How can I get my graphics card to be recognized in System Info?

Question

I'm trying to save all the variables in my class into NSUserDefaults using objc/runtime. And below is the code I'm using.

NSUInteger count;
Ivar *iVars = class_copyIvarList([self class], &count);
for (NSUInteger i=0; i<count; i++) 
{
    Ivar var    = iVars[i];
    NSString *varName = [NSString stringWithCString:ivar_getName(var) encoding:NSUTF8StringEncoding];
    NSString *varType = [NSString stringWithCString:ivar_getTypeEncoding(var) encoding:NSUTF8StringEncoding];

    if([varType hasPrefix:@"["])
    {
        NSLog(@"Array");
        id var1 = [_manager valueForKey:varName];

        NSLog(@"--- %@", var1);

        NSData *data = [NSData dataWithBytes:&([_manager valueForKey:varName]) length:sizeof([_manager valueForKey:varName])]
        [[NSUserDefaults standardUserDefaults] setObject:[_manager valueForKey:varName] forKey:varName];
    }
    else
    {
        NSLog(@"NonArray");
        NSLog(@"---  %@", [_manager valueForKey:varName]);
        [[NSUserDefaults standardUserDefaults] setObject:[_manager valueForKey:varName] forKey:varName];
    }

}

free(iVars);

The problem is that, when there are only primitive datatypes, the above code works just fine. But, when I try to access a array variable like int[], or float[], it gets crashed with SIGABRT. it is not showing any other messages.

valueForKey doesn't return any values for C arrays.

If anybody know how to load values for C-arrays in runtime, please help.

Thanks in advance,

Suran

Solution 1

it means that it cannot acquire the information because glxinfo is not installed on the system.

Install it by clicking here:

Or by typing:

sudo apt-get install mesa-utils

This is bug 914631.

After installing mesa-util it's providing information about graphic. In my case (Probook 4530s) "Intel® Sandybridge Mobile", while experience index still the same: Standard.

Solution 2

Install Mesa-Utils by running these commands:

sudo apt-get update
sudo apt-get install mesa-utils

Then it will be detected.

Solution 3

For Ubuntu to show the correct information in the details window, You should install the package mesa-utils.

Open a terminal and execute the following command:

sudo apt-get install mesa-utils

Solution 4

I have the same graphics device and the "Unknown Driver" problem. This is not a problem with the driver installation but with the fact that Ubuntu is unable to recognize it properly.

If you can see a properly functioning GUI and not a black and white Command-line screen, then your Graphics Card is working fine.

This issue has been frequently discussed: http://ubuntuforums.org/showthread.php?t=1949097

If the graphics performance appears to be poor it may be simply because Precise does'nt have wobbly windows and other special effects enabled by default (or at least not in low end systems). Download Compiz and enable these effects and animations. They should work fine with Intel GMA Integrated Graphics (they do on mine!).

View more solutions

Comments

[KingofBliss]

Try using objectForKey instead of valueForKey.

[Suran]

But, my class is a subclass of NSObject, not any class like NSMutableDictionary etc, and when I try to use objectForKey it is just showing a warning that, it can't find the method

[Suran]

Hi Justin, thanks for the answer but, I didn't get you. Can you explain, how can I achieve this?

[justin]

@Suran C arrays don't define length, so you need to save the length someplace. So you need to also keep track of the length of the buffer - it's easiest for the class itself to manage the buffer and the buffer's length. So the easy way would be to move the creation of the NSData to the class because it should know the length. Then you can create a convention (I suggested a suffix *property*ForSerialization) for returning deep copies of the buffers as NSData (outlined above). Then you can compose a string from selector+suffix, and then convert that string to a selector to get the data.

[Suran]

Can you post some code regarding this? I'm not able to grasp it. Also, to get the size of the array, can't we just use sizeof operator?

[justin]

@Suran a) I don't know specifically what code you want (to avoid writing everything, which takes time) b) the sizeof operator will not work - it will return the size of a pointer regardless of the number of elements in the array.

[Suran]

The thing is that, what I'm trying to accomplish is to get the value of an C array that is a property of the class 'DataManager' of which, '_manager' is an instance. I've saved the property name and property type into two variables varName and varType respectively. Now, I need to retrieve the state of that C array. I'd be really thankful if you can provide me with some sample code to get the value of the C array.

[Uri Herrera]

To be able to recognize it install mesa-utils , compiz IS already install in 12.04 as Unity IS a compiz plug in, what it's not installed is the settings manager, effects like the wobbly windows are not enabled by default on the installation.

[upapilot]

Unity may be a Compiz plugin but I don't think Compiz Settings Manager is installed by default in Ubuntu.

[Uri Herrera]

Yes that's what i said.

[Uri Herrera]

Get th latest Kernel, the Intel drivers are in the Kernel

[Anwar]

@UriHerrera, please add your comment in a question, i worked

[Uri Herrera]

In a question? I don't undertsand..?

[Anwar]

@UriHerrera, oh, it was a typo. I mean answer. Your answer worked.

[jokerdino]

@UriHerrera Your comment worked for Anwar. Please add your comment as an answer so he can accept it. Thanks.

[TrailRider]

+1 this is a know bug. The card is detected by the system but not shown on the GUI. As stated in the answer installing mesa-uitls will get the card to show. You may also want to see my answer here on installing the texture compression libs that will allow you to play the newer games that require s3tc support.

[user66498]

Thank you for answer, after I install mesa-uitls the system can get the card to show and I will have a look.

[waspinator]

and this is not installed by default, why?