Hardware :: Echo > /dev/lp0 Hangs When No Printer Is Connected?
Mar 17, 2010
I need to output a byte to LPT port. For this there's an option to program I/O ports directly (with ioperm & outb), but only if LPT port is a standard PC one (ports 0x378, 0x278, etc.). But i need a 'portable' way of doing this, i.e. which would also work on such interfaces as USB2LPT. I guess these adaptors will also have /dev/lp[0-9]* interface (am i right?). Here's what i get currently:$ echo 1 > /dev/lp0^CI.e. i have to use Ctrl+C because 'echo' never exits. When i had a printer connected to LPT, this did work
I have a canon printer which was working so far. After my latest upgrade its giving errors saying "Printer not connected -- Check your connection" Fortunately I had a backup of my root before the upgrade and one difference I see is that on the new system theres no /dev/usb/lp0 which there is on the old one. So how do I make it? Or should I use the /dev/lp0? Note they are different:
[Code].....
So (naturally) when I tried to make a softlink from /dev/usb/lp0 to /dev/lp0 it did not work.
is it possible to install a netwerk printer, while not connected to the netwerk where the printer is?I installed opensuse on my sisters desktop and I want to install the printer that she and my parents are using at home. Is this possible?De printer is in a windows workgroup and shared. De name of the workgroup is DEROON and the name f the computer the printer is connected to is Nico
I've configured an FC14 installation and have been able to do everything over the internet as needed. Then I added a VPN client and can connect to the VPN. I can't ping a server I know is available on the VPN. Ping hangs, not getting any response (including timing out).My other Linux box (running all of the same software) can get to the server on the other side of the VPN so I know everything is okay except for my configuration.I had the same problem when I originally configured the other system and remember that I had to manually edit some setting in a file but don't remember what it was.
Basically the situation is that the boot hangs if my USB KVM switch is connected. The keyboard works fine through the KVM switch to access the BIOS menu and in the grub2 menu, but as soon as it starts to boot, I get a black screen with a white cursor on top which never goes anywhere.The weird part is that if I disconnect the KVM and reboot, it gets past this point and I can reconnect the KVM and both the mouse and keyboard work normally.However, even if I plug the keyboard in directly but leave the KVM plugged in, the boot hangs. Something about the fact that the KVM is connected (rather than not detecting keyboard) is causing the boot to stall.
The even weirder part is that this worked fine on my previous build, which was 8.04 upgraded sequentially to 9.10. But my system drive died so I rebuilt directly from 9.10 ISO and now this does work. I have tried downgraded to grub .97, I have tried switching between server and generic kernels.This seems to be the same issue reported in[URL]
My home/small office LAN has network connected printers. Some use wire. Some are wireless. Each has a unique static, private IP address on my LAN. Each workstation has a primary printer, but all of the printers are visible and used by all family and office folks. The symptoms:boot a workstation, connect to LAN printer,
start a queue print things suspend or shutdown the workstation resume or reboot the workstation various troubles
Even if there are no jobs queued (everything printed already) at the time of suspend, I must routinely "thump" the printer or workstation of both to make printing work again. I am concerned with Ubuntu Jaunty towers and laptops. All of the printers are HP something with a built-in wired or wireless ethernet connection. I'm not concerned with win-dose workstations on the LAN (unless interaction over there is causing other grief)!! For example, a win-dose spooler fails to end a print job properly and let go so that others may use the resource.
In the words of Snow White, "someday my Prints will come." ~~~ 0;-/ Dan __________ "Thump" -- a technical term for various acts including but not limited to reset, restart, power cycle, reboot, physical violence, etc. intended to correct bad behavior of computer system components. Not to be confused with "Swat" where one strikes the side or top of a monitor to correct problems with the displayed image.
Main PC runs Win7 with Epson printer connected (not wireless)...I'm running Win7/Ubuntu 11.04 on my laptop getting internet wirelessly. When in Win7 on my laptop I can 'see' the printer that's connected to my main pc and print to it but when I switch to ubuntu I 'see' the main pc on my network but not the printer...
