Ubuntu Multimedia :: Cannot Preview Black Screen / Could Not Generate Thumbnail?
Oct 3, 2010
At some point after one of the many updates I do to my system, I seem to have lost the ability to preview myself on cam. Simply put, software like CamStream and Cheese just give me a black screen when I open it up. So, I cant see how I look on cam and what's in or out of the shot. If I tell Cheese or Camstream to capture a still, there is no problem. In fact, that is the only way I can determine what the camera is seeing of me and my background.
The only "solution" is to either have Cheese takke my pic and determine from there (as just mentioned), or go on a video chat room and have it use my camera to give me a real-time look at what the camera is aimed to. As someone who creates webcam videos for upload, and sometimes needs to move the camera while still live, this is not convenient so I hope to fix it.
Here are the command line outputs Im getting:
Cheese:
Code:
** (cheese:3704): WARNING **: could not generate thumbnail for /home/lixen69y2k/Webcam/2010-08-25-101226.ogv (video/ogg)
** (cheese:3704): WARNING **: Icon 'video-ogg' not present in theme
Camstream:
Code:
W: CamStream version 0.27 starting.
>> void CCamStreamApp::ReadConfigFile()
<< void CCamStreamApp::ReadConfigFile()
code....
Could not grab image (select timeout): Resource temporarily unavailable.Seems that GUVCview gives me the best articulation of what the problem is. I have both a built-in webcam for my laptop as well as a USB one. Both seem to have this problem so I know its a case of some part of my software being the trouble.
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Jan 15, 2011
I'm not too sure what causes this. But why do some video files display a thumbnail preview in Nautilus and others don't? See screenshot below.
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Mar 28, 2010
After I manually installed multimedia codecs, like w32codecall, I got Linux to play movies and I also got thumbnail previews of them in Dolphin. However, I noticed that recently Dolphin doesn't display my thumbnails anymore. I don't quite recall whether the any video player could use my installed codecs, at least xine works. The only thing that could have caused that is actually the automatic system updates I received. I still have my multimedia codecs installed, but Dolphin doesn't show the movie previews anymore.
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Apr 24, 2009
How this can be done? I already have the necessary codecs installed and have kde 4.2.
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Feb 27, 2009
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Jan 23, 2011
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And, so I though I would download "Visual tray tip" which mimics the taskbar preview on mouse hover. But on my 6 gig hard drive, p3 650 mhz 1 gig ram living room notebook (mainly flash educational gaming for kids) I really would like such a task bar preview. But upgrading Ubuntu is out of the question, since it is a functioning machine with 211 megs free on drive, and I have no stomach, time, or wish to kill it by an upgrade. So, am wishing for a sudo apt-get install solution.
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Jul 18, 2010
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Jan 25, 2011
This obnoxious bar has just appeared in Smplayer at the top of the screen. It stays there even when I go full screen. Now full screen isn't full screen and there are black edges on both sides of the screen. I have not be able to figure out how to hide it. I do not need or want this onscreen display. How can I configure Smplayer to make this go away? How can I get my 16:9 full screen aspect ratio back? I have done nothing to mplayer or smplayer as far as editing any or changing any configuration files. I tried several videos and it displays on all of them. It was not there last time I used Smplayer.
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Oct 5, 2010
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Mar 6, 2010
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Mar 26, 2010
I`ve got problem with zoneminder and dvr card.I`ve got black screen when I`m using video for linux 2 or white screen when I`m using video for linux 1. My zoneminder logs
6.03.2010 13:31:44.079779 zmdc[3765].INF ['zmc -d /dev/video0' starting at 10/03/26 13:31:44, pid$
26.03.2010 13:31:44.108492 zmdc[3765].INF ['zmc -d /dev/video0' crashed, signal 6]
[code]....
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Mar 30, 2010
I've installed Ubuntu 9.10 in my old desktop, i.e. Compaq Evo D510 e-pc:
Intel Pentium 4 1.7Ghz
1GB 400Mhz RAM
80GB HDD
Intel 845G chipset board
Onboard 4X AGP Intel Video chipset
Onboard audio
The above is my setup and Ubuntu runs perfectly fine when it is being cold booted, i.e. I shut it down during the night and boot it in the morning, it boots perfectly fine. But while using, it suddenly freezes and I'm only able to move my mouse pointer and nothing else works on the screen. I tried doing the Ctrl+Alt+(F1/F2/...) but nothing works.
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I have a 28" monitor connected to it and it runs at 1920 x 1200 (16:10) resolution at 60Hz.
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Aug 5, 2010
Running 10.04 64bit When using Microsoft LifeCam VX-6000 webcam/mic combo - no video (black screen). Microphone works, webcam light goes on. Seems like the driver (uvcvideo) sees the webcam and supports, but no video comes out. Kernel: 2.6.32-24-generic Driver: uvcvideo DMesg:
[Code]...
