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

[Brad Fuller]

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.
>>>
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>>
>> 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