问题简而言之，三星 ML-2545（激光打印机）的打印机在 ubuntu 版本 1510 上运行良好。我安装了新版本 1610，从系统设置对话框中选择了打印机，一切似乎都正常。我从对话框中测试打印，什么都没有。实际上并没有，打印机像正常一样唤醒（准备打印），不久之后，打印机又回到了睡眠状态。没有输出。在文本文件
pdf 文件上尝试过这个，结果完全相同。
我有一台多功能惠普打印机 HP Officejet Pro 8625，它已连接为网络打印机。使用相同的系统打印应用程序，加载驱动程序并显示在应用程序显示屏上。它可以完美地打印许多文件。所以我认为 cups 软件安装正确。
我从 cups 配置文件打开了调试，并在文件 error_log 中给出了大量输出，错误如下：HTTP_STATE_WAITING 因错误 32（管道损坏）而关闭。
在读取 cups 信息时，它应该获取文件，通过一些过滤器运行它（过滤器取决于打印的文件）和打印机驱动程序内的指令）。
The following lines seem ok to me::
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D [24/Jan/2017:20:30:36 -0700] cupsdIsAuthorized: username="root"
D [24/Jan/2017:20:30:36 -0700] [CGI] argv[0] = "/usr/lib/cups/daemon/cups-deviced"
D [24/Jan/2017:20:30:36 -0700] [CGI] argv[1] = "1"
D [24/Jan/2017:20:30:36 -0700] [CGI] argv[2] = "0"
D [24/Jan/2017:20:30:36 -0700] [CGI] argv[3] = "2"
D [24/Jan/2017:20:30:36 -0700] [CGI] argv[4] = "7"
D [24/Jan/2017:20:30:36 -0700] [CGI] argv[5] = "requested-attributes=all exclude-schemes=\'beh\',\'cups-pdf\',\'bluetooth\',\'dnssd\',\'http\',\'https\',\'lpd\',\'ncp\',\'parallel\',\'scsi\',\'smb\',\'snmp\',\'socket\'"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/cups/doc-root"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/spool/cups"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[8] = "HOME=/var/spool/cups/tmp"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[10] = "SERVER_ADMIN=root@coco"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[11] = "SOFTWARE=CUPS/2.2.0"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[12] = "TMPDIR=/var/spool/cups/tmp"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[13] = "USER=root"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[14] = "CUPS_MAX_MESSAGE=2047"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[15] = "CUPS_SERVER=/var/run/cups/cups.sock"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[16] = "CUPS_ENCRYPTION=IfRequested"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[17] = "IPP_PORT=631"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[18] = "AUTH_TYPE=PeerCred"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[19] = "LANG=en_US.UTF8"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[20] = "REDIRECT_STATUS=1"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[21] = "GATEWAY_INTERFACE=CGI/1.1"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[22] = "SERVER_NAME=localhost"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[23] = "SERVER_PORT=631"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[24] = "REMOTE_ADDR=localhost"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[25] = "REMOTE_HOST=localhost"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[26] = "SCRIPT_NAME=/"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[27] = "SCRIPT_FILENAME=/usr/share/cups/doc-root/"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[28] = "REMOTE_USER=root"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[29] = "SERVER_PROTOCOL=HTTP/1.1"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[30] = "HTTP_USER_AGENT=CUPS/2.2.0 (Linux 4.8.0-34-generic; x86_64) IPP/2.0"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[31] = "REQUEST_METHOD=POST"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[32] = "CONTENT_LENGTH=236"
D [24/Jan/2017:20:30:36 -0700] [CGI] envp[33] = "CONTENT_TYPE=application/ipp"
Following ubuntu recipe for debugging cups.
