以下是 lsusb 和 sane-find-scanner 的输出：
janos@AndrasXubuntu:~/Desktop$ 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.
found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x1205 [hp scanjet scanner]) at libusb:002:002
could not open USB device 0x1d6b/0x0001 at 002:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0001 at 001:001: 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.
janos@AndrasXubuntu:~/Desktop$ scanimage -L
[hp5590] hp5590_get_status: USB-in-USB: got non-zero device status (status 12)
[hp5590] hp5590_init_scanner: scanner reports non-zero status: Device busy
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).
janos@AndrasXubuntu:~/Desktop$
附加信息：
（1）gscan2pdf有xsane同样的问题 - 找不到设备
（2）当我使用 xubuntu 12.04 扫描仪时
（3）如果我将笔记本电脑（与台式机一样是 Ubuntu 16.04）连接到笔记本电脑是 64 位，台式机是 32 位) 然后就可以在笔记本电脑上进行简单的扫描了。
Sudo 输出，请参阅下面 janos 的评论
janos@AndrasXubuntu:~/Desktop$ sudo sane-find-scanner
[sudo] password for janos:
# 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.
found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x1205 [hp scanjet scanner]) at libusb:002:002
# 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.
janos@AndrasXubuntu:~/Desktop$ sudo scanimage -L
[hp5590] hp5590_get_status: USB-in-USB: got non-zero device status (status 12)
[hp5590] hp5590_init_scanner: scanner reports non-zero status: Device busy
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).
janos@AndrasXubuntu:~/Desktop$
lsusb 的输出（抱歉，我第一次提出这个问题时就想把它包括在内）
janos@AndrasXubuntu:~/Desktop$ sudo lsusb
[sudo] password for janos:
Bus 002 Device 002: ID 03f0:1205 Hewlett-Packard ScanJet 4500C/5550C
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
janos@AndrasXubuntu:~/Desktop$
请注意，如果我将扫描仪插入不同的 USB 插座（例如，总线 001 中的插座），lsusb会在那里找到它，但简单扫描仍然不起作用。
附加信息：我可以将这台机器双启动到旧版 Fedora-3。扫描仪在那里工作。但是，scanimage -L找不到它，lsusb但sane-find-scanner确实找到了。请参见 Fedora-3 启动时终端的以下输出。
[apu@andraslinux ~]$ su -c "scanimage -L"
Password:
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).
[apu@andraslinux ~]$ /sbin/lsusb
Bus 002 Device 002: ID 03f0:1205 Hewlett-Packard
Bus 002 Device 001: ID 1d6b:0001
Bus 001 Device 001: ID 1d6b:0001
[apu@andraslinux ~]$ sane-find-scanner
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a SCSI driver for your SCSI adapter.
found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x1205 [hp scanjet scanner]) at libusb:002:002
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.
是否可能导致libusbFC3 能够运行扫描仪但 Ubuntu 16.04 无法使用libusb？
正如我之前提到的，扫描仪在 12.04 上可以工作，但在升级到 14.04 后停止工作，现在升级到 16.04
有关 libusb 的其他信息：
32 位台式机（扫描仪不工作）和 64 位笔记本电脑（扫描仪工作）的终端输出相同，如下所示：
janos@acerlinux:~/Desktop$ dpkg -l libusb
dpkg-query: no packages found matching libusb
事实上，我刚刚检查过我的 64 位笔记本电脑没有 libsane-dev，并再次检查，如果连接到笔记本电脑，扫描仪就可以工作。
从以下评论中复制的附加信息：
/etc/sane.d/dll.conf没问题，hp5590 没有被注释；然后我/etc/sane.d/hp5400.conf通过添加正确的 usb 线进行了修改；扫描仪仍然无法工作，即使scanimage -L检测到它，但报告为繁忙。请参见此处：
janos@AndrasXubuntu:~/Desktop$ sudo scanimage -L
[sudo] password for janos:
[hp5590] hp5590_get_status: USB-in-USB: got non-zero device status (status 12)
[hp5590] hp5590_init_scanner: scanner reports non-zero status: Device busy
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).
