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• Black screen after grub kernal selection menu

  - by skip

  I have an Acer eMachines e727 with Intel GMA 4500M integrated graphics (drivers updated to latest). I installed Ubuntu 12.04 using Wubi. All is well until I select the kernal (first one on the list). My display goes black. I searched for solutions and found one on Unbuntu forum which partially helped. Following that sticky post, I pressed "e" at the kernal listings. I changed the $Linux... default line to "quiet splash nomodeset" and was able to get to the login screen and desktop. I edited grub to make the nomodeset permanent (also removed the vt command as recommended). I followed through with changing grub to match the graphics as recommended in the article using the grub cli (using info from vbeinfo). I updated grub with the recommended settings but still get the black screen after selecting the kernal. Only nomodeset works to get me to the login and desktop. Once I get to the desktop, my display resolution shows being set to 1024x768 but it actually looks like 800x680. What do I need to do to get past these issues? Thanks!

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• Screen becomes black after pressing dash or alt-tab

  - by cegerxwin

  I did an upgrade from 11.04 to 11.10. Unity 3d becomes a black screen after pressing the dash-button or after pressing alt-tab to switch between open windows. I can see the panel on the top(lock,sound,..) and the panel on the left (launcher) but the rest is black. It looks like a maximised black window. The open Windows are active but I cant see them. I logout by pressing logout in the right top corner and pressing enter (because logout is default focused on the dialogue screen) and leave unity3d. Unity3d worked with 11.04 very good. If I press the dash button the dash looks like an 16-Bit or 8-Bit window and buttons for maximise, minimise and close are displayed and looks inverted. I have rebooted my notebook just now and log in to Unity 3D and tested some features of Unity and everything works well. The black thing is only a layer. I can use my desktop but cant see anything because of the layer, but everything works. It seems so, that a layer appear when pressing dash or alt-tab and does not disappear when close dash or choose a running app with alt-tab. you will see the necessary info related video problems: Unity support: /usr/lib/nux/unity_support_test -p OpenGL vendor string: X.Org R300 Project OpenGL renderer string: Gallium 0.4 on ATI RC410 OpenGL version string: 2.1 Mesa 7.11-devel Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes xorg glxinfo lspci -nn | grep VGA 01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RC410 [Radeon Xpress 200M] [1002:5a62]

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• How to make my screen brightness not change when I plug my laptop in

  - by user63985

  I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness very low and when I plug my laptop in the brightness gets set to maximum which feels like sticking my eyes in boiling lava. In System Settings ? Brightness and Lock the Dim screen to save power checkbox is unchecked. My laptop is an HP Mini 110 In case it is an acpi issue I have put my acpi-support file here http://paste.ubuntu.com/1008244/

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• Ubuntu 12.04 boot hangs with a black screen before grub menu after upgrade (gma500_gfx driver)

  - by Eric van der Vlist

  I am using Ubuntu on a fit-pc2 specifications and after upgrading from 10.04 to 12.04 I get a black screen at boot time (before displaying the grub menu) and the computer hangs with no disk activity. I have managed to boot Ubuntu 12.04 on a live USB key but had to add the following boot options to do so: console=tty1 or console=text acpi=off noapic nomodeset Using boot-repair, I have tried to add these options to /etc/default/grub (see this pastie log for instance) but I haven't been able to fix the black screen issue. I have tried many other things such as the workarounds mentioned on the web for PSB-GFX_drivers without any success and also to uncomment GRUB_TERMINAL=console with the result of getting a No video mode activated error. During these tests, I have managed to break /boot/grub/grub.cfg and could then hit grub in command line. This gave me the chance to check that I can boot without problem if I type: grub> set root=(hd0,1) grub> linux /vmlinuz root=/dev/sda1 ro acpi=off noapic nomodeset console=tty1 grub> initrd /initrd.img grub> boot How can I tell grub to use these options?

