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  • How to make background image black-and-white?

    - by Dmitri
    Are there any filters that would make background image to be displayed as black-and-white? What I mean, is this: i have a background image set via css using background: url(/image.png); But now I need to apply a filter so that an image is shown as black-white only. Ideally, I would like to also apply opacity to it. The effect I really trying to achieve is to have background image black/white and on hover over that span element the filter would be removed, revealing the color version. And of cause it has to work in FF, Chrome, IE Can someone help me?

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  • Cannot upgrade or install 12.04 - Black screen

    - by Paul
    An update from 11.10 to 12.04 failed because of a boot into black screen (Nvidia graphics card) after selecting normal boot in Grub (recovery console was available though). I then wiped the whole partition (deleting all proprietary drivers) and tried a fresh install, but could not run the installation cd because it was booting straight into a black screen again. Now I reinstalled 11.10 (and installed proprietary Nvidia driver version 173), and would like to ask 2 questions: 1 - Is there a proven method to fix this problem from the recovery console, so that I can safely try upgrading again (without much knowledge of Ubuntu)? 2 - Is there a website which I could check for updated Nvidia drivers packaged into the upgrade, so that I can safely upgrade without running into a black screen some time later on?

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  • Setting up Beats audio on HP Pavilion m6

    - by Joel Auterson
    I have an HP Pavilion m6-1054sa laptop, with a Beats subwoofer on the bottom. The normal laptop speakers work fine under Ubuntu but the Beats speaker(s?) does not. Anyone know how to get this working? Here's my lspci output, if it helps... 00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Ivy Bridge PCI Express Root Port (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09) 00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4) 00:1c.1 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 2 (rev c4) 00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04) 00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Thames XT/GL [Radeon HD 7600M Series] (rev ff) 07:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5289 (rev 01) 07:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 0a) 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

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  • Black screen on login page

    - by Sulliwane
    When I startup my Ubuntu 12.04 installed on a Z77 Pro4 (ASrock motherboard), crucial M4 SSD drive (sata 3), and intel i5 3570k (ivy bridge), I get this black login screen : I also hear the ubuntu login sound "tic toc" but the screen is black, and if I type in some text, only strange characters appears (as you can see on the picture). Do you have any idea ? Thanks. ps : this is an evolution of a previous problem exposed here

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  • nvidia 331.89 super + W causes black window

    - by Heihachi
    When i am hitting Super + W and choosing one of active window it opens. But when i am mazimizing another minimized window i am getting blank black window, if i minimize then maximize it again it works. Tried 340.24 drivers - but they are totally unusable because of interface corruption in firefox, thunderbird, libreoffice. 331.89 seems stable except this annoying black window. I am using GTX 750 ti

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  • Ubuntu stuck, goes black and comes to login screen

    - by Iury Simões
    I'm using normally the ubuntu, version: ~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=13.10 DISTRIB_CODENAME=saucy DISTRIB_DESCRIPTION="Ubuntu 13.10" And so, for no reason, the screen goes black and come back to login screen. This not happen on login screen, like login screen infinite loop problem. I get the login and use it normally then suddenly the screen goes black. I was using Ubuntu 14 and for this problem I formatted and installed Ubuntu 13, but the problem remains.

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  • Installing NVIDIA driver causes black screen (750M)

    - by aftrumpet
    I have a dual boot set up on a Lenovo Ideapad Y500 with NVIDIA 750M and I am having problems installing the graphics cards. I have made sure to install both linux-headers-generic and linux-source, and yet have ended up with a black screen whether I install nvidia-current, nvidia-current-updates, nvidia-experimental-310, and nvidia-319. I even tried enabling proprietary drivers through settings and still ended up with a black screen on boot. Is my graphics card just not supported yet, or is there a way to fix this?

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  • ????????: ????OSWatcher Black Box?????????(???)

