Search Results

Search found 68825 results on 2753 pages for 'problem'.

Page 443/2753 | < Previous Page | 439 440 441 442 443 444 445 446 447 448 449 450  | Next Page >

• Macbook Pro (2011) Install of 12.10

  - by William Fleming

  I have installed Ubuntu on another partition on my macbook only to find when i boot using refit im greeted with a screen that reads Missing Operating System I have chosen to install grub on the root partition so i assume after the EFI boot-loader has done its stuff it will then load grub in the " / " partition. Any thoughts on this i couldn't find anyone with this problem. I can only assume its a problem with the GRUB install on the partition. But i have tried to reinstall it and it did not work....? Any thoughts would greatly appreciated. Bill

  Read the article

• Point line collision reaction

  - by user4523

  I am trying to program point line segment collision detection and reaction. I am doing this for fun and to learn. The point moves (it has a velocity, and can be controlled by the user), whilst the lines are strait and stationary. The lines are not axis aligned. Everything is in 2D. It is quite straight forward to work out if a collision has occurred. For each frame, the point moves from A to B. AB is a line, and if it crosses the line segment, a collision has occurred (or will occur) and I am able to work out the point of intersection (poi). The problem I am having is with the reaction. Ideally I would like the point to be prevented from moving across the line. In one frame, I can move the point back to the poi (or only alow it to move as far as the poi), and alter the velocity. The problem I am having with this approach (I think) is that, next frame the user may try to cross the line again. Although the point is on the poi, the point may not be exactly on the line. Since it is not axis aligned, I think there is always some subtle rounding issue (A float representation of a point on a line might be rounded to a point that is slightly on one side or the other). Because of this, next frame the path might not intersect the line (because it can start on the other side and move away from it) and the point is effectively allowed to cross the line. Firstly, does the analysis sound correct? Having accepted (maybe) that I cannot always exactly position the point on the line, I tried to move the point away from the line slightly (either along the normal to the line, or along the path vector). I then get a problem at edges. Attempting to fix one collision by moving the point away from the line (even slightly) can cause it to cross another line (one shape I am dealing with is a star, with sharp corners). This can mean that the solution to one collision inadvertently creates another collision, which is ignored. Again, does this sound correct? Anyway, whatever I try, I am having difficulty with edges, and the point is occasionally able to penetrate the polygons and cross lines, which is undesirable. Whilst I can find a lot of information about collision detection on the web (and on this site) I can find precious little information on collision reaction. Does any one know of any good point line collision reaction tutorials? Or is my approach too flawed/over complicated?

  Read the article

• enemy behavior with boundary to change direction

  - by BadSniper

  I'm doing space shooter kind of game, the logic is to reflect the enemy if it hits the boundary. With my logic, sometimes enemy behaves like flickering instead of changing the velocity. It's like trapped in the boundary and checking for if loops. This is my code for velocity changing: if(this->enemyPos.x>14) { this->enemyVel.x = -this->enemyVel.x; } if(this->enemyPos.x<-14) { this->enemyVel.x = -this->enemyVel.x; } How can I get around this? Its going out of boundary and don't know where to go and after sometimes its coming into field. I know whats the problem is, I dont know how to get around this problem.

  Read the article

• How do I modify the noacpi option?

  - by Sagar Ratnakara Nikam

  I am new to ubuntu and have stared using it since a week. I installed ubuntu server 11.10 on a VM created using VMWare player. Once installed, i tried to install ubuntu desktop using sudo apt-get install --no-install-recommends ubuntu-desktop Now I am unable to boot and i get the following error *PulseAudio configured per-user session After this, nothing happens and the ubuntu server does not boot. I read in another Q&A, the same problem and the solution. Just Installed a CLI system then ubuntu-desktop, does not boot automatically My question is how to modify noacpi option. How do i get into the boot for the ubuntu server? I have read on the net that by hitting the shift button, we can get into the boot options. I tried that, but no success, probably since i am running ubuntu on VMWare Player. Please guide me on how to solve this problem

  Read the article

• Ubuntu 12.10 webapps don't open correctly when using Chromium

  - by Alex

  I have just installed Ubuntu 12.10 completely fresh, the old version of Ubuntu was discarded or overwritten (or whatever you call it). I want to use the Ubuntu webapps with Chromium but I've had several problems. }The first problem is that Chromium won't ask me if I want to install a webapp if I go to a supported site (and I don't already have the webapp installed). The second problem is that when I install the webapp by visiting the site in Firefox, and then I try to open it in Chromium, Ubuntu will open a completely new Chromium icon and window in the Launcher, and the icon will be labeled "Untitled"; also there is no search bar in the new window, only the tab at the top. I've tried using several webapps with Firefox set as the default browser and they work as expected: once the webapp icon is clicked a Firefox window is opened on the Firefox launcher icon, and the window has 'new tab' button and search bar.

