General :: Pipe Screen To Video Device (Udev)
Mar 20, 2010Is there any way to pipe video from the screen to a video device that can be used as if it came from a webcam? I assume it uses udev somehow...
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General :: Preventing Udev From Creating Device Entries Under /dev
May 21, 2010I need to prevent udev from creating the /dev/v4l/by-path/* and /dev/v4l/by-id/* files upon connecting my webcam. The problem is that Kopete doesn't want to display the video if these files are present. It works fine if I remove them, but I'd rather not have them created in the first place, since they seem to be completely useless anyway.
View 4 Replies View RelatedGeneral :: How Udev Rules Work To Create Device Files
Jun 2, 2010how udev rules work to create device files. Following is what I did for that: Up on plugging in my phone (sony w800i), I am getting a device file 'devcdc-wdm0' created. I just tried to figure out the rule which is responsible for the creation of this particular file.
I searched in 'etcudev ules.d' and 'libudev ules.d' for the string 'cdc-wdm' to find that rule. But I am not getting any hits in that search. Could any one help me out in this one.
BTW: I am using Ubuntu 9
OpenSUSE Install :: Error ""Creating Device Modes With Udev 2.0436224] [drm: I915_diver_load]*ERROR*Detected Broken BIOS With 262140/2644kb Of Video Memory Stolen"
Aug 18, 2010I tried to install OpenSuse 11.3 on my brand new pc, which already had Windows 7 proffessional in it, and I went step by step through the installation without changing anything. It didn't work. I tried for a second time and this error message kept popping up: "Creating device modes with udev 2.0436224] [drm: i915_diver_load]*ERROR*Detected broken BIOS with 262140/2644kb of video memory stolen. 2.0436224] [drm: i915_diver_load]*ERROR*Disabling GEM(try reducing stolen memory or updating the BIOS to fix)"
And then a lot of letters and numbers wich make no sense to me. Now the only way I can initiate OpenSuse is with the OSuse boot dvd and on failsafe mode.
Hardware :: USB Device As Pipe Between Two Hosts
Jan 10, 2010I am wondering if we can with Linux create a pipe between two hosts (linux of course), so when I plug an USB disk on host1 it will be mounted on host2.
View 7 Replies View RelatedUbuntu Multimedia :: Pipe Audio From Espeak Into A Microphone Device?
Jul 4, 2010Is it possible to pipe audio from espeak into a microphone device?
I've tried doing
Code:
sudo espeak --stdout "Hello world." >> /dev/audio
but I just get:
Code:
bash: /dev/audio: Device or resource busy
Red Hat :: Creating Raw Device Via Udev Rules
Apr 12, 2010I have a Linux server that runs the Sybase DB. Sybase suggests using character devices to access raw devices rather than O_DIRECT to block devices, or cooked FS's. So, I went ahead and configured /etc/sysconfig/rawdevices as such:
/dev/raw/raw1 /dev/vg01/tempdb
/dev/raw/raw2 /dev/vg01/testdb
/dev/raw/raw3 /dev/vg01/fakedb ...
This works fine. I set 'chkconfig rawdevices on' and all is well. I read that this method is deprecated and went about trying to accomplish the same via Udev rules. I already use udev rules in /etc/udev/rules.d/60-raw.rules to set permissions on these devices, i.e.
ACTION=="add", KERNEL=="raw*", OWNER=="sybase", GROUP=="sybase", MODE=="0660"
That works fine. I even set symbolic links:
KERNEL=="raw1", SYMLINK+="vg01/rtempdb"
KERNEL=="raw2", SYMLINK+="vg01/rtestdb1"
KERNEL=="raw3", SYMLINK+="vg01/rfakedb2"
But I cannot seem to get the actual device creation piece to work within udev (it only works using rawdevices). I've tried:
ACTION=="add", KERNEL=="vg01/tempdb", RUN+="/bin/raw /dev/raw/raw1 %N"
No errors, but nothing happens. The device just doesn't create. I've also tried doing it by passing major and minor numbers. Is it possible to get all of this into udev rules or am I stuck with rawdevices? I'm also utterly confused as to the future of rawdevices... the raw man page said it was deprecated, and now at v5.5 it has that piece taken out. Also RHEL 5.3 dropped support for rawdevices in initscripts only to add itback in 5.4. I'm an admin, not a DBA, so I cannot say if this is a bad or good way, only that it is the way the vendor supports and recommends, so it is the way that I must go... just trying to make it work as "un-deprecated" and cleanly as possible.
