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• Nvidia GeForce Gt-520M-cn on intel dh61ww Ubuntu 12.04

  - by j goseeped

  hi people i hope you can help a little bit , i appreciate your time look: i have a this desktop i7 2600, 8gb ram ddr3, board intel dh61ww, Geforce Nvidia GT520-cn 2Gb ddr3, i just install ubuntu 64bits 12.04 kernel 3.2.0-23-generic , i want to setup two monitors samsung led 22" and get start mi video card 1) i download and installed nvidia driver 295.59 and also try with 302.17 to apt-update and upgrade, apt-get install build-essential linux-headers-$(uname -r), apt-get remove --purge nvidia*, apt-get remove --purge xserver-xorg-video-nouveau, vim /etc/modprobe.d/blacklist.conf blacklist vga16fb blacklist nouveau blacklist rivafb blacklist nvidiafb blacklist rivatv sh NVIDIA.run, sudo service lightdm start, reboot, nvidia-xorgconf 2)after reboot i get 800x600 and nvidia-settings say this. You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run nvidia-xconfig as root), and restart the X server. 3) i change a little bit xorg.conf to set up a resolution to work property 4) i dont have any image in the monito and i dont have any option on Nvidia X server settings lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 520] (rev a1) egrep -i 'glx|nvidia' /var/log/Xorg.0.log [ 12.005] (II) LoadModule: "glx" [ 12.005] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so [ 12.575] (II) Module glx: vendor="NVIDIA Corporation" [ 12.585] (II) NVIDIA GLX Module 302.17 Tue Jun 12 16:22:45 PDT 2012 [ 12.585] (II) Loading extension GLX [ 13.037] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found) [ 13.044] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event10) [ 13.044] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=7 (/dev/input/event9) glxinfo | grep direct Xlib: extension "GLX" missing on display ":0.0". Error: couldn't find RGB GLX visual or fbconfig sorry my english is no very well. and thanks guys

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• Ubuntu boots in read-only filesystem after upgrade!

  - by akatzbreaker

  I got a serious problem here: I recently upgraded to the Latest Version of Ubuntu. Now, I boot to my Ubuntu Partition, and I get a Low-Graphics error! I boot to a Recovery-Mode to see what the Problem is. Then, I try to Fix any Damaged Packages, to run fsck but nothing solved the Problem. Then, from the Recovery Menu, I open a Root Shell. I try to create a File and I understand that the Filesystem is Read-Only. Then, I run: mount -o remount,rw / and it Worked for that Terminal Session! When I go back to recovery, I select to resume Boot Normally but I get the Same Error! a I also tried to Boot to my Root Shell again, remount as Read-Write and Start Gnome from there. It Worked! (But the user is ROOT, and is quite Dangerous!) However, I can't do all this proccess at every boot! Any Solution? (Note that when I try to create a new File in my Ubuntu Partition from another OS, I don't get any Errors!)

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• Grub2 attempting to boot hd1 when it should boot hd0

  - by JoBu1324

  I'm attempting to perform a "normal" install on a USB3 SSD (I don't know if it is noteworthy, but I don't have a swap partition). The installation proceeds normally (I'm installing from a USB2 device I created using LiLi Boot, with a copy of Ubuntu 12.10 64bit that I downloaded directly from the source. The system I'm running Ubuntu on has had a more traditional installation of ubuntu running on it without issue (also 12.10), so I know that everything works A-OK when booting from a 7200RPM internal disk. There are a number of oddities that I've noticed so far, including graphics corruption, but the first and most pressing issue is that Grub2 refuses to recognize the correct hd. From /boot/grub/grub.cfg: if [ x$feature_default_font_path = xy ] ; then font=unicode else insmod part_msdos insmod ext2 set root='hd1,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1 b58ee4f7-d41d-400a-b7b8-18bd1f0ae9d3 else search --no-floppy --fs-uuid --set=root b58ee4f7-d41d-400a-b7b8-18bd1f0ae9d3 fi font="/usr/share/grub/unicode.pf2" fi This is from a 100% fresh install of linux (first boot), which was installed while no hard drives were connected to the system, other than the USB2 LiLi drive. The system refuses to boot unless I change the hd1,msdos1 - hd0,msdos1 in the grub menu at boot, when it is the only disk device connected to the PC. What options are left for me to troubleshoot this issue? I've been racking my brains and taxing the internet trying to dig up something on this problem, but now I'd like to see if the Ubuntu community can rise to the challenge and help me fix this boot problem. This is the second time I've attempted this particular setup. The first time, after days of wasted time, I managed to get it to boot every other boot - i.e. every even boot it would boot into Ubuntu like it was happy; every odd boot it would boot into the BusyBox or Grub prompt. At one point it complained that it couldn't find /dev/disk/by-uuid/[the disk], which I found most perplexing, since the disk was there and booted before and after the occurrence (with intervention).