--------------------------------------------
DebuggingPrintingProblems
david@coco:~$
david@coco:~$ lsmod | grep usb
usblp 20480 0
snd_usb_audio 184320 1
snd_usbmidi_lib 32768 1 snd_usb_audio
snd_hwdep 16384 2 snd_hda_codec,snd_usb_audio
snd_pcm 110592 6 snd_hda_intel,snd_hda_codec,snd_usb_audio,snd_hda_core,snd_hda_codec_hdmi
snd_rawmidi 32768 2 snd_seq_midi,snd_usbmidi_lib
snd 86016 28 snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_usb_audio,snd_timer,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_usbmidi_lib,snd_seq_device,snd_hda_codec_realtek,snd_pcm
usbhid 53248 0
hid 118784 2 hid_generic,usbhid
usb_storage 73728 2 uas
david@coco:~$
david@coco:~$ tail -f /var/log/syslog
Jan 24 20:42:15 coco gvfsd[1659]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Jan 24 20:42:15 coco gvfsd[1659]: Unable to init server: Could not connect: Connection refused
Jan 24 20:42:15 coco gvfsd-recent[5086]: cannot open display:
Jan 24 20:42:15 coco gvfsd[1659]: dbus_mount_reply: Error from org.gtk.vfs.Mountable.mount(): Message recipient disconnected from message bus without replying
Jan 24 20:43:01 coco nautilus[2286]: Called "net usershare info" but it failed: Failed to execute child process "net" (No such file or directory)
Jan 24 20:44:41 coco unity-panel-ser[2179]: window_menu_model_new: assertion 'BAMF_IS_APPLICATION(app)' failed
Jan 24 20:44:41 coco unity-panel-ser[2179]: track_menus: assertion 'IS_WINDOW_MENU(menus)' failed
Jan 24 20:47:15 coco unity-panel-ser[2179]: menus_destroyed: assertion 'IS_WINDOW_MENU(wm)' failed
Jan 24 20:47:21 coco zeitgeist-datah[2648]: zeitgeist-datahub.vala:212: Error during inserting events: GDBus.Error:org.gnome.zeitgeist.EngineError.InvalidArgument: Incomplete event: interpretation, manifestation and actor are required
Jan 24 20:47:21 coco unity-panel-ser[2179]: menus_destroyed: assertion 'IS_WINDOW_MENU(wm)' failed
^C
david@coco:~$
david@coco:~$ lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 007: ID 04e8:3315 Samsung Electronics Co., Ltd ML-2540 Series Laser Printer
Bus 001 Device 006: ID 0480:d010 Toshiba America Inc External Disk 3TB
Bus 001 Device 003: ID 046d:0809 Logitech, Inc. Webcam Pro 9000
Bus 001 Device 005: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 001 Device 004: ID 062a:3621 Creative Labs
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
david@coco:~$
david@coco:~$ ls -l /dev/usb/lp* /dev/bus/usb/*/*
crw-rw-r-- 1 root root 189, 0 Jan 24 19:28 /dev/bus/usb/001/001
crw-rw-r-- 1 root root 189, 1 Jan 24 19:28 /dev/bus/usb/001/002
crw-rw-r-- 1 root root 189, 2 Jan 24 19:28 /dev/bus/usb/001/003
crw-rw-r-- 1 root root 189, 3 Jan 24 19:30 /dev/bus/usb/001/004
crw-rw-r-- 1 root root 189, 4 Jan 24 19:30 /dev/bus/usb/001/005
crw-rw-r-- 1 root root 189, 5 Jan 24 19:30 /dev/bus/usb/001/006
crw-rw-r-- 1 root lp 189, 6 Jan 24 20:30 /dev/bus/usb/001/007
crw-rw-r-- 1 root root 189, 128 Jan 24 19:28 /dev/bus/usb/002/001
crw-rw-r-- 1 root root 189, 256 Jan 24 19:28 /dev/bus/usb/003/001
crw-rw-r-- 1 root root 189, 384 Jan 24 19:28 /dev/bus/usb/004/001
crw-rw-r-- 1 root root 189, 512 Jan 24 19:28 /dev/bus/usb/005/001
crw-rw-r-- 1 root root 189, 640 Jan 24 19:28 /dev/bus/usb/006/001
crw-rw-r-- 1 root root 189, 768 Jan 24 19:28 /dev/bus/usb/007/001
crw-rw---- 1 root lp 180, 1 Jan 24 20:30 /dev/usb/lp1
david@coco:~$
david@coco:~$ sudo usb_printerid /dev/usb/lp0
[sudo] password for david:
Error: No such file or directory: can't open '/dev/usb/lp0'
david@coco:~$ sudo usb_printerid /dev/usb/lp1
GET_DEVICE_ID string:
MFG:Samsung;CMD:SPL,FWV,EXT;MDL:ML-2540 Series;CLS:PRINTER;STATUS:BUSY;
david@coco:~$
david@coco:~$ lpinfo -v
network beh
network https
serial serial:/dev/ttyS0?baud=115200
network ipp14
network socket
network ipps
network lpd
network http
network ipp
direct usb://Samsung/ML-2540%20Series?serial=Z6FJBKDC101165D.
direct hp
direct parallel:/dev/lp0
direct hpfax
david@coco:~$