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Thread: HOWTO: Jaunty Intel Graphics Performance Guide

  1. #141
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by psyke83 View Post
    Glad to hear your system is working fine. Did you consider following the guide to see if it may improve performance beyond what you're experiencing now?
    I am definitely tempted but since I don't do much games if at all and Google Earth and other 3d apps that I need seem to be running OK I would prefer not to tinker for the sake of stability. However I also see that most of the issues faced here are with the 945 and 965 chip and few are with G31/35 or others. I may be wrong. Whats your suggestion? This is for my other PC with a G31, my main PC with ATI dual GPU 4850 runs great with drivers from ATI site.

  2. #142
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by Arup View Post
    I am definitely tempted but since I don't do much games if at all and Google Earth and other 3d apps that I need seem to be running OK I would prefer not to tinker for the sake of stability. However I also see that most of the issues faced here are with the 945 and 965 chip and few are with G31/35 or others. I may be wrong. Whats your suggestion? This is for my other PC with a G31, my main PC with ATI dual GPU 4850 runs great with drivers from ATI site.
    I think that the problem is with all chipsets, but the issues are most visible for 9xx and 8xx chipsets (possibly due to the lower performance characteristics of older hardware).

    I totally respect your decision not to test these packages - however, I can guarantee that you are suffering from the MTRR issue. I recommend you follow steps 4 and 5 to create a customized fixmtrr.sh script - this will improve performance and lower CPU usage for video playback on your system - without sacrificing any stability.

    Please confirm the linked bug report if you decide to try this on your system, by the way. Thanks!
    Last edited by psyke83; April 27th, 2009 at 06:45 AM.

  3. #143
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    I've seen a couple other users in this thread mention system lockups using this setup. Mine are sporadic - they typically occur after a couple hours of use. I'm chalking them up to the bleeding-edge kernel, but I thought I might ask if anyone has more specific info about what might be causing them.

  4. #144
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by noobaholic View Post
    I've seen a couple other users in this thread mention system lockups using this setup. Mine are sporadic - they typically occur after a couple hours of use. I'm chalking them up to the bleeding-edge kernel, but I thought I might ask if anyone has more specific info about what might be causing them.
    See: http://www.ubuntu.com/getubuntu/rele...known%20issues

    The first three issues may affect you (of which the third is unrelated to this guide, being an EXT4 bug).

    I recommend you troubleshoot by reducing the variables. Switch back to EXA and see if the crashes stop, switch back to the stock kernel (please note that the official Jaunty kernel is probably more unstable with UXA), then revert to the official drivers. Unfortunately, it's possible that none of these changes will prevent freezes aside from disabling DRI entirely (according to the release notes).

    I only notice crashes when using compiz, so you may also want to try disabling that.
    Last edited by psyke83; April 27th, 2009 at 07:16 AM.

  5. #145
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by psyke83 View Post
    I recommend you follow steps 4 and 5 to create a customized fixmtrr.sh script - this will improve performance and lower CPU usage for video playback on your system - without sacrificing any stability.
    Speaking of which, I made the script but being new to ubuntu how do i get it to run each time i log in?

    EDIT: NVM i got it.
    Last edited by JamesHowlett; April 27th, 2009 at 09:57 AM.

  6. #146
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by psyke83 View Post
    See: http://www.ubuntu.com/getubuntu/rele...known%20issues

    The first three issues may affect you (of which the third is unrelated to this guide, being an EXT4 bug).

    I recommend you troubleshoot by reducing the variables. Switch back to EXA and see if the crashes stop, switch back to the stock kernel (please note that the official Jaunty kernel is probably more unstable with UXA), then revert to the official drivers. Unfortunately, it's possible that none of these changes will prevent freezes aside from disabling DRI entirely (according to the release notes).

    I only notice crashes when using compiz, so you may also want to try disabling that.
    Thanks a lot for all the help. I'm on an ext3 filesystem, so it's not being caused by the fs.

    As I get more time, I'll experiment with some of these variables. One new piece of information: DISABLING compiz actually reliably causes my machine to lock up immediately - but only when I have my external monitor hooked up. I tried disabling it, thinking, like you that it was potentially causing problems. Not sure what to make of the results being the other way around.