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• How can I fix my xvinfo?

  - by YumYumYum

  How can i fix my X server/driver? $ xvinfo X-Video Extension version 2.2 screen #0 no adaptors present Additional info: $ uname -a Linux desktop 2.6.32-33-generic #70-Ubuntu SMP Thu Jul 7 21:13:52 UTC 2011 x86_64 GNU/Linux $ lspci 00:00.0 Host bridge: Intel Corporation Device 0100 (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Device 1503 (rev 05) 00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b5) 00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b5) 00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b5) 00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation Device 1c4a (rev 05) 00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 05) 01:00.0 PCI bridge: Integrated Technology Express, Inc. Device 8892 (rev 10) 04:00.0 USB Controller: NEC Corporation Device 0194 (rev 04) Follow up: It seems in 64-bit its a mess doing existing approach. Therefore, after upgrading to 12.04 64-bit this problems in same hardware is resolved (of-course, i have now other drivers problem)

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• Matrices: Arrays or separate member variables?

  - by bjz

  I'm teaching myself 3D maths and in the process building my own rudimentary engine (of sorts). I was wondering what would be the best way to structure my matrix class. There are a few options: Separate member variables: struct Mat4 { float m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44; // methods } A multi-dimensional array: struct Mat4 { float[4][4] m; // methods } An array of vectors struct Mat4 { Vec4[4] m; // methods } I'm guessing there would be positives and negatives to each. From 3D Math Primer for Graphics and Game Development, 2nd Edition p.155: Matrices use 1-based indices, so the first row and column are numbered 1. For example, a12 (read “a one two,” not “a twelve”) is the element in the first row, second column. Notice that this is different from programming languages such as C++ and Java, which use 0-based array indices. A matrix does not have a column 0 or row 0. This difference in indexing can cause some confusion if matrices are stored using an actual array data type. For this reason, it’s common for classes that store small, fixed size matrices of the type used for geometric purposes to give each element its own named member variable, such as float a11, instead of using the language’s native array support with something like float elem[3][3]. So that's one vote for method one. Is this really the accepted way to do things? It seems rather unwieldy if the only benefit would be sticking with the conventional math notation.

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• External TV only allows 640x480 using VGA cable

  - by EdC

  I have Ubuntu precise installed on a MacBook Pro. When connecting to an external television using a VGA style cable the highest resolution available seems to be 640x480. I'm using the proprietary NVIDEA Accelerated Graphics Driver (version current) and attempting to setup the TV using the nvidea-settings tool. I know all the equipment supports higher resolutions because of the following: Prior to rebuilding my machine with precise, the same TV, cabel & adapter gave higher resolutions The same machine & TV when used with a HDMI cable allows higher resolutions Windows laptops with the same cable & TV are able to achieve higher resolutions I'm not sure what to look for next, there are some similar FAQ questions but I'm not sufficiently familiar with the areas involved to know if these are my issue or are safe to try. Specifically: colord problem & my monitor resolution 640*480 with no other options! - is the closest, but as I'm having no problems with the main laptop monitor I'm not sure the described symptoms apply. I can't work out from the answer or Bumblebee site how to determine if nvidia optimus applies to my laptop. Why isn't my monitor's native resolution appearing as an option? - suggests configuring X by hand, but doesn't entirely match the symptoms I'm seeing

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• Unity , libgdx, or something else to develop my first game for Android?

