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author | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
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committer | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
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Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
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diff --git a/doc/kdeprint/cupsoptions.docbook b/doc/kdeprint/cupsoptions.docbook new file mode 100644 index 000000000..dc886d21c --- /dev/null +++ b/doc/kdeprint/cupsoptions.docbook @@ -0,0 +1,602 @@ +<chapter id="cupsoptions-presently-outside-kcontrol"> +<title>&CUPS; options presently not available through &kcontrol;</title> + +<para>This chapter gives you some hints about further configuration +possibilities which may not be available through the &kdeprint; &GUI; +interface to &CUPS;.</para> + +<sect1> +<title>Overview of provided features</title> + +<para>All of the most often used features and functions &CUPS; provides +are supported in &kdeprint;.</para> + +<itemizedlist> +<listitem> +<para>Printer management is supported: add, remove, modify, configure, +test, disable, enable ...</para> +</listitem> +<listitem> +<para>Job management is supported: cancel, hold, release, move to +different printer</para> +</listitem> +<listitem> +<para>Print options: for full control as provided by &CUPS;.</para> +</listitem> +</itemizedlist> + +</sect1> + +<sect1 id="where-to-find-further-chupshelp"> +<title>Where to find help when using &CUPS;</title> + +<para>A lot of information about the inner workings of &CUPS; is +available through the web interface, which &CUPS; will always +support. It works with any browser (yes, even text-based ones). Just go +to <ulink url="http://localhost:631/">http://localhost:631/</ulink> for +a start. There you find a link to locally available &CUPS; documentation +in <acronym>HTML</acronym> and <acronym>PDF</acronym> if you are new to +&CUPS;.</para> + +<para>&CUPS; is accessible through other means than &kdeprint;: +commandline and browser are two native &CUPS; interfaces. The many +commandline utilities add up to the most complete control you have on +&CUPS;. The web interface is only a subset of all available +configuration or control options. </para> + +<para>This is also true for &kdeprint;. Generally, as &CUPS; develops, +most new features will first be implemented through the commandline. Be +sure to check the latest versions of the man pages for &CUPS; to stay +up-to-date with new features after you install a new version.</para> + +<tip> +<para>Depending on your update method for &CUPS;, your active +configuration file might not have been re-placed by a new one; thus your +new, more capable &CUPS;-daemon might not have been told by the old +configuration file about the new features to use.</para> +</tip> + +<para>A complete list of available files and man pages should always be +in the &CUPS; Software Administrator Manual (<ulink +url="http://localhost:631/sam.html#FILES">http://localhost:631/sam.html#FILES</ulink>. +In the &konqueror; &URL;/location field, type +<userinput>man:/lpadmin</userinput> and +<userinput>man:/cupsd.conf</userinput> to find out about the most +important command and configuration file. You knew already about +&konqueror;'s nice abilities to show you the traditional &UNIX; man +pages, didn't you? Read this. From there you find more interesting +hints and links to other man pages and documentation.</para> + +<sect2> +<title>How to find &CUPS; related man pages</title> + +<para>Here is a way to find out which &CUPS; related man pages there +are on your system: </para> + +<screen><prompt>kurt@transmeta:~ ></prompt> <userinput><command>apropos</command> <parameter>cups</parameter></userinput> +<computeroutput> +cups-calibrate (8)- ESP Printer Calibration Tool +lpstat (1) - print cups status information +cups-lpd (8) - receive print jobs + report printer status to lpd clients +classes.conf (5) - class configuration file for cups +backend (1) - cups backend transmission interfaces +filter (1) - cups file conversion filter interfaces +cups-polld (8) - cups printer polling daemon +mime.types (5) - mime type description file for cups +cupsd (8) - common unix printing system daemon +lpadmin (8) - configure cups printers and classes +cupsd.conf (5) - server configuration file for cups +mime.convs (5) - mime type conversion file for cups +printers.conf (5) - printer configuration file for cups +mime.convs (5) - mime type conversion file for cups +cups-polld (8) - cups printer polling daemon +lpstat (1) - print cups status information +backend (1) - cups backend transmission interfaces +mime.types (5) - mime type description file for cups +cupsd (8) - common unix printing system daemon +lpadmin (8) - configure cups printers and classes +printers.conf (5) - printer configuration file for cups +cupsd.conf (5) - server configuration file for cups +filter (1) - cups file conversion