[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
Tres Finocchiaro, this is an old bug report which is already marked as fixed. Therefore I recomment to first boot a live system of a newer Ubuntu release and check whether the problem is gone there. If the problem still persists, it probably has another origin than this bug. In this case please report a new bug following the instructions on https://wiki.ubuntu.com/DebuggingPrintingProblems -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user)
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
I can confirm that this is working for me in Precise. You must add Option usb-unidir true to the printers.conf file -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c519e5fe-c1ce-42e5-a875-c395070a15ab ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date:
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
I too have a hard time determining if this issue is fixed. I tried contacting Canonical for paid support on this to no avail. Here is the AskUbuntu question: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1001028 Here is the bug report for my FOSS Java software: https://github.com/qzindustries/qz-print/issues/17 Even manual build instructions would suffice at this point. 12.04 is LTS so the client I'm dealing with wants to use it for a Kiosk solution. The print delays aren't observable on Windows or OSX, which prevents Ubuntu from being a reliable solution for the Kiosks at this time. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
*Correction, Here is the AskUbuntu question: http://askubuntu.com/questions/427176/cups-print-delays/ -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c519e5fe-c1ce-42e5-a875-c395070a15ab ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/07/2010
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
I have this problem with Epson Stylus Photo R300 printer, tried setting lpadmin -p Stylus-Photo-R330 -o usb-unidir-default=true but still have several seconds delay at the end of print job, i.e. the printer stops, waits several seconds, then does final carriage return and paper feed. I've also tried to restart cups (just in case), but it didn't help. I have the following in dmesg: [18990.523142] usblp0: removed # when print job starts [19019.917018] usblp0: USB Bidirectional printer dev 8 if 1 alt 0 proto 2 vid 0x04B8 pid 0x0803 # when printer finally does paper feed Do I understand correctly that this should have worked with current cups in Precise? Any help, please? ** Attachment added: Printer lsusb output https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1001028/+attachment/3418957/+files/printer.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series:
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
The current version of CUPS in Quantal sets uni-directional for all Zebra printers, so the problem of the original poster is solved out-of- the-box now. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c519e5fe-c1ce-42e5-a875-c395070a15ab ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
Will that change be back-ported to Precise? Will that work for existing printer defintions, or new ones only? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c519e5fe-c1ce-42e5-a875-c395070a15ab ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/07/2010
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
I did not decide yet but probably we will backport the change to Precise. The change is immediately active, also on existing printer definitions. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c519e5fe-c1ce-42e5-a875-c395070a15ab ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably fresh
[Desktop-packages] [Bug 1001028] Re: Delay after every print job on USB
OK, latest update for CUPS and ML1710 and everything is back to normal again. I can queue up print jobs, switch on the printer and they will all come out. Thanks! -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1001028 Title: Delay after every print job on USB Status in “cups” package in Ubuntu: Fix Released Status in “cups” source package in Precise: Fix Released Bug description: Ubuntu 12.04 64 bit (also 32 bit is affected) Zebra LP 2844-Z USB printer - connected with a generic raw queue driver. usblp0 appears to disconnect after every print job and then automatically reconnect after 8 seconds. The next job to the printer won't print until it is reconnected. This is a problem for us in a high volume printing scenario. Here are messages from syslog: May 17 16:47:17 mlcx500 kernel: [25464.991868] usblp0: removed May 17 16:47:25 mlcx500 kernel: [25473.131745] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x0A5F pid 0x0027 May 17 16:47:25 mlcx500 udev-configure-printer: add /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/usb/lp0 May 17 16:47:25 mlcx500 udev-configure-printer: device devpath is /devices/pci:00/:00:1d.0/usb2/2-1/2-1.2 May 17 16:47:25 mlcx500 udev-configure-printer: Device already handled Note the 8 second pause between the first and second messages. Not sure where the disconnect is coming from. It doesn't appear to be hardware related as I have the problem with various combinations of printer and computer. [IMPACT] On some printers it can happen that with Precise's new libusb-based USB CUPS backend there is a small delay of around 8 seconds after each job. In environments where printers are continuously printing small jobs (~1 page each) this is a serious impact on printing performance. The USB backend in the proposed package has a configurable option to turn off the bi-directional operation of the backend (sending print data and also reading answers of the printer). With uni-directional printing (only sending print data) the delay disappears. Uni-directional printing can be set manually. We will give instructions in the Release Notes of 12.04.1. [TESTCASE] Unfortunately, for reproducing this bug one needs the actual printer. Connect a printer with the problem to the USB port of the computer. With current Precise you get the mentioned 8-second delay after each job when you print several jobs one after the other. If you install the proposed package you can suppress bi-directional printing via lpadmin -p queue name -o usb-unidir-default=true Now the jobs get printed directly one after the other. [Regression Potential] The patch looks perhaps more dramatic than it is. This is because several code sections are put into if blocks, indenting all the (unchanged) code lines. This especially happens because now we suppress using the back channel for selected printers (and also printers which claim to be uni-directional only). The code was developed in several steps and uploaded step-by-step to my PPA. There the reporters of the bugs covered by this SRU and some additional bugs (bug 902535, bug 995111) tested it intensively. They did not hit any regressions compared to stock Precise or the first CUPS SRU. The code is also applied to the CUPS package in Quantal and this also did not cause any regression bug report yet. I have tested the code on four HP printers (HP LaserJet 3390, HP Color LaserJet CM3530 MFP, HP PhotoSmart C8100, HP PhotoSmart C5200, all on direct USB) and one Epson printer (Epson Stylus Photo 880, both direct USB and parallel with Prolific USB - Parallel adaptor) and all work fine, no regressions. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: cups 1.5.2-9ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Thu May 17 17:47:22 2012 InstallationMedia: Ubuntu 12.04 LTS Precise Pangolin - Release amd64 (20120425) Lpstat: device for Officejet-6300-series: dnssd://Officejet%206300%20series%20%5B75F808%5D._pdl-datastream._tcp.local/ device for z6: usb://Zebra%20Technologies/ZTC%20LP2844-Z-200dpi?serial=46J08310 MachineType: Dell Inc. Precision M6500 Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Officejet-6300-series: HP Officejet 6300 Series, hpcups 3.12.2 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c519e5fe-c1ce-42e5-a875-c395070a15ab ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present