  - by capcom

  I want to start by saying that I absolutely love Unity (even more when I team it up with Blender). I really want to start developing games for Android, but it seems like Unity poses way too many roadblocks in terms of which devices it supports (and even if it does support them, it doesn't work well on all of them). I've been looking around for alternatives, and found something called libgdx. Well, it's nothing like Unity unfortunately, but at least it seems like I may be able to reach a larger audience in the market. I'd like to start by making 2D games, but with 3D graphics (say, imported from Blender). I can do this very easily in Unity, and it seems like it should be alright with libgdx too. But I really want to know if ditching Unity is a smart idea, considering how comfortable I am with it already, and how much I like it. Finally, is libgdx something you would recommend considering my requirements/situation? BTW, I am quite familiar with Eclipse too. Many thanks. Feel free to request further details.

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• How can I get my first-person character in Unity to move to a ledge with an animation?

  - by BallzOfSteel

  I'm trying to get this to happen: The character walks up to a large crate, the player presses a button, and an animation starts playing where the character climbs up on to the crate. (all in first person view). So far I tried this with normal "First Person Controller" Prefab in Unity. My code so far: function OnTriggerStay(other : Collider){ if(other.tag == "GrabZone"){ if(Input.GetKeyDown("e")){ animation.Play("JumpToLedge"); } } } However when i use this on The FPC it will always play from the position the animation is created on. I also tried to create an empty game object, placing the FPC in there. Gives same effect. I also tried just animating the graphics of the FPC alone. This seems to work but since the Character Controller itself is not animated that stays onthe ground. So the whole FPC wont work anymore. Is there anyway i could let this animation play on the local position the player is on at that time? Or can you think of any other logical solution for a grab and climb?

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• BUILD 2013 Session&ndash;Alive With Activity

  - by Tim Murphy

  Originally posted on: http://geekswithblogs.net/tmurphy/archive/2013/06/27/build-2013-sessionndashalive-with-activity.aspx Live tiles are what really add a ton of value to both Windows 8 and Windows Phone.  As a developer it is important that you leverage this capability in order to make your apps more informative and give your users a reason to keep opening the app to find out details hinted at by tile updates. In this session Kraig Brockschmidt cover a wide array of dos and don’ts for implementing live tiles.  I was actually worried whether I would get much out of this session when Kraig started it off with the fact that his background is in HTML5 based apps which I have little interest in, but the subject almost didn’t come up during his talk.  It focused on things like making sure you have all the right size graphics and implementing all of the tile event handlers.  The session went on to discuss the message format for push notification and implementing lock screen notification and badges. As with the other day 1 sessions it was like drinking from a fire hose, but it was good stuff.  Check it out when they post it on Channel 9. del.icio.us Tags: BUILD 2013,Live Tiles,Windows 8.1

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• Ubuntu 12.04 still slow at mounting internal filesystem

  - by Matthew Goson

  I'm using Toshiba laptop with this configuration: - CPU: Core i5, 2.4GHz - RAM: 4GB - Graphics card: Intel - Hard disk: 500GB SATA I installed Ubuntu 12.04 64bit and got the same issue with this guy Very slow boot due to mounting filesytem, I tried all suggestions there but the slow boot issue still here. Here's a part of my dmesg: [ 2.041015] usbhid: USB HID core driver [ 2.101378] usb 1-1.6: new full-speed USB device number 5 using ehci_hcd [ 2.137980] atl1c 0000:04:00.0: version 1.0.1.0-NAPI [ 2.779080] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) [ 22.822597] udevd[381]: starting version 175 [ 22.837954] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 22.850837] lp: driver loaded but no devices found [ 23.003822] Adding 7079096k swap on /dev/sda7. Priority:-1 extents:1 across:7079096k [ 23.407915] mei: module is from the staging directory, the quality is unknown, you have been warned. [ 23.408153] mei 0000:00:16.0: PCI->APIC IRQ transform: INT A -> IRQ 16 [ 23.408160] mei 0000:00:16.0: setting latency timer to 64 [ 23.408211] mei 0000:00:16.0: irq 44 for MSI/MSI-X [ 23.433196] [drm] Initialized drm 1.1.0 20060810 Additional information: my sda1 is a primary NTFS partition, sda2 is a primary ext4 partition which I installed Ubuntu onto. Other partitions are inside an extended partition.