janos@AndrasXubuntu:~/Desktop$
还有一件有趣的事情，该/etc/sane.d/hp5400.conf文件在 64 位笔记本电脑和 32 位 Fc3 台式机上是相同的，无需编辑添加 5590 usb 线，但自从 12.04 升级以来，两者都可以与扫描仪一起使用，除了 32 位 Ubuntu 台式机。
因此，我认为最大的问题是“为什么 32 位 16.04 Ubuntu 桌面报告设备繁忙？”
附加信息-修改了 libusb 的输出，这次带有星号：
32位桌面上的 libusb
janos@AndrasXubuntu:~/Desktop$ dpkg -l libusb*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-============-============-=================================
ii libusb-0.1-4:i 2:0.1.12-28 i386 userspace USB programming library
ii libusb-1.0-0:i 2:1.0.20-1 i386 userspace USB programming library
un libusb-dev <none> <none> (no description available)
un libusbmuxd-too <none> <none> (no description available)
ii libusbmuxd4:i3 1.0.10-2ubun i386 USB multiplexor daemon for iPhone
janos@AndrasXubuntu:~/Desktop$
64位笔记本电脑上的libusb：
janos@acerlinux:~/Desktop$ dpkg -l libusb*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-============-============-=================================
ii libusb-0.1-4:a 2:0.1.12-28 amd64 userspace USB programming library
ii libusb-1.0-0:a 2:1.0.20-1 amd64 userspace USB programming library
ii libusb-1.0-0:i 2:1.0.20-1 i386 userspace USB programming library
un libusb-dev <none> <none> (no description available)
un libusbmuxd-too <none> <none> (no description available)
ii libusbmuxd4:am 1.0.10-2ubun amd64 USB multiplexor daemon for iPhone
janos@acerlinux:~/Desktop$
附加信息：
根据我对 FC3 和 man sane-usb 的说明，必须安装 usbfs 才能使扫描仪工作。因此，在我的 FC3 中，我在 fstab 中有一行包含
none /proc/bus。因此，我查看了 32 位 Ubuntu 和 64 位 Ubuntu 上安装的文件系统。参见以下比较：
32 位 Ubuntudf -ha
janos@AndrasXubuntu:~/Desktop$ sudo df -ha
Filesystem Size Used Avail Use% Mounted on
sysfs 0 0 0 - /sys
proc 0 0 0 - /proc
udev 482M 0 482M 0% /dev
devpts 0 0 0 - /dev/pts
tmpfs 100M 5.1M 95M 6% /run
/dev/sda1 9.1G 4.0G 4.7G 47% /
securityfs 0 0 0 - /sys/kernel/security
tmpfs 500M 108K 500M 1% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 500M 0 500M 0% /sys/fs/cgroup
cgroup 0 0 0 - /sys/fs/cgroup/systemd
pstore 0 0 0 - /sys/fs/pstore
cgroup 0 0 0 - /sys/fs/cgroup/blkio
cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct
cgroup 0 0 0 - /sys/fs/cgroup/cpuset
cgroup 0 0 0 - /sys/fs/cgroup/net_cls,net_prio
cgroup 0 0 0 - /sys/fs/cgroup/freezer
cgroup 0 0 0 - /sys/fs/cgroup/memory
cgroup 0 0 0 - /sys/fs/cgroup/hugetlb
cgroup 0 0 0 - /sys/fs/cgroup/pids
cgroup 0 0 0 - /sys/fs/cgroup/perf_event
cgroup 0 0 0 - /sys/fs/cgroup/devices
systemd-1 0 0 0 - /proc/sys/fs/binfmt_misc
hugetlbfs 0 0 0 - /dev/hugepages
debugfs 0 0 0 - /sys/kernel/debug
mqueue 0 0 0 - /dev/mqueue
fusectl 0 0 0 - /sys/fs/fuse/connections
tmpfs 100M 4.0K 100M 1% /run/user/108
tmpfs 100M 36K 100M 1% /run/user/1000
gvfsd-fuse 0.0K 0.0K 0.0K - /run/user/1000/gvfs
janos@AndrasXubuntu:~/Desktop$
比较 FC3（扫描仪工作的地方）和 Ubuntu 上的 32 位桌面文件
