[mythtv-users] Serious performance issues with Fedora Core 3 & MythTV

[Matt Merkey]

Brad Fuller wrote:

>
>
> Matt Merkey wrote:
>
>> Matt Merkey wrote:
>>
>>> Carl Lewis wrote:
>>>
>>>> I'd lay money you need to recompile the kernel with a few bits as
>>>> modules instead of built-in. Particularly around
>>>> the DRI/AGPART (sp?) area.
>>>> Sorry I'm at work and don't have the details,
>>>>
>>>> Otherwise what was happening to me was that the fglrx driver
>>>> would give a little error message in the Xorg.0.log about
>>>> not being able to load DRI.
>>>> Even though we only need the 2D acceleration the
>>>> only way I could get good performance on my box (similar
>>>> to yours) was with all the 3d acceleration enabled,
>>>> and working.
>>>> Well except openGL overlay of course, as that won't run at the
>>>> same time as the XV overlay (don't you love this driver :-(
>>>> I also had to set the fglrxdriver to use external AGP
>>>>
>>>> Only once all the 3D stuff was working and there were no
>>>> little hiccups in the X log did my performance return to
>>>> close to what it was. Not as good, only close.
>>>> It now runs 30-35% for playback where it was 25-30%
>>>> (Pentium4 1.5GHz box)
>>>>
>>>> Cheers,
>>>> Carl.
>>>>
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>>>>
>>> Bingo... I think we've found the culprit. I'm getting the error you 
>>> mentioned about the DRI module in my xorg log file.
>>>
>>> [drm] failed to load kernel module "fglrx"
>>> (II) fglrx(0): [drm] drmOpen failed
>>> (EE) fglrx(0): DRIScreenInit failed!
>>> (WW) fglrx(0): ***********************************************
>>> (WW) fglrx(0): * DRI initialization failed!                  *
>>> (WW) fglrx(0): * (maybe driver kernel module missing or bad) *
>>> (WW) fglrx(0): * 2D acceleraton available (MMIO)             *
>>> (WW) fglrx(0): * no 3D acceleration available                *
>>> (WW) fglrx(0): ********************************************* *
>>>
>>> So I guess I need to find and install the DRI module? Is this just a 
>>> simple matter of installing an RPM package or is it more complex 
>>> than that?
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>>>
>> Ah whoops, I wasn't reading. Is there any way to get around this 
>> without having to recompile my kernel? I've only done that once 
>> before and I killed a week in the process.
>
>
> If you are using nvidia drivers, you used to have to comment out the 
> dri line in your xorg.conf file. I haven't installed the newer 
> drivers, so maybe you don't have to do that anymore. But, you might 
> check.
>
> brad
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>
Ah, something to try. I'm also going to try rolling back to the 2.6.10 
kernel. From what I've been reading, there are quite a few issues with 
the 2.6.11 kernel and ATI's drivers.