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Author Topic: Kernel 3.6.11  (Read 43776 times)

Offline bmarkus

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Re: Kernel 3.6.11
« Reply #30 on: April 01, 2013, 01:02:39 AM »

What was the problem?
I saw that you made a new wifi package for the 3.6.11, do you think that it was a development in the kernel, or was it your new package that solved the problem?


Do not know exactly, maybe new Broadcom firmware. Anyhow, it works :)
Béla
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Offline sbp

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Re: Kernel 3.6.11
« Reply #31 on: April 01, 2013, 03:02:46 AM »
Hi bmarcus

I think that there is a problem somewhere.

As reported I can now play music nicely via wifi using the analoq output on the raspberry - and the cpu usage is only about 2-4% for the player.

But if I then use a USB-DAC, the cpu usage increase to about 50% for the player and the music is breaking up.
With the old picore build on 3.2.27 the use of a USB-DAC did not increase the cpu usage, and it was kept low at about 3%

Can you see the same?

Steen

EDIT:
If the USB-DAC is used without the wifi USB dongle the CPU usage is low again about 2-3%.
So it seems like USB-DAC and USB WiFi is not a good combination?
« Last Edit: April 01, 2013, 03:07:49 AM by sbp »

Offline bmarkus

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Re: Kernel 3.6.11
« Reply #32 on: April 01, 2013, 03:25:56 AM »
Hi bmarcus

I think that there is a problem somewhere.

As reported I can now play music nicely via wifi using the analoq output on the raspberry - and the cpu usage is only about 2-4% for the player.

But if I then use a USB-DAC, the cpu usage increase to about 50% for the player and the music is breaking up.
With the old picore build on 3.2.27 the use of a USB-DAC did not increase the cpu usage, and it was kept low at about 3%

Can you see the same?

Steen

EDIT:
If the USB-DAC is used without the wifi USB dongle the CPU usage is low again about 2-3%.
So it seems like USB-DAC and USB WiFi is not a good combination?

I do not have an USB WiFi stick so can't paly with it.
Béla
Ham Radio callsign: HA5DI

"Amateur Radio: The First Technology-Based Social Network."

Offline sbp

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Re: Kernel 3.6.11
« Reply #33 on: April 02, 2013, 08:49:05 AM »
Hi.

I'm having trouble with the new kernel. I have this repeating USB keyboard problem that I have been reading about at the raspberry forum.
I did not have this problem with the 3.2.27 kernel. Maybe this have some relation to the USB dac and USB wifi problem?

Fortunately there seems to be some development in this area, http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=39175 so hopefully it will be solved shortly.

Steen

Offline bmarkus

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Re: Kernel 3.6.11
« Reply #34 on: April 02, 2013, 10:28:30 AM »
Hi.

I'm having trouble with the new kernel. I have this repeating USB keyboard problem that I have been reading about at the raspberry forum.
I did not have this problem with the 3.2.27 kernel. Maybe this have some relation to the USB dac and USB wifi problem?

Fortunately there seems to be some development in this area, http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=39175 so hopefully it will be solved shortly.

Steen

Well. the latest stable Pi kernel is 3.2.27, 3.6.11 is still a development release. USB driver was a mess according to kernel guys not able to handle higher speeds for example with external HDD's, etc.

What is interesting that I see keyboard issues, for example pressing function keys a digit instead of function key action via SSH not only with directly connected keyboard which show a different bug, not USB and not Xorg.
Béla
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Offline sbp

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Re: Kernel 3.6.11
« Reply #35 on: April 02, 2013, 12:27:31 PM »
Hi.

I'm having trouble with the new kernel. I have this repeating USB keyboard problem that I have been reading about at the raspberry forum.
I did not have this problem with the 3.2.27 kernel. Maybe this have some relation to the USB dac and USB wifi problem?

Fortunately there seems to be some development in this area, http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=39175 so hopefully it will be solved shortly.

Steen

Well. the latest stable Pi kernel is 3.2.27, 3.6.11 is still a development release. USB driver was a mess according to kernel guys not able to handle higher speeds for example with external HDD's, etc.

What is interesting that I see keyboard issues, for example pressing function keys a digit instead of function key action via SSH not only with directly connected keyboard which show a different bug, not USB and not Xorg.


I have also noticed this via ssh. Even if I copy a text block via ssh, it can be partly garbled.

Steen

Offline mocore

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Re: Kernel 3.6.11
« Reply #36 on: May 03, 2013, 12:03:45 PM »
I have also noticed this via ssh. Even if I copy a text block via ssh, it can be partly garbled.

Steen

i also get 'partly garbled.' text with terminal now and then   

Offline bmarkus

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Re: Kernel 3.6.11
« Reply #37 on: May 04, 2013, 04:08:33 PM »
I have also noticed this via ssh. Even if I copy a text block via ssh, it can be partly garbled.

Steen

i also get 'partly garbled.' text with terminal now and then

True. I will make a release with 3.8.8 kernel soon which looks better.
Béla
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Offline mocore

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Re: Kernel 3.6.11
« Reply #38 on: May 05, 2013, 04:11:22 AM »

i also get 'partly garbled.' text with terminal now and then
True. I will make a release with 3.8.8 kernel soon which looks better.

is any chance of finding a 'fix' for this in 3.6.11 ?
or put another way
any suggestion how to identify the cause of this problem ?


Offline bmarkus

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Re: Kernel 3.6.11
« Reply #39 on: May 05, 2013, 04:24:05 AM »

is any chance of finding a 'fix' for this in 3.6.11 ?
or put another way
any suggestion how to identify the cause of this problem ?

Shortly no. Current Raspbian with 3.6.11 is working normally. One way would be to compare Raspbian and piCore kernel config and modules. However 3.6.11 is still tagged as development version and there is 3.8.8 which look better, no reason to waste time for and old dev kernel which will die before born.
Béla
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"Amateur Radio: The First Technology-Based Social Network."

Offline courtjester

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Re: Kernel 3.6.11
« Reply #40 on: May 06, 2013, 07:11:42 PM »
The latest kernel is now 3.8.11.

Doug

Offline bmarkus

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Re: Kernel 3.6.11
« Reply #41 on: May 07, 2013, 12:05:27 AM »
The latest kernel is now 3.8.11.

Doug

Current statement at http://elinux.org/RPi_Kernel_Compilation

Quote
rpi-3.8-y - This is a Alpha development branch based on the current vanilla kernel( GIT rebased) . It will eventually replace the 3.6 branch.

At the time of writing, the exact version is 3.8.8 ( 22-04-2013 ).

Béla
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Offline courtjester

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Re: Kernel 3.6.11
« Reply #42 on: May 07, 2013, 11:11:12 AM »
That statement is out of date. If you actually go here:

https://github.com/raspberrypi/linux/tree/rpi-3.8.y

and look at the comment for the Makefile, you will see that 3.8.y was updated to 3.8.11 6 days ago. I can confirm this because I downloaded and compiled and ran the kernel and ended up with 3.8.11.

Doug.