Modèles : ................
GPU : ..................
Commentaire :.............................

The Catalyst Linux driver supports X-Video right now but many users are currently troubled with tearing issues. AMD's Unified Video Decoder 2 (UVD2) may finally be supported on Linux this month with XvMC and HD video support, but that has yet to be officially announced so you will just have to wait and see what comes about with this Linux video support.

man radeonhd | cat
$ man radeonhd | cat
RADEONHD(4)                                                        RADEONHD(4)



NAME
       radeonhd - AMD GPG (ATI) R5xx/R6xx video driver

SYNOPSIS
       Section "Device"
         Identifier "devname"
         Driver "radeonhd"
         ...
       EndSection

DESCRIPTION
       radeonhd  is  an  Xorg  driver  for AMD GPG (ATI) R5xx/R6xx based video
       cards.

       RADEONHD is still very much work in progress.

       At the time of this writing, radeonhd has the following  major  limita-
       tions:

       · NO support for 2D & 3D acceleration, no support for Xvideo.

       · No TV, Component, and HDMI connector support so far.

       · Suspend  &  Resume  is pretty much untested. Often it just works, but
         your milage may vary.

       · After using the fglrx driver, the display can get very  jittery  with
         radeonhd.   Also suspend & resume will probably fail.  A reboot fixes
         this problem in most cases,  sometimes  a  powercycle  is  necessary.
         Unloading the kernel module is typically not enough.

       A more up-to-date list can be found on the wiki page.


SUPPORTED HARDWARE
       The  radeonhd  driver  supports  video cards based on the following ATI
       chips:

       RV505   Radeon X1550, X1550 64bit
       RV515   Radeon X1300, X1550, X1600; FireGL V3300, V3350
       RV516   Radeon X1300, X1550, X1550 64-bit, X1600; FireMV 2250
       R520    Radeon X1800; FireGL V5300, V7200, V7300, V7350
       RV530   Radeon X1300 XT, X1600, X1600 Pro, X1650; FireGL V3400, V5200
       RV535   Radeon X1300, X1650
       RV550   Radeon X2300 HD
       RV560   Radeon X1650
       RV570   Radeon X1950, X1950 GT; FireGL V7400
       R580    Radeon X1900, X1950; AMD Stream Processor
       R600    Radeon HD 2900 GT/Pro/XT; FireGL V7600/V8600/V8650
       RV610   Radeon HD 2350, HD 2400 Pro/XT, HD 2400 Pro AGP; FireGL V4000
       RV620   Radeon HD 3450, HD 3470
       RV630   Radeon HD 2600 LE/Pro/XT, HD 2600  Pro/XT  AGP;  Gemini  RV630;
               FireGL V3600/V5600
       RV635   Radeon HD 3650, HD 3670
       RV670   Radeon HD 3690, 3850, HD 3870, FireGL V7700, FireStream 9170
       R680    Radeon HD 3870 X2
       M52     Mobility Radeon X1300
       M54     Mobility Radeon X1400; M54-GL
       M56     Mobility Radeon X1600; Mobility FireGL V5200
       M58     Mobility Radeon X1800, X1800 XT; Mobility FireGL V7100, V7200
       M62     Mobility Radeon X1350
       M64     Mobility Radeon X1450, X2300
       M66     Mobility Radeon X1700, X1700 XT; FireGL V5250
       M68     Mobility Radeon X1900
       M71     Mobility Radeon HD 2300
       M72     Mobility Radeon HD 2400; Radeon E2400
       M74     Mobility Radeon HD 2400 XT
       M76     Mobility  Radeon  HD 2600; (Gemini ATI) Mobility Radeon HD 2600
               XT
       M82     Mobility Radeon HD 3400
       M86     Mobility Radeon HD 3650, HD 3670, Mobility FireGL V5700
       M88     Mobility Radeon HD 3850, HD 3850 X2, HD 3870, HD3870 X2
       RS600   Radeon Xpress 1200, Xpress 1250
       RS690   Radeon X1200, X1250, X1270
       RS740   RS740, RS740M
       RS780   Radeon HD 3100/3200/3300 Series
       RV770   Radeon HD 4800 Series; Everest, K2, Denali ATI FirePro
....

AMD's MultiView On Linux
[justify]Introduced in the Catalyst 8.8 Linux driver and further stabilized within Catalyst 8.9 was AMD's MultiView technology. MultiView makes it possible to use multiple GPUs on the same system not for Linux CrossFire but for driving multiple display heads. Using MultiView on Linux you can easily drive four, six, or even eight screens. In fact, up to 32 displays are theoretically supported on a single system (permitting you have enough graphics cards and PCI Express slots). MultiView also allows for OpenGL acceleration across all displays and does not rely upon Xinerama. In this article we are taking a brief look at this multi-GPU multi-monitor feature catered towards AMD's workstation customers.

As described by AMD, MultiView provides "the ability to utilize GPUs from multiple adapters on an independent multi-display desktop. It allows a user to configure, manage and use a MultiView configuration under Linux and allows OpenGL applications run on any displays driven by multiple GPUs." Right now though there are several caveats when it comes to the support. MultiView will only work on systems that contain two identical FireGL graphics cards that belong to the FireGL V3300, V3350, V3400, V3600, V3700, V5200, V5600, V7400, or V7700 series. With that said, no Radeon graphics cards are currently supported by MultiView. Additionally, MultiView is not compatible with Compiz and it will not work if you are using Xinerama with X.Org. Last but not least, the RandR 1.2 support that was added in Catalyst 8.9 is disabled when using multiple ATI graphics cards.
MultiView can be controlled entirely through AMD's Catalyst Control Center Linux Edition (AMDCCCLE) application. In fact, the interface for it isn't that bad at all and is extremely easy to setup. Even if you are adjusting the layout of the monitors, AMDCCCLE has it all handled and is just as easy (if not easier) to setup compared to TwinView and Xinerama with NVIDIA's control panel.

For our testing we had just setup a simple 4-monitor configuration. You can easily setup more than that but this was a good start. Last month we shared a video of an eight-monitor MultiView setup with full OpenGL acceleration running the open-source FlightGear program. With two graphics cards being needed for our four monitor setup but only having one ATI FireGL V8600, we were left to improvise. When studying AMD's Persistent Configuration Store Data-Base (AMDPCSDB), we discovered a way to exploit the MultiView feature so that it is compatible with the Radeon graphics cards.[/justify]
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