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ev56o
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PostPosted: Fri Nov 30, 2012 4:11 pm    Post subject: Reply with quote

I use open driver, of course, the ati driver closed is up to 2009 and can' t be compatible with the current kernel.
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bandreabis
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PostPosted: Fri Nov 30, 2012 6:21 pm    Post subject: Reply with quote

ev56o wrote:
I use open driver, of course, the ati driver closed is up to 2009 and can' t be compatible with the current kernel.

Oh, ok!
ati-drivers are the closed ones, the open are xf86-avideo-ati.
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s_bernstein
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PostPosted: Sat Dec 01, 2012 8:23 am    Post subject: Reply with quote

So, after 2 days of reading and tweaking, I have a config, which will lead to a normal performance for a RV250. The following config bumped my card up about 200 fps in glxgears. Also, the sluggish desktop is gone, except for the gnome background fadein during login.

I had to add the following options to the xorg configuration:

Code:

Option  "EnablePageFlip"     "on"
Option  "ColorTiling"        "on"
Option  "EXAPixmaps"         "on"
Option  "BackingStore"       "on"
Option  "AccelDFS"           "on"
Option  "MigrationHeuristic" "greedy"


Some of these could lead to corruptions or freezes, so you have to try yourself. Some hints: ColorTiling is default for r300+ cards, but also works with r200 card. Should improve performance, but on r200 cards makes it worse without EXAPixmaps (?). A hint for who underclock the card - like me - you will probably need more minimum clock now. I had to go from 50MHz GPU clock to 80 MHz to kill occasionally corruptions.

Now I have to figure out, why suspend to ram will lead to a corrupt screen (all black textures) when suspend to disk works flawless.

EDIT:

So, now my suspend is working again. Had to manually set agpmode to 1. Funny thing is, despite switching from agpmode 4 down to 1 - which should be considerable slower - my framerate goes up another 200 fps now topping out just under 1200fps in glxgears with default clocking of 250/270.

So, after all, the open source radeon driver does work for old cards. It just needs days of reading and tweaking to get the performance.
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ev56o
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PostPosted: Sat Dec 01, 2012 12:15 pm    Post subject: Reply with quote

I can t understand, do I have to copy that options in Xorg.conf? What about the kernel configuration? Everything about Kms must be built-in? reading in the forum it looks like someone can have prop ati driver working with the actual kernel, I have a radeon x300se is there a way for do it work?
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ev56o
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PostPosted: Sun Dec 02, 2012 2:43 pm    Post subject: Reply with quote

Can we have some more help please?
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VoidMage
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PostPosted: Sun Dec 02, 2012 5:04 pm    Post subject: Reply with quote

In regard of builtin vs module - things should work fine either way, just remember to have firmware compiled into kernel with builtin.
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ev56o
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PostPosted: Sun Dec 02, 2012 7:21 pm    Post subject: Reply with quote

Firmware? I don' t understand what firmware you mean?
The options above-mentioned must be in the Xotg.conf?
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livibetter
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PostPosted: Sun Dec 02, 2012 8:11 pm    Post subject: Reply with quote

ev56o wrote:
Firmware? I don' t understand what firmware you mean?
The options above-mentioned must be in the Xotg.conf?


Please at least read first half page of the link I posted in my previous post in this thread, the information is all in it for you to have a working X.

Just FYI, this thread is discussing about xf86-video-ati driver, if you are talking about old ATI driver, it's better to open a new thread, though I have no idea the old ATI driver can still run on latest X or not.
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