  Read the article

• How to detect GLSL warnings?

  - by msell

  After compiling a shader with glCompileShader, I can call glGetShaderiv with GL_COMPILE_STATUS to check if the shader compiled successfully. I can also call glGetShaderInfoLog to get information about possible errors, warnings or other info. The information log returned by this function is unspecified. In a tool where users can write their own shaders, I would like to print all errors and warnings from the compilation, but nothing if no warnings or errors were found. The problem is that the GL_COMPILE_STATUS returns only false if the compilation failed and true otherwise. If no problems were found, some drivers return empty info log from glGetShaderInfoLog, but some drivers can return something else such as "No errors.", which I do not want to print to the user. How is this problem generally solved?

  Read the article

• LL(8) and left-recursion

  - by Peregring-lk

  I want to understand the relation between LL/LR grammars and the left-recursion problem (for any question I know parcially the answer, but I ask them as I don't know nothing, because I am a little confused now, and prefer complete answers) I'm happy with sintetized or short and direct answers (or just links solving it unambiguously): What type of language isn't LL(8) languages? LL(K) and LL(8) have problems with left-recursion? Or only LL(k) parsers? LALR(1) parser have troubles with left or right recursion? What type of troubles? Only in terms of the LL/LALR comparision. What is better, Bison (LALR(1)) or Boost.Spirit (LL(8))? (Let's suppose other features of them are irrelevant in this question) Why GCC use a (hand-made) LL(8) parser? Only for the "handling-error" problem?

  Read the article

• Why is my LAN not working properly ?

  - by ps06756

  I am using Ubuntu 12.04 as my OS. Till yesterday, my LAN was working fine , but after that my LAN is not working properly. What I mean is that it shows that the LAN wire is connected properly, but when I try to open a website it gets stuck on resolving host. I am using the web browser as Google-chrome. Now, when I manually switch off the wired connection and turn it on again, the LAN works perfectly till I open one or two webpages. After that the same problem repeats again. Can anybody, help me with a solution to this problem.

  Read the article

• Atheros AR5BWB222 Wireless Intermittent Connectivity

  - by Bart

  So I recently installed Ubuntu on my Acer Aspire V3-551 laptop. I have an Atheros AR5BWB222 wireless adapter. Everything works fine except for the wireless. I can sometimes connect to the wireless, but most of the time it will be making an attempt to connect and then enver connect. Or it will connect, but it will only stay connected for about 10 seconds before getting disconnected from the wireless. All the other drivers updated through System SettingsAdditional Drivers are fine, even the Ethernet. Its just the problem with the wireless. I've tried a power managment setting, tried looking for additional updates, but nothing fixes my problem. Is there any solution for my particular wireless card?

  Read the article

• Connection timed out when connecting to a website (ubuntu only)

  - by S.C.

  I've been struggling with these problem for months. It happens randomly and it happens on Ubuntu only (12.04). It's about my hosted company website. Some facts: I can ping it I can traceroute it I can dig it I can make a nslookup But whenever I try to open it in Chrome it won't open. I also tried using polipo but got same connection time out issue. I'm connected through a LAN network and I'm experiencing no problem with any other website. Is there a more accurate debugging technique I'm missing other than pinging/tracerouting, etc.?

  Read the article

• Windows VirtualBox can't browse network

  - by Don Kirkby

  I'm running Windows XP as a VirtualBox guest OS under Ubuntu 11.10, and I can't browse the Windows network. It seems like I can connect to some specific network shares, maybe only ones that are already mapped to drives. If I disable ufw, it all works fine, and when I enable it again, the network browsing continues to work. I tried looking at /var/log/ufw.log and saw it blocking port 138. When I allowed that port, then I saw it blocking port 137. I found this answer, and it led me to bug 360975. The bug originally asked for both nf_conntrack_pptp and nf_conntrack_netbios_ns to be added to the defaults, but in comment 11, Jamie decided not to include nf_conntrack_pptp in the fix. I tried adding it in, and it seemed to solve my problem, but then the problem came back. How can I let the Windows guest OS browse the local network?

  Read the article

• Marching squares: Finding multiple contours within one source field?

