)
1 net Network/Ethernet/Wireless (direct connection or JetDirect)
2 par Parallel Port (LPT:)
Enter number 0...2 for connection type (q=quit, enter=usb*) ? 1
Using connection type: net
Using device: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
Setting up device: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
---------------------
| PRINT QUEUE SETUP |
---------------------
Please enter a name for this print queue (m=use model name:'HP_Officejet_Pro_X476dw_MFP'*, q=quit) ?
Using queue name: HP_Officejet_Pro_X476dw_MFP
Locating PPD file... Please wait.
Found PPD file: postscript-hp:1/ppd/hplip/HP/hp-officejet_pro_476_576_series-ps.ppd
Description:
Note: The model number may vary slightly from the actual model number
on the device.
Does this PPD file appear to be the correct one (y=yes*, n=no, q=quit) ?
Enter a location description for this printer (q=quit) ?
Enter additonal information or notes for this printer (q=quit) ?
Adding print queue to CUPS:
Device URI: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
Queue name: HP_Officejet_Pro_X476dw_MFP
PPD file: postscript-hp:1/ppd/hplip/HP/hp-officejet_pro_476_576_series-ps.ppd
Location:
Information:
-------------------
| FAX QUEUE SETUP |
-------------------
Please enter a name for this fax queue (m=use model name:'HP_Officejet_Pro_X476dw_MFP_fax'*, q=quit) ?q
OK, done.
gpothier@zb-ale:~$ ps aux |grep cupsd
root 2127 0.3 0.0 90252 3844 ? Ss 19:51 0:00 /usr/sbin/cupsd -C /etc/cups/cupsd.conf
root 2128 5.3 0.1 78264 5384 ? Ss 19:51 0:00 /usr/sbin/cupsd -f
gpothier 2141 0.0 0.0 22016 940 pts/1 S+ 19:52 0:00 grep --color=auto cupsd
gpothier@zb-ale:~$ sudo kill 2127
gpothier@zb-ale:~$ lpstat -v
lpstat: Descriptor de archivo erróneo
gpothier@zb-ale:~$ ps aux |grep cupsd
root 2128 0.7 0.1 78264 5384 ? Ss 19:51 0:00 /usr/sbin/cupsd -f
gpothier 2147 0.0 0.0 22016 936 pts/1 S+ 19:53 0:00 grep --color=auto cupsd
gpothier@zb-ale:~$ sudo service cups restart
cups stop/waiting
cups start/running, process 2183
gpothier@zb-ale:~$ lpstat -v
dispositivo para Brother-HL-2270DW: ipp://cali00.local:631/printers/Brother_HL-2270DW
dispositivo para EpsonT1110: ipp://192.168.0.12:631/printers/EpsonT1110
dispositivo para HP-CM1415fmw: ipps://cali-sys.local:631/printers/HP_CM1415fmw
dispositivo para HP-LaserJet-Professional-P1102w: ipp://192.168.0.12:631/printers/HP-LaserJet-Professional-P1102w
dispositivo para HP_Officejet_Pro_X476dw_MFP: hp:/net/HP_Officejet_Pro_X476dw_MFP?ip=192.168.0.108
dispositivo para Zebra-GK420t: ipp://192.168.0.12:631/printers/Zebra-GK420t
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: hplip 3.14.3-0ubuntu3.2
ProcVersionSignature: Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16
Uname: Linux 3.13.0-48-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
Date: Mon Mar 30 19:56:57 2015
InstallationDate: Installed on 2013-11-28 (487 days ago)
InstallationMedia: Ubuntu-GNOME 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: ZOTAC ZBOXSD-ID12/ID13
Papersize: letter
PpdFiles:
HP_LaserJet_CM1415fnw_2: HP LaserJet CM1410 Series Postscript (recommended)
qw: HP Fax2 hpcups
HP_Officejet_Pro_X476dw_MFP: HP Officejet Pro X476-X576 MFP Postscript (recommended)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-48-generic root=UUID=dba2a232-45d8-4552-88a9-13abdad061ce ro quiet splash vt.handoff=7
SourcePackage: hplip
UpgradeStatus: Upgraded to trusty on 2014-05-15 (319 days ago)
dmi.bios.date: 12/23/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080016
dmi.board.asset.tag: NA
dmi.board.name: ZBOXSD-ID12/ID13
dmi.board.vendor: ZOTAC
dmi.board.version: XX
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080016:bd12/23/2010:svnZOTAC:pnZBOXSD-ID12/ID13:pvrXX:rvnZOTAC:rnZBOXSD-ID12/ID13:rvrXX:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: ZBOXSD-ID12/ID13
dmi.product.version: XX
dmi.sys.vendor: ZOTAC
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References