filter interfaces +</computeroutput></screen> +</sect2> +</sect1> + +<sect1 id="tips-and-tricks-for-cups"> +<title>Outside &kdeprint;: Hints & Tips Tricks with &CUPS; on the +Commandline</title> + +<para>Here are a few examples of options that are presently only +available if you use the commandline. </para> + +<sect2> +<title>Allowing or denying printer access for certain users</title> + +<para>When installing (or modifying) a printer through the command line, +you can either deny or allow the usage of that printer to certain +users:</para> + +<screen><userinput><command>lpadmin</command> <option>-p</option><parameter>HeidelbergDigimaster9110</parameter> <option>-v</option> <parameter>lpd:/10.160.16.99/mqueue</parameter> <option>-u</option> <parameter>allow:kurt,sylvi,hansjoerg</parameter> <option>-E</option> <option>-P</option> <parameter>/home/kurt/PPDs/DVHV.ppd</parameter></userinput></screen> + +<para>will allow the usage of this (believe me: very nice and also very +professional) printer to only the three mentioned users and at the same +time deny it to all others. If another user wants to print on the +DigiMaster via this &CUPS; server, he will receive an error message +along the lines <errortype>client-error-not-possible</errortype>.</para> + +<screen><userinput><command>lpadmin</command> <option>-p</option> <parameter>HeidelbergDigimaster9110</parameter> <option>-v</option> <parameter>lpd:/10.160.16.99/mqueue</parameter> <option>-u</option> <parameter>deny:tackat,boss,waba</parameter> <option>-E</option> <option>-P</option> <parameter>/home/kurt/PPDs/DVHV.ppd</parameter></userinput></screen> + +<para>will deny the usage of this same printer to the three mentioned +users and at the same time allow it to all others. If +<quote>denied</quote> user wants to print on the DigiMaster via this +&CUPS; server, he will receive an error message along the lines +<errortype>client-error-not-possible</errortype>.</para> + +<note> +<para>Only one of the two options may be used at one time; at present +there is no support to have a similar option in a per-group based +way. This will be implemented in the future.</para> +</note> + +</sect2> +<sect2> +<title>Imposing Quotas for certain printers</title> + +<para>Sometimes you want to impose quotas for certain printers. With +quotas you can set upper limits for the number of pages or the amount of +data to be printed over a certain period to a certain printer.</para> + +<para>Quotas can be set with the <option>-o</option> option when +installing a printer with the <command>lpadmin</command> command, or +afterwards for an already existing printer. Following are some +guidelines (which are missing at the time of writing in the, official +&CUPS; documentation):</para> + +<itemizedlist> +<listitem> +<para>With &CUPS; you may have pagecount- and filesize-based quotas for +individual printers.</para> +</listitem> + +<listitem> +<para>Quotas are calculated for each user individually (so a single set +of limits applies to all users for the printer concerned).</para> +</listitem> + +<listitem> +<para>Quotas include banner pages (if those are used).</para> +</listitem> + +<listitem> +<para>This means: you can limit every user to 20 pages per day on an +expensive printer, but you cannot limit every user except <systemitem +class="username">Kurt</systemitem> or <systemitem +class="username">root</systemitem>.</para> +</listitem> + +<listitem> +<para>There are <option>job-k-limit</option>, +<option>job-page-limit</option>, and <option>job-quota-period</option> +options to give when setting up a printer.</para> +</listitem> + +<listitem> +<para><option>job-quota-period</option> sets a time interval for quota +computing (intervals are determined in seconds; so a day is +60x60x24=86.400, a week is 60x60x24x7=604,800, and a month is +60x60x24x30=2.592.000 seconds.)</para> +</listitem> + +<listitem> +<para>For quotas to be enforced, the time-period +<emphasis>plus</emphasis> at least one job-limit must be set to +non-zero.</para> +</listitem> + +<listitem> +<para>The default value of 0 for <option>job-k-limit</option> specifies +that there is no limit.</para> +</listitem> + +<listitem> +<para>The default value of 0 for <option>job-page-limit</option> +specifies that there is no limit.</para> +</listitem> + +<listitem> +<para>The default value of 0 for <option>job-quota-period</option> +specifies that the limits apply to all jobs that have been printed by a +user that are still known to the system.</para> +</listitem> +</itemizedlist> + +<sect3> +<title>Working Examples:</title> + +<para>Working, as both, time-period <emphasis>plus</emphasis> one or +both job-limits are defined</para> + +<screen><userinput><command>lpadmin</command> <option>-p</option> <parameter>danka_infotec_4850</parameter> <option>-o</option> <parameter>job-quota-period=604800</parameter> <option>-o</option> <parameter>job-k-limit=1024</parameter></userinput></screen> + +<para>This sets a limit of a file size of 1 MB (in total) for each user +of existing printer <systemitem +class="resource">danka_infotec_4850</systemitem> during one week.