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• Lenovo S110 netbook screen resolution Ubuntu

  - by Neigyl R. Noval

  I am still stuck with 800x600 resolution. Here is the output of lspci: 00:00.0 Host bridge: Intel Corporation Device 0bf2 (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Device 0be2 (rev 09) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02) 00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 02) 00:1d.0 USB Controller: Intel Corporation N10/ICH7 Family USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02) 00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02) 00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05) 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8176 (rev 01) Also, I tried modifying /usr/lib/X11/xorg.conf.d/10-monitor.conf to fix this problem, but still does not work: Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Monitor Model" EndSection Section "Screen" Identifier "Screen0" Monitor "Monitor0" Device "Card0" SubSection "Display" Viewport 0 0 Depth 1 Modes "1024x768" EndSubSection SubSection "Display" Viewport 0 0 Depth 4 Modes "1024x768" EndSubSection SubSection "Display" Viewport 0 0 Depth 8 Modes "1024x768" EndSubSection SubSection "Display" Viewport 0 0 Depth 15 Modes "1024x768" EndSubSection SubSection "Display" Viewport 0 0 Depth 16 Modes "1024x768" EndSubSection SubSection "Display" Viewport 0 0 Depth 24 Modes "1024x768" EndSubSection EndSection Section "Device" Identifier "Card0" Driver "vesa" VendorName "Intel Corporation Device" EndSection I'm using Gnome. System Preference Monitor screen resolution sticks to 800x600. What am I going to do?

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• Dual monitors, screen resolution, xorg.conf.d

  - by Flase

  I do a lot of RTFM but this one has got me stuck. I have Ubuntu Studio 12.04 Precise Pangolin with XFCE as its default desktop. My old HIS ATI Radeon 9250 graphics card was adding red crud across the screen with the generic driver, but downloading the proprietary "fglrx" driver makes it work cleanly. The trouble is the Catalyst control centre refuses to recognise my old card so I must do some manual configuring to make sure both the DVI and VGA monitors are capable of the correct screen resolution (both 1280x1024) and a dual display. It used to be easier to just edit the existing xorg.conf file and add another resolution and so forth, but now there are automatic xorg.conf.d directories (more than one) with scant documentation. Creating a generic xorg.conf with a terminal command creates every setting imaginable. What I want to do is create the simplest conf file which just tells the system the following: My VGA monitor can do 1280x1024 60Hz The two monitors together may be 2560x1024 width The VGA monitor on the right I might need to specify Xinerama if it's needed Thank you. I don't think I need to bore you with log files, but please ask for further info. Mike

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• Terminal proxy or screen without terminal emulation

  - by ZyX

  How can I make terminal applications immune to terminal emulator close, but still able to use all virtual terminal features? I see this must be something like screen, but without VT100 terminal emulation, something which will just apply whatever application does with "terminal proxy"'s terminal (like outputting something to stdout/stderr or using stty to set terminal options) to the terminal this proxy runs in. // I know about screen and altscreen on, but it makes either this (screen with TERM=screen): or this (screen with TERM=rxvt-unicode): while I want this (rxvt-unicode without screen): I have figured out that everything looks fine if I compile rxvt-unicode with USE=-xterm-color (in fact vim looks like on the second picture even without screen if I add this USE flag) and set TERM=screen-256color, but I do not like this workaround because it actually changes colors and I can't be sure that it will always change them only this way:

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• GNU screen, how to get current sessionname programmably

  - by Jimm Chen

  [ This can be considered step 2 of my previous question Is it possible to change GNU screen session name after created? ] Actually, I'd like to write a script that can display current screen session name and change current session name. For example: sren armcross It will change the session name to armcross (ARM gcc cross compiler) and output something like: screen session name changed from '25278.pts-15.linux-ic37' to 'armcross' So, the key question now is how to get current session name. Not only for display the old session name, but according to Is it possible to change GNU screen session name after created? , I have to know it(pass to -d -r) before I can change it to something else. Can we use $STY for current session name? No. $STY will not change after you have changed the session name to a user-defined one. However, for command screen -d -r <oldsessname> -X sessionname armcross should be the user-defined name(if ever defined) instead of $STY, otherwise, screen spouts error "No screen session found." Maybe, there is a verbose way, use screen -list to list all sessions(user-defined name listed), then, match the pid part from $STY against those listed sessions and we will find current session's user-defined name. It should not be so verbose for such a straightforward question. Don't you think so? The -d -D and -r -R options seems to expose too much implementation detail to screen's user. It seems, to rename a session, you have to detach it, then do the rename, then reattach it. Right? My env: opensuse 11.3, GNU screen 4.00.03 (FAU) 23-Oct-06 Thank you.

