On Mon, 21 Nov 2005, Steve Bangert wrote: > On Mon, 2005-11-21 at 12:11 -0500, Alan Stern wrote: > > On Mon, 21 Nov 2005, Steve Bangert wrote: > > > > > > In that run-on sentence you said: when you reboot you can't print, when > > > > > > With the printer power left on. > > > > Is that true every time or only some times? > > Only sometimes, no pattern that i can detect. > > > > Can you turn on USB verbose debugging in your kernel configuration > > (CONFIG_USB_DEBUG) and post the dmesg log showing what happens at bootup > > with the printer is already on and when you then try to print something? > > That should be your simple test case. > > > > Alan Stern > > BTW I should correct that the path to the printer device node > is /dev/usb/lp0 my previous email was incorrect, I see nothing printed > to dmesg if i "cat " a text file to the devices node. > > dmesg attached:
Let's be clear. There's no point looking at log messages for a working printer; the only thing that might help is log messages for when the printer stops working. So far you haven't said whether _any_ of the logs you've posted showed what happens when the printer isn't working. Note also that I know hardly anything about how the usblp driver works. You'd be much better off speaking with someone who understands more about it. About the only help I might be able to provide is to figure out what's going wrong when you boot with the printer already turned on and it doesn't work. When that happens, does the printer still show up in /proc/bus/usb/devices? Also, if you do have a usbmon trace for a situation where the printer wasn't working, seeing it might help. Alan Stern ------------------------------------------------------- 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-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