    - by Steve He(???)
    Normal 0 7.8 ? 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:????; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:??; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} OSWatcher Black Box??????????????????????OSWatcher Black Box????????;??OSWbb?????????????????;???????OSWatcher Black Box;???????????OSWatcher Black Box Analyzer (OSWbba)?????OSWbb?????? WebEx??????(???) ?????:2012?11?15?15:00(????) ????: 250 409 927  ???????? 1. ??????:https://oracleaw.webex.com/oracleaw/onstage/g.php?d=250409927&t=a 2. ??????? ??????????,???????????,????????? InterCall?????? ??Webex???????,???????????,??????:    - ????ID: 31151003    - ????????: 1080 044 111 82    - ?????????: 1080 074 413 29    - ????: 8009 661 55    - ????: 00801148720    - ????????????????MOS?? 1148600.1 ???? ???:????????????,??????????(31151003)??????(First Name and Last Name) ??????MOS??Doc ID 1492202.1????????????

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  • Inconsistent black levels in windows 7 media center

    - by James G
    I've got a HTPC running windows 7 64bit, hooked up to a Samsung LCD TV. My problem is different types of video are displaying different black levels on the TV. When I play a bluray through Arcsoft Total Media Theater I have to set the "HDMI Black Level" to "normal" in the TV picture options menu. When I play recorded TV through WMC I have to set it to "low" otherwise the black colors on the video are washed out and grey. Is there any way to configure the system so all videos are displayed with the same black level? The hdmi black level setting is deep in Samsung's menus so it's becoming a chore to keep switching it everytime I watch a different type of video. I'm using an ATI 4670 graphics card with HDMI output going straight to the TV. In the ATI catalyst control center I've got pixel format set to RGB 4:4:4 (Full RGB) since the TV wont allow me to change the HDMI black level if I choose one of the other settings.

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  • Ubuntu 13.04 under Parallels Desktop - Black Desktop after X Windows Update

    - by Bob Reckhow
    I have been running Ubuntu 13.04 successfully on a MacBook Pro in a virtual machine in Parallels Desktop 9. Today (2013-10-17) after applying today's Ubuntu update, which included updates to X Windows, my Ubuntu 13.04 virtual machine launches, the launcher comes up, but the screen background is solid black, rather than the shaded orange colour of the default desktop background (and my desktop icons are "hidden behind this blackness", as well). I can launch applications from the launcher, and there is a very brief white flash on the screen, and then it returns to black. It's as if there is a "black blanket" covering the entire screen, so there is no way to interact with any application windows using the keyboard or mouse. The icons of the launcher are responsive to the mouse, so I can right-click and quit any application I have launched. But the rest of the screen is non-responsive to keyboard or mouse. This same behaviour happens with two different versions of Parallels Tools, so I am quite sure this is not a Parallels problem per se, although I could believe that it could be a paroblem with the interface between Parallels and this new updated X Windows code. Could anyone tell me what has happened, and how I might be able to fix this problem, so I can continue to use my Ubuntu 13.04 virtual machine? (I do have the option of reverting to a previous version of my virtual machine from before this update, but if possible I would prefer to keep my version of Ubuntu 13.04 up to date with the latest updates.) Thanks, Bob

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  • Ubuntu black screen after Installation of 12.10 Live USB

    - by Lime0fHint
    My computer was made in 2004, but I'm sure it doesn't matter since it's a durable machine. So recently, I decided to breathe new life to it with Linux. I tried Lubuntu 12.10, Nope. Black screen after install. So I tried Ubuntu 12.10 when I gave up, and same exact thing. Except, this time I'm fighting for it, since Ubuntu is the best OS I've ever seen. So back on-topic, when I start the installation, it says that something is already mounted (Sda or something of the sorts) So I just figure that it's the Live USB I'm using. So I let it ignore it, and move on. The rest of the installation goes smooth, all looks fine. Then I get to the screen with the introductory to Ubuntu. Meanwhile, it's still installing, but finishing up. I'm not sure if the install actually finishes, but I do know that after a bit, the screen goes back to the desktop. The install closes and I'm back at the desktop, and the cursor is showing the "loading" symbol, as if it were still working. Then the screen goes black, with the same cursor. After that, nothing. I left it over night like that thinking it was doing something, in the morning it was still black with the cursor circling or whatever. So what could be causing this? One concern I have is that I have a Nvidia graphics card (7300 GT). I heard that Nvidia isn't compatible with Linux? I did notice that it was marked as unreconigsed by Ubuntu, so is that the problem perhaps?

