Subject:
Re: Scanner Sometimes Works
From:
"Jaeger, Gerhard" ####@####.####
Date:
30 Jan 2001 08:18:35 -0000
Message-Id: <01013009254102.00577@gja>
This looks like the problem we have on other configurations
and it seems, that this is communication problem which affects
some kind of parallelport-hardware. The problem is known, and
I hope to path this one day ;-)
I think there are two things you can try:
1. simply connect the scanner to lp0 and the printer to lp1
2. leave the scanner on lp1 and change the #if 0 define in the
file plustek_driver/h/plustek_scan.h (at line 72 or so) to #if 1.
Then recompile and reinstall the driver.
Tell us if one of the points will help.
Gerhard
On Die, 30 Jan 2001, Paul Boniol wrote:
> I appologize for the length, but am not sure what may help decipher what is
> going on with my system.
>
> I can sometimes get my parallel port scanner to work with Linux (I've
> had it for a
> while. Probably bought before I got into Linux.) but it takes quite a
> bit of playing
> to get it to work. It is a Plustek OpticPro 9636T. Connected to lp1,
> ioport
> 0x278, IRQ 3, DMA 3 (although the DMA does not show up in /proc/dma, but
> it does in /proc/parport/1/hardware?) I know IRQ3 is usually COM2, but
> I am low on
> IRQ's and don't have a COM2 on this computer.
>
> I had installed SANE 1.0.3-2 from the RPM when I installed Mandrake 7.2.
> I downloaded, compiled and installed the Plustek module (version 0-36-37)
> according to the directions. Inserted the proper lines into
> /etc/modules.conf
> and /etc/modules. When the computer reboots all appears to go well.
> All the log messages are fine, no errors, shows proper options were used,
> modules installed, etc.
>
> If I do
> scanimage -L
> it will list the scanner most of the time, but if I do it again, the
> command does not have any output until I unload the scanner
> module. (Message is `plustek:/dev/pt_drv' is a Plustek 9636T/
> 12000T Driver-Version 0.36 flatbed scanner)
>
> If I try
> scanimage --format PPM --mode Color > test.ppm
> it will usually give the message
> scanimage: no SANE devices found
> and occasionally
> scanimage: sane_start: Error during device I/O
> and once every now and then, it works.
>
> The only way I have been able to get it to work is to unload the
> Plustek module (pt_dev) before running scanimage. (Scanimage
> loads the module again when it starts.)
>
> The results are similar under X using the xscanimage plugin for Gimp.
> Starting Gimp from a terminal, it will occasionally display the message
> xscanimage: no devices available.
> Most of the time (and always following the previous message) it will
> display
> Gtk-CRITICAL**: file gtkmain.c line 534 (gtk_main_quit): assertion
> 'main_loops != NULL' failed.
> Occasionally it will display the scanner interface. When it does, it will
> usually respond
> Failed to start scanner: Error during device I/O
> when you click scan or Preview Window and Acquire Preview.
> After it has scanned once, (either scan or preview), it will not scan
> again until closed, module removed, and the process started again.
>
> I tried to determine if it was some sort of a timing/scanner stage
> [warming up, ready, light on, light off] issue but was not able to
> determine any pattern other than if the light turned off, then on, the
> next time I tried it would usually load [but not necessarily scan].
>
> Any other details:
> I had made /dev/pt_dev, which is the default device for the driver.
> crw-rw-r-- 1 root root 40,0 Jan 28 5:00 /dev/pt_dev
> (Although there is another entry in /dev with character 40, 0 that was
> created by the Mandrake install, mmetfgrab.
> ln -s /dev/mmetfgrab /dev/pt_dev did not work.)
>
> Selected lines from /etc/modules.conf
> alias parport_lowlevel parport_pc
> options parport_pc io0x378,0x278 irq=7,3 dma=-1,3
> alias char-major-40 pt_drv
> options pt_drv lampoff=180 warmup=15 port=0x278 lOffonEnd=0 mov=0
>
> /etc/modules
> scsi_hostadapter
> sr_mod
> parport
> parport_pc
> lp
> pt_drv
>
> Selected messages from /var/log/messages
>
> During bootup
> kernel: parport0: PC-style at 0x378, irq 7 [SPP,PS2,EPP]
> kernel: parport1: PC-style at 0x278 (0x678), irq 3, dma 3
> [SPP,ECP,ECPEPP,ECPPS2]
> kernel: lp0: using parport0 (interrupt-driven).
> kernel: lp1: using parport1 (interrupt-driven).
> kernel: pt_drv : driver version = 0.36-38
> kernel: pt_drv : driver version = 0.36-38
>
> After rmmod, modprobe creates these messages in /var/log/messages
>
> kernel: pt_drv : driver version = 0.36-38
> kernel: pt_drv : driver version = 0.36-38
> kernel: pt_drv0: 9636T/12000T found on port 0x0278
> kernel: pt_drv0: Lamp-Timer set to 180 seconds.
> kernel: pt_drv0: WarmUp period set to 15 seconds.
> kernel: pt_drv0: Lamp untouched on driver unload.
>
> Sometimes followed by one of the following:
> modprobe: modprobe: Can't locate module binfmt-0000
> modprobe: modprobe: Can't locate module char-major-81
>
> Any particular options that should be seclected during a kernel compile
> that are necessary for SANE/the plustek driver? (Printer works fine
> on lp0, if that means anything.)
>
> Any ideas what's going on or how to get it to work consistently?
>
> Paul
>
>
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