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pixelbash
Asked: 2020-02-11 06:36:38 +0800 CST

健全：io/hpmud/musb.c 2101：无效的 usb_open：权限被拒绝

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我尝试按照本教程使用 SANE 设置网络扫描仪：Sane Daemon Tutorial

但是，如果我尝试在客户端上添加扫描仪，它就无法正常工作，无法访问 USB 端口。

Feb  9 18:55:47 druckserver systemd[1]: Started Scanner Service  (10.1.20.25:50515).
Feb  9 18:55:47 druckserver saned[2005]: saned (AF-indep+IPv6+systemd) from sane-backends 1.0.27 starting up
Feb  9 18:55:47 druckserver saned[2005]: check_host: access by remote host: ::ffff:10.1.20.25
Feb  9 18:55:47 druckserver systemd-resolved[1172]: Using degraded feature set (UDP) for DNS server 10.1.10.1.
Feb  9 18:55:52 druckserver saned[2005]: init: access granted to User@::ffff:10.1.20.25
Feb  9 18:55:57 druckserver saned[2005]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Feb  9 18:55:57 druckserver saned[2005]: message repeated 3 times: [ io/hpmud/musb.c 2101: Invalid usb_open: Permission denied]
Feb  9 18:55:57 druckserver saned[2005]: saned exiting
Feb  9 18:56:35 druckserver systemd[1]: Started Scanner Service (10.1.20.25:50531).
Feb  9 18:56:35 druckserver saned[2013]: saned (AF-indep+IPv6+systemd) from sane-backends 1.0.27 starting up
Feb  9 18:56:35 druckserver saned[2013]: check_host: access by remote host: ::ffff:10.1.20.25
Feb  9 18:56:35 druckserver saned[2013]: init: access granted to User@::ffff:10.1.20.25
Feb  9 18:56:41 druckserver saned[2013]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Feb  9 18:56:41 druckserver saned[2013]: message repeated 3 times: [ io/hpmud/musb.c 2101: Invalid usb_open: Permission denied]
Feb  9 18:56:41 druckserver saned[2013]: saned exiting

从这个系统日志中弹出的是这一行：

Feb  9 18:56:41 druckserver saned[2013]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied

我完全不知道如何解决这个问题。我需要将用户“理智”添加到特定组吗？

谢谢你的帮助。

permissions usb scanner sane

1 个回答

  1. Best Answer

    好的，我通过添加解决了它：

    RUN_AS_USER=saned

    到/etc/systemd/system/saned.socket 并将 sane-user 添加到 lp 组：

    sudo usermod -a -G lp saned
    • 2

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