  - by TravisG

  Principally, this is a follow-up-question to a problem from a few weeks ago, even though this is about the algorithm in general without application to my actual problem. The algorithm basically searches through all lines in the picture, starting from the top left of it, until it finds a pixel that is a border. In pseudo-C++: int start = 0; for(int i=0; i<amount_of_pixels; ++i) { if(pixels[i] == border) { start = i; break; } } When it finds one, it starts the marching squares algorithm and finds the contour to whatever object the pixel belongs to. Let's say I have something like this: Where everything except the color white is a border. And have found the contour points of the first blob: For the general algorithm it's over. It found a contour and has done its job. How can I move on to the other two blobs to find their contours as well?

  Read the article

• File manager (Nautilus) hangs or is ultra slow when listing contents of ssh/sftp server

  - by NahsiN

  I used to use File -- Connect to server to connect to my remote ssh a lot before 12.04/11.10. But now in a fresh install of 12.04, whenever I try to access the remote files, nautilus either always hangs or is ultra slow (5 mins) in listing the directory contents. Most of the time I have to force quit or xkill. Mounting using SSHFS works fine. The ssh server is fast and it works fine via putty, mc (using fish) and normal terminal. I also installed nautilus in Lubuntu 12.04 (virtualbox) and to my surprise, browsing is fast and smooth. Both versions of nautilus are at 3.4.2 thus I am led to believe the problem might be lying somewhere in Ubuntu 12.04. But I am clueless. All suggestions welcome. I really need to solve this problem.

  Read the article

• Gnome 3 freezes when switching workspaces

  - by Bill Cheatham

  I have found an odd problem with Gnome 3 on Ubuntu recently. Under certain circumstances, when switching between two workspaces the whole desktop and user interface will 'freeze' for anything up to 2 minutes; during this time I cannot click anything or interact using the keyboard. Often, the screen will show a 'half-completed' animation of the workspace swapper. This is on Ubuntu 12.04.1 running on a 2-year old Macbook Pro, and it only seems to occur when using an external monitor. This does not seem to be a processor or memory issue, and does not occur every time I switch workspaces. Is this a known problem? What can I do in the short or long term to fix it?

  Read the article

• ATI Radeon HD7000 Series (Laptop) - Switch Mode Between ATI & Intel Integrated GPU. Stuck on Boot Screen On Intel GPU Selection Mode

  - by Monkey Drone

  Laptop Specs: HP Pavilion G6-2020SE GPUs 1) ATI HD7000 Series 2) Intel Integrated OS Installed: x) Ubuntu 12.04 (64 bit) i) ATI Graphics Card Drivers Installed From AMD website. Note: Graphics Card Drivers are Working Fine in 3D Mode. It runs a little Hot as it should since its a GPU. Observation) AMD Catalyst Control Centre Lets me Choose If I want to run the system in HIGH-END (ATI GPU) OR Intel Integrated (Better battery life) While I am on High End GPU Choice, Ubuntu works fine. Problem) But when I switch to Intel Mode in the AMD CCC and reboot the Machine. Ubuntu goes into 'Low Graphics Mode'. The problem is not that it goes into low graphics mode, it is completely expected since I am no longer using the ATI GPU but the integrated Intel GPU. Problem starts with the 'Selection' of the options. During that screen, I have no mouse on the screen (even tried plugging in an external USB mouse) & No Keyboard functionality. Thus I am left completely disabled to choose any option and load into Ubuntu. The Only thing I can do is switch to a terminal and enable ATI GPU through command-line and Ubuntu works Fine again. Is it a bug that there is no mouse/keyboard available to me during the startup of Ubuntu when its launched in Low-Graphics Mode? Any suggestions on how to pass through that? My palms are sweating as I write this down because the ATI GPU is really heating up my laptop. I dont want to boot into Windows or keep it around any longer than necessary. Please advise with help and directions. Sincerely, MonkeyD Edit1: The Answer by Celso has helped me switch to Intel, thus giving me sufficient battery power. Kudos to Celso. Now I can at least use my laptop for the time being without having it burn hair off my skin. I am still looking for answer to my original question of, 'why is lightdm not working properly when I switch to Intel GPU using ATI HD7000 series official drivers provided by AMD'.