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Oct 29, 2010
I am having great difficulty viewing a series of educational videos (MMS streams) in Ubuntu 10.04, which view perfectly in Windows XP. All I get is a black screen. No matter whether I use Firefox or Chrome or Opera, No matter whether with MPlayer, Totem or VLC.
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Dec 4, 2010
I'm really new to Linux (meaning that I never programmed or anything) but have a major issue here: I have been using Ubuntu since 9.04 (always upgrading) and always with this Laptop, without problems. Then I installed 10.10, didn't like it and downgraded to 10.04. Thats when the issue came up. So now I'm using Ubuntu 10.04 and have an Intel GMA 4500 graphic card. That, though, is all I know about the graphics on my Laptop.
The problem:Every now and then (mostly right after logging in, then randomly) my monitor will flicker quickly and then go black completely.
After I close the laptop and open it up again, the screen works fine for some seconds, then, without moving anything, it goes black again. Sometimes it just stays normal, too. Just changing the angle of the monitor doesn't help, only closing it completely and opening it.
1) It could be the cable loop.BUT: The issue only appears after logging on to Linux. And moving the monitor doesnt help, just closing it completely.
2) Graphic driver.I have no idea how the software part of Linux works considering graphics. I have read that many people have had problems with GMA 4500, so my hope is that it can be fixed.
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May 1, 2011
I recently upgraded to Ubuntu 11.04. I didn't really find the Unity interface useable (I didn't like Ubuntu Netbook Edition for this exact reason) and am running it in Classic mode. I have a Acer Aspire One D255, Intel Atom processor, etc. When I start the computer up from a hibernate, the screen goes black with a set of random colored pixels at the top corner. I have a mouse but nothing else.
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Jul 31, 2011
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I purged VLC - but I already knew it wouldn't fix it - since it was system wide So I installed VLC through winetricks to check and guess what - it works - all formats Anyone know what the problem could be? or more importantly how to fix it?
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Jun 19, 2011
Is it possible to display a thumbnail for the *.png image in Nautilus ?It works fine for *.jpeg, *.tiff,... What are the requirements to do that ? (librairies...)
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Mar 23, 2011
I installed Debian Squeeze from Debian 6.01 CD 1 on my old Pentium 4 Desktop. Now when I log off, the screen gets black and login window is not appearing. I have tried all old post of linux questions forum and also of ubuntu
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May 3, 2010
System Specs:
RAM: 1GB
Mother board: P4P800 VM
Video: Internal (plus a tuner card I don't use
OS: Ubuntu 10.04 (with latest updates
Ok so a brief description. The comp initially had an ATI Radeon X1600 card I removed because it was giving more trouble than it was worth. I'll add it later if there is a chance it might make things batter. (NB the computer was painfully slow with the card installed... runs faster without it)
I installed the restricted formats pakage as per the instructions found at: [URL]
So I installed the ubuntu-restricted-extras package and then ran:
sudo /usr/share/doc/libdvdread4/install-css.sh
sudo apt-get install ubuntu-restricted-extras
in the terminal.
Now here is what happens. The DVD plays as I can hear it but the screen is black. moving the screen i'll get glimpses of video but not much. This happens in MOvie PLayer and in VLC. However with VLC by moving it around and going full screen I manage to get the video component working as well.
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May 30, 2010
I insert my DVD into my machine. The little "waddya wanna do" window then opens, and I select "play in VLC." I then press the play option on the video menu (not the play button on the VLC controls). Then the VLC window turns black, or the part where the video is supposed to appear does, anyway. So double-clicking to get to fullscreen sometimes fixes the problem, but then I can only view it in fullscreen, not good. It didn't fix the problem this time, so I double-clicked again to get out of fullscreen. Then my whole display turns black and white. WTH? The display problem fixes on a reboot.
This happens on a regular basis when I try to play movies. My display is, right now, black and white. After I finish this post I'll restart my computer to fix the colors.Also, it should be helpful that when I move the VLC window or am going to/from fullscreen, I can see the movie for a split second, and in full color. The rest of the screen stays B & W, though.Also, for some reason, when I play a movie, VLC open two windows: one with the video, and the other with a visualization and a title bar saying "VLC (X11 output)"
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Jun 11, 2010
I have a Logitech Quickcam Chat webcam (USB ID 046d:092c) that's worked with my Ubuntu with minimal problems (just some nVidia driver crap) for ages now. I'm not using nVidia anymore (Intel now), but since my fresh install of Lucid, my webcam doesn't seem to capture anything. It is detected by lsusb, but when I open Cheese, the picture is just black. Skype doesn't give me any video at all, not even that annoying static or green lines. Clicking the Test button in my Skype Options undedoesn't do anything;double-clicking it gives me a full-screen grey screen - pressing Escape takes me back to the preferences window. After I get the grey full screen and press Escape, the Test button is gone until I close the Options window and open it up again.Going into gstreamer-properties and testing v4l2 (under Video -> Default Input) just shows me the 'Testing ... Click Ok to finish' window for ages until I close it - no video appears or anything and I'm not entirely sure what I'm supposed to be seeing. Testing with the 'Test Input' option does give me the coloured lines and static. Testing v4l seems to make it crash, but no error comes up in the terminal I'm running it from.lsusb output:
Code:
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 046d:092c Logitech, Inc. QuickCam Chat
[code]...