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• What is the breakdown of jobs in game development?

  - by Destry Ullrich

  There's a project I'm trying to start for Indie Game Development; specifically, it's going to be a social networking website that lets developers meet through (It's a secret). One of the key components is showing what skills members have. Question: I need to know what MAJOR game development roles are not represented in the following list, keeping in mind that many specialist roles are being condensed into more broad, generalist roles: Art Animator (Characters, creatures, props, etc.) Concept Artist (2D scenes, environments, props, silhouettes, etc.) Technical Artist (UI artists, typefaces, graphic designers, etc.) 3D Artist (Modeling, rigging, texture, lighting, etc.) Audio Composer (Scores, music, etc.) Sound Engineer (SFX, mood setting, audio implementation, etc.) Voice (Dialog, acting, etc.) Design Creative Director (Initial direction, team management, communications, etc.) Gameplay Designer (Systems, mechanics, control mapping, etc.) World Designer (Level design, aesthetics, game progression, events, etc.) Writer (Story, mythos, dialog, flavor text, etc.) Programming Engine Programming (Engine creation, scripting, physics, etc.) Graphics Engineer (Sprites, lighting, GUI, etc.) Network Engineer (LAN, multiplayer, server support, etc.) Technical Director (I don't know what a technical director would even do.) Post Script: I have an art background, so i'm not familiar with what the others behind game creation actually do. What's missing from this list, and if you feel some things should be changed around how so?

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• Intermittent sound on an Medion Akoya S5610

  - by ej159

  The sound on my machine (Medion Akoya S5610) works intermittently. If I reboot enough times I do get sound. This happened before I upgraded, when running Oneiric too. I have fiddled around with alsa-base.conf, putting in different values for model in options snd-hda-intel model=but still the issue persists (although I get the impression that I am more like to have sound on the next reboot if I have edited that file although I can't be sure of this). Adding index=0 does not help the situation either. I have been thinking that this problem could be related some how to the order that driver modules are loaded. The snd-hda-intel module is also used for the sound card (ALC888) in my graphics card. Could it be that these are some how competing? If so, how do I add a preference when they are using the same module? This is the result of lspci -nn | grep Audio (when sound was not working): 00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03) 01:00.1 Audio device [0403]: Advanced Micro Devices [AMD] nee ATI RV620 HDMI Audio [Radeon HD 3400 Series] [1002:aa28] I've been wrestling with this problem for ages and ages and have spent days looking for answers on forums but to no avail so I would appreciate any help you can give. Many thanks

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• fresh install of ubuntu 12.04 using usb stick booted into tty1?

  - by croc

  I just installed ubuntu 12.04 alternate for the first time to give it a try using a usb stick burned with UnetBootIn. It installed without a problem. But it booted into a tty1 console without booting into a GUI. after loging into the tty1 console i typed 'unity'. it appeared that the system doesn't have unity desktop !!! How can it be solved ? My installation didn't show any error. Something worth mentioning: 1. during installation i had to choose an option saying 'customize the system to your needs' something like that i don't remember correctly with options 'SSH server','Mail Server', 'Ubuntu Desktop',.....,'Manual selection of packages' etc. I chose 'Ubuntu Desktop'. I haven't encountered something like this in ubuntu 11.04. to do an installation of alternate iso using UnetBootIn i used '12.04_Hdmedia' option of that software and had to change file extension of .ude to .udeb in /pool/main/l/linux that i found in Alternate ubuntu cdrom detect to go around with the cdrom detection problem. I have a 945G intel graphics.