  Read the article

• "ODM" - One of the Support team's most valued acronyms

  - by graham.mckendry(at)oracle.com

  If you submit technical service requests (SRs) through the My Oracle Support portal, you may often see the term "ODM" used in updates from our Support team. ODM is an acronym for "Oracle Diagnostic Methodology", which defines a standard problem solving approach that all of Oracle Support uses for every technical SR. ODM provides a number of benefits to the SRs - both for the Support organization and for the customer - including a consistent approach, higher quality, justified solutions, and ultimately faster resolution. Screenshot: Example of an ODM "Issue Clarification" activity in a service request The Oracle Diagnostic Methodology applies to both categories of technical SRs: Consultative (question-answer topics) and Problem-Solution. There are a few KM Notes that describe the steps of ODM, however to keep things simple (and since those KM Notes appear to be a bit outdated), I'll summarize the ODM stages here as follows: Consultative ODM - Three mandatory stages: ODM Question: Clarification of the customer's exact question. ODM Answer: Thorough answer to the customer's question. ODM Knowledge Content: Reference to new or existing knowledge base content, or explanation why the particular SR does not necessarily require knowledge content. Problem-Solution ODM - Eight mandatory stages: ODM Issue Clarification: Clarification of the reported issue, including the symptoms, the steps to reproduce, and an outline of the business impact ODM Issue Verification: Confirmation of the issue being verified based on proof provided by the customer, such as screenshots, log files, or reproducing the issue during an Oracle Web Conference. ODM Cause Determination: Succinct outline of the root cause of the issue. ODM Cause Justification: Explanation as to why the root cause applies to this particular situation. ODM Proposed Solution(s): Succinct outline of the potential solution(s) to resolve the issue. ODM Proposed Solution(s) Justification: Explanation of why the proposed solution(s) will in fact resolve the issue. ODM Solution Action Plan: Detailed numbered instructions on how to execute the proposed solutions. ODM Knowledge Content: Reference to new or existing knowledge base content, or explanation why the particular SR does not necessarily require knowledge content. During these stages, you may see other optional ODM-related activities such as "ODM Data Collection", "ODM Action Plan", "ODM Research", and "ODM Test Case". Again, these structured tags help ensure a uniform methodology across your SRs. With this knowledge you should be able to develop better predictability of what's coming next in your SRs, as well as what you can do to help expedite the resolution process.

  Read the article

• Why Firefox caching work will reset in version 3 but version 16 don't?

  - by huahsin68

  I am developing a web application and have the app deployed into Tomcat server. Tested on IE and Firefox and are working fine. Meaning when I close the browser and reopen the app, the data will be reset. When deploy to Websphere, the data is reset only in IE but Firefox don't. Meaning Firefox will cache the old data. I did try to clear the cache in FF but still failed. I did a test in FF3 and FF16, FF3 will reset the value but FF16 doesn't, I am just so curious why this could happened? Now I don't know whether this is my code problem or is actually the FF caching problem. Any clue on this?

  Read the article

• Slow Resume After suspend having chrome running with many tabs

  - by tUrGoNn

  I usually use chrome and Firefox for browsing. I also open many tabs (around 40 in both some times). The problem I have occurs when I resume the PC after having suspended it: It takes from 2 to 5 minutes sometimes to just get back normally. Does this have to do with memory usage not properly resuming? Is it a bug in Chrome/Firefox or Ubuntu itself? Note that I just upgraded from 10.10 to 11.10 and I was having the problem on both releases, which makes me guess that it has to do with Ubuntu not resuming well if some memory-heavy apps were running before the suspend occured.

  Read the article

• GRUB not showing /dev/sda2 is Windows 7 Loader

  - by Ricardo

  A few days ago I accidentally deleted Ubuntu partition using GParted. I thought Windows 7 would start normally, but I got a "grub-rescue" screen instead. Then, I recreated a partition for Ubuntu (/dev/sda6) and reinstalled it. Ubuntu starts properly now; but GRUB shows me /dev/sda2 is Windows Recovery System (WRS), what is false, since /dev/sda1 is WRS and /dev/sda2 is Windows 7 Loader. I booted using Windows 7 disk and tried to correct this problem automatically and by bootrec.exe /fixboot and /fixmbr, and nothing is able to fix my problem. Yet, Windows (disk) says there is no OS in my computer. What should I do? Will I have to erase my hard disk to get Windows 7 back?

