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Talk:Printer Setup - Revision history
2026-05-03T17:02:25Z
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Richard Huang: 'mdev usbdev' and 'lpinfo -v' errors
2024-11-05T09:57:02Z
<p>'mdev usbdev' and 'lpinfo -v' errors</p>
<p><b>New page</b></p><div>~ # cat /etc/mdev.conf<br />
<br />
SUBSYSTEM=usb;PRODUCT=03f0/612a/0100; root:lpadmin 660 =/lib/mdev/usbdev<br />
<br />
SUBSYSTEM=usb;PRODUCT=04b8/118a; root:lp 755 =/lib/mdev/usbdev<br />
<br />
~ # mdev -s<br />
<br />
~ # ls -al /dev/bus/usb/001/010<br />
<br />
crw-rw---- 1 root 1018 189, 9 Nov 5 09:04 /dev/bus/usb/001/010<br />
<br />
~ # chown root:lp /dev/bus/usb/001/010<br />
<br />
~ # ls -al /dev/bus/usb/001/010<br />
<br />
crw-rw---- 1 root 1018 189, 9 Nov 5 09:04 /dev/bus/usb/001/010<br />
<br />
'''Why does the root:lp setting not work?'''<br />
<br />
~ # lpinfo -v<br />
<br />
network http<br />
network https<br />
network ipp<br />
network ipps<br />
network lpd<br />
network socket<br />
file cups-brf:/<br />
network beh<br />
direct hp<br />
<br />
~ # cat /var/log/cups/error_log<br />
<br />
E [05/Nov/2024:09:49:48 +0000] [CGI] ippfind (PID 15560) stopped with status 2!<br />
<br />
E [05/Nov/2024:09:49:48 +0000] [cups-deviced] PID 15542 (driverless) stopped with status 2!<br />
<br />
'''My USB printer is connected successfully and has a device node, but lpinfo -v still cannot find the USB printer device. Why?'''</div>
Richard Huang