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• searching for replace broken laptop screen

  - by eran

  hey, i have a laptop with 16'' wide screen, but the screen is broken and i want to buy only the screen and replace it.. my laptop is: HP Pavilion dv6-1050us what i know about the screen is that it's model number 512357-001 "16inch widescreen BrightView BV display panel IMR, with web camera and microphone". I did find some screen which seems to be the one but i'm not sure and dont want to spend money for the wrong screen, can any one help please? thanks, eran

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• GNU screen, how to get current sessionname programmatically

  - by Jimm Chen

  [ This can be considered step 2 of my previous question Is it possible to change GNU screen session name after created? ] Actually, I'd like to write a script that can display current screen session name and change current session name. For example: sren armcross It will change the session name to armcross (ARM gcc cross compiler) and output something like: screen session name changed from '25278.pts-15.linux-ic37' to 'armcross' So, the key question now is how to get current session name. Not only for display the old session name, but according to Is it possible to change GNU screen session name after created? , I have to know it(pass to -d -r) before I can change it to something else. Can we use $STY for current session name? No. $STY will not change after you have changed the session name to a user-defined one. However, for command screen -d -r <oldsessname> -X sessionname armcross should be the user-defined name(if ever defined) instead of $STY, otherwise, screen spouts error "No screen session found." Maybe, there is a verbose way, use screen -list to list all sessions(user-defined name listed), then, match the pid part from $STY against those listed sessions and we will find current session's user-defined name. It should not be so verbose for such a straightforward question. Don't you think so? The -d -D and -r -R options seems to expose too much implementation detail to screen's user. It seems, to rename a session, you have to detach it, then do the rename, then reattach it. Right? My env: opensuse 11.3, GNU screen 4.00.03 (FAU) 23-Oct-06 Thank you.

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• how to preform an activity at the android lock screen?

  - by John

  I would like to perform an activity at the key guard screen, but the only way I can find to do so is to disable the key guard, do my activity, then re enable the key guard. This would be ok if it didn't cause the key guard screen to flash off and on (disable makes it disappear then re enable brings it back). I am wondering how I can perform an activity with it still being displayed? Kinda like how when the alarm goes off it shows a pop-up which is displayed over the key-guard screen?

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• Isometric screen to 3D world coordinates efficiently

  - by Justin

  Been having a difficult time transforming 2D screen coordinates to 3D isometric space. This is the situation where I am working in 3D but I have an orthographic camera. Then my camera is positioned at (100, 200, 100), Where the xz plane is flat and y is up and down. I've been able to get a sort of working solution, but I feel like there must be a better way. Here's what I'm doing: With my camera at (0, 1, 0) I can translate my screen coordinates directly to 3D coordinates by doing: mouse2D.z = (( event.clientX / window.innerWidth ) * 2 - 1) * -(window.innerWidth /2); mouse2D.x = (( event.clientY / window.innerHeight) * 2 + 1) * -(window.innerHeight); mouse2D.y = 0; Everything okay so far. Now when I change my camera back to (100, 200, 100) my 3D space has been rotated 45 degrees around the y axis and then rotated about 54 degrees around a vector Q that runs along the xz plane at a 45 degree angle between the positive z axis and the negative x axis. So what I do to find the point is first rotate my point by 45 degrees using a matrix around the y axis. Now I'm close. So then I rotate my point around the vector Q. But my point is closer to the origin than it should be, since the Y value is not 0 anymore. What I want is that after the rotation my Y value is 0. So now I exchange my X and Z coordinates of my rotated vector with the X and Z coordinates of my non-rotated vector. So basically I have my old vector but it's y value is at an appropriate rotated amount. Now I use another matrix to rotate my point around the vector Q in the opposite direction, and I end up with the point where I clicked. Is there a better way? I feel like I must be missing something. Also my method isn't completely accurate. I feel like it's within 5-10 coordinates of where I click, maybe because of rounding from many calculations. Sorry for such a long question.

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• 12.04 black screen crash on flash video with Firefox

  - by rahi

  I just started using ubuntu a few months ago and recently upgraded from 11.10 to 12.04. After a few minutes of watching any video online (StumbleUpon video, YouTube and others), I get a black screen. I am unable to do anything, but reboot at this point (to my limited knowledge). So far, I've tried updating the Adobe Flash plugin via Flash Aid (Firefox Add-on), but that doesn't seem to have worked.