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  • Bluetooth not found on BCM43228

    - by TK Kocheran
    I've got a Broadcom BCM43228 mPCIe card which came with my motherboard (ASUS ROG Maximus V Extreme, can't seem to find a link to what the card is) which is working great for WiFi right now, but I can't detect the Bluetooth hardware onboard. In Windows, I have full Bluetooth 4.0 support. $ lspci 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) 00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 04) 00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4) 00:1c.4 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 5 (rev c4) 00:1c.6 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 7 (rev c4) 00:1c.7 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 8 (rev c4) 00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation Device 1189 (rev a1) 01:00.1 Audio device: NVIDIA Corporation Device 0e0a (rev a1) 0d:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller 0e:00.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:01.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:04.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:05.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:06.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:07.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:08.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 0f:09.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) 10:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller 12:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA Controller (rev 01) 15:00.0 Network controller: Broadcom Corporation BCM43228 802.11a/b/g/n 17:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA Controller (rev 01) The key line seems to be: 15:00.0 Network controller: Broadcom Corporation BCM43228 802.11a/b/g/n If I try to detect the Bluetooth card, I don't see anything: $ hcitool dev Devices: rfkill list all: Output lspci: Output lsusb: Output I finally found the card with usb-devices: T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0b05 ProdID=17b5 Rev=01.12 S: Manufacturer=Broadcom Corp S: Product=BCM20702A0 S: SerialNumber=############ C: #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) I've heard that this card needs to have firmware injected into it in order to function. If that's the case, how do I do it?

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  • Blank screen after Switch User or Resume

    - by matt wilkie
    About half the time when I switch users or resume from standby or resume the screen goes blank (black). If I work the cursor keys I can hear the system bell when it gets to the end of the user list. I can also successfully login, going from memory, but screen stays black. Sometimes closing and re-opening the lid will light up the screen again. Pressing the special Function key to enable/disable external monitor connection has no effect [Fn]-[F5],[Fn]-[F6]. If none of the previous work I need to put the computer into hibernation or full power off to restore screen function. If I watch closely when switching users I think I can see the screen initially start to light up and then quickly fade to black. The computer is an Acer Aspire 3500, model ZL6, running Ubuntu 10.10 installed 2 days ago. No proprietary drivers are in use. I'll provide a list of hardware details as soon as I can figure out how to generate that (didn't there used to be an entry for hardware details under the System menu?). Possibly related questions: No resume after Hibernate or Standby When I resume from suspension - the screen is blank Switch user fails to complete successfully For what it's worth, blank after resume also used to happen occasionally when the laptop was running XP-Home, but nowhere near as often, perhaps 6 or 8 times a year. UPDATE: I found System Administration System Testing and ran the Monitor test. It went very very dark, but the window elements could be discerned, and the whole screen flashed (from very very dark to black). On the third repeat of that same test the screen went to full blaupck and stayed there. Moving the mouse, via touchpad, or touch keys did not wake it up again. I had to close the lid and put the computer into hibernate, and press the power button to restore it. UPDATE2: output of lshw: http://pastebin.com/q7n8676r, lspci: http://pastebin.com/6ujzVK4r UPDATE3: sometimes I can restore the screen by flipping to console 1 with ctrl-alt-F1 and then back to graphical with ctrl-alt-F7.

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  • XNA `tex2Dlod` always returns transparent black

    - by feralin
    I want to sample a texture in a vertex shader, so at first I just tried using float2 texcoords = ...; color = tex2D(texture, texcoords); But apparently I cannot use tex2D in a vertex shader, and must use tex2Dlod. So then I changed the above code to color = tex2Dlod(texture, float4(texcoords, 0, 0)); But now color is always float4(0, 0, 0, 0) (i.e. transparent black). Why is this, and how can I fix it? EDIT: I know for a fact that the texture does not contain just transparent black pixels.

