[Clug-tech] problem with lagging effects in xorg

[Gustin Johnson]

On 10-05-27 05:10 PM, Greg R. Smith wrote:
> On 10-05-27 04:54 PM, Gustin Johnson wrote:
>> On 10-05-27 02:37 PM, Greg R. Smith wrote:
>>   
>>> Hi,
>>>
>>> I've done a bit of research into this - I have a laptop with a mobility
>>> HD5870 and when I got it, I thought "wooo, everything should be soo
>>> fast",
>>> most things are fast, however with composite enabled the effects cause
>>> CPU spikes.
>>>
>>> This is documented, and there are some fixes out there for it, as it
>>> effects
>>> many, many, video cards. Does anyone have any experience with this?
>>> every fix that I've tried has caused my xorg to become unresponsive on
>>>   startup such that I have to boot to single user mode to revert the
>>> changes.
>>> (I can't event ctl-alt out of it.). I think the patch is called the
>>> "backclear" patch.
>>>
>>>      
>> Are you using the radeonhd driver?
>>
>>    
> I do not believe that it is supported, or I couldn't find any reference
> to it being supported.
> 
> I am using the ATI Catalyst driver.
> 
Ungh, the Catalyst drivers are nothing short of terrible.  If your
hardware sports the HD moniker then it should be supported by the
radeonhd driver.  The Catalyst drivers support both the more recent
HDxxxx hardware and the previous generation, the radeonhd driver only
supports the more recent hardware.

The radeonhd driver is open (ATI hired Novel to write it) so it should
be an apt-get/yast/yum install away and no need to compile 3rd party
kernel modules.

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