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Thread: Video Slow Issue

  1. #1
    Join Date
    Mar 2011
    Beans
    29

    Video Slow Issue

    All,

    Just installed Ubuntu 12.04 x64 on a new dell T5500. Things run okay in Unity 2d. But in regular mode keyboard response feels like it's almost a second delay. Hitting the Windows key takes a good second for the Unity launcher thing to come up.

    I am pretty new to all this and really don't know where to start. I tried the base Ubuntu driver and two different ones in the additional drivers program.

    if this helps:
    lspci | grep -i nvid
    03:00.0 VGA compatible controller: NVIDIA Corporation G98 [Quadro NVS 295] (rev a1)

  2. #2
    Join Date
    Jul 2012
    Location
    Scotland
    Beans
    260
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Video Slow Issue

    It's probably nothing to do with your video. Can you run:

    Code:
    sudo top
    And find out what's using the most CPU?
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  3. #3
    Join Date
    Mar 2011
    Beans
    29

    Re: Video Slow Issue

    Thanks for the reply.

    I've restarted the whole system clean and still the same issue. nevertheless here is my top

    Code:
    top - 12:43:55 up  3:01,  3 users,  load average: 0.61, 0.65, 0.67
    Tasks: 291 total,   2 running, 287 sleeping,   0 stopped,   2 zombie
    Cpu(s):  0.7%us,  0.8%sy,  0.0%ni, 98.5%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:  24684704k total,  8199228k used, 16485476k free,    82176k buffers
    Swap: 25161724k total,        0k used, 25161724k free,  5469112k cached
    
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND            
     3263 danwilso  20   0 2473m 644m 589m S   15  2.7  40:18.72 VirtualBox         
     3667 danwilso  20   0 1168m 257m  38m S    8  1.1   7:07.08 firefox            
     2532 root      20   0  349m 244m  49m S    7  1.0   5:27.27 Xorg               
     4500 danwilso  20   0  583m  19m  11m S    1  0.1   0:02.90 gnome-terminal     
     2707 danwilso  20   0  659m  16m  11m S    1  0.1   0:32.02 metacity           
     3235 danwilso  20   0  616m  10m 7240 S    0  0.0   0:24.24 VBoxSVC            
        1 root      20   0 24424 2412 1348 S    0  0.0   0:04.56 init               
        2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd           
        3 root      20   0     0    0    0 S    0  0.0   0:00.12 ksoftirqd/0        
        6 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/0        
        7 root      RT   0     0    0    0 S    0  0.0   0:00.02 watchdog/0         
        8 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/1        
        9 root      20   0     0    0    0 S    0  0.0   0:00.02 kworker/1:0        
       10 root      20   0     0    0    0 S    0  0.0   0:00.04 ksoftirqd/1        
       12 root      RT   0     0    0    0 S    0  0.0   0:00.02 watchdog/1         
       13 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/2        
       14 root      20   0     0    0    0 S    0  0.0   0:00.00 kworker/2:0

  4. #4
    Join Date
    Feb 2009
    Location
    USA
    Beans
    3,187

    Re: Video Slow Issue

    How much video RAM do you have and how much have you assigned to Virtual Box? Do things work faster if you close Virtual Box?

    I have seen video performance decrease with virtual box simply open on another workspace.

  5. #5
    Join Date
    Mar 2011
    Beans
    29

    Re: Video Slow Issue

    I can confirm the video issue happens when VirtualBox is or isn't running. Just happened to be working in Office at that moment.

    I had a recommendation to switch to Gnome from Unity, but same issue. In 2d envionments things are great though.


    Video RAM is
    256 MB GDDR3

  6. #6
    Join Date
    Feb 2009
    Location
    USA
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    Re: Video Slow Issue

    Unity 3D and Gnome-shell both use OpenGL effects from your video card. Unity 2D and Gnome classic use the CPU and generally run faster. My guess is that the problem is with the video card. You can try to install Compizconfig-Settings-Manager and turn some of the Unity effects off, but if Gnome-shell doesn't work very well either, then you may be better off sticking to 2D.

    For 2D environment, you can also use KDE (disable effects), XFCE or LXDE.

  7. #7
    Join Date
    Mar 2011
    Beans
    29

    Re: Video Slow Issue

    That's what I have read on a couple forums too. It's disappointing as I was under the impression this was a supported video card.

    Any recommended video cards? I don't need anything fancy at all I just prefer a visually appealing interface. The 2d interface isn't something I want to look at for 8 hours a day.

  8. #8
    Join Date
    Sep 2011
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    Behind you!
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    551
    Distro
    Ubuntu 12.04 Precise Pangolin

  9. #9
    Join Date
    Feb 2009
    Location
    USA
    Beans
    3,187

    Re: Video Slow Issue

    I had reasonable performance on Nvidia GT 210 (with 1GB of RAM). I also have used Unity 3D with great success on GTX260, GTX250, GTX570. My guess is that GTX550 will work great too as well as the 400 series (430, 450, 460 ... ).

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