This is the error message in error_log.
E [24/Apr/2006:05:32:25 +0800] [Job 4] foomatic-rip version $Revision: 3.43.2.15 $ running...
E [24/Apr/2006:05:32:25 +0800] [Job 4] Parsing PPD file ...
E [24/Apr/2006:05:32:25 +0800] [Job 4] *cupsFilter: "application/vnd.cups-postscript 0 foomatic-rip"
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option ColorSpace
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option Resolution
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option PageSize
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option PageRegion
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option Model
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option PrintoutMode
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option ImageableArea
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option PaperDimension
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option Duplex
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option Quality
E [24/Apr/2006:05:32:25 +0800] [Job 4] Added option Font
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] Parameter Summary
E [24/Apr/2006:05:32:25 +0800] [Job 4] -----------------
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] Spooler: cups
E [24/Apr/2006:05:32:25 +0800] [Job 4] Printer: HP-PSC-750
E [24/Apr/2006:05:32:25 +0800] [Job 4] PPD file: /etc/cups/ppd/HP-PSC-750.ppd
E [24/Apr/2006:05:32:25 +0800] [Job 4] Printer model: HP PSC 750 Foomatic/hpijs (recommended)
E [24/Apr/2006:05:32:25 +0800] [Job 4] Job title:
E [24/Apr/2006:05:32:25 +0800] [Job 4] File(s) to be printed:
E [24/Apr/2006:05:32:25 +0800] [Job 4] <STDIN>
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] GhostScript extra search path ('GS_LIB'): /usr/share/cups/fonts
E [24/Apr/2006:05:32:25 +0800] [Job 4] Pondering option 'job-uuid=urn:uuid:4e01928b-8111-323f-732e-abcfd24e81bf'
E [24/Apr/2006:05:32:25 +0800] [Job 4] Unknown option job-uuid=urn:uuid:4e01928b-8111-323f-732e-abcfd24e81bf.
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] ================================================
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] File: <STDIN>
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] ================================================
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] Reading PostScript input ...
E [24/Apr/2006:05:32:25 +0800] [Job 4] --> This document is DSC-conforming!
E [24/Apr/2006:05:32:25 +0800] [Job 4] Job claims to be DSC-conforming, but "%%BeginProlog" was missing before first line with another "%%Begin..." comment (is this a TeX/LaTeX/dvips-generated PostScript file?). Assuming start of "Prolog" here.
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] -----------
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginProlog
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%EndProlog
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] -----------
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginSetup
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginFeature: *PrintoutMode Normal
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: PrintoutMode=Normal --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %% FoomaticRIPOptionSetting: PrintoutMode=Normal
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: PrintoutMode=Normal --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginFeature: *Quality FromPrintoutMode
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: Quality=FromPrintoutMode --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %% FoomaticRIPOptionSetting: Quality=@PrintoutMode
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: Quality=FromPrintoutMode --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginFeature: *PageSize A4
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: PageSize=A4 --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %% FoomaticRIPOptionSetting: PageSize=A4
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: PageSize=A4 --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginFeature: *Duplex None
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: Duplex=None --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %% FoomaticRIPOptionSetting: Duplex=None
E [24/Apr/2006:05:32:25 +0800] [Job 4] Option: Duplex=None --> Setting option
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%EndSetup
E [24/Apr/2006:05:32:25 +0800] [Job 4] Inserting PostScript code for CUPS' page accounting
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] -----------
E [24/Apr/2006:05:32:25 +0800] [Job 4] New page: 1 1
E [24/Apr/2006:05:32:25 +0800] [Job 4] Inserting option code into "PageSetup" section.
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%BeginPageSetup
E [24/Apr/2006:05:32:25 +0800] [Job 4] Found: %%EndPageSetup
E [24/Apr/2006:05:32:25 +0800] [Job 4] End of page header
E [24/Apr/2006:05:32:25 +0800] [Job 4] Flushing FIFO.
