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Thread: Radeon driver options?

  1. #1
    Join Date
    Nov 2010

    Default Radeon driver options?

    I was wondering if there is any documentation of some sort that lists all the various driver options one can utilise to adjust various driver options. Xorg.conf is used no more, but I have seen on occasions options such as radeon.dynpm=1 or something like that, which can be entered as a boot parameter to enable dynamic power management. I've also seen "vblank_mode=0 <program>" to disable vsync, or even "RADEON_HYPERZ=1 <program>" which can be entered into the terminal to enable HYPER Z for that specific program. Hence I was wondering if any one knows where to find a comprehensive list of such options, or if such documentation even exists or not.

  2. #2
    Join Date
    Nov 2008


    While the open source driver will work with little problems without an xorg.conf one can use one no problems (on Debian testing anyway. This is particularly usefull when using some weird configuration.

    I recently set up an xorg.conf on Radeon 3870 for a 20 inch monitor that did not send out the EDID data correctly to enable an 85hz refresh rate.

    For the driver options try the radeon manpage, "man radeon'

  3. #3
    Join Date
    Oct 2007


    man radeon and man xorg.conf will give you a good start

  4. #4
    Join Date
    Nov 2010


    Thank you to both Blacksmith and DanL. I had been aware of radeon manual but not for xorg.conf. Shall spend some time learning a few more things.

  5. #5
    Join Date
    Nov 2009


    Hi, this xorg.conf maybe helps you.

    Quote Originally Posted by Danny View Post
    Section "Device"
    Identifier "Configured Video Device"
    Option "ForceGallium" "false"
    # ubuntu 11.04 natty option to choose R600g
    Option "AccelMethod" "XAA"
    # XAA/EXA
    Option "AccelDFS" "1"
    # 1/0 On for PCIE, off for AGP
    # Manpage: Use or don't use accelerated EXA DownloadFromScreen hook
    # when possible.
    Option "AGPMode" "1"
    # 1-8 Does not affect PCIE models.
    Option "AGPFastWrite" "1"
    # 1/0 Does not affect PCIE models. Not recommended.
    Option "GARTSize" "64"
    # 0-64 Megabytes of gart (system) memory used.
    # Wrongly defaults to 8MB sometimes, see your logfile.
    # Bigger seems better.
    Option "EnablePageFlip" "1"
    # 1/0 Increases 3D performance substantially
    # seemingly in XAA mode only
    Option "ColorTiling" "1"
    # 1/0 Increases 3D performance substantially
    # affected stability only positively on my system

    Section "Monitor"
    Identifier "Configured Monitor"

    Section "Screen"
    Identifier "Default Screen"
    Monitor "Configured Monitor"

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