Page 6 of 7 FirstFirst ... 4567 LastLast
Results 51 to 60 of 62

Thread: Testing radeon KMS on Ubuntu

  1. #51
    Join Date
    May 2008
    Posts
    343

    Default

    Quote Originally Posted by highlandsun View Post
    I didn't set any options at all. I dunno why it didn't match UUIDs properly.
    Yes, that is strange. Possibly a bug.
    Which bug tracker? That iso is already 2 weeks old, not even sure if the bug is current any more.
    Right, and with all the stuff happening now (kms remake in -ati master, kms kernel enabled by default in karmic, assorted 2.6.31 issues) it can be some days before we get to make a new CD iso. I had to resort to vesa last night

  2. #52
    Join Date
    Jul 2009
    Location
    Portugal
    Posts
    5

    Default

    Hi! I'm sorry for my ignorance, but what does this KMS feature brings for the radeon cards? I assume this will make the open source drivers better yes? I've a X600 ( RV380 GPU I think ) and since ATI have ceased support for this and other cards with their proprietary driver this could bring some joy into my life, maybe there's still hope for this laptop :P. This feature applies to older GPUs like mine, correct?

  3. #53
    Join Date
    Oct 2007
    Location
    Toronto-ish
    Posts
    7,284

    Default

    KMS on its own allows :

    - faster and more reliable suspend/resume/VT-switch

    - the ability to run the X server without root privileges (so less likelihood of wedging your system),

    - a single graphics driver that is used everywhere. The pre-KMS environment has a variety of different drivers taking turns controlling the hardware, which frequently works well but sometimes doesn't -- suing a single driver for everything also means bootup can be smoother and kernel errors can display messages reliably

    Equally important to you is that KMS is built on top of a common in-kernel memory manager for graphics (GEM/TTM), which is the pre-requisite for a number of other desireable features :

    - DRI2 / Redirected Direct Rendering (flicker-free compositing of 3D windows)

    - higher levels of GL support in the 3D drivers (allows apps/games run which could not run before, allows some already running games to take faster code paths)

    - Gallium3D (think of it as a new, improved hardware driver model inside Mesa), which offers both higher potential performance and a framework capable of supporting other acceleration APIs including video decode
    Last edited by bridgman; 07-05-2009 at 03:21 PM.

  4. #54
    Join Date
    Jul 2009
    Location
    Portugal
    Posts
    5

    Default

    Thank you for the info. I hope this get done soon, I've had problems with resume in the past, and well, the current open-source driver lacks power when it comes to games. Good luck for the developers ( even though they might not be reading this :P ).

  5. #55

    Default

    Anyone expreriences random small freezes with kms? This is on a ATI Mobility Radeon X2300

  6. #56
    Join Date
    Dec 2007
    Posts
    2,277

    Default

    Quote Originally Posted by PapadakosPanagiotis View Post
    Anyone expreriences random small freezes with kms? This is on a ATI Mobility Radeon X2300
    This is probably due to buffer migrations. The new mm code isn't well tuned yet.

  7. #57
    Join Date
    Oct 2007
    Posts
    21

    Default

    I'm trying to get kms with latest karmic kernel and using ppa repo from this post, but i think that is not working because on dmesg i have these lines:
    Code:
    [   13.118824] [drm] radeon default to kernel modesetting DISABLED.
    [   13.119111] [drm] Initialized radeon 1.30.0 20080528 for 0000:01:00.0 on minor 0

  8. #58
    Join Date
    Apr 2008
    Posts
    101

    Default

    Quote Originally Posted by Fenix-TX View Post
    I'm trying to get kms with latest karmic kernel and using ppa repo from this post, but i think that is not working because on dmesg i have these lines:
    Code:
    [   13.118824] [drm] radeon default to kernel modesetting DISABLED.
    [   13.119111] [drm] Initialized radeon 1.30.0 20080528 for 0000:01:00.0 on minor 0
    read the comment on the PPA page

  9. #59
    Join Date
    Jun 2009
    Posts
    21

    Default

    I'm trying to boot the latest 0.16 livecd hosted on your link on a machine with an agp x1950pro.
    I'm getting a 'Failed to initalize radeon. Disabling IOCTL' error during the boot process and the system stops.
    Post #2 says add 'radeon.agpmode=-1' in the kernel command line and ppa says(?) 'radeon.modeset=1'
    I assume this is where I'm going wrong trying to boot the live system, pushing f6 when the cd first boots and adding 'radeon.modeset=1' etc returns an unknown option error as you boot - and I don't know how to continue.

  10. #60
    Join Date
    May 2008
    Posts
    343

    Default

    Boot with radeon.modeset=1 to use KMS and with radeon.modeset=0 to run without. Official Ubuntu kernels currently default to 0, the xorg-edgers kernels default to 1.

    If you have an AGP card, you can force the AGP mode with radeon.agpmode=X where X is 1,2,4,8 (same as the old AGPMode option in xorg.conf, see "man radeon"). You can turn off AGP (and force PCI instead) with radeon.agpmode=-1.

    "modinfo radeon" lists all options for the radeon module. For general boot options, see https://help.ubuntu.com/community/BootOptions

    Ignore the "unknown option" warning, it is a false warning.
    Last edited by tormod; 07-20-2009 at 04:54 AM. Reason: "unknown option"

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •