$ getfacl /dev/bus/usb/001/004 getfacl: Removing leading '/' from absolute path names # file: dev/bus/usb/001/004 # owner: root # group: lp user::rw- group::rw- other::r--
That reminds me of an alternative way: sudo chmod o+w /dev/bus/usb/001/004 The problem with that (if I remember correctly) is that the position of the scanner may change if other USB devices are added or removed. And it's still not working out of the box. I don't seem able to scan using scanimage, whether I'm in the lp group or not or irrespective of file permissions. (Not sure about the proper syntax, though.) $ scanimage -d brother2:bus4 --format=png --verbose >testimage.png scanimage: open of device brother2:bus4 failed: Invalid argument $ scanimage -d 'brother2:bus4;dev3' --format=png --verbose >testimage.png scanimage: open of device brother2:bus4;dev3 failed: Invalid argument $ scanimage -d brother2:/dev/bus/usb/001/004 --format=png --verbose >testimage.png scanimage: open of device brother2:/dev/bus/usb/001/004 failed: Invalid argument -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to sane-backends in Ubuntu. https://bugs.launchpad.net/bugs/1890464 Title: Can not scan as user Status in sane-backends package in Ubuntu: Confirmed Bug description: # Description I can not scan as user using software like simple-scan or xsane. If I run xsane and simple-scan with sudo, I can use my scanner. It seems to be a permission issue # Step to reproduce 1. Start xsane or simple-scan as user 2. xsane and simple-scan fail to scan, "device is not connected" 3. Start xsane or simple-scan with sudo 4. It works, you can scan # Infos xubuntu 20.04 HP Deskjet 2540 All-in-One Printer antoine@Talos:~$ apt show sane-utils Package: sane-utils Version: 1.0.29-0ubuntu5 antoine@Talos:~$ apt show libsane Package: libsane Version: 1.0.29-0ubuntu5 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1890464/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