janos@AndrasXubuntu:/media/janos/_1/etc/sane.d$ diff hp5400.conf /etc/sane.d/hp5400.conf
14c14
< #/dev/usb/scanner0
---
> #/dev/usbscanner
janos@AndrasXubuntu:/media/janos/_1/etc/sane.d$
64 位 Ubuntudf -ha
janos@acerlinux:~/Desktop$ sudo df -ha
[sudo] password for janos:
Filesystem Size Used Avail Use% Mounted on
sysfs 0 0 0 - /sys
proc 0 0 0 - /proc
udev 1.4G 0 1.4G 0% /dev
devpts 0 0 0 - /dev/pts
tmpfs 276M 5.0M 271M 2% /run
/dev/sda5 17G 7.1G 8.5G 46% /
securityfs 0 0 0 - /sys/kernel/security
tmpfs 1.4G 260K 1.4G 1% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 1.4G 0 1.4G 0% /sys/fs/cgroup
cgroup 0 0 0 - /sys/fs/cgroup/systemd
pstore 0 0 0 - /sys/fs/pstore
cgroup 0 0 0 - /sys/fs/cgroup/hugetlb
cgroup 0 0 0 - /sys/fs/cgroup/cpuset
cgroup 0 0 0 - /sys/fs/cgroup/pids
cgroup 0 0 0 - /sys/fs/cgroup/freezer
cgroup 0 0 0 - /sys/fs/cgroup/memory
cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct
cgroup 0 0 0 - /sys/fs/cgroup/devices
cgroup 0 0 0 - /sys/fs/cgroup/blkio
cgroup 0 0 0 - /sys/fs/cgroup/net_cls,net_prio
cgroup 0 0 0 - /sys/fs/cgroup/perf_event
systemd-1 - - - - /proc/sys/fs/binfmt_misc
hugetlbfs 0 0 0 - /dev/hugepages
mqueue 0 0 0 - /dev/mqueue
debugfs 0 0 0 - /sys/kernel/debug
fusectl 0 0 0 - /sys/fs/fuse/connections
/dev/sda7 3.0G 1.3G 1.7G 44% /mnt/DOS_E
/dev/sda8 22G 6.1G 15G 30% /mnt/save
binfmt_misc 0 0 0 - /proc/sys/fs/binfmt_misc
tmpfs 276M 44K 276M 1% /run/user/1000
gvfsd-fuse 0.0K 0.0K 0.0K - /run/user/1000/gvfs
janos@acerlinux:~/Desktop$
FC3df -ha
Filesystem Size Used Avail Use% Mounted on
/dev/hdb1 18G 7.0G 11G 41% /
none 0 0 0 - /proc
none 0 0 0 - /sys
none 0 0 0 - /dev/pts
none 506M 0 506M 0% /dev/shm
none 0 0 0 - /proc/bus/usb
none 0 0 0 - /proc/sys/fs/binfmt_misc
none 0 0 0 - /var/named/chroot/proc
FC3ls | grep hp5400.conf
hp5400.conf
FC3ls | grep hp 5550.conf没有输出。
因此，需要注意以下几点：（a）FC3 和 64 位 Ubuntu 笔记本电脑都没有 hp5550.conf 文件，但两台机器上的扫描仪都可以工作；（b）32 位和 64 位 Ubuntu 都没有挂载 usbfs，但扫描仪可以在 64 位 Ubuntu 上运行，但在 32 位 Ubuntu 上不能运行。
关于尝试建议的软件包的附加信息：
janos@AndrasXubuntu:~/Desktop$ sudo dpkg -i libsane-dev_1.0.25+git20150528-1ubuntu2.16.04.1_i386.deb
[sudo] password for janos:
(Reading database ... 196333 files and directories currently installed.)
Preparing to unpack libsane-dev_1.0.25+git20150528-1ubuntu2.16.04.1_i386.deb ...
Unpacking libsane-dev (1.0.25+git20150528-1ubuntu2.16.04.1) over (1.0.25+git20150528-1ubuntu2) ...
dpkg: dependency problems prevent configuration of libsane-dev:
libsane-dev depends on libsane (= 1.0.25+git20150528-1ubuntu2.16.04.1); however:
Version of libsane:i386 on system is 1.0.25+git20150528-1ubuntu2.
dpkg: error processing package libsane-dev (--install):
dependency problems - leaving unconfigured
Processing triggers for doc-base (0.10.7) ...
Processing 1 changed doc-base file...
Processing triggers for man-db (2.7.5-1) ...
