私のスキャナーは Ubuntu 16 と 18.10 では動作していましたが、Ubuntu 22 では動作しません。ただし、印刷は問題ありません。私のスキャナーは RICOH MP 2014 です。以下はいくつかのコマンドの出力です。
deniz@deniz-To-be-filled-by-O-E-M:/etc/sane.d$ lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 012: ID 05ca:0452 Ricoh Co., Ltd RICOH MP 2014D
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 004 Device 005: ID 1c4f:0026 SiGma Micro Keyboard
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 002: ID 04b8:0066 Seiko Epson Corp. EPSON L1300 Series
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
deniz@deniz-To-be-filled-by-O-E-M:/etc/sane.d$ sane-find-scanner
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.
could not open USB device 0x1d6b/0x0001 at 005:001: Access denied (insufficient permissions)
found possible USB scanner (vendor=0x05ca [RICOH], product=0x0452 [RICOH MP 2014D]) at libusb:002:012
could not open USB device 0x1d6b/0x0002 at 002:001: Access denied (insufficient permissions)
could not open USB device 0x093a/0x2510 at 004:003: Access denied (insufficient permissions)
could not open USB device 0x1c4f/0x0026 at 004:005: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0001 at 004:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 001:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0001 at 003:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0003 at 007:001: Access denied (insufficient permissions)
could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
could not open USB device 0x1d6b/0x0002 at 006:001: Access denied (insufficient permissions)
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.
# Not checking for parallel port scanners.
# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.
# You may want to run this program as root to find all devices. Once you
# found the scanner devices, be sure to adjust access permissions as
# necessary.
deniz@deniz-To-be-filled-by-O-E-M:/etc/sane.d$ scanimage -L
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
答え1
USB 経由でスキャナーにアクセスする権限に問題があります:
003:001 に USB デバイス 0x1d6b/0x0001 を開けませんでした: アクセスが拒否されました (権限が不十分です)
見るこのリンクudevスキャナーが接続されたときにユーザー向けのルールを作成する方法について説明します。