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Full Discussion: usb - deleting (irq)
Top Forums UNIX for Dummies Questions & Answers usb - deleting (irq) Post 19731 by termiEEE on Tuesday 16th of April 2002 09:51:33 AM
Old 04-16-2002
usb - deleting (irq)

FreeBSD 4.5
i installed my sound drivers (which are onboard) with the following lines in my kernel
device pcm
options PNPBIOS

then cd /dev
sh MAKEDEV snd0

output from cat /dev/sndstat show the devicedriver (correct one)

ok this works nice
untill i enter my kde and want to play a song. There i see in the terminal ***WARNING **: oss_open(): Failed to open audio device (/dev/dsp): Device busy (i have my acces (xwr)to /dev/dsp and its links)
now, i thought it could be it's using the same irq as an other device and i did #dmesg pcm and say it is using the same irq (11) as USB A. That pissed me off Smilie i don't need USB but it's all onboard unfortunately so i tried to rebuild my kernel without the USB declaration in it but yet every time i reboot with new kernels, the USB is still present!. How can i really get those USB lines out of my kernel or perhaps even better; how can i chance irq for the devices?

i hope someone might know the answer because we've been looking on the problem with 3 people.

ow yeah, also tried it without the PNPBIOS option
 
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sane-find-scanner(1)					      General Commands Manual					      sane-find-scanner(1)

NAME
sane-find-scanner - find SCSI and USB scanners and their device files SYNOPSIS
sane-find-scanner [-h|-?] [-v] [-q] [-f] [devname] DESCRIPTION
sane-find-scanner is a command-line tool to find SCSI and some USB scanners and determine their Unix device files. It's part of the sane- backends package. For SCSI scanners, it checks the default generic SCSI device files (e.g., /dev/sg0) and /dev/scanner. The test is done by sending a SCSI inquiry command and looking for a device type of "scanner" or "processor" (some old HP scanners seem to send "processor"). So sane-find- scanner will find any SCSI scanner connected to those default device files even if it isn't supported by any SANE backend. For USB scanners, first the USB kernel scanner device files (e.g. /dev/usb/scanner0), /dev/usb/scanner, and /dev/usbscanner are tested. The files are opened and the vendor and device ids are determined if the operating system supports this feature. Currently USB scanners are only found this way if they are supported by the Linux scanner module or the FreeBSD or OpenBSD uscanner driver. After that test, sane- find-scanner tries to scan for USB devices found by the USB library libusb (if available). There is no special USB class for scanners, so the heuristics used to distinguish scanners from other USB devices is not perfect. sane-find-scanner will even find USB scanners, that are not supported by any SANE backend. sane-find-scanner won't find parallel port scanners, or scanners connected to proprietary ports. OPTIONS
-h, -? Prints a short usage message. -v Verbose output. If used once, sane-find-scanner shows every device name and the test result. If used twice, SCSI inquiry informa- tion and the USB device descriptors are also printed. -q Be quiet. Print only the devices, no comments. -f Force opening all explicitely given devices as SCSI and USB devices. That's useful if sane-find-scanner is wrong in determing the device type. devname Test device file "devname". No other devices are checked if devname is given. EXAMPLE
sane-find-scanner -v Check all SCSI and USB devices for available scanners and print a line for every device file. sane-find-scanner /dev/scanner Look for a (SCSI) scanner only at /dev/scanner and print the result. SEE ALSO
sane(7), sane-scsi(5), sane-usb(5), scanimage(1), xscanimage(1), xsane(1), sane-"backendname"(5) AUTHOR
Oliver Rauch, Henning Meier-Geinitz and others SUPPORTED PLATFORMS
USB support is limited to Linux (kernel, libusb), FreeBSD (kernel, libusb), NetBSD (libusb), OpenBSD (kernel, libusb). Detecting the vendor and device ids only works with Linux or libusb. SCSI support is available on Irix, EMX, Linux, Next, AIX, Solaris, FreeBSD, NetBSD, OpenBSD, and HP-UX. BUGS
No support for parallel port scanners yet. 15 Sep 2002 sane-find-scanner(1)

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