I am running F15 Beta i686 (Gnome3) Desktop on a dual-core, 4 Mb DDR2 system. I already installed hplip and hpijs drivers and connected HP LaserJet 5MP printer to the parallel port of my PC. Set up was by running "system-config-printer", adding device URI=parallel:/dev/lp0, and selecting approriate driver (CUPS+Gutenprint (en) for the printer. However, when I chose to print a test page, nothing came out and the printer window says the printer is not connected. This is even though I can print from Fedora14 installed on the same PC.
I have a rather ancient HP LaserJet printer that was working fine in fedora 14, but when I upgraded to Fedora 15, I can no longer get this printer to work. The printer's front panel reads "LaserJet 5P", but when I print out a test page, it's a "LaserJet 5MP". The printer is connected to my computer's parallel port, and it's capable of understanding PostScript, and I usually don't have any problems printing to it under various operating systems.
The following error comes and goes under the KDE print manager: "Printer 'LaserJet_5P' may not be connected." CUPS reports the following printer state: "Processing - Printer not connected; will retry in 30 seconds..."
I have double-checked that my printer is indeed powered on and connected. And the following lines appear in the error log: W [29/May/2011:18:03:02 -0700] no access to /System/Library/ColorSync/Profiles/sRGB Profile.icc W [29/May/2011:18:03:02 -0700] no access to /System/Library/ColorSync/Profiles/sRGB Profile.icc W [29/May/2011:18:03:02 -0700] no access to /System/Library/ColorSync/Profiles/Generic CMYK Profile.icc W [29/May/2011:18:03:02 -0700] failed to CreateProfile: org.freedesktop.ColorManager.Failed:profile object path '/org/freedesktop/ColorManager/profiles/LaserJet_5P_Gray__' already exists .....
The first three warnings are regarding file paths that one would expect in an Apple OSX system. The "bad request" error is troublesome, because it indicates that either my browser or some configuration software on my system is sending garbage to CUPS. The last two errors occurred when I tried to use the KDE print configuration tool, which was not smart enough to ask me for the root password, which CUPS needs. By the way, the device URI is "parallel:/dev/lp0". Is this still the correct URI?
I just installed a Brothers HL2170W printer on my desktop which is running Ubuntu 1004 I had no problem with the install and it is working. The problem is when I send a page to print it takes 5 minutes before it prints. if this is normal or if there is a fix. I have the printer connected with a USB cable.
I am using a Toshiba Satellite with an HP Officejet7410. I installed the printer last night, printed a test page and went to bed smiling. This morning, I try to print and nothing. Fedora see the printer, but keeps saying it is paused or is not connected. The test page printed out the following.
Officejet-7400-series HP Officejet 7400 series franks-lappy HP Officejet 7400 series, hpcups 3.11.5 8.50 x 11 inches 0.12 x 0.12 to 8.38 x 10.88 inches 3 x 3 to 213 x276 millimeters hp-officejet 7400_series, ppd hpcups 3.11.5 This page was produced by CUPS 1.4.6
a newbe one, but its if my fifth try in using ubuntu for working with Architecture, so... my problem is...I have a plotter (xerox 2230ij) connected in a print server, i tryed to connect in lpt1 port and was sucessful with HP 750 plus driver... so.. yay! but my original intend is to connect in print server and all the computers (windows/ubuntu) use that.But when i connect in PS, i cant see the plotter, but i can acess the PS (Dlink)so.. what i have to do, to make thing working well? and i have virtualbox with windows XP, can XP acess that plotter as well?here a small scheme of my connections...
I want to set up a home / file / torrent / web / print server at home. I am using a dell optiplex gx240 and my printer is a Epson dx8400. I was wondering if it is possible to use the printer and scanner connected to the server. Has anyone done this before? I hope to print from any computer in my house. Scanning would probably be the hardest part I guess.
I've run into issue on my Linux machine (running 10.04) when I want to print. When I go to System>Administration> Printing, I cannot find the printer connected to the network through my dad's computer, running OS X 10.7.