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• issues with ASUS S301L ultrabooks

  - by Wuerze

  I just like to tell you what still is a Problem in Ubuntu 14.04 and should be solved for a nice experience of this distribution. Unfortunately I do not have any hints to tell you, because I am just a user and know not much about programming. Anyway, I hope it helps. 1) Intel open source Graphics issues (proprietary) -when attaching HDMI-cable the screen switches to the external monitor and it's fine, but there is no switching back unless restart with HDMI deattached -black screen appears for like 2 seconds as if I would change screen in the settings; frequency increases with intensity of driver use (i.e. videos or video games) 2) hotkeys (commonly recognised) -there is no possibility to adjust brightness with the hotkeys (Fn+F5 and Fn+F6) 3) touchscreen (commonly recognised) -the touchscreen is behaving like a mouse -configuring gestures for the multi touch screen seems to always end in disabling touch pad gestures 4) panel symbols -battery symbol has got a low accuracy while it determines accurately the energy left; only 5 steps of energy are shown by the symbol Thank you all for participating in the solution of these problems! I will stay tuned and edit this list if something has been solved.

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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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• Asus A8V overcurrent

  - by user139710

  This is not as much as a question as it is a note to those out there that upgrade their motherboards with better processors and the like. Here's my story. Recently I upgraded my processor. System specifications: • Asus A8V Deluxe • 4GB RAM • ATI Radeon 3870 AGP graphics card (I believe that's it) Anyway, I decided to put a dual core Opteron 180 in this rig, but the problem was that I needed to update the BIOS to V-1017, and not knowing the consequences, I went up to the Asus site and got the newest, the latest and the greatest, 1018.002 thinking that it was the best for this board, however it wasn't. I used the Asus EXFlash, which makes life a lot easier, flashed the BIOS and all of a sudden I start getting this message: USB overcurrent protection, system shutting down in 15 seconds to protect your system. WELL SHIT... This is a new one on me... I read the blogs, all the posts on this thing, and did all that everyone else did to correct the problem, but nothing helped. So i decided to start from square one, went back to Asus and looked at the BIOS download... OMG... IT WAS A BETA. So, I downloaded the update that was suggested 1017< and installed it and wouldn't you know, it took care of the problem, no more USB overcurrent protection, no more crashing. I write this today to let you all know about this, just in case you have an issue such as this. Well there you all go. Fly safe and eat your vegetables.

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• Problems after installing a plethora of updates

  - by box

  yesterday I decided to install 32-bit Ubuntu on my 64-bit desktop, first of all, is that a problem? After installing, i had around 270 updates to install, according to the update manager. I was having trouble launching a game with WINE, so I thought updating might help. After updating, I restarted my computer, and after a long while it showed me my desktop and the icon's on it, but I didn't get anything else. I didn't have the "taskbar" (not sure what it's called, sue me) on the left side, nor the bar at the top. I also received an error message saying some program had stopped working. I decided to restart my computer again, and that was when it told me that i have to re-configure my drivers, or run in "Low Graphics" mode for one session, amongst other options. Well, I decided to try to revert to the "basic video drivers", which was an option it gave. Restarting the computer gave me the same problem as in the second paragraph. After a few more restarts and a night of restless sleep, here I am trying to start my computer again, only to receive a black screen, and my monitor "going to sleep". I'm sort of stumped here, being new to Ubuntu (desktop, at least) and I really hope this gets fixed without me having to install Ubuntu on yet another partition (I have three other partitions for various things already) tl;dr: Black screen on boot after installing updates.

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• Bad Performance With Games Under Wine in Ubuntu 12.04

  - by Pandem

  I'm somewhat new to Linux. I've dabbled with it before but never more than just experimentation in a VM or dual boot where I almost always reverted back to Windows soon after (more due to a lack of commitment than a dislike for the OS). Anyway my problem is that in the two games (Guild Wars and Team Fortress 2) I've tried so far I get fairly bad performance. Despite both games having a "Platinum" rating I've still been forced to run both in DirectX 8, otherwise they either crash, have texture defects or the UI is missing. By "bad performance" I mean sub-30 FPS where there are some players and regular large framerate drops with video settings on low. Currently in my mind I believe the performance issues are just a problem with the drivers because my graphics card is a AMD 7850 which is virtually brand new and probably not properly supported yet but I'm unsure and would appreciate advice or tips to improve things. I have Ubuntu 12.04 installed and I am usually logged in a Gnome Classic session. I have installed AMD's proprietary drivers (Catalyst version 12.4) and have Wine 1.4 installed. I have used Winetricks to install DX9/DX10 dlls and other things.