</para> + +<screen><userinput><command>lpadmin</command> <option>p</option> <parameter>danka_infotec_4105</parameter> <option>-o</option> <parameter>job-quota-period=604800</parameter> <option>-o</option> <parameter>job-page-limit=100</parameter></userinput></screen> + +<para>This sets a limit of 100 pages (in total) for each user of +existing printer <systemitem +class="resource">danka_infotec_4105</systemitem> during one week.</para> + +<screen><userinput><command>lpadmin</command> <option>-p</option> <parameter>danka_infotec_P450</parameter> <option>-o</option> <parameter>job-quota-period=604800</parameter> <option>-o</option> <parameter>job-k-limit=1024</parameter> <option>-o</option> <parameter>job-page-limit=100</parameter></userinput></screen> + +<para>This sets a combined limit of 1 MB (in total) and 100 pages (in +total) for each user of existing printer <systemitem +class="resource">danka_infotec_P450</systemitem> during one +week. Whichever limit is reached first will take effect.</para> + +</sect3> + +<sect3> +<title>Not working examples</title> + +<para><emphasis>NOT</emphasis> working, as only +<emphasis>one</emphasis>, time-period <emphasis>or</emphasis> job-limit +is defined)</para> + +<screen><userinput><command>lpadmin</command> <option>-p</option> <parameter>danka_infotec_P320</parameter> <option>-o</option> <parameter>job-quota-period=604800</parameter></userinput> + +<userinput><command>lpadmin</command> <option>-p</option> <parameter>danka_infotec_FullColor</parameter> <option>-o</option> <parameter>job-page-limit=100</parameter></userinput> + +<userinput><command>lpadmin</command> <option>-p</option> <parameter>danka_infotec_HiSpeed</parameter> <option>-o</option> <parameter>job-k-limit=1024</parameter></userinput></screen> + +</sect3> + +<sect3> +<title>Related Error Messages</title> + +<para>Once a user reaches his quota limit, he'll get a +<errortype>client-error-not-possible</errortype> message, if he wants to +print.</para> + +</sect3> + +</sect2> + +<sect2> +<title>Installing a <quote>raw</quote> printer</title> + +<para>There are different ways to define a <quote>raw</quote> +printer. One comfortable one is to use the <command>lpadmin</command> +command. Just don't define a &PPD; file to be used for that printer and +it will be a raw one:</para> + +<screen><userinput><command>lpadmin</command> <option>-p</option> <parameter>Raw_Danka_infotec</parameter> <option>-E</option> <option>-v</option> <parameter>lpd://10.160.16.137/PORT1</parameter></userinput></screen> + +<para>Raw printer queues are those which don't touch the print file to +transform it to a different file format. You need this for example when +printing from &Windows; clients via Samba through a &CUPS; server to a +<acronym>PCL</acronym> printer: in this case the &Windows; side printer +driver would generate the finished print file format for the target +printer and filtering it through &CUPS; filters would only harm the +purpose. Under certain circumstances (if you want to make sure that the +file goes to the printer <quote>unfiltered</quote> by &CUPS;) the +<quote><command>lpadmin</command> without a &PPD;</quote> comes in +handy.</para> + +</sect2> + +</sect1> +<sect1 id="troubleshooting-cups"> +<title>Troubleshooting &CUPS; in &kdeprint;</title> + +<para>This section of the &kdeprint; Handbook will live from the +readers' feedback. Here is just a small beginning.</para> + +<sect2> +<title>Error Messages</title> + +<qandaset> +<qandaentry> +<question> +<para>What does the error +<errortype>client-error-bad-request</errortype> mean?</para> +</question> +<answer> +<para>The user sent a file to the &CUPS; which the server could not +process. You get this also upon sending an <quote>empty</quote> +file.</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>And <errortype>client-error-not-possible</errortype>?</para> +</question> +<answer> +<para>User is either not allowed to print to a certain printer or has +achieved his quota (based on file size and/or page number)</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>How about <errortype>client-error-not-found</errortype>?</para> +</question> +<answer> +<para>The user tried to access a nonexistent resource on the &CUPS; +server, such as trying to print a nonexistent file, or one that you are +denied permission to read.</para> +</answer> + +</qandaentry> +</qandaset> + +</sect2> + +<sect2> +<title>Questions and Answers</title> + +<qandaset> +<qandaentry> +<question> +<para>Why can't I re-start my jobs?</para> +</question> +<answer> +<para>To be able to re-start your <quote>completed</quote> jobs from the +web interface, you need a setting in the +<filename>/etc/cups/cupsd.conf</filename> file: set +<userinput>PreserveJobFiles True</userinput>.</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>How do I get rid of the long list of completed jobs in the web +interface?