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Thread: Guide to Get the Best Performace from the GMA 500

  1. #5161
    Join Date
    Jul 2009
    Beans
    8

    Re: Guide to Get the Best Performace from the GMA 500

    Ok, I found this and it seems to work for me.

    For some reason, the fn keys are changing the parameters in "/sys/class/backlight/acer-wmi" while the working parameters are those of "/sys/class/backlight/psb-bl"

    At least I can now change it from a terminal

    Quote Originally Posted by bodhi.zazen View Post
    OK, for those having difficulty setting the brightness of the display , good news.

    It can be set by setting /sys/class/backlight/psb-bl/brightness

    Example:

    Code:
    echo 70 | sudo tee /sys/class/backlight/psb-bl/brightness
    You can of course script this, save this script in /usr/local/bin/brightness

    Code:
    #!/bin/bash
    
    RED='\e[0;31m'
    GREEN='\e[0;32m'
    
    if [ $EUID != 0 ]; then
     echo -e "${RED}This script must be run as root (sudo)."
     exit 1
    fi
    
    case $1 in
    
        0)
           echo 100 > /sys/class/backlight/psb-bl/brightness
           ;;
        [1-9])
           echo "${1}0" > /sys/class/backlight/psb-bl/brightness
           ;;
        *)
           echo -e "${GREEN}Usage: brightness n,\nn= 0-9 , 0 = 100 %"
           exit 1
           ;;
        esac 
    exit 0
    You then run it as:

    Code:
    sudo brightness 7
    Last edited by frcarri; March 16th, 2012 at 09:19 PM.

  2. #5162
    Join Date
    Apr 2006
    Location
    Montana
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    Kubuntu Development Release

    Re: Guide to Get the Best Performace from the GMA 500

    Glad you found and liked the script =)
    There are two mistakes one can make along the road to truth...not going all the way, and not starting.
    --Prince Gautama Siddharta

    #ubuntuforums web interface

  3. #5163
    Join Date
    Jul 2009
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    8

    Re: Guide to Get the Best Performace from the GMA 500

    Quote Originally Posted by bodhi.zazen View Post
    Glad you found and liked the script =)
    Yes, I like it. Thank you for it. Sometimes it's hard to find all the information around so many pages in this thread

    It's beyond my skills but maybe you know: is there a way to bind the fn keys to the script?

  4. #5164
    Join Date
    Oct 2009
    Location
    Cheshire, UK
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    121
    Distro
    Ubuntu Development Release

    Re: Guide to Get the Best Performace from the GMA 500

    I have the solution (although I think you have also stumbled across it yourself). I have acer_wmi blacklisted. I ran a quick test and with this module loaded the backlight keys will not work without a workaround such as bodhi has suggested. If you blacklist it then the backlight keys should work fine.

    Hope this helps!

    Edit: this link explains what acer_wmi does...
    Last edited by PilotPaul; March 17th, 2012 at 10:47 AM. Reason: Added link to further info...
    Pilot Paul

  5. #5165
    Join Date
    Jul 2009
    Beans
    8

    Re: Guide to Get the Best Performace from the GMA 500

    Quote Originally Posted by PilotPaul View Post
    I have the solution (although I think you have also stumbled across it yourself). I have acer_wmi blacklisted. I ran a quick test and with this module loaded the backlight keys will not work without a workaround such as bodhi has suggested. If you blacklist it then the backlight keys should work fine.

    Hope this helps!

    Edit: this link explains what acer_wmi does...
    Yes, it helps a lot. Just by removing the module with rmmod it started working

    Thank you very much!

    PS: It's nice to read in your link that it's blacklisted in Aspire One series
    NOTE: The Acer Aspire One is not supported hardware. It cannot work with acer-wmi until Acer fix their ACPI-WMI implementation on them, so has been blacklisted until that happens.