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• Translating an object along its heading

  - by Kuros

  I am working on a simulation that requires me to have several objects moving around in 3D space (text output of their current position on the grid and heading is fine, I do not need graphics), and I am having some trouble getting objects to move along their relative headings. I have a basic understanding of vectors and matrices. I am using a vector to represent their position, and I am also using Euler Angles. I can translate one of my entities with a matrix along whatever axis, and I can alter their heading. For example, if I have an entity at (order is XYZ) 1, 1, 1, with a heading of 0, I can apply a translation matrix to get them to talk to 1, 1, 2 fine. However, if I change their heading to 270, they still walk to 1, 1, 3, instead of 2, 1, 2 as I desire. I have a feeling that my problem lies in not translating my matrix from world space to object space, but I am not sure how to go about that. How can I do this? Addition: I am using 3D vectors to represent their current position and their heading (using the three euler angles). For now, all I want to do is have an entity walk in a square, reporting their current position at each step. So, assuming it starts at 10, 10, 10 I want it to walk as follows: 10,10,10 -> 10, 10, 15 10, 10, 15 -> 5, 10, 15 5, 10, 15 -> 5, 10, 10 5, 10, 10 -> 10, 10, 10 My 1 Z unit translation matrix is as follows: [1 0 0 0] [0 1 0 0] [0 0 1 1] [0 0 0 1] My rotation matrix is as follows: [0 0 1 0] [0 1 0 0] [-1 0 0 0] [0 0 0 1]

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• Help Decide between C#/XNA client or Java

  - by Sparkky

  The game runs on a client/server architecture currently setup for TCP, and the client code was built in AS3 to be web based. What we're running into is 3 problems for the client. AS3 has no hardware acceleration so we are having some issues with slowdown when implementing some features TCP is really frustrating for a sidescroller when you're talking with a server. I'm having a heck of a time with the interpolation/extrapolation to make everyone else look smooth while minimizing lag. I would much rather be able to use UDP and throw in something similar to the age old Quake interpolation/extrapolation. No right click I work professionally with C#, and I did all my University (almost 2 years ago) with Java. Java really appeals to me because of the compatability while C# appeals to me because I've heard so much good about XNA and I love visual studio. For a Client/Server based MMOish sidescroller in your opinion should I stick with AS3 and the TCP protocol, or should I abandon some of my audience, ramp up the graphics and hit C#, or journey back to the land of Java. Thanks :D

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• monitor height differences & the mouse going off screen

  - by fastmultiplication

  In ubuntu 10.10 I have a dual monitor setup. I have an nVidia graphics card and am using twinview. One of the monitors is 1024 pixels high and the other is 900. In the monitor configuration screen & in real life, I have them set up side by side, 1024 on the left. The result of this is that when I am on the bottom of the left monitor and move the mouse to the right, it goes into the hidden area below the right monitor's visible area. It seems like it would make a lot more sense for it to be bumped up to the bottom of the right monitor - since one almost never wants to move the mouse into an area of the screen that doesn't show up. And, systems I have used before have been set up that way. How can I set this up? I am not interested in lists of window managers for ubuntu; I would like to know the identity of a particular WM or set of steps I can take to solves the particular problem I have outlined above. Thanks! EDIT: I changed to use two seperate X window monitors, and set them up relatively positioned so that just the corner touches and the mouse can cross there, so the difference in heights doesn't matter.

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• How to rotate a group of objects around a common center?