Errors were encountered while processing:
libsane-dev
janos@AndrasXubuntu:~/Desktop$ sudo dpkg -i libsane_1.0.25+git20150528-1ubuntu2.16.04.1_i386.deb
[sudo] password for janos:
(Reading database ... 196333 files and directories currently installed.)
Preparing to unpack libsane_1.0.25+git20150528-1ubuntu2.16.04.1_i386.deb ...
Unpacking libsane:i386 (1.0.25+git20150528-1ubuntu2.16.04.1) over (1.0.25+git20150528-1ubuntu2) ...
dpkg: dependency problems prevent configuration of libsane:i386:
libsane:i386 depends on libsane-common (= 1.0.25+git20150528-1ubuntu2.16.04.1); however:
Version of libsane-common on system is 1.0.25+git20150528-1ubuntu2.
dpkg: error processing package libsane:i386 (--install):
dependency problems - leaving unconfigured
Processing triggers for libc-bin (2.23-0ubuntu7) ...
Errors were encountered while processing:
libsane:i386
janos@AndrasXubuntu:~/Desktop$
答案1
我没有那个特定的扫描仪可供测试，但研究表明，特定型号需要使用sane-hp5590 后端由包提供libsane-dev与 sane 一起运行。安装该软件包应该可以解决您的问题并允许您正常配置 sane。
笔记：这我可以在这个后端找到的第一个文档表明它最初是为 64 位系统设计的，基于它所放置的文件 /usr/lib64/sane/32 位版本有相同的文件，/usr/lib/i386-linux-gnu/sane/因此看起来它受支持。但是我无法确认或否认这一点，因为我没有可用于测试的硬件。这可能很快就会成为一个没有实际意义的问题，因为 32 位支持即将消失，这一点已经变得非常明显。请参阅故事在这里和一个32 位处理器列表已经删除
有时扫描仪会得到默认未启用的合理后端的支持。启用它通常可以使事情正常进行。
检查以确保您的扫描仪受支持这里。在您的情况下，4500C 被列为完全支持，而 5500C 被列为未经测试。
/etc/sane.d/dll.conf通过编辑并取消注释或添加该行来启用适当的后端hp5590（如果有疑问，请检查其他 Linux 上上述文件中的工作配置以获取线索）完成编辑任务后，保存并关闭文件。
继续运行该命令sane-find-scanner（如果这不起作用，则可能是权限问题，在这种情况下，您可能会得到不同的结果sudo sane-find-scanner
该命令的输出将如下所示：
# 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.
found USB scanner (vendor=0x01aa [EXAMPLE], product=0x0001 [EXAMPLE SCANNER]) at libusb:001:003
# 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.
现在将扫描仪添加到后端配置文件：
每个合理的后端都有自己的配置文件。
下一步我们需要 sane-find-scanner 的结果。你可以忽略以井号开头的所有内容，但重要的是这一行：
在 libusb:001:003 处找到 USB 扫描仪（供应商=0x01aa [示例]，产品=0x0001 [示例扫描仪]）
我们需要将这两个值添加到扫描仪的后端，在本例中为示例后端。为此，使用以下命令以 root 身份启动 gedit：
gksudo gedit /etc/sane.d/hp5590.conf（通过检查来仔细检查conf文件的拼写是否符合你的情况ls /etc/sane.d）
- 找到以下行：
usb
在其后我们需要添加一行，其中包含单词“usb”，后面跟着供应商编号和使用 scanimage -L 命令获得的产品编号。该行应类似于以下内容：
usb 0x01aa 0x0001或者根据您的情况usb 03f0:1205（根据您的lsusb输出。）
编辑：如果其他方法都失败了，你可以尝试为您的版本推荐 32 位 libsane-dev 包。然而，这是否会成功可能取决于这个错误我建议您订阅它，以便开发人员可以最好地优先考虑他们的工作。
资料来源：
http://manpages.ubuntu.com/manpages/xenial/man5/sane-hp.5.html
http://www.sane-project.org/man/sane-hp5590.5.html
http://packages.ubuntu.com/xenial/amd64/libsane-dev/filelist
答案2
我在 Debian 上使用 HP 扫描仪 (HP DeskJet 1050A) 时也遇到了同样的问题。修复这个问题的方法是
sudo adduser <user> lpsudo apt-get install libsane-hpaio- 注销并重新登录（获取
lp权限）