  6. #5166
    Join Date
    Apr 2009
    Beans
    8

    Re: Guide to Get the Best Performace from the GMA 500

    Hi,

    I have installed 12.04 from

    http://blog.bodhizazen.net/linux/ubuntu-gma500-live-cd/

    on my Vaio X11. And it works, except for the fact that gray-tones flicker a bit. (It seems that the Vaio P's has a similar issue, see comments in http://blog.bodhizazen.net/linux/ubuntu-gma500-live-cd/)

    I tried to resolve the problem using the following customized xorg.conf:

    Code:
    Section "Device"
        Identifier "Device0"
        Driver "fbdev"
    EndsectionSection "Device"
    
    Section "Screen"
         Identifier    "Screen0"
         Device        "Device0"
         Monitor       "VAIO-LVDS"
         SubSection "Display"
              Depth     24
              Modes    "1366x768"
         EndSubSection
    
    EndSection
    
    Section "Monitor"
    	Identifier   "VAIO-LVDS"
    	ModelName    "SNY" 
    	Modeline     "1366x768" 74.06  1366 1429 1557 1663  768 768 769 775  -HSync +VSync
    EndSection
    
    Section "DRI"
    	Mode 0666
    EndSection
    
    Section "Extensions"
    	Option "composite" "enable"
    EndSection
    which is an adapted version of the xorg.conf posted by tista once for EMGD.

    It doesn't help, because the modeline is rejected, because it fails some kind of test. Here is part of the /var/log/Xorg.0.log:

    Code:
    ...
    [     8.832] (II) FBDEV: driver for framebuffer: fbdev
    [     8.832] (++) using VT number 7
    [     8.832] (II) Loading sub module "fbdevhw"
    [     8.832] (II) LoadModule: "fbdevhw"
    [     8.833] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
    [     8.833] (II) Module fbdevhw: vendor="X.Org Foundation"
    [     8.833] 	compiled for 1.11.3, module version = 0.0.2
    [     8.833] 	ABI class: X.Org Video Driver, version 11.0
    [     8.833] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
    [     8.833] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
    [     8.834] (**) FBDEV(0): claimed PCI slot 0@0:2:0
    [     8.834] (II) FBDEV(0): using default device
    [     8.834] (==) FBDEV(0): Depth 24, (==) framebuffer bpp 32
    [     8.834] (==) FBDEV(0): RGB weight 888
    [     8.834] (==) FBDEV(0): Default visual is TrueColor
    [     8.834] (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
    [     8.834] (II) FBDEV(0): hardware: psbfb (video memory: 6144kB)
    [     8.834] (II) FBDEV(0): checking modes against framebuffer device...
    [     8.834] (EE) FBDEV(0): FBIOPUT_VSCREENINFO: Invalid argument
    [     8.834] (II) FBDEV(0): 	mode "1366x768" test failed
    [     8.834] (II) FBDEV(0): 	mode "1366x768" not found
    [     8.834] (II) FBDEV(0): checking modes against monitor...
    [     8.834] (--) FBDEV(0): Virtual size is 1366x768 (pitch 1366)
    [     8.835] (**) FBDEV(0):  Built-in mode "current"
    [     8.835] (==) FBDEV(0): DPI set to (96, 96)
    ...
    I also tried other modelines, generated with the gtf command. I always get the same result.

    What else can I try?

    Juerg
    Last edited by Juerg Wullschleger; March 18th, 2012 at 10:30 PM.

  7. #5167
    Join Date
    Jun 2006
    Location
    Parma, Italy
    Beans
    679
    Distro
    Kubuntu

    Angry Re: Guide to Get the Best Performace from the GMA 500

    Well, I've tried http://blog.bodhizazen.net/linux/ubuntu-gma500-live-cd/ on my 1101HA, and the result is still the same. Ever since the psb_gfx module started being added to the kernel (on 11.10) I get kernel panics. Sometimes X starts and works for a minute or two, with a huge screen "wavery effect", equal to what I got with the EMGD drivers and the powersave (underclock) profile. But after that minute or two everything hangs and I end by having to turn the netbook off using the power button, as even the sysreq key isn't recognized.

  8. #5168
    Join Date
    Oct 2010
    Location
    Niigata, JAPAN
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    862
    Distro
    Ubuntu Development Release

    Re: Guide to Get the Best Performace from the GMA 500

    Quote Originally Posted by Juerg Wullschleger View Post
    Hi,

    I have installed 12.04 from

    http://blog.bodhizazen.net/linux/ubuntu-gma500-live-cd/

    on my Vaio X11. And it works, except for the fact that gray-tones flicker a bit. (It seems that the Vaio P's has a similar issue, see comments in http://blog.bodhizazen.net/linux/ubuntu-gma500-live-cd/)

    I tried to resolve the problem using the following customized xorg.conf:

    Code:
    Section "Device"
        Identifier "Device0"
        Driver "fbdev"
    EndsectionSection "Device"
    
    Section "Screen"
         Identifier    "Screen0"
         Device        "Device0"
         Monitor       "VAIO-LVDS"
         SubSection "Display"
              Depth     24
              Modes    "1366x768"
         EndSubSection
    
    EndSection
    
    Section "Monitor"
    	Identifier   "VAIO-LVDS"
    	ModelName    "SNY" 
    	Modeline     "1366x768" 74.06  1366 1429 1557 1663  768 768 769 775  -HSync +VSync
    EndSection
    
    Section "DRI"
    	Mode 0666
    EndSection
    
    Section "Extensions"
    	Option "composite" "enable"
    EndSection
    which is an adapted version of the xorg.conf posted by tista once for EMGD.