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• SDL 1.2 reports wrong screen size

  - by Aaron Digulla

  I have a multi-monitor setup with two displays, both 1920x1200. In games, I can only select resolutions 1920x1200 (like 2560x1200) which makes games unusable. Full screen doesn't work either because it switches one display to 800x600 which means I can't reach the close button... I have to kill the game and then, I have to restore my desktop because all windows are moved/resized. How can I force SDL to use any resolution that I want?

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• double vision screen after installing ubuntu

  - by Heather Torgensen

  I'm not much of a techie but my friend who is a software engineer suggested I download ubuntu after my Windows computer was not connecting to certain Wi-Fi networks ( including the one at my house). He said it may be because of the drivers. I did download ubuntu but now the home screen is totally off center.Any ideas? Step by step instructions would be awesome since I'm not super great at this! Thank you!!

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• Screen will not load in 11.04 alpha 3

  - by Saad Inam

  After updating from 10.10, there were no problems everything updated fine. I restarted the computer and selected Ubuntu from the boot menu but nothing came. it only shows a a black screen and it allows me to type. I have a feeling that this might be to do with the graphics driver, but how would i get a driver if nothing shows? I have ati radeon 5450 which runs with Catalyst Control Center on Windows. How can fix this?

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• Why does the login screen fail to appear?

  - by a different ben

  My system: Dell Precision T3500 nVidia Quadro NVS 295 Ubuntu 12.04 x86_64 (3.2.0-32) Essential problem: On boot my system won't get past the splash screen. I can switch to another virtual terminal and log in, I can also ssh from another system -- so it appears that the problem might be with the display manager. How can I diagnose and fix this problem? More info: From a VT I can issue sudo lightdm restart, and this will bring up the login screen and and I can continue from there. So I do have access to my system. Update-manager recently updated a number of packages, including a bunch of x11 and xorg packages, some nVidia drivers, rpcbind, etc etc. My boot log (if that is any guidance) says the following: fsck from util-linux 2.20.1 fsck from util-linux 2.20.1 fsck from util-linux 2.20.1 fsck from util-linux 2.20.1 rpcbind: Cannot open '/run/rpcbind/rpcbind.xdr' file for reading, errno 2 (No such file or directory) rpcbind: Cannot open '/run/rpcbind/portmap.xdr' file for reading, errno 2 (No such file or directory) /dev/sda1: clean, 597650/1525920 files, 3963433/6103296 blocks /dev/sda7: clean, 11/6406144 files, 450097/25608703 blocks /dev/sda5: clean, 158323/1525920 files, 1886918/6103296 blocks /dev/sda8: clean, 250089/107929600 files, 111088810/431689728 blocks Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd * Starting AppArmor profiles [80G [74G[ OK ] Loading the saved-state of the serial devices... /dev/ttyS0 at 0x03f8 (irq = 4) is a 16550A * Starting ClamAV virus database updater freshclam [80G [74G[ OK ] * Starting Name Service Cache Daemon nscd [80G [74G[ OK ] * Starting modem connection manager[74G[ OK ] * Starting K Display Manager[74G[ OK ] * Starting mDNS/DNS-SD daemon[74G[ OK ] * Stopping GNOME Display Manager[74G[ OK ] * Stopping K Display Manager[74G[ OK ] * Starting bluetooth daemon[74G[ OK ] * Starting network connection manager[74G[ OK ] * Starting Postfix Mail Transport Agent postfix [80G [74G[ OK ] speech-dispatcher disabled; edit /etc/default/speech-dispatcher * Starting VirtualBox kernel modules [80G [74G[ OK ] * Starting the Winbind daemon winbind [80G [74G[ OK ] saned disabled; edit /etc/default/saned * Starting anac(h)ronistic cron[74G[ OK ] * Stopping anac(h)ronistic cron[74G[ OK ] * Checking battery state... [80G [74G[ OK ] nxsensor is disabled in '/usr/NX/etc/node.cfg' Trying to start NX server: NX 122 Service started. NX 999 Bye. Trying to start NX statistics: NX 723 Cannot start NX statistics: NX 709 NX statistics are disabled for this server. NX 999 Bye. * Stopping System V runlevel compatibility[74G[ OK ] * Starting Mount network filesystems[74G[ OK ] * Stopping Mount network filesystems[74G[ OK ] * Stopping regular background program processing daemon[74G[ OK ] * Starting regular background program processing daemon[74G[ OK ] * Starting anac(h)ronistic cron[74G[ OK ] * Stopping anac(h)ronistic cron[74G[ OK ]

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• no login screen: problem with lightdm or plymouth?