Fedora :: Udev Rules For Using USB Device Not As Root
Oct 15, 2010Having finally made the switch from Windows (7 Professional) to Linux (Fedora 13) on my laptop, I'm now trying to get all my devices working, specifically an Olympus VN-4100PC Digital Voice Recorder. I've installed odvr and it works in root, but not as a normal user. The installation instructions say: odvr *requires* access to the user-space USB interface.
It is recommended to place "41-odvr.rules" into "/etc/udev/rules.d" or setup your own udev rules rather than running odvr as root. After changing udev rules, don't forget to run "udevcontrol reload_rules" and to replugin your DVR. Again, root privileges are required unless udev is properly setup. The file "41-odvr.rules" (designed for Ubuntu) has the following content:
SUBSYSTEM=="usb", SYSFS{idVendor}=="07b4", SYSFS{idProduct}=="020d", ACTION=="add", GROUP="audio", MODE="0664"
I tried just doing what it said and copying it to "/etc/udev/rules.d" but it didn't seem to work. Looking at other files, I then changed it to:
SUBSYSTEM=="usb", ATTR{idVendor}=="07b4", ATTR{idProduct}=="020d", ACTION=="add", GROUP="audio", MODE="0664"
And now if I do "ls -l /dev/bus/usb/002", I get:
crw-rw-r--. 1 root audio 189, 134 Oct 15 01:21 007
Which seems to suggest that it is running the "41-odvr.rules" file, since lsusb gives:
Bus 002 Device 007: ID 07b4:020d Olympus Optical Co., Ltd Digital Voice Recorder VN-240PC
But odvr still doesn't work as a normal user, giving:
Failed to open Olympus device: couldn't claim interface
Debian :: Hardcode Device Input Using Udev?
Jun 7, 2011My touchscreen "LG Display LGD-MultiTouch" will be recognized sometimes as /dev/input/event0 and sometimes as /dev/input/event3. How to hardcode /dev/input/event0 using udev and xorg.conf?
Code:
# cat /proc/bus/input/devices
I: Bus=0003 Vendor=1fd2 Product=0064 Version=0100
N: Name="LG Display LGD-MultiTouch"
P: Phys=usb-0000:00:1d.7-4.1/input0
S: Sysfs=/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.1/1-4.1:1.0/input/input0
U: Uniq=
H: Handlers=mouse0 event0
B: EV=1b
B: KEY=403 0 30000 0 0 0 0 0 0 0 0
B: ABS=700 3f
B: MSC=10
# udevadm info --query=all --path=/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.1/1-4.1:1.0/input/input0
P: /devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.1/1-4.1:1.0/input/input0
E: UDEV_LOG=3
E: DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.1/1-4.1:1.0/input/input0
E: PRODUCT=3/1fd2/64/100
E: NAME="LG Display LGD-MultiTouch"
E: PHYS="usb-0000:00:1d.7-4.1/input0"
E: UNIQ=""
E: EV==1b
E: KEY==403 0 30000 0 0 0 0 0 0 0 0
E: ABS==700 3f
E: MSC==10
E: MODALIAS=input:b0003v1FD2p0064e0100-e0,1,3,4,k110,111,140,141,14A,ra0,1,2,3,4,5,28,29,2A,m4,lsfw
E: SUBSYSTEM=input
Hardware :: Forcing Specific Driver For Device Through Udev
Oct 5, 2010My co-workers and I are trying to develop a USB device, which uses an FTDI chip as a USB-serial controller. The thing is, we would ideally like to set a custom idVendor and idProduct on the FTDI chip. The problem occurs that when we set custom idVendor and idProduct values, udev(7) loads the "usb" driver. If we leave the idVendor and idProduct values to their originals, udev(7) loads the "ftdi_sio" driver. The whole reason for the custom idVendor and idProduct values is so that I can (hopefully) write a udev(7) rule to map that particular device to a specific entry in /dev. Is there a way to write a udev(7) rule so that you can forcefully load a particular driver for a device? Is there something else that could be done to get a similar result?
View 2 Replies View RelatedDebian Configuration :: Udev Script To Run Service On Device Insertion
Jan 24, 2010I have just bought a DVB-T usb dongle to watch some TV. The software I'm using is vdr, which has to be started through the /etc/init.d/vdr service. I have created a udev script that executes the service on device insertion. It works nicely, however now when I boot up the computer it takes ages to get to desktop. I believe it is because of the WAIT_FOR part. But without this part, the service starts too soon because the usb dongle has been inserted but the firmware has not finished loading. Can someone point out an alternative way to do it? The script is here [URL].