  Read the article

• Ubuntu won't wake after pm-suspend

  - by Matus

  i have ubuntu 12.04 on my Zotac AD-02. Problem is when i run pm-suspend. zotac goes to sleep (it shows red led, and green light is flashing) but when i send magic packet to WOL it hangs ... it stops flashing and LED is green as its turned on but SSH wont run and it won't react to mouse or anything. I've read that sometimes it has something to do with graphics. It is mainly for DLNA and PLEX so i don't use any graphic component so if there is the problem tell me how to disable it :) is there some log or anything i can post? im fairly good at bash but not at all in ubuntu or debian. so i can't find any log. Thanks EDIT: here is lscpi if it helps

  Read the article

• fglrx installation without success - gl_conf issue

  - by Lucio

  I followed the steps of this guide. I've installed the drivers without any problems with sudo dpkg -i fglrx*.deb. The next step is Generate a new /etc/X11/xorg.conf file, but I can't do this due to the following reason: When I enter sudo aticonfig --initial -f the terminal show me this output: sudo: aticonfig: command not found This problem is caused by an error with the symbolics links into the fglrx directory. Look at this section, where you can see -how to fix it- but it doesn't work for me. Why it doesn't? Because after I enter sudo update-alternatives --auto gl_conf the terminal show me this: update-alternatives: error: no alternatives for gl_conf. What I have to do to fix this problem? GC: ATI RadeonHD 6670

  Read the article

• Ways to prevent client seeing my code

  - by James Eggers

  I've got a bit of a strange problem.. Basically, I'm building a fairly complex (un-compiled, interpreted) program in Python. I've been working on most of this code for other purposes for a few months, and therefore don't want my client to be able to simple copy and paste it and then try and sell it (it's worth a fair amount). The other problem is that I need the script to run on a server that my client is paying for. Is there any way I can secure a particular folder on the machine from root access, make it so only one particular can access the directory? The OS is Ubuntu.

  Read the article

• Multi-Part Map Troubleshooting

  - by Michael Stephenson

  Scenario I came across a nice little one with multi-part maps the other day. I had an orchestration where I needed to combine 4 input messages into one output message like in the below table:   Input Messages Output Messages Company Details Member Details Event Message Member Search Member Import   I thought my orchestration was working fine but for some reason when I was trying to send my message it had no content under the root node like below <ns0:ImportMemberChange xmlns:ns0="http://---------------/"></ns0:ImportMemberChange>   My map is displayed in the below picture. I knew that the member search message may not have any elements under it but its root element would always exist. The rest of the messages were expected to be fully populated. I tried a number of different things and testing my map outside of the orchestration it always worked fine. The Eureka Moment The eureka moment came when I was looking at the xslt produced by the map. Even though I'd tried swapping the order of the messages in the input of the map you can see in the below picture that the first part of the processing of the message (with the red circle around it) is doing a for-each over the GetCompanyDetailsResult element within the GetCompanyDetailsResponse message. This is because the processing is driven by the output message format and the first element to output is the OrganisationID which comes from the GetCompanyDetailsResponse message. At this point I could focus my attention on this message as the xslt shows that if this xpath statement doesn’t return the an element from the GetCompanyDetailsResponse message then the whole body of the output message will not be produced and the output from the map would look like the message I was getting. <ns0:ImportMemberChange xmlns:ns0="http://---------------/"></ns0:ImportMemberChange> I was quickly able to prove this in my map test which proved this was a likely candidate for the problem. I revisited the orchestration focusing on the creation of the GetCompanyDetailsResponse message and there was actually a bug in the orchestration which resulted in the message being incorrectly created, once this was fixed everything worked as expected. Conclusion Originally I thought it was a problem with the map itself, and looking online there wasn’t really much in the way of content around troubleshooting for multi-part map problems so I thought I'd write this up. I guess technically it isn't a multi-part map problem, but I spend a good couple of hours the other day thinking it was.

  Read the article

• How do you verify that your prototype/application meets the requirements?

  - by Roflcoptr

  Recently I wrote an small prototype that uses some relatively new technology. Now I wanted to verify if this prototype is usefull and could be used in real world example. But now I have a problem, how can I do that? Normally, it would be a good thing to compare the prototype with already existing similar applications and compare if you perform better, provide better usability, etc. Since I'm not aware of something similar, this is quite difficult Normally, I would see if the requirements of the customers are met. But there aren't any real requirements and no real customers. It as just an idea. So the problem is, how can I get feedback on my prototype to see how it is accepted by potential users and what should be improved in a real implementation?

  Read the article

• Installing along side of Windows 8

  - by Jake

  It appears as though many people are having problems installing Ubuntu along side Windows 8. My problem, however, seems to be sufficiently different to be unique among such problems. I can't get the Ubuntu 12.10 live-USB installer to run. When I boot I get the following four options: Run from this USB Install to disk Check memory (I can't remember the last one) I have tried the top two. Both result in the screen going black briefly then windows 8 booting as per usual. Does anyone know how I may manage to overcome this problem?

  Read the article

< Previous Page | 439 440 441 442 443 444 445 446 447 448 449 450  | Next Page >