  - by user1662292

  I've made a model in 3D Studio Max 9. It consists of a variety of cubes, clyinders etc. In XNA I've imported the model okay and it shows correctly. However, when I apply rotation, each component in the model rotates around it's own centre. I want the model to rotate as a single unit. I've linked the components in 3D Max and they rotate as I want in Max. protected override void LoadContent() { spriteBatch = new SpriteBatch(GraphicsDevice); model = Content.Load<Model>("Models/Alien1"); } protected override void Update(GameTime gameTime) { camera.Update(1f, new Vector3(), graphics.GraphicsDevice.Viewport.AspectRatio); rotation += 0.1f; base.Update(gameTime); } protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); Matrix[] transforms = new Matrix[model.Bones.Count]; model.CopyAbsoluteBoneTransformsTo(transforms); Matrix worldMatrix = Matrix.Identity; Matrix rotationYMatrix = Matrix.CreateRotationY(rotation); Matrix translateMatrix = Matrix.CreateTranslation(location); worldMatrix = rotationYMatrix * translateMatrix; foreach (ModelMesh mesh in model.Meshes) { foreach (BasicEffect effect in mesh.Effects) { effect.World = worldMatrix * transforms[mesh.ParentBone.Index]; effect.View = camera.viewMatrix; effect.Projection = camera.projectionMatrix; effect.EnableDefaultLighting(); effect.PreferPerPixelLighting = true; } mesh.Draw(); } base.Draw(gameTime); } More Info: Rotating the object via it's properties works fine so I'm guessing there's something up with the code rather than with the object itself. Translating the object also causes the objects to get moved independently of each other rather than as a single model and each piece becomes spread around the scene. The model is in .X format.

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• Unity is broken after upgrading to 12.10 (Optimus laptop)

  - by SyS

  I upgraded to GNU/Linux Ubuntu 12.10 but have been unable to use Unity properly afterwards. Indeed, I encountered the exact same problem as a lot of people: the Unity side and top bars are not displaying, although in my case, Unity seems completely broken, as I can't even right-click. However, in my case, it's worth noticing that I have an Optimus laptop with a Nvidia graphics card (GeForce GT 540M). Bumblebee and its 'optirun' command is working just fine, as usual, after the upgrade. I tried several things, as resetting Compiz and Unity (with the command 'setside unity') -- which works but I have to do it everytime I boot and it resets all my settings -- updating/reinstalling/reconfiguring my Nvidia drivers as well as bumblebee, trying with Nouveau drivers instead of nvidia-current, check if linux-headers-generic were installed (they were). However, I couldn't reset xorg.conf files as they're just not there. There is neither xorg.conf file, nor its backup in /etc/X11. I think this is where the problem comes from, although I'm far from an expert. Maybe retrieving a xorg.conf file will fix this mess, but I have no idea how to do that. I'm just tired and don't know what to do. So, here I am, begging for your help.

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• What is the standard technique for shifting the frames of a sprite according to user input?

  - by virtual__

  From my own experience, I developed two techniques for changing the sprites of a character that's reacting to user input -- this in the context of a classic 2D platformer. The first one is to store all character's pixmaps in a list, putting the index of the currently used pixmap in an ordinary variable. This way, every time the player presses a key -- say the right arrow for moving the character forward -- the graphics engine sees what's the next pixmap to draw, draws it, and increments the index counter. That's a pretty common approach I believe, the problem is that in this case the animation's quality depends not only on the number of sprites available but also on how often your engine listens to user input. The second technique is to actually play an animation every key press event. For this you can use any sort of animation framework you want. It's only necessary to set the timer, the animation steps and to call the animation's play() method on your key press event handler. The problem with that approach is that is lacks responsiveness, since the character won't react to any input while the current animation is still being played. What I want to know is whether you are using one of these techniques -- or something similar -- in your games, or whether there's a standard method for animating sprites out there that's widely known by everybody but me.

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• Usb stick too slow to benchmark?

  - by user85340

  I have a Core 2 Duo [email protected] with 3GB RAM. After some time using XUbuntu 10.10 on an 8GB stick I decided to switch to 12.04 and put it onto a 32GB stick (Transcend). I use an EXT4 with no journalling, noatime etc set. /tmp and /run is using tmpfs. And it is REALLY slow. MUCH slower than the old Xubuntu on the 8GB stick. Starting takes minutes, all applications "fade" because they respond too slow. I first thought that the NVidia graphics card is responsible for this, because there seem to be some known problems with that. Doing the adjustment (uncheck the sync checkbox) did not help. I believe the root cause is that the access to the USB stick is extremely slow. Running the read benchmark of the disk utility then brought the message "disk is too slow to benchmark"! BUT: When I do the same benchmark with the live CD I get around 20MB read performance and have a very responsive system! So how can I find out what is going one here?

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