I currently cannot get my printer to work (nothing ever get's printed) even though CUPS seems to be correctly configured and reports all jobs as "completed" without any errors. As I know that my printer works (I can print from my laptop on it) I currenty suspect my new PC's parallel port to maybe have a hardware issue. My question is now is there any way to check the parallel port?
Here are some details: from dmesg: lp0: using parport0 (interrupt-driven). from lsmod: parport 27954 3 ppdev,lp,parport_pc
In the BIOS the mode is set to EPP. So as far I can see (I am not really an expert) the kernel-modules are there, /dev/lp0 exists and has the proper permissions. Yet doing 'echo -en " Hello f" >/dev/lp0' does not produce any Putout on my printer that is connected via the parallel port.
Linux and I have trying to get my Fedora 15 (x86 64bit) on my laptop to print to an Epson Stylus NX515 printer/scanner. I have the printer connected to a router through a wireless connection. I have other computers that are on the network that are Windows based and they of course are printing/Scanning just fine. The printer is located in a different room. I have been searching for a solution but non that explains how to install a printer driver for one that is connected to a router wirelessly.
I have a network printer directly connected via ethernet cable to an Ubuntu netbook, but pinging the printer fails, giving "Host Unreachable". The network light on the ethernet socket is lit green, and there is nothing else cable-connected to the network - just a simple cable connection between the netbook ethernet socket and the Network printer (a HP Laserjet 4200n). Ping works fine if I plug the cable into a different machine (a Win XP box) and ping from there, so it's not a cable or IP address problem.
This sounds simple enough and should work, but I'm stumped. Clues, anyone?
I had previously been having loads of problems getting my wireless printer to work with Linux [http://ubuntuforums.org/showthread.php?t=1453697]. Everything is working fine now. However, something that confused me is that whenever I tried to ping the printer _before_ I got it working, it would fail with a _different_ IP address. That is, the command 'ping x.y.z.3' would fail with a message saying it was unable to contact 'x.y.z.2'
Now I am looking at my router - for something unrelated - and I've noticed that rogue IP address shows up in the list of connected devices. It has a MAC address but for the device name it lists "<unknown>". Should I be concerned about this? how to figure out what this device is?
My printer had been working in 10.04 for a couple months. It still does work when I boot from a 9.04 live CD, so I know it really is "connected" hardware-wise.
how this is pulled off - when you click "Print" on a computer, and the result comes out of a printer connected to some other computer on a LAN, what goes on? I would like to know this at the deep *hacker* level, and also how to do this in Linux alone, i.e. without Samba or whatever - that is, without Windoze.
I've bought a HP Photosmart printer, HP Photosmart wireless e-All-in-One printer - B110a and i've got a problem installing it properly. I'm using Debian 6.0 Squeeze. When i connect the printer, Debian doesn't recognize my printer as the Photosmart B109 printer for unknown reason. When i go to the site of HP and search for a driver, it directs me to this site:I've downloaded that latest hplip file as a .run file and installed it. My printer is recognized proparly, but when i try to print a colored image, it comes out black/white. Something is not crrect. Does anyone recognize this problem with this type HP printer?
I am trying to install Ubuntu 10.10 x64 on a HP Pavilion p6565uk.
My PC is x64 compatible, although ubuntu will not install.
I don't get to any gui, it says ubuntu will continue install in 5 seconds, at 0, nothing happens. The CPU light is flashing, but nothing happens.
After about 10 minutes, it reboots, but when the HP splash screen shows (Before the boot selection screen) it just hangs. I have to do a hard shutdown to boot back up.
I am trying to echo some value using awk, and for reading the file i am using cat command. If there no space in the file content then the following script result correctly.
console: # cat 1 one;two;three; four;five;six;
[code]....
In case any space is there in the file 1 then i am facing the problem in the output value
And it worked, terminal 1 printed: "test". But if the pipe is bi-directionnal ( as terminal were echoed back what user was typing), I was expecting to be able to go the other way around:
