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How can I speed up Unity with an ATI card?

Why my computer runs too slow when I install Ubuntu or any other Linux (Debian works better than other distros), but with windows works fine...?

My configuration is: Processor: Intel Celeron CPU 1.70GHz Graphics: Ati Radeon 9250 128 MB HD: Western Digital 120GB RAM: 2GB DDR1 Motherboard: MSI (MS-6566)

Is there anything unsuported by Ubuntu, or any Linux. If so, is there any way to get it work fine (visual effects are not important to me). What do I need to do?

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  • How do we know that this is related to his ATI card?
    – John S Gruber
    Oct 7, 2012 at 17:33
  • Because thats the only "odd" thing about it. I run Unity just fine on machines with slower CPUs and less RAM. Now, I don't go off running a private cloud, but I can use it for basic web browsing and stuff.
    – jrg
    Oct 8, 2012 at 16:40

3 Answers 3

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Ubuntu 11.10 and beyond play well with at least a Dual-Core processor. I recommend you trying some lighter editions, such as Xubuntu, or Lubuntu. Other derivatives from Ubuntu might be elementary OS, (beware as stable release Jupiter 0.1 is outdated, but I still use it on netbooks), or Linux Mint, which you may try the new LXDE version (faster but less eye candy). Good luck! ;)

Also, by hardware I may suppose you are talking of Windows XP, which in that case, minimum requirements are similar to the ones on Lubuntu. Ubuntu 11.10 is slightly heavier for your graphics in comparison to Windows 7 Home Premium.

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You might want to make sure you're using the Radeon Driver, that will provide you hardware acceleration for video and therefore a performance improvement. Hope it helps!

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  • The radeon driver is used by default if fglrx is not installed.
    – Uri Herrera
    Feb 6, 2012 at 21:15
  • Cant find the correct driver, older drivers cant be installed, latest installs, but I cant run aticonfig, i get message "No supported hardware found" something like that...
    – Bart
    Feb 6, 2012 at 21:23
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The problem is Compiz - it's a resource hog. Recent versions of Ubuntu [Desktop] use Compiz which requires a fairly recent CPU & GPU (within the last 3 years) to behave well, otherwise you'll notice severe choppiness and general "slowness." This was my experience with a Pentium 4 and an AGP Radeon. With Ubuntu versions prior to 11.04 I had no problem with that older hardware, but as soon as I upgraded to a version using Compiz that older hardware just became unbearable. I built a new computer with a core i7 and Radeon 7870 and now Ubuntu 12.04 is responsive and snappy. Your Celeron and Radeon 9250 are probably not powerful enough to run all the Compiz eye-candy so you may want to try using a version/distro of Linux that doesn't depend on Compiz, otherwise consider upgrading your hardware.

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