    It doesn't help, because the modeline is rejected, because it fails some kind of test. Here is part of the /var/log/Xorg.0.log:

    Code:
    ...
    [     8.832] (II) FBDEV: driver for framebuffer: fbdev
    [     8.832] (++) using VT number 7
    [     8.832] (II) Loading sub module "fbdevhw"
    [     8.832] (II) LoadModule: "fbdevhw"
    [     8.833] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
    [     8.833] (II) Module fbdevhw: vendor="X.Org Foundation"
    [     8.833] 	compiled for 1.11.3, module version = 0.0.2
    [     8.833] 	ABI class: X.Org Video Driver, version 11.0
    [     8.833] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
    [     8.833] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
    [     8.834] (**) FBDEV(0): claimed PCI slot 0@0:2:0
    [     8.834] (II) FBDEV(0): using default device
    [     8.834] (==) FBDEV(0): Depth 24, (==) framebuffer bpp 32
    [     8.834] (==) FBDEV(0): RGB weight 888
    [     8.834] (==) FBDEV(0): Default visual is TrueColor
    [     8.834] (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
    [     8.834] (II) FBDEV(0): hardware: psbfb (video memory: 6144kB)
    [     8.834] (II) FBDEV(0): checking modes against framebuffer device...
    [     8.834] (EE) FBDEV(0): FBIOPUT_VSCREENINFO: Invalid argument
    [     8.834] (II) FBDEV(0): 	mode "1366x768" test failed
    [     8.834] (II) FBDEV(0): 	mode "1366x768" not found
    [     8.834] (II) FBDEV(0): checking modes against monitor...
    [     8.834] (--) FBDEV(0): Virtual size is 1366x768 (pitch 1366)
    [     8.835] (**) FBDEV(0):  Built-in mode "current"
    [     8.835] (==) FBDEV(0): DPI set to (96, 96)
    ...
    I also tried other modelines, generated with the gtf command. I always get the same result.

    What else can I try?

    Juerg
    Hi Juerg..

    Yeah I could confirm that today psb_gfx might ignore any special xorg.confs.... My P seems the same.

    But one thing.
    I didn't experience such "gray-flicker" on any desktop sessions, so let me know that details.. I only have an ugly glitch of "missing mouse pointer" now. IMHO, this would cause GEM "fixed memory object" which must be kept anytime via kzalloc or so, but today this didn't work properly. Then cursor object would be wiped out from gem memory map tackled by any other memory object something like "overlay" object on compositor. So especially on time when "heavy load" comes out, the mouse pointer might be vanished..

    Finally, kernel 3.4 would bring the whole new psb_gfx to us.


    Cheers,
    Tista

  9. #5169
    Join Date
    Apr 2006
    Location
    Montana
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    Re: Guide to Get the Best Performace from the GMA 500

    Quote Originally Posted by jbernardo View Post
    Well, I've tried http://blog.bodhizazen.net/linux/ubuntu-gma500-live-cd/ on my 1101HA, and the result is still the same. Ever since the psb_gfx module started being added to the kernel (on 11.10) I get kernel panics. Sometimes X starts and works for a minute or two, with a huge screen "wavery effect", equal to what I got with the EMGD drivers and the powersave (underclock) profile. But after that minute or two everything hangs and I end by having to turn the netbook off using the power button, as even the sysreq key isn't recognized.
    How did you test the psb_gfx driver is not in Ubuntu 11.10 ?

    You should file a bug report with kernel.org against the psb_gfx driver.
    There are two mistakes one can make along the road to truth...not going all the way, and not starting.
    --Prince Gautama Siddharta

    #ubuntuforums web interface

  10. #5170
    Join Date
    Jul 2011
    Beans
    6

    emgd-dkms for Kernel 3.3?

    Hi,

    are there any patches available yet for compiling emgd-dkms 1.8 or 1.10 on Kernel 3.3?

    -Klaus

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