View 4 Replies View RelatedSoftware :: Udev Creates External USB HD Device Node Too Late
May 22, 2010On my debian lenny OS I have an external usb hard disk I would like to automount it at boot. So I edited the /etc/fstab file in order to automount /dev/sdb1. It worked without problem. Then I recompiled the kernel and, as consequence, /dev/sdb1 changed to /dev/sdc1. I started playing with udev in order to match the now called /dev/sdc1 and to change its name in /dev/maxtor (being maxtor the brand of the hard disk). Obviously I edited also /etc/fstab: /dev/sdb1 is now /dev/maxtor.
The boot automount doesn't work anymore. On the boot sequence I can read the message "Mounting local filesystem...mount: special device /dev/maxtor does not exist FAILED". But when I log into the system I can run the command "mount /dev/maxtor /mnt/maxtor" and it works! So, IMHO, my udev rule is correct otherwise also the manual mount wouldn't work, right? I have to tell to udev to create /dev/maxtor BEFORE the boot automount process.
I tried to delete my udev rule and to edit /etc/fstab changing /dev/maxtor in /dev/sdc1 (the name udev gave to my hard disk after kernel recompile, before was /dev/sdb1) and it didn't work: on boot process I always see the "Mounting local filesystem...mount: special device /dev/sdc1 does not exist Failed". Then I tried to change /dev/sdc1 in /dev/sdb1 in /etc/fstab and to reboot with the old original kernel and int this way it works. With my compiled kernel, the OS seems to have lost the capacity to detect my device node correctly.
Slackware :: UDev Playing Hide And Seek With EthX Device
Feb 24, 2010Some times I boot up, and udev has labelled what is usually eth0 as eth1. Of course, my rc.inet1.conf is configured for seeing internet at eth0, so no connection, quite obviously. Then I reboot and the device label is back to "eth0". Actually I'm still not able to get connected, even at eth0, despite my nameservers being OK, and the default route gateway being all OK. PS. I have a static ip address.
View 3 Replies View RelatedUbuntu Multimedia :: Pipe A Video Feed From Virtual Box To Vlc And Save It As A File?
Aug 9, 2011is there a way to pipe a video feed from virtual box to vlc and save it as a file? cause if i could then i could save streaming videos from places like hulu and netflix or save bluray movies to a avi file for latter use.
View 6 Replies View RelatedDebian Configuration :: Udev Static Device Change From Wheezy To Jessie
Sep 9, 2015I am using a 3rd party kernel driver that does not support udev properly. When I was using wheezy I placed the required device files in /lib/udev/devices.
The udev in jessie does not appear to support this. Is there any way to have udev create these device files or will I have to create then using a script at boot-up?
Software :: Defining Video* With 2 Webcams In Udev?
Apr 13, 2011I have two identical webcams and I want to assign video0 and video1 to a particular one. I understand I can do this using udev but a bit stuck as being both the same they have the same attributes.
[Code]...
Programming :: Handle A Broken Pipe Exception (SIGPIPE) In FIFO Pipe?
Mar 2, 2011I've written a simple server in linux used fork to create a FIFO pipe.The server create two FIFO pipe.One for server read data from client and write data to client.Then another pipe for client read data from server and write data to server.When the server read data from a client used server-pipe and then write data to client.But ,if the client no read open the pipe,the server side write will be crashed because of a broken-pipe SIGPIPE. How to check whether the read side is opened?Or,how to catch the SIGPIPE,and then my server will still execute on,not crashed!!
View 5 Replies View RelatedDebian :: Use Udev Rules To Prevent HDDs To Change Device Instead Of Using UUID In /etc/fstab?
Dec 15, 2010UUIDs make fstab hard to read, so.. Is it possible to use udev rules to prevent HDs to change device, instead of using UUID in /etc/fstab?
View 2 Replies View RelatedProgramming :: Searching For Video Or Screen Cast Which Shows Device Driver Programming?
May 30, 2010I did searched you tube but my results were not great.I have 2 books on KernelProgramming.I feel I need if some where I can get a video tutorial which can help me to understand how to develop a Linux Device driver that will be great.I had a look at Greg Kroah Hartmans video lecture of developing patches on ......I have been reading books and a lot of stuff.So I wish if I could get a video lecture that would be better
View 1 Replies View RelatedNetworking :: PING - Pipe 2 Versus Pipe 3
Apr 10, 2009I'm doing ping between 2 RH servers through a VPN site2site tunnel and in some times I got in the result pipe 2 and another pipe 3 as I mark it in blue color below.
e.g.
64 bytes from 192.168.1.10: icmp_seq=0 ttl=128 time=0.229 ms
64 bytes from 192.168.1.10: icmp_seq=1 ttl=128 time=0.287 ms
64 bytes from 192.168.1.10: icmp_seq=2 ttl=128 time=0.278 ms
[code]....
