From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Date: Tue, 22 Nov 2005 03:08:44 +0000 Subject: Re: no /dev entry for printer when it is out of ink Message-Id: <43828BBC.9050003@kordik.net> MIME-Version: 1 Content-Type: multipart/mixed; boundary="------------060804020008020204040007" List-Id: References: <4381C39A.6080907@kordik.net> In-Reply-To: <4381C39A.6080907@kordik.net> To: linux-hotplug@vger.kernel.org This is a multi-part message in MIME format. --------------060804020008020204040007 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit The rule: BUS="usb", SYSFS{serial}="0HSLL0108041158030", NAME="lp0", SYMLINK="printers/EPC80" # find /sys/class/usb /sys/class/usb /sys/class/usb/lp0 /sys/class/usb/lp0/dev /sys/class/usb/lp0/driver /sys/class/usb/lp0/device /sys/class/usb/hiddev0 /sys/class/usb/hiddev0/dev /sys/class/usb/hiddev0/driver /sys/class/usb/hiddev0/device # udevtest /sys/class/usb/lp0 usb main: looking at device '/class/usb/lp0' from subsystem 'usb' main: opened class_dev->name='lp0' udev_rules_get_name: rule applied, 'lp0' becomes 'lp0' create_node: creating device node '/dev/lp0', major = '180', minor = '0', mode = '0660', uid = '0', gid = '7' /dev/lp0 is being created. So it looks like the generic udev rule is working. I can change my path to now point there. I don't understand why my rule quit working though. I tried escputil with it pointing to /dev/lp0 but it just times out. # udevinfo -q all -p /class/usb/lp0 no record for '/class/usb/lp0' in database I changed my printer to point /dev/lp0 but nothing happens when I print. I am just going to give in an replace all my color ink cartridges and see if that changes anything. Thanks again for the help. Mike Kay Sievers wrote: >On Mon, Nov 21, 2005 at 08:10:54PM -0500, Mike wrote: > > >>The rule I wrote is supposed to create /dev/printers/EPC80. It was >>creating this directory, up until recently. >> >> > >How does the rule look like? > > > >>udevmonitor output: >>UEVENT[1132621451.657266] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3 >>UEVENT[1132621451.661395] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3/2-1.3:1.0 >>UEVENT[1132621451.669255] add@/class/usb/lp0 >>UDEV [1132621454.756357] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3 >>UDEV [1132621456.822296] add@/class/usb/lp0 >>UDEV [1132621458.547985] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3/2-1.3:1.0 >> >> > > > >>I understand what you are saying about udev not communicating with the >>printer. It appears to me that the kernel is telling udev that the >>printer is connected but why isn't udev creating the device directory entry? >> >> > >Looks all fine. What does: > - find /sys/class/usb > > - udevtest /class/usb/lp0 usb > > - udevinfo -q all -p /class/usb/lp0 > >print, when the printer is connected? > >Kay > > >------------------------------------------------------- >This SF.Net email is sponsored by the JBoss Inc. Get Certified Today >Register for a JBoss Training Course. Free Certification Exam >for All Training Attendees Through End of 2005. For more info visit: >http://ads.osdn.com/?ad_id=7628&alloc_id=16845&op=click >_______________________________________________ >Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net >Linux-hotplug-devel@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel > > > --------------060804020008020204040007 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit The rule:
BUS="usb", SYSFS{serial}="0HSLL0108041158030", NAME="lp0", SYMLINK="printers/EPC80"

# find /sys/class/usb
/sys/class/usb
/sys/class/usb/lp0
/sys/class/usb/lp0/dev
/sys/class/usb/lp0/driver
/sys/class/usb/lp0/device
/sys/class/usb/hiddev0
/sys/class/usb/hiddev0/dev
/sys/class/usb/hiddev0/driver
/sys/class/usb/hiddev0/device

# udevtest /sys/class/usb/lp0 usb
main: looking at device '/class/usb/lp0' from subsystem 'usb'
main: opened class_dev->name='lp0'
udev_rules_get_name: rule applied, 'lp0' becomes 'lp0'
create_node: creating device node '/dev/lp0', major = '180', minor = '0', mode = '0660', uid = '0', gid = '7'

/dev/lp0 is being created. So it looks like the generic udev rule is working. I can change my path to now point there. I don't understand why my rule quit working though. I tried escputil with it pointing to /dev/lp0 but it just times out.

# udevinfo -q all -p /class/usb/lp0
no record for '/class/usb/lp0' in database

I changed my printer to point /dev/lp0 but nothing happens when I print. I am just going to give in an replace all my color ink cartridges and see if that changes anything.

Thanks again for the help.

Mike

Kay Sievers wrote:

On Mon, Nov 21, 2005 at 08:10:54PM -0500, Mike wrote:

The rule I wrote is supposed to create /dev/printers/EPC80. It was 
creating this directory, up until recently.


How does the rule look like?

udevmonitor output:
UEVENT[1132621451.657266] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3
UEVENT[1132621451.661395] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3/2-1.3:1.0
UEVENT[1132621451.669255] add@/class/usb/lp0
UDEV  [1132621454.756357] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3
UDEV  [1132621456.822296] add@/class/usb/lp0
UDEV  [1132621458.547985] add@/devices/pci0000:00/0000:00:02.1/usb2/2-1/2-1.3/2-1.3:1.0

I understand what you are saying about udev not communicating with the 
printer. It appears to me that the kernel is telling udev that the 
printer is connected but why isn't udev creating the device directory entry?


Looks all fine. What does:
 - find /sys/class/usb

 - udevtest /class/usb/lp0 usb

 - udevinfo -q all -p /class/usb/lp0

print, when the printer is connected?

Kay


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