lpt0 always busy

From: stanley jobson (stanley.jobson_at_gmx.ch)
Date: 09/24/05

  • Next message: Dan Ponte: "Re: lpt0 always busy" 
    Date: Sat, 24 Sep 2005 18:09:09 +0200
To: freebsd-stable@freebsd.org

    hi,
    i am now trying for weeks to get my lpt0 working without any success :(

    i always get "device busy" (running lptcontrol, lptest,
    open(/dev/lpt0)). i found a lot of questions about this via google and
    some hints too (e.g. excluding device ppi from kernel) but all this
    didnt help :(

    i should mention that my printer connected to lpt0 is a funny gdi
    printer which only works under win98. so my idea was to use qemu to run
    a emulated win98 to get my printer working - but therefore qemu needs to
    be able to open /dev/lpt0 ...

    finally i wrote a simple c prog which just calls open(/dev/lpt0) but it
    also always fails with device busy :(

    what are the requirements to successfully open lpt0 port (apart from
    having connected a printer to it) ?

    does fbsd expects a response from the printer (e.g. ready status)? maybe
    my printer is not able to do this ... if so: what are possible
    workarounds? could i convice the kernel that lpt0 is ready?

    thx
    regards,
    stan

    ps: i am running fbsd 5.4

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  • Next message: Dan Ponte: "Re: lpt0 always busy"