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Jan 18, 2011
I got a Rocketfish RF-WEB2C webcam, plugged it into my Dell Inspiron Mini 10, and it worked just fine. Cheese ran it, tinychat ran it, skype ran it, all was good. Today, all I get is a black screen. Tinychat claims that it isn't giving out any signal, though can detect it, and Cheese showed me a black screen, though listed it as the the device it was using. I figure it isn't a lack of drivers, as it worked yesterday, and it really shouldn't have broken yet, as I just opened it yesterday.
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May 22, 2011
When I try and play any You Tube video the video area just stays black. I also don't get any sound.
10.04 64 bit
Firefox 3.6.17
I have installed the restricted drivers, cleaned out all my recent history (cookies, etc) and restarted Firefox. Same result. Just a black screen. I went here: [URL] Where Adobe says I can test to see if flash is working and it said everything was installed successfully.
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Apr 16, 2010
On both Karmic Koala as well as Lucid Lynx, I am having massive problems getting my nvidia card to register properly. I am on an Acer Aspire 5953 laptop pc with a Gt130m discrete GPU in a hybrid installation with an onboard GPU.Freshly installed, both 9.10 and 10.04 runs smoothly, I can enable desktop effects, I can even see the screensavers that run openGL - although they run laggily in fullscreen, since they're obviously using the onboard, and very weak, GPU.The problem however, appears whenever I install the suggested NVIDIA drivers that Ubuntu finds for me - after doing this, I am asked to reboot the system and on both systems, I am treated to a black screen, instead of a login-screen. The only way to get the system up and running again, I have found, is boot in fail safe mode and edit /etc/X11/xorg.conf, erasing everything. This lets me boot back up in a regular mode.
When I check the logs, both the onboard GPU and the gt130m GPU is located, the onboard as PCI:0:0:2:0 and the nvidia gt130m discrete gpu as PCI:0:1:0:0 - I have tried adding BusID: ("PCI:0:1:0:0") to the xorg.conf, too, to no avail. I am continously treated to the black screen (a flicker at most) and the logs always tells me that no xserver could find no screens.So far, I have only been installing Ubuntu inside windows - I am hesitating to install on a fresh drive, since I am afraid of the nvidia black screen putting me in a position where I can't access the system. Is it possible that the fact that I install ubuntu inside windows might somehow affect Linux's capability of accessing my discrete GPU?
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May 14, 2010
When I go to change the Visual Effects settings from Normal to either of the other 2 choices, the screen goes black and nothing happens. Could this be a driver issue? Should I buy a video card instead of using on-board and if so, which ones work the best with Ubuntu?
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Aug 2, 2010
I'm experiencing a sudden black flash before video play back with VLC. The whole 3 screens just flash black and come back, and then the video plays fine in VLC. This doesn't happen with other media players, such as mPlayer and Totem.
I'm running an XFX Radeon 5450 (ATi) with the propriety 10.7 drivers. Running 3 17" (1280x1024) in "EyeFinity". I've had a look on the unofficial bug thingy for ati drivers for linux, and there is a bug back from 2008.[URL]...
Just wondering if anyone has any ideas, of tips to start looking to try and solve my little issue, I've spent hours and hours looking though xorg, syslog and other logs in /var/log/ and nothing seems to stand out.
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Sep 5, 2010
I don't seem to have an "xorg.conf" file.
Gateway SB400a computer with Edubuntu Lucid installed. The problem first cropped up when I installed the Edubuntu packages on Ubuntu. I did a fresh install with Edubuntu and the problem persists. I don't want to go back to Ubuntu since this computer is for my Grandkids and I want to the Edubuntu stuff for them.
I don't have the specs handy, but I can get them. what I have to do to get them. (it happens when you get old)
EDIT: From my xorg.0.log: (--) PCI:*(0:0:2:0) 8086:2562:107b:4000 Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device rev 3, Mem @ 0xf0000000/134217728, 0xffa80000/524288
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Dec 11, 2010
I had Ubuntu 10.04 running fine. Then I got curious about NVIDIA XServer.
"ATI Technologies Inc RV380 [Radeon X600 (PCIE)]" - Video Card
I opened it up, clicked a settings change, and said OK.
It said you need to update your blah blah blah.
Then it said blah blah blah doesn't exist.
Then it said it would create it for me.
Then I said REBOOT!
Now I get a black screen of death.
The only way I can get anything to happen on my monitor that comes from this computer is to boot into the Install Disk and say "TRY UBUNTU".
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