[LAU] Which kernel do you use?

[Hermann Meyer]

Am 23.01.2015 um 13:43 schrieb Jeremy Jongepier:
> On 01/23/2015 12:59 PM, Hermann Meyer wrote:
>> Hi Jeremy
>>
>> Well, I guess the 3.2 RT will work here as well, just kernels > 3.4
>> started to behave bad.
>>
>> The main reason I would use later kernels, special >3.18 is, that they
>> have a big improvement in the nouveau driver. Lately the 3.19.0-rc5
>> detect my card correct and handle the GPU mem correct.
>>
>> hermann
> Hello Hermann,
>
> Ah nouveau, as I'm using a fairly old nvidia card I'm not having any
> issues with nouveau. But I can always try a newer kernel on my setup if
> you'd like. Are you using the onboard audio or external gear?
>
> Jeremy
>

Well, I'm not really having issues with nouveau, just those error 
messages in dmesg

[   21.627203] [drm] nouveau 0000:01:00.0: illegal object class: 0xa0b5
[   21.627208] [drm] nouveau 0000:01:00.0: Error creating object: -22 
(3/0x0000a0b5)
[   21.627212] [drm] nouveau 0000:01:00.0: illegal object class: 0x90b8
[   21.627215] [drm] nouveau 0000:01:00.0: Error creating object: -22 
(3/0x000590b8)
[   21.627218] [drm] nouveau 0000:01:00.0: illegal object class: 0x90b5
[   21.627221] [drm] nouveau 0000:01:00.0: Error creating object: -22 
(3/0x000490b5)

Which didn't appear with newer Kernels.
Also, I'm just curious about what going on in the newer Kernels, as, 
when I set up this MOBO, it's a work station, no wireless, I've to move 
down the road to older kernels, till I end up at 3.4.104, as the first 
one which works smooth. I use a PCI Creative Labs SB Audigy, onboard 
sound is disabled, but the Nvidia Card provide a Audio output as well. 
I've connected my Monitor via HDMI cable.

With kernel 3.4.104 I can use pulseaudio(sink) in jack  down to 128 
frames/period without Xruns,
but with younger kernels, Xruns appear randomness, regardless of use 
even if pulse is suspend and just jack runs with a dsp load of 0.33%.
I've set CPU freq to performance (in kernel config), I ensure that the 
soundcard own his own IRQ, boost the priory of it, disable 
hyper-threading, disable irqbalancing, but nothing helps.
Non of this tweaks is needed for the 3.4.104/5 - rt kernels. They work 
out of the box, even when my soundcard share a IRQ with a USB hub, no 
problem at all.

However, as I said, I'm just curios about what others here use, I'm 
perfectly fine with 3.4.105-rt129, but still I would experiment more 
with recent kernels, and I like to find out what cause the Xruns, as I 
like to use a newer nouveau driver, .

regards
hermann