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- 4. _K_n_o_w_n__P_r_o_b_l_e_m_s__a_n_d__W_o_r_k_a_r_o_u_n_d_s
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- Known problem with the product and ways to work around them.
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- +o Some third party Impressario printer drivers are COFF
- binaries and will not work after upgrading to IRIX 6.2.
- Print drivers are in the directory /usr/lib/print. The
- _f_i_l_e(1) command can be used to determine if a binary is
- COFF. Known third party drivers that are COFF are
- "PhaserPrint for Impressario" from Tektronix and
- Genicom drivers supplied by Genicom for the Genicom
- 9080, 9160 and 9170 printers. Contact your vendor for
- updated drivers.
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- +o After updating to IRIX 6.2 the Options button on the
- Printer Manager screen and the More Options button on
- the PrintPanel screen may no longer work for some
- printers. When the Options button is selected a
- program in the /var/spool/lp/gui_interface (or
- /var/spool/lp/gui_interface/ELF) is run to display the
- options menu. All files in /var/spool/lp/gui_interface
- are COFF binaries and are ignored under IRIX 6.2 (6.2
- does not support COFF binaries) which can result in the
- More Options button not being available. The
- workaround is to update the print server with the
- latest Impressario drivers (which should be ELF
- binaries) and then re-install the printer on the server
- and the client using the Printer Manager.
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- +o When configuring a remote printer using the _p_r_i_n_t_e_r_s
- tool if the hostname specified has trailing blanks then
- the connection will fail.
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- +o Many printers that attach directly to a network
- implement lpd as a communication protocol. (In this
- case a host computer system is not involved; instead,
- the printer is connected directly to the network).
- Most of these printers should not be configured using
- the _p_r_i_n_t_e_r_s(1M) tool. Instead, install the
- _p_r_i_n_t._s_w._b_s_d_l_p_r software and configure lpr to print to
- these printers. The _p_r_i_n_t_e_r_s(1M) tool goes through an
- auto-discovery process to determine if the remote
- system is an SGI or a BSD/lpd print server. This
- process often 'confuses' the printer's network card as
- connections are made to various services in an attempt
- to discover the protocol the remote system supports (a
- remote computer system will handle these connections
- without problems but printer network cards often do
- not).
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- Impressario (an optional product) includes drivers for
- network printers that access the network printer
- directly via a TCP socket connection (as opposed to
- treating the network printer as a print server with
- full spooling capabilities as is the case when lpd
- protocols are used). This is functionally equivalent
- to connecting the printer to a physical port on the
- workstation allowing the lp spooler on the workstation
- to generate the banner page, control number of copies,
- get printer status and perform other spooler tasks.
- You may wish to purchase Impressario to communicate
- with network printers. NOTE: To support a printer
- directly connected to a network you only need to
- install Impressario on one SGI system (designated as
- the print server for the network printer(s)). Other
- systems can then be set up as clients to the SGI print
- server which will process the print jobs and then send
- the files to the network printer for printing.
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- +o When _m_a_n -_t is used to print a man page two print jobs
- are submitted (only one print job should be submitted).
- One of the print jobs is empty and may cause the lp
- system to send email to the submitter notifying them to
- check the /var/spool/lp/log file. This message can be
- ignored. The man page will still be printed.
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- +o When _m_a_n -_t is used to print a man page and the print
- server is running Impressario 1.2 the following message
- will be logged in /var/spool/lp/log: _U_n_k_n_o_w_n _c_o_m_m_a_n_d
- _l_i_n_e _o_p_t_i_o_n :: -_m_a_n_p_a_g_e. The man page will still be
- printed. Impressario 2.0 supports the -manpage option.
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- +o On Indy systems with SCSI-2 devices, there is currently
- a 2m (6 foot) limit on external cable length for SCSI
- devices instead of the normal 6m (18 foot) maximum
- cable length. If you experience "SCSI Bus Reset"
- problems, try a shorter SCSI cable, and especially try
- a high-quality SCSI cable. The importance of proper
- cabling and termination cannot be overstated. The
- optional second external SCSI bus adapter for the Indy
- can also be used to allow the addition of more external
- devices.
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- +o The _P_r_i_n_t_P_a_n_e_l (_g_l_p) program accepts filenames that
- begin with a '$' sign. Typically these filenames
- reference environment variables (e.g. $HOME/foo).
- However, if a filename is specified that begins with a
- '$' and does not have a directory component (e.g. $foo)
- and there is no file or environment variable
- corresponding to the filename and the program was
- launched from a shell window, the _P_r_i_n_t_P_a_n_e_l program
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- will hang. The same is true of filenames beginning with
- the '#' character. Note that this only effects
- _P_r_i_n_t_P_a_n_e_l programs launched from a shell window and
- not from the File Manager or desktop. The occurrence of
- these types of filenames is rare and the need to print
- such files is even more rare. There are two
- workarounds. First, if you are printing a filename
- that begins with '$' or '#', escape the character
- (.e.g. $foo should be specified as \$foo). The second
- workaround concerns dealing with a hung _P_r_i_n_t_P_a_n_e_l. If
- the program hangs you can simply kill it from the shell
- in which it was invoked.
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- +o If two _P_r_i_n_t_P_a_n_e_l programs request a printer specific
- options panel for the same printer at the same time, it
- is possible for one options panel to appear over one
- _P_r_i_n_t_P_a_n_e_l while being managed by the other _P_r_i_n_t_P_a_n_e_l.
- The effect of this is that when one _P_r_i_n_t_P_a_n_e_l is
- iconified, the options panel for the other _P_r_i_n_t_P_a_n_e_l
- is removed from the screen and vice versa. This problem
- does not effect the setting of printer specific
- options.
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- +o The busy cursor may not return to normal after a
- printer specific options panel is displayed by the
- _P_r_i_n_t_P_a_n_e_l program or the _P_r_i_n_t_e_r _M_a_n_a_g_e_r. This does
- not effect the operation of the options panel. The
- problem exists only with the options panels provided by
- certain third party printer products.
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