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I finally solved this myself. The trick is, for some reason I am not |
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sure of, I have broken device node /dev/lp0 when doing upgrading. The |
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next time I start to print something, cups send the output to /dev/lp0, |
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creating a normal file there, so I didn't notice /dev/lp0 had been |
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missing. |
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|
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The solution is to: |
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# rm /dev/lp0 |
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# mknod /dev/lp0 c 6 0 |
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|
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Then the printer start to work. |
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|
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在 2006-12-18一的 20:00 +0800，张韡武写道： |
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> I have been struggling with this issue for a long time: using 2.6 |
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> kernel, device /dev/lp0 swallow all input to it without error, and |
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> nothing comes out from the printer. |
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> |
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> example: |
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> $ dmesg > /dev/lp0 |
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> $ [no output on commandline, no output from printer, nothing happens] |
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> |
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> also cups running on this server shows every job is completed, nothing |
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> comes out in paper form. |
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> |
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> Here is the dmesg section that seems to be related to this issue: |
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> |
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> [ 5.293312] lp: driver loaded but no devices found |
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> [ 5.340515] rtc_init: no PC rtc found |
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> [ 5.380379] /pci@1f,0/pci@1,1/ebus@1/su@14,3083f8: Keyboard port at 1fff13083f8, irq 6 |
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> [ 5.472406] /pci@1f,0/pci@1,1/ebus@1/su@14,3062f8: Mouse port at 1fff13062f8, irq 7 |
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> [ 5.561939] parport0: PC-style at 0x1fff13043bc (0x1fff13047bc), irq 8, dma 0 [PCSPP,TRISTATE,COMPAT,ECP,DMA] |
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> [ 5.812374] parport0: Printer, Hewlett-Packard hp LaserJet 3015 |
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> [ 5.979388] lp0: using parport0 (interrupt-driven). |
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> |
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> from dmesg it seems kernel not only able to detect parallel port, but |
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> also possible to activate ECP mode and detect printer model (which is |
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> correct). I also have activated all kernel configuration options I can |
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> think of. I attached my kernel configuration file as well as whole dmesg |
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> output hoping that can help. |
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> |
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> The machine is Ultrasparc U5. It has been serving as print server for |
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> more then one year, or probably two years. |
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> |
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-- |
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锐业软服（国内业务） http://www.realss.cn |
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Real SoftService http://www.realss.com |
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销售咨询(Sales Department): 0086 592 20 99987 (Chinese, German, |
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English) |
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联系：厦门大学科技园，嘉庚二号楼6楼 |
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