What's the difference between pipe 2 and pipe 3 and what's the meaning of it?
General :: Piping Video Device Over SSH Or Tcptunnel ?
Aug 11, 2011I want to attach an analog camera to an old linux computer and directly pipe the /dev/video0 to another computer, where I can use it as a device again (so /dev/video0 should go to /dev/remote0, for example)
(Reason for doing this is that the computer does not have enough power to encode the video)
Is that possible? I've seen people can pipe the data directly from the device over ssh into mplayer, but I need to have some sort of reference point for Zoneminder.
Fedora Installation :: 12 Unstable During Boot / Crashed From Starting Udev To The Login Screen?
Nov 22, 2009Fedora 12 randomly crashes after a fresh install.Everything is left at its default during the installation except I install KDE and not Gnome.When I try to boot I hit esc at the splash screen to see where it hangs, but it never hangs at the same spot twice. Sometimes it hangs and sometimes it restarts. Its crashed everywhere from starting udev to the login screen.
I've been using kubuntu for the past year because I have the same problem with F10 and F11.
I dual boot with Windows 7 for games.
System specs:
Motherboard: MSI P45 Platinum
Processor: Intel Core 2 Duo E8500
Video Card: Radeon HD4850
Memory: 4GB (2x2GB) Patriot
HDD: Main: 250GB SATA Western Digital
code....
General :: V4l2 - Empty Screen With Capture Device
Jun 23, 2010I have video capture device "MSI vox USB 2.0", every thing seem to be fine, but none of tv applications show the device, they just show my webcam "/dev/video0"
It's driver is "em28xx" from "v4l2"
I test it with "mythtv, tvtime, xawtv, kdetv, me-tv, v4l2-tool, vlc, mplayer" none of them work detect the device, expect mplayer open a green window with time out message.
The device work fine under windows I test it with vlc-win
lsusb show:
Quote:
dmesg | grep em28xx show:
Quote:
Quote:
So i did:
Quote:
then:
Quote:
Quote:
Quote:
General :: Full Screen Video Fails / What To Fix It?
Apr 13, 2010After opening a full screen video with hulu or news clips (I assume flash player), the video flashes for a about 2 seconds and then closes back to the smaller size.
what I need to be chasing?
Ubuntu :: Video Card Swap - Screen Using A Default Video Driver
Jan 25, 2011If I take out the existing video card and put in another one of a different type (but not a different brand), how does Ubuntu behave? I know what Windows typically does. Windows starts up the screen using a default video driver which is at least 1024 by 768 and then asks you what this new bit of hardware is and asks where the drivers are. I'm pretty sure Ubuntu has default drivers of its own, but I don't know what their resolution is.
View 3 Replies View RelatedUbuntu :: When Make Full Size Video From Browser / Video Player See Only Black Screen
Feb 27, 2010i have a problem with video.when i make full size video from browser or from video player i see only black screen.can anybody help me pls?
View 8 Replies View RelatedGeneral :: Video Conferencing - H.323 Client That Can Broadcast Screen?
Nov 4, 2010I'm looking for an application for Linux that will connect to an H.323 video conference and allow the user to send their desktop as a video stream, instead of using the image from a webcam. This is for giving presentations, when it is usually more useful to see the speaker's slides than their face.
All I have found so far is Ekiga, but as far as I can see it doesn't offer this facility. Something free would be nice of course, but paid-for software would also be of interest.
General :: Viewing Full Screen Streaming Video
Apr 12, 2010I have been trying to view streaming video ([URL]) on my LCD TV (Sony KDL-40V5100). The video is dropping frames when I view in full screen mode. I am currently running with Ubuntu 9.10 and have installed both the Adobe plug-ins.
View 3 Replies View RelatedGeneral :: Can't Scp A Named Pipe?
Aug 2, 2011I am trying to encrypt a file on-the-fly, redirecting the output to a named pipe [fifo]. I SSH into my server and run the command:mcrypt -k key < file > named_pipethen from my laptop I try to scp it:$ scp me@server:~/dir/named_pipe d it says scp:users/home/me/dir/named_pipe: not a regular file
View 1 Replies View RelatedGeneral :: Keyboard Won't Pipe?
Dec 23, 2010I'm on the command line, as the install for the proprietary ATI driver has failed. I'm following the instructions for troubleshooting here but the pipe "|" key is not working - a tilda "~" shows up when I press it.I'm wondering if this is because of the keyboard being set as UK instead of US? I did have to change this setting at the graphical login initally, whether from choosing this setting by mistake or the installer choosing it automatically when I chose English UK for the language.
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