</para> +</question> +<answer> +<para>TODO</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>How does page accounting work?</para> +</question> +<answer> +<para>&CUPS; does the <quote>print accounting</quote> by passing nearly +every job through the <quote>pstops</quote> filter. This one does, +amongst other things, the page counting. Output of this filter there may +be piped into other filters (like pstoraster --> rastertopcl) or sent to +the printer directly (if it is a &PostScript; printer).</para> + +<para>In any case, this works for network, parallel, serial or +<acronym>USB</acronym> printers the same. For pstops to work, it needs +<acronym>DSC</acronym>, Document Structuring Convention compliant +&PostScript; (or near-equivalent) as input. So it calculates the pages +during filtering on the print server and writes info about every single +page (what time, which user, which job-ID and -name, which printer, how +many copies of which pages of the document, how many kilo-bytes?) into +<filename>/var/log/cups/page_log</filename>.</para> + +<para>By the way: on my personal <quote>wishlist</quote> is a hack of +<quote>webalizer</quote> to read and analyze the page_log and give a +similar output. Anyone?</para> + +<para>However, it is <emphasis>not</emphasis> giving correct results in +the following cases:</para> + +<itemizedlist> +<listitem> +<para>The printer jams and maybe therefor throw away the job (real live +experience; or maybe throwing away the job because of problems with the +data format)</para> +</listitem> +<listitem> +<para>Jobs printed as <quote>raw</quote> are always counted as size of 1 +page (and maybe multiple copies).</para> +</listitem> +</itemizedlist> + +<para>Therefore the page accounting of &CUPS; is <quote>only</quote> +an approximation (in many cases an excellent or at least good one, in +others a quite poor one). The only reliable print count is the one +done by the internal printer counter. (Because this is the one you pay +for, if you are on a <quote>click price</quote> or similar.) Some, by +far not most, printers can be queried remotely for that information +via <acronym>SNMP</acronym> (Simple Network Management Protocol). That +means, in a bigger network with many different printers there +<emphasis>is</emphasis> just no completely reliable and accurate page +accounting tool!</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>Why doesn't page-accounting work with &Windows; clients?</para> +</question> +<answer> +<para>From &Windows; clients jobs nearly always need to be sent as +<quote>raw</quote>. Why? If &CUPS; works as a print server for &Windows; +clients using the original native &Windows; driver for the target print +device, this guarantees the correct formatting of the job on the clients +already; therefor the server should not touch it and print +<quote>raw</quote>; therefor no filtering is started (and this is not +even possible as the input from the clients is not &PostScript; as +pstops expects; hence no page-count other than the default +<quote>1</quote>.</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>How do I get a list of available options for a given printer or a +&PPD; file?</para> +</question> +<answer> +<para>See the man page for the <command>lpoptions</command> command. You +may investigate a &CUPS;-enabled box about any option of its available +printers. There is no need to have the printer installed locally. As +long as the printer is available locally (through the &CUPS; +<quote>printer browsing</quote> feature), it will also work +remote.</para> + +<para>To query for a printers' option typing +<userinput><command>lpoptions</command> <option>-p</option> +<parameter>HitachiDDP70MicroPress</parameter> +<option>-l</option></userinput> will give a long listing of all +available options as read from the &PPD; file for the given +Hitachi-Printer (in my case installed on remote server +transmeta). Remote server <systemitem +class="systemname">Transmeta</systemitem> and its &CUPS; daemon as well +as the localhost's &CUPS; daemon need to be up and running for this to +succeed.</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>How do I read the listing retrieved by the +<command>lpoptions</command> command?</para> +</question> + +<answer> +<para>You know that for &PostScript; printer manufacturers it is +<quote>legal</quote> to define their own internal names and procedures +even for standard &PostScript; options. As long as the driver is able to +retrieve the option from the &PPD; and show it to the user in a way that +he understands it everything is OK. But what do <emphasis>you</emphasis> +do, if you want to use some obscure printer options on the command line? +How do you find out its exact syntax?</para> + +<para>Let's take an example. Looking at Hitachi's DDP70 printer and how +it implements duplex printing is revealing somehow. How do you tell how +to print double sided? duplex or Duplex? Or another name altogether?.