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creitve
Asked: 2010-08-25 03:44:29 +0800 CST

How to set up good video support on radeon 3850

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So, I've got radeon 3850 agp card. It seems that all videos and graphics are handled by CPU, according to cpu usage. All effects are enabled and working(like compiz), but videos and 3d are extremely slow and low-fps, though I use proprietary ati drivers. What do I need to do to get normal fps? Ready to answer additional questions.

So, I think 10.7 finally installed, but nothing new happend. Hi-res video still 0.3 fps.(video is 1280x720, screen is 1920x1080).

Decided to show my xorg.conf:

Section "ServerLayout"
    Identifier     "aticonfig Layout"
    Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
EndSection


Section "Monitor"
    Identifier   "aticonfig-Monitor[0]-0"
    Option      "VendorName" "ATI Proprietary Driver"
    Option      "ModelName" "Generic Autodetecting Monitor"
    Option      "DPMS" "true"
EndSection

Section "Device"
    Identifier  "aticonfig-Device[0]-0"
    Driver      "fglrx"
    BusID       "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier "aticonfig-Screen[0]-0"
    Device     "aticonfig-Device[0]-0"
    Monitor    "aticonfig-Monitor[0]-0"
    DefaultDepth     24
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection

EndSection

Thanks everyone, I also wanted to ask: everybody tell me, that this parameter:

creitve@localhost:~$ glxinfo|grep render
direct rendering: No (LIBGL_ALWAYS_INDIRECT set)
OpenGL renderer string: ATI Radeon HD 3850

must be "yes", but I didn't manage to enable it. What do I need to get it running? Im sure, it's 100% related to my problem, right?

hardware video ati

2 Answers

  1. Best Answer

    90% of the time this type of problem is resolved by doing a purge and reinstall of the driver stack, because either the mesa GLX driver or the kernel driver is messed up. https://wiki.ubuntu.com/X/Troubleshooting/FglrxInteferesWithRadeonDriver

    As far as open source drivers, xserver-xorg-video-ati in Lucid supports 2D but not 3D acceleration for this hardware, so depending on your definition of 'good' it likely isn't going to suffice for you.

    3D support is coming in Maverick, although there's still a lot that's incomplete. See http://www.x.org/wiki/RadeonFeature for a detailed breakdown of the 3D support with this driver. (Your card fits under the R600 column.)

    Note that with the open driver and AGP hardware, sometimes you have to tweak AGPMode either in BIOS or (for -ati) in the xorg.conf. (See 'man xorg.conf' or 'man radeon').

    • 1

  2. Have you tried the open source drivers? I have a slightly newer card (I think) and the proprietary drivers were slow, buggy, and leaked memory. The open drivers work perfectly. Have a look for the xserver-xorg-video-radeonhd packages.

    • -1