san*_*lio 6 epson sane scanner
我的意思是在 Ubuntu 20.04 下安装扫描仪 Epson 3170 Photo。我在底部张贴了在检查我的 PC 是否找到扫描仪之前我采取的（通常）安装步骤。
然后，sane-find-scanner找到了扫描仪
$ sudo 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=0x06cb, product=0x009a) at libusb:001:005
found USB scanner (vendor=0x04b8 [EPSON], product=0x0116 [EPSON Scanner]) at libusb:001:009
# 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.
（注意：没有sudo我收到错误消息
could not open USB device 0x1d6b/0x0003 at 002:001: Access denied (insufficient permissions)
...
我的意思是稍后解决这个问题，如果我设法克服以下问题，除非这是问题的一部分，我猜不是）。
然后scanimage没找到扫描仪
$ sudo 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).
所以我编辑/etc/sane.d/dll.conf，添加epkowa（它没有列出）和评论epson2；epson已经评论过了。页面理智：外部后端（驱动程序）提到，3170由支持epkowa（“需要DFSG非自由ISCAN-插件-GT-9400海外版本的GT-9400UF的”）。
所以我尝试安装iscan-plugin-gt-9400. 它只能作为rpm，而不是deb. 寻找相关信息，我在 Ubuntu Feisty 上的EPSON USB 扫描仪和Epson Perfection 3170 照片扫描仪（又名 GT-9400）的[已解决] 成功图像扫描安装中找到，通过转换rpm->deb并安装它们（实际上是两个软件包）是使 3170 工作的唯一方法。我不确定这从发布这些帖子的时间起是否有所改变，但我决定尝试。
遵循上述说明，此外：
在文件中使用Architecture: i386 amd64而不是（否则
会抛出错误）。Architecture: i386, amd64debian/controldpkg-gencontrol: error: 'i386,' is not a legal architecture in list 'i386, amd64'
执行，export LD_LIBRARY_PATH="/usr/lib/x86_64-linux-gnu"
因为我收到了几个错误
$ fakeroot debian/rules binary
...
dpkg-shlibdeps: error: cannot find library libjpeg.so.62 needed by debian/iscan/usr/lib/sane/libsane-epkowa.so.1.0.15 (ELF format: 'elf32-i386' abi: '0101000300000000'; RPATH: '')
...
dpkg-shlibdeps: error: cannot continue due to the errors listed above
Note: libraries are not searched in other binary packages that do not have any shlibs or symbols file.
To help dpkg-shlibdeps find private libraries, you might need to use -l.
dh_shlibdeps: error: dpkg-shlibdeps -Tdebian/iscan.substvars debian/iscan/usr/lib/sane/libsane-epkowa.so.1.0.15 debian/iscan/usr/lib/libesmod.so.1.1.0 debian/iscan/usr/bin/iscan returned exit code 2
dh_shlibdeps: error: Aborting due to earlier error
make: [debian/rules:27: binary-arch] Error 2 (ignored)
...
我设法创建iscan_2.10.0-2_amd64.deb（预计会得到2.10.0-2而不是2.10.0-1？）和iscan-plugin-gt-9400_1.0.0-2_amd64.deb.
然后我安装了两个包
$ sudo gdebi iscan_2.10.0-2_amd64.deb
$ sudo gdebi iscan-plugin-gt-9400_1.0.0-2_amd64.deb
（我在这里覆盖了我之前创建的/etc/sane.d/epkowa.conf）。
然后我插入扫描仪并打开它。 我得到了错误
$ iscan
iscan: error while loading shared libraries: libjpeg.so.62: wrong ELF class: ELFCLASS64
我怎样才能继续让扫描仪工作？ （我预计一旦这个问题解决了，在它起作用之前会有一些障碍）
我做了什么：
sudo apt-get install sane sane-utils libsane xsane
下载 imagescan-bundle-ubuntu-19.10-3.62.0.x64.deb.tar.gz
展开上方和内部的存档imagescan-bundle-ubuntu-19.10-3.62.0.x64.deb执行./install.sh
将自己加入群组 lp
重启
核实
$ groups
user1 adm lp cdrom sudo dip plugdev lpadmin lxd sambashare vboxusers
将扫描仪插入 USB 并打开它。
有关的
小智 0
我在使用略有不同的Epson 3490时遇到了同样的问题：升级到 Ubuntu 20.04后，它被检测到但没有扫描。最终，解决方案变得非常简单 - 见下文。
我的原始sane-find-scanner输出：
# 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=0x04b8 [EPSON], product=0x0122 [EPSON Scanner]) at libusb:001:008
# 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.
并scanimage -L输出：
device `snapscan:libusb:001:008' is a EPSON EPSON Scanner flatbed scanner
GUI 扫描工具甚至可以找到扫描仪，但它们报告错误，例如could not connect to the scanner.
经过一番研究后发现，扫描仪由sane中的snapscan驱动程序支持，只是缺少固件文件。
这就是我安装固件的方式：
从 Epson 官方支持页面下载适用于您的扫描仪的 Linux 驱动程序包。就我而言，我正在寻找Epson 3490Linux 驱动程序。该包被命名为iscan-plugin-gt-f520-1.0.0-1.c2.i386.rpm. 下载之前必须接受许可证条件。
安装rpm：sudo apt install rpm
从 Epson 包中提取文件：rpm2cpio iscan-plugin-gt-f520-1.0.0-1.c2.i386.rpm >epson.cpio
从新创建的epson.cpio. 固件文件位于/usr/share/iscan/esfw52.bin
将固件文件复制到系统位置：sudo mkdir /usr/share/sane/snapscan ; sudo cp esfw52.bin /usr/share/sane/snapscan ; sudo chown root:root /usr/share/sane/snapscan/esfw52.bin
配置固件路径snapscan.conf：sudo vi /etc/sane.d/snapscan.conf
在配置文件的顶部输入路径。就我而言：
# Change to the fully qualified filename of your firmware file, if
# firmware upload is needed by the scanner
firmware /usr/share/sane/snapscan/esfw52.bin
此后扫描仪开始工作。
小智 -1
在您的情况下，您已经通过运行找到了扫描仪sudo sane-find-scanner：
found USB scanner (vendor=0x04b8 [EPSON], product=0x0116 [EPSON Scanner]) at libusb:001:009
（记下 中的值sane-find-scanner，稍后您将需要这些）
现在您已经有了此信息，请运行以下命令来检查权限：
sudo ls -l /dev/bus/usb/001/009
就我而言，权限是这样的：
0 crw-rw-r-- 1 root root 189, 386 Jun 25 06:34 ./001/009
这说明只有root用户和root组中的用户有读写权限。所有其他人都具有只读权限。
sudo chmod 0666 /dev/bus/usb/001/009
这为每个人提供了对该设备的读写权限。
然后再次运行ls命令：
sudo ls -l /dev/bus/usb/001/009
输出应验证权限是否已更改：
crw-rw-rw- 1 root root 189, 386 Jun 25 07:29 /dev/bus/usb/001/009
现在扫描仪应该可供所有用户使用，而不仅仅是 root 用户。
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