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] Starting renderer
E [24/Apr/2006:05:32:25 +0800] [Job 4] JCL: <job data>
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] renderer PID kid4=15286
E [24/Apr/2006:05:32:25 +0800] [Job 4] renderer command: gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPAUSE -sDEVICE=ijs -sIjsServer=hpijs -sDeviceManufacturer="HEWLETT-PACKARD" -sDeviceModel="DESKJET 930" -dDEVICEWIDTHPOINTS=595 -dDEVICEHEIGHTPOINTS=842 -dDuplex=false -r300 -sIjsParams=Quality:Quality=0,Quality:ColorMode=2,Quality:MediaType=0,Quality:PenSet=2 -dIjsUseOutputFD -sOutputFile=- -
E [24/Apr/2006:05:32:25 +0800] [Job 4]
E [24/Apr/2006:05:32:25 +0800] [Job 4] Closing renderer
E [24/Apr/2006:05:32:25 +0800] [Job 4] perl: warning: Setting locale failed.
E [24/Apr/2006:05:32:25 +0800] [Job 4] perl: warning: Please check that your locale settings:
E [24/Apr/2006:05:32:25 +0800] [Job 4] LANGUAGE = (unset),
E [24/Apr/2006:05:32:25 +0800] [Job 4] LC_ALL = (unset),
E [24/Apr/2006:05:32:25 +0800] [Job 4] LANG = "en_US"
E [24/Apr/2006:05:32:25 +0800] [Job 4] are supported and installed on your system.
E [24/Apr/2006:05:32:25 +0800] [Job 4] perl: warning: Falling back to the standard locale ("C").
E [24/Apr/2006:05:32:25 +0800] [Job 4] foomatic-gswrapper: gs '-dBATCH' '-dPARANOIDSAFER' '-dQUIET' '-dNOPAUSE' '-sDEVICE=ijs' '-sIjsServer=hpijs' '-sDeviceManufacturer=HEWLETT-PACKARD' '-sDeviceModel=DESKJET 930' '-dDEVICEWIDTHPOINTS=595' '-dDEVICEHEIGHTPOINTS=842' '-dDuplex=false' '-r300' '-sIjsParams=Quality:Quality=0,Quality:ColorMode=2,Quality:MediaType=0,Quality:PenSet=2' '-dIjsUseOutputFD' '-sOutputFile=/dev/fd/3' '/dev/fd/0' 3>&1 1>&2
E [24/Apr/2006:05:32:26 +0800] [Job 4] KID3 exited with status 0
E [24/Apr/2006:05:32:26 +0800] [Job 4] KID4 exited with status 9
E [24/Apr/2006:05:32:26 +0800] [Job 4] Renderer exit stat: 9
E [24/Apr/2006:05:32:26 +0800] [Job 4] Process dying with "error closing *main::STDOUT", exit stat: 9
E [24/Apr/2006:05:32:26 +0800] [Job 4] error: Broken pipe (32)
E [24/Apr/2006:05:32:26 +0800] [Job 4] error closing *main::STDOUT
E [24/Apr/2006:05:32:26 +0800] [Job 4] KID3 finished
E [24/Apr/2006:05:32:26 +0800] [Job 4] Renderer process finished
E [24/Apr/2006:05:32:26 +0800] [Job 4] Killing process 15285 (KID3)
E [24/Apr/2006:05:32:26 +0800] [Job 4] Process dying with "Error closing renderer", exit stat: 9
E [24/Apr/2006:05:32:26 +0800] [Job 4] error: Bad file descriptor (9)
E [24/Apr/2006:05:32:26 +0800] [Job 4] Error closing renderer
E [24/Apr/2006:05:32:28 +0800] PID 15280 (/usr/lib/cups/filter/foomatic-rip) stopped with status 9!
Do you have no output at all to the printer?
Seems related to bug #34971. Can you try if using a command line as suggested in this bug works.