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  • Cosmic Journeys – Supermassive Black Hole at the Center of the Galaxy

    - by Akemi Iwaya
    Even though the center of our galaxy is obscured by thick dust and blinding starlight, that has not stopped scientists from piecing together clues about what may lie there. Sit back and enjoy a ‘cosmic journey’ with this excellent half-hour video from YouTube channel SpaceRip discussing what scientists have learned about the supermassive black hole at the center of our galaxy, and their work on getting a ‘direct image’ of it. Cosmic Journeys: Supermassive Black Hole at the Center of the Galaxy [YouTube]     

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  • Architecture Forum in the North 2010 - Hosted by Black Marble

    - by Stuart Brierley
    On Thursday the 8th of December I attended the "Architecture Forum in the North 2010" hosted by Black Marble. The third time this annual event has been held, it was pitched as featuring Black Marble and Microsoft UK architecture experts focusing on “Tools and Methods for Architects.... a unique opportunity to provide IT Managers, IT and software architects from Northern businesses the chance to learn about the latest technologies and best practices from Microsoft in the field of Architecture....insightful information about the latest techniques, demonstrating how with Microsoft’s architecture tools and technologies you can address your current business needs." Following a useful overview of the Architecture features of Visual Studio 2010, the rest of the day was given over to various features and ways to make use of Microsoft's Azure offerings.  While I did feel that a wider spread of technologies could have been covered (maybe a bit of Sharepoint or BizTalk even), the technological and architectural overviews of the Azure platform were well presented, informative and useful. The day was well organised and all those involved were friendly and approachable for questions and discussions.  If you are in "the North" and get a chance to attend next year I would highly recommend it.

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  • Purple Screen then Black Screen while Booting from CD or Windows Install

    - by Tyler
    Whenever I try to run Ubuntu from my internal CD drive, I see this screen minus the Ubuntu Text: Then the screen goes black, not even the internal light stays on. Sometimes it restarts itself, other times the black screen is indefinite until I restart the laptop myself. I'm on an HP Quad-Core AMD A8-3500M APU with 8 GB RAM and a Radeon AMD 6620g Discrete-Graphics Card. (HP dv6-6145dx) This is my first time using Linux, I am not too technically-inclined so any simplification would be welcomed. I am good at following technical instructions though which is how I was able to partition my hard drive and change the boot order to allow the internal CD drive first. Thanks in advance!

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  • Bloom shader makes it impossible to render black?

    - by Mathias Lykkegaard Lorenzen
    I am playing around with the bloom shader from the XNA sample page, to do some glow shading. I am rendering primitive vector-ish squares of linelists/linestrips, on a background. However, I am facing a few problems. With a black background and white squares, I can actually see the squares. However, with a white background and black squares, I can't see them at all. Why is this happening, and is there any way of me fixing it? Can I modify my bloom shader to also "glow" dark elements, if that's what is causing it?

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  • Cycles through black screen on login after changing password

    - by John L
    On my laptop, I forgot the password to my Ubuntu partition, so I logged into the root command shell on the recovery start up option in GRUB so that I could change the password. On my first attempt to change my user password, I got this error: root@username-PC:~# passwd username (*not my actual user name*) Enter new UNIX password: Retype new UNIX password: passwd: Authentication token manipulation error passwd: password unchanged After doing some research, I discovered that I was stuck as read only on the file system, so I ran the following command to remount the file partition as read/write: mount -rw -o remount / Afterwards, I change my user password using passwd and it was changed successfully. I restarted my laptop and tried to login using the new password but the only thing that happened was after entering my password it flashed to a black screen with some text that I couldn't make out except for "Ubuntu 12.04" then another black screen half a second later, and finally back to the login screen. Repeated attempts to login results in only this action.

