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Ubuntu 22.04 无法使用 Canon Pixma 进行扫描

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Ubuntu 22.04 无法使用 Canon Pixma 进行扫描

我有一台佳能 Pixma 打印机/扫描仪；第一次通过 USB 连接到我的 Ubuntu 22.04 笔记本电脑时，我不需要做任何特殊操作即可打印。

但是，当我尝试扫描时，xsane显示“没有可用的设备”；并且：

$ 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).

并且simple-scan（文档扫描仪）写道：“需要其他软件”，“您需要为扫描仪安装驱动程序软件”，其中“安装驱动程序软件”注明：“您似乎有一台佳能扫描仪，它受Pixma SANE 后端。请检查您的扫描仪是否受 SANE 支持...”

但是，我确实有：

$ ls -la /usr/lib/x86_64-linux-gnu/sane/libsane-pixma.so.1.1.1
-rw-r--r-- 1 root root 256344 Mar 27  2022 /usr/lib/x86_64-linux-gnu/sane/libsane-pixma.so.1.1.1

这可能是什么问题？

答案1

运行时发现了这一点：

$ 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 fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
could not open USB device 0x04a9/0x180b at 001:062: Access denied (insufficient permissions)
...
  # No USB scanners found. If you expected something different, make sure that
  # you have loaded a kernel driver for your USB host controller and have setup
  # the USB system correctly. See man sane-usb for details.
...
  # 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.

啊，如果我需要以 root 身份运行，sudo那么：

$ 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.

could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
found possible USB scanner (vendor=0x04a9 [Canon], product=0x180b [MG3000 series]) at libusb:001:062
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.
...

知道了：

$ sudo scanimage -L
Created directory: /var/lib/snmp/cert_indexes
device `pixma:04A9180B_62FF57' is a CANON Canon PIXMA MG3000 Series multi-function peripheral

...现在也sudo simple-scan可以工作了，sudo xsane尽管我确实收到了一条很大的警告，警告我不要xsane运行sudo...

所以我尝试通过

sudo nano /lib/udev/rules.d/60-libsane1.rules  # file existed for me, so does /lib/udev/rules.d/99-libsane1.rules

添加

# Canon Pixma
ATTRS{idVendor}=="04a9", MODE="0666", GROUP="scanner", ENV{libsane_matched}="yes"

... 接近LABEL="libsane_rules_end"，做了

sudo adduser myusername lp
sudo adduser myusername scanner

...并改变了

$ cat /etc/sane.d/canon.conf
#canon.conf
scsi CANON IX
usb 0x04a9 0x180b

和

sudo udevadm control --reload-rules && sudo udevadm trigger

...但如果没有 sudo 我仍然无法使用它。

哦，好吧——这就是我所缺少的：https://unix.stackexchange.com/questions/654731/scanner-available-only-with-sudo

下次您登录时，您的uid将能够使用扫描仪。

所以在经历了这一切之后，你必须 登出进而重新登录和只有这样无需scanimage -L​sudo

操电脑，操扫描仪，操佳能，操 Ubuntu，操 Windows，操 Mac OSX——这真是浪费时间，只是纯粹的熵和狗屎......我非常讨厌这种情况；因此这个操蛋的世界应该被毁灭——希望现在正在开发的所有那些狗屎人工智能都能尽快发射所有核弹，结束这种狗屎的存在

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