  7. #147
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    I just finished completing the instructions and already see some real results in my graphics performance. Everything is just so much quicker, except for Alt+F8 window resizing, which is still choppy and slow. I'm using a Dell Inspiron 1520 with an Intel X3100 graphics card. Thanks for the great HOWTO, psyke83.
    Last edited by rabbit251; April 27th, 2009 at 04:17 PM. Reason: Typo

  8. #148
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Unfortunately the MTRR fix doesn't work for me, here's the relevant outputs:
    Code:
    lspci -v
    00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
    	Subsystem: Fujitsu Siemens Computers Device 1139
    	Flags: bus master, fast devsel, latency 0, IRQ 30
    	Memory at f8000000 (64-bit, non-prefetchable) [size=4M]
    	Memory at d0000000 (64-bit, prefetchable) [size=256M]
    	I/O ports at 1800 [size=8]
    	Capabilities: <access denied>
    The line modified for my values in the fixmtrr.sh script:
    Code:
    echo "base=0xD0000000 size=0x10000000 type=write-combining" >| /proc/mtrr
    The output of fixmtrr.sh script:
    Code:
    Before:
    -------
    reg00: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
    reg01: base=0x0be000000 ( 3040MB), size=   32MB, count=1: uncachable
    reg02: base=0x000000000 (    0MB), size= 4096MB, count=1: write-back
    reg03: base=0x100000000 ( 4096MB), size= 1024MB, count=1: write-back
    reg04: base=0x0bde00000 ( 3038MB), size=    2MB, count=1: uncachable
    
    After:
    ------
    reg00: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
    reg01: base=0x0be000000 ( 3040MB), size=   32MB, count=1: uncachable
    reg02: base=0x000000000 (    0MB), size= 4096MB, count=1: write-back
    reg03: base=0x100000000 ( 4096MB), size= 1024MB, count=1: write-back
    reg04: base=0x0bde00000 ( 3038MB), size=    2MB, count=1: uncachable
    Strangely /proc/mtrr already contains 5 values from the beginning, thus another one can't be added I think.

    Trying to manually add it gives the following error:
    Code:
    sudo -s
    echo "base=0xD0000000 size=0x10000000 type=write-combining" >| /proc/mtrr
    bash: echo: write error: Invalid argument

    There is also a new ppa with the latest stable versions of x-server related packages, recommended for people who want to check out new versions without living at the bleeding edge: https://launchpad.net/~ubuntu-x-swat...ive/x-updates/

  9. #149
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by caish5 View Post
    I keep getting
    bash: echo: write error: Invalid argument
    Any ideas?
    I was getting this too because I put a #!/bin/bash at the top of my fixmtrr.sh script. Take it out and you don't get this error although it seems to still run under bash anyhow. Can somebody explain why this error occurs?

  10. #150
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    Re: HOWTO: Jaunty Intel Graphics Performance Guide

    Quote Originally Posted by psyke83 View Post
    See the second entry of "Known Issues" here: http://intellinuxgraphics.org/2009Q1.html
    So is there any chance a fix will come through for this Virtual size bug? It would be a damn shame if I can't use a second monitor for 6 months until karmic comes out Will I just pick it up as an update from the ppa repo?

    Also, as I said earlier, these fixes make a massive improvement to my machine. However, when I run the fixmtrr.sh script immediately after reboot + X start I get:

    Before:
    -------
    reg00: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back
    reg01: base=0x03f800000 ( 1016MB), size= 8MB, count=1: uncachable
    reg02: base=0x03f700000 ( 1015MB), size= 1MB, count=1: uncachable
    reg03: base=0x0c0000000 ( 3072MB), size= 256MB, count=1: write-combining

    After:
    ------
    reg00: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back
    reg01: base=0x03f800000 ( 1016MB), size= 8MB, count=1: uncachable
    reg02: base=0x03f700000 ( 1015MB), size= 1MB, count=1: uncachable
    reg03: base=0x0c0000000 ( 3072MB), size= 256MB, count=1: write-combining

    i.e. I don't see any change in before/after. So is it true that I don't need to bother with this script?

    Thanks very much psyke83 for your fantastic help here. This poor X performance really is a show-stopper.

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