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  • Ouya build experiencing odd graphical artifacts, screen half black

    - by Neeko
    I'm witnessing very odd graphical artifacts when I run my Unity game on Ouya. After the Unity splash screen, the game loads with the screen half black. This seemingly has started occurring out of the blue. It also doesn't occur in the editor or the standalone build, only on Ouya. I can't think of a single reason why this would be happening. If I open the Ouya menu screen and close it, the game returns to normal; somewhat, as there may be some artifacts lingering but the screen isn't half black like in the screen shot above. I know there's not much to go off of, but any insight into why this may be happening is greatly appreciated.

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  • XNA windows phone release black textures

    - by Lukasz Kajstura
    i just made a 3d game in XNA for windows phone 7. I build it in release mode on visual studio 2010 and suddenly when I run game there is no textures on models - 2 models are black and one is transparent. Models are in .X format exported from 3dsmax and have textures in .jpg also added to game content. I set build action to none and all worked fine in debug mode. When I change to release mode - black textures. When I set build action to compile it gives me warning: Asset was built 2 times with different settings: using TextureImporter and TextureProcessor using TextureImporter and TextureProcessor, referenced by... and still no textures. What can I do?

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  • Black Screen When Booting From .VDI Image

    - by GTyler
    I have cloned a VirtualBox machine, which runs Ubuntu 11.04 32-bit as Guest OS. I now wish to transfer it to a new host machine running Windows Vista 32-bit. I’ve transferred the .vdi file and adjusted the name and memory. However when I boot it, the options to choose the Linux version came up: Ubuntu, with Linux 2.6.38-10-generic, Linux 2.6.38-10-generic(recovery mode) , Previous Linux versions, Memory test. Once I chose Linux 2.6.38 a black screen just appears with an underscore at the top. What should I do to get it to run? I don’t have my original machine near me now so I can only work with my .vdi image. My VB is version 4.0.10. I have tried cloning this VDI and also assigning a new UUID and making a new guest, but I still got the black screen. Thank you.

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  • Xubuntu 14.04 black screen after monitor off/on

    - by Sampo Smolander
    I have a HP desktop machine with Ubuntu 14.04, with also Xubuntu and Gnome desktops installed. I mostly use the Xubuntu session. When using the Xubuntu session, when I power off my monitor, and power it back on, the screen stays black and I cannot do any work. With ctrl-alt-f6 I can open another virtual terminal, and then the screen works again, but if I to go back to the desktop session with ctrl-alt-f7, all I have is a black screen. But, if I login to Unity (the Ubuntu default session), or to Gnome, and turn the monitor off and back on, everything works ok. Also, if I log out, and while in the lightdm greeter, turn the monitor off and back on, everything works ok. What could be the cause for this, and how to fix this?

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  • All video players display black screen.

    - by Dennis
    I'm working in 10.04 Lucid. All my video players (Movie Player and VLC) and the preview windows in editors (OpenShot and Pitivi) will only display a black screen when playing a video. The sound is fine and the videos work fine on other computers. I have tried multiple formats from varying sources .MOV taken from old ffmpeg projects, .AVI straight from a camera, .MP4 using h.264 from OpenShot on another system, .OGV from a gtk-recordmydesktop session on this very computer. I even get a pure black screen in the viewer when starting a remote session in VNC. This box has a GeForce 8400 GS using the Nvidia drivers in case it may be a card problem or setting.

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  • Ubuntu boots to black screen after failed upgrade from 12.04 to 12.10

    - by ywx
    This happened when I tried to upgrade from 12.04 to 12.10. I don't know whether the upgrade process had completed downloading and installing packages or whether it was still in progress, but I got a message The application Compiz has closed unexpectedly. At that point, my mouse stopped working so I switched to tty1 by Ctrl+Alt+F1 and rebooted from there. I then found that I could not boot into Ubuntu any more. My screen stayed first purple then black. I went back to tty1 and it said I was running 12.10. I tried some suggestions in this thread on Ubuntuforums: Wubi blank purple screen than blank black screen and this one: How to set NOMODESET and other kernel boot options in grub2 but nothing seemed to work. I can boot Windows as normal. I am using Wubi on Windows7. My laptop is a Lenovo T410i with NVIDA NVS 3100m

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