</para> + +<screen><userinput><command>lpoptions</command> <option>-h</option> <parameter>transmeta</parameter> <option>-p</option> <parameter>Hitachi_DDP70_ClusterPrintingSystem</parameter> <option>-l</option> | <command>grep</command> <parameter>uplex</parameter></userinput></screen> + +<para>This leads to the output</para> + +<screen><computeroutput>TR-Duplex/Duplex: False *True</computeroutput></screen> + +<para>This is to be interpreted like follows:</para> + +<itemizedlist> +<listitem> +<para>The name of the investigated option is +<option>TR-Duplex</option>;</para> +</listitem> +<listitem> +<para>Behind the slash you see the translation of the option, as it +should be shown in a &GUI; or Web interface +(<quote>Duplex</quote>);</para> +</listitem> +<listitem> +<para>The option may take one of the two values +<parameter>False</parameter> or <parameter>True</parameter>;</para> +</listitem> +<listitem> +<para>The present setting is <parameter>True</parameter> to be +recognized by the marking with a star <literal>*</literal>.</para> +</listitem> +</itemizedlist> + +<para>To override the present default setting (duplex) and print a job +in simplex, you need to use the following command: </para> + +<screen><userinput><command>lpr</command> <option>-P</option> <parameter>Hitachi_DDP70_ClusterPrintingSystem</parameter> <option>-o</option> <parameter>TR-Duplex=False</parameter> <parameter>/path/to/your/printjob</parameter></userinput></screen> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>How do I get a nicely formatted listing of available options for a +given printer or &PPD;?</para> +</question> +<answer> +<para>Use the <command>lphelp</command> command which may be installed +on your system locally. There is not yet a man page for +<command>lphelp</command>.</para> + +<screen><userinput><command>lphelp</command> <parameter>infotecP450</parameter></userinput></screen> + +<para>This lists the available options for the named printer. It is +nicely formatted and does explain every available option and how to use +it. You can query different printers' options at once:</para> + +<screen><userinput><command>lphelp</command> <parameter>infotec7410color</parameter> <parameter>DANKA_fullcolor_D2000</parameter> <parameter>HP_ColorLaserJet8550</parameter></userinput></screen> + +<para>It also works for &PPD; files. Just specify the path to the +&PPD;:</para> + +<screen><userinput><command>lphelp</command> <filename>/home/kurt/PPDs/HP-ColorLaserJet8550.ppd</filename></userinput></screen> +</answer> +</qandaentry> +</qandaset> + +</sect2> +<sect2> +<title>Solving Problems</title> + +<para>No system is perfect. Here are some commonly seen traps people +have fallen into.</para> + +<qandaset> +<qandaentry> +<question> +<para>My printer named <quote>3-lp-duplex</quote> shows erratic +behavior. What's wrong?</para> +</question> +<answer> +<para>The printer names used in &CUPS; shall start with a letter and may +contain up to 128 letters, numbers or underscores. Using dashes may lead +to problems. Speaking about naming: printer names in &CUPS; are not case +sensitive. So a printer named <systemitem +class="resource">Best_of_Danka</systemitem> will be the same as +<systemitem class="resource">best_of_danka</systemitem> or <systemitem +class="resource">BEST_OF_DANKA</systemitem>. (This is a requirement of +&IPP;, which &CUPS; is fully compliant with).</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>Why do I get <errortype>Unable to connect to SAMBA host: +Success</errortype> with my printer shares from &Windows; accessed via +Samba?</para> +</question> +<answer> +<para>Are the rights on the remote &Windows; box set correctly for you? +Are you actually allowed to print on the &Windows; shared +printer?</para> +</answer> +</qandaentry> + +<qandaentry> +<question> +<para>My files for printer <systemitem class="resource">lp</systemitem> +sometimes mysteriously disappear and two days later I am told they got +printed on a printer three floors below my office. What is going on?</para> +</question> +<answer> +<para>Believe me, it is very unlikely that your printer is the only one +with the name <systemitem class="resource">lp</systemitem>. Maybe +&CUPS; is playing a trick on you. As you might have the setting +<quote>ImplicitClasses On</quote> activated, &CUPS; tries to stuff all +printers it sees on the network into a <quote>Class</quote> name lp. All +jobs destined to lp are sent to this class and the first available +member prints it. So if you had this nice fellow (who listened closely +when you raved about &CUPS; and &kdeprint;) install &CUPS; and poke +around the system...get the idea?</para> + +<para>Take my advice: choose a unique name for any network printer! +(Mind you, the one on your parallel port also turns out to be a network +printer for the rest of the world if you don't take care of your +settings).</para> +</answer> +</qandaentry> +</qandaset> +</sect2> +</sect1> +</chapter> |