  - by a different ben

  When I boot up my system, I don't get a login screen, just the boot log scrolling by, repeating after a while lines like this: * Starting anac(h)ronistic cron [ OK ] * Stopping anac(h)ronistic cron [ OK ] I can change to another virtual terminal, and start lightdm from there with sudo lightdm restart or sudo start lightdm. Other people with similar problems had just lightdm in their /etc/x11/default-display-manager. I've checked mine and it has /usr/sbin/lightdm in there, so that's not the problem.

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• average screen ratio

  - by sam

  Im building a portfolio website that uses full screen background images slideshow that are cropped to fit using a js plugin. To give the minimum amount of cropping whats the best ratio to make the images ? ie i know 13" macbooks are around 13:7 (when taking into account about 100px for the browser bar) but does that scale up on 15",24",17" displays ? I know there are charts showing the most common dimensions but they just show a range of sizes and thats categorized by groups rather than actual dimensions

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• Blank screen after upgrading to 10.04 to 10.10

  - by Raj

  I have upgraded my desktop to Lucid from karmic online through update manager - facing problems, request your help. After completing upgrade and then reboot, I am getting blank screen. Tried to login but unsuccessful. Also the data backup done pre-upgrade was partial, I donot want to lose data. Request to please provide steps to rollback without losing data as I am new to ubuntu. Also I have a single partition. Graphics card is agp-8x integrated (hp d530)

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• Linux slackware 13 automatically lock, ktorrent start automatically

  - by Nick

  Can someone tell me what to do for lock automatically slackware 13 if not used for n minutes ? What can i do to start automatically the ktorrent (a bittorrent program for linux) on system starts on slackware 13 ?

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• What can i do if i made a bootable usb stick, but it doesn't work properly?

  - by eff

  Currently i have ubuntu 11.10 as an os and i want ubuntu 12.04 lts. I made a bootable usb stick with the program 'startup disk creator'. Everything went well (i choose the language, and then i choose ' install'), the purple screen with the title 'ubuntu' come up, it started loading too. After a time black screen come up with white letters last sentence was something like: panic occured, switching back to text. I tried it several times, the same thing happens. i tried to click on ' trying ubuntu from usb too, but it didn't work either . Please help me!

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• Is there a way to sort my windows within a screen session?

  - by jv1975

  I use screen and have ssh sessions open to a number of different machines from within my screen session. I'd like to keep them in order, for obvious reasons. Often I'll have to connect to a new machine which alphabetically/numerically should fit in between two existing windows. I can't find any way to reorder the windows other than with the "number" command, which swaps my current window with that at the number I specified. So adding a new window to the 15 I already have and then sticking it at position 2, while keeping all the other windows in order as well is cumbersome, to say the least, requiring swaps for all windows past #2. Is there anyway to sort the windows alphabetically? Or a way to "shift" all windows after a certain point up one spot? Or any other suggestions to insert a new window at an arbitrary point while still maintaining the order of all other windows? Thanks!

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• black screen after waking up from suspend

  - by Daniel De Leon

  running 11.10 and on wake up after being suspended (for a long time or 2 seconds, doesn't matter) I am presented with a black screen that just has a purple bar (about the size of the top menu bar). As far as I can tell the system is unresponsive to anything outside of a manual restart by pressing the power button on the tower, after which it starts normally. using the most up to date graphics driver, also tried switching to a different version, nothing. just switched back to Linux and this is really giving me a headache, I would really like this to work. Any help would be greatly appreciated.

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• Sony bravia screen resolution problem when using Docky

  - by takethemoneyrun

  This is what it looks like: When the laptop (MSI u100) starts up it takes up all available space on the TV screen. About a second after logging in the black bar at the bottom appears. The strange thing is that as you can see the menus can be visible over it, also the dock (Docky app), and any fullscreen application (not maximised, but fullscreen). So what would be the problem here? The source of the problem is the Docky Application. Any ideas?

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