Both the Radeon HD6450 as the primary card and the Radeon Fire MV2260 as a secondary card support hardware acceleration.
My Linux installers use the Fbdev device in the xorg.conf.
This allows the installation to work with all supported Radeon cards graphics cards.
This means that hardware acceleration is disabled by default even if you have a card that supports it.
To enable hardware acceleration with compatible cards and to allow the dual graphics card option with a Radeon SI card to work a couple of things need to be done. These I found out after doing the installers and after some upgrades to mesa were introduced into the various Linux distributions.
It is best that they are done manually after initial installation for now as not to break any future Linux upgrades.
First is to prevent the libglamor module from loading. It is loaded if a Radeon SI card is detected and causes xorg to crash.
Second is to remove the xorg.conf so that xorg configures automatically.
Use the following commands
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sudo mv '/usr/lib/xorg/modules/libglamoregl.so' '/usr/lib/xorg/modules/libglamoregl.so.bak'
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak
Once these are done then on rebooting hardware acceleration will be enabled for any video card that supports it.
That is any card from a Radeon 7000 up to a Radeon 6000 series card as well as compatible ATI Fire models .
appturk wrote:I have read that a FireMV 2260 256MB card works well with hardware acceleration under linux. I bought one with pcie 16x there is no hardware acceleration of any kind with this card. Youtube was reported to work well with this card. It does not work at all. It works just like a Radeon HD 6450, aa a lowest common dominator card. I have Ubuntu-mate 16.04.1 with the 4.14.15 Kernel. I may be missing somthing and I sure hope that I am
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