2x Radeon 6850 Catalyst support?

whackedspinach · 2010-12-26 04:33:27

I just installed two Radeon HD6850 cards in my system, but I can't find any information on whether or not this card is currently supported in the catalyst drivers. If not, what would be the best way to go about setting up 3 monitors? I've tried using the open source drivers and messing with xorg.conf (which I will post tomorrow when I get back to my desktop), but I can't seem to get it right.

EDIT: More information.
I am using 3 monitors.
Left: 1366x768
Middle: 1920x1080
Right 1680x1050

catalyst-test from the AUR works.
This is a xorg.conf that works with the left and right monitors on one card: https://gist.github.com/755642
This is my intended xorg.conf that does not work: https://gist.github.com/755644
END EDIT

Last edited by whackedspinach (2010-12-26 21:08:24)

flamelab · 2010-12-26 04:55:42

xf86-video-ati, afaik, doesn't even support ... a simple display for these cards. Catalyst is supposed to support them.

whackedspinach · 2010-12-26 21:13:55

catalyst-test seems to work. I now have 2/3 monitors working.

Here are my two problems now:
1. I still can't get the second card running another VGA (Right) monitor to work.
This is my current semi-working xorg.conf: https://gist.github.com/755642
This is what I tried to do to make the other card work: https://gist.github.com/755644

Am I trying to set that up right?

2. There is an annoying "Unsupported Hardware" watermark on my screen. I tried to use the script in the wiki (on the Catalyst page) to remove it, but that caused a segmentation fault when trying to run X, so I had to reinstall catalyst-test.

I would really appreciate it if anyone knows how to solve these issues.

flamelab · 2010-12-26 22:35:52

Uninstall catalyst-test and use the unofficial [catalyst] repo, mentioned in the ATI catalyst page in the arch wiki.

whackedspinach · 2010-12-26 23:27:46

Alright, I'm getting somewhere. I was able to open amdcccle and edit "Unsupported Adapter" to use the other monitor. It is set up and uses the correct resolution. I enabled Xinerama. Windows will move to that screen, but not the mouse.
EDIT 2: Now the mouse will move, but it seems to get horribly corrupted and turns into a block of transparent, white, and black pixels. When it is moved back to the other screen it is fine.

However, I can no longer use amdcccle, as it results in a segfault and reboots X whenever I start it. I suppose I'll try reinstalling catalyst-utils to fix that.
EDIT: That doesn't work.
EDIT 2: It only gives a segfault if it is open and I move the mouse.

Also, I still get a segfault on fglrx if I try and use the script in the wiki to remove the watermark.

Last edited by whackedspinach (2010-12-27 00:00:57)

rowdog · 2010-12-27 09:02:56

There's a similar thread about 2 cards + 3 monitors over at Phoronix
http://www.phoronix.com/forums/showthread.php?t=27922

My understanding was that you need to run aticonfig with the -all option in order to configure xorg.conf to see both cards.

whackedspinach · 2010-12-28 07:09:46

rowdog wrote:

There's a similar thread about 2 cards + 3 monitors over at Phoronix
http://www.phoronix.com/forums/showthread.php?t=27922
My understanding was that you need to run aticonfig with the -all option in order to configure xorg.conf to see both cards.

My aticonfig always returns "no supported adapters detected" which I suppose is because ATI doesn't support this card yet.

On the cursor corruption issue:
I tried to enable "SWCursor" in xorg.conf, and while it prevents the corruption, it causes corruption and a disappearing cursor or fullscreen apps (wine running WoW or totem). Someone said it might be a refresh rate problem, but I think all of my refresh rates are set correctly (at 60).

Arch Linux

#1 2010-12-26 04:33:27

2x Radeon 6850 Catalyst support?

#2 2010-12-26 04:55:42

Re: 2x Radeon 6850 Catalyst support?

#3 2010-12-26 21:13:55

Re: 2x Radeon 6850 Catalyst support?

#4 2010-12-26 22:35:52

Re: 2x Radeon 6850 Catalyst support?

#5 2010-12-26 23:27:46

Re: 2x Radeon 6850 Catalyst support?

#6 2010-12-27 09:02:56

Re: 2x Radeon 6850 Catalyst support?

#7 2010-12-28 07:09:46

Re: 2x Radeon 6850 Catalyst support?

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