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by marsman2020
Tue Jul 24, 2012 1:38 am
Forum: Troubleshooting
Topic: USB packet loss.
Replies: 253
Views: 61838

Re: USB packet loss.

Popcornmix posted a "highly experimental" patch related to allocation of host channels for periodic transactions at https://github.com/raspberrypi/linux/issues/29 I found that this patch resolved issues I had using a Logitech wireless mouse (also a low speed device) on a powered hub. You might try i...
by marsman2020
Tue Jul 24, 2012 1:29 am
Forum: Raspbian
Topic: Kernel and distro source download.
Replies: 17
Views: 6960

Re: Kernel and distro source download.

There is documentation for building the kernel from git at http://elinux.org/RPi_Kernel_Compilation. I was able to successfully set up a cross compiler on an x86 machine, clone the kernel branch, apply an experimental USB patch, compile the kernel+modules, and move them to the Pi using mostly what w...
by marsman2020
Tue Jul 24, 2012 1:26 am
Forum: Raspbian
Topic: The USB Hub / Internet problem
Replies: 5
Views: 1574

Re: The USB Hub / Internet problem

*Assuming* you have a good power supply (If you are in the US, I recommend the HP Touchpad wall wart, which is 5.3V/1A. The extra voltage helps make up for the polyfuses. I checked mine on an oscilliscope under load. HP has them for $5. Don't use the USB cable that comes with it though, is has very ...
by marsman2020
Wed Jul 18, 2012 6:27 pm
Forum: Raspbian
Topic: Official raspbian distribution -- SPI devices?
Replies: 9
Views: 25880

Re: Official raspbian distribution -- SPI devices?

You need to load the 'spidev' module to get userspace spi device access, in the same way the i2c-dev module provides userspace i2c access.

Try "modprobe spidev".
by marsman2020
Wed Jul 18, 2012 12:20 am
Forum: Raspbian
Topic: Chromium browser build failure
Replies: 46
Views: 14566

Re: Chromium browser build failure

The last version of Chromium I was able to test on the Pi was the version that is in the squeeze repo pointed to by the original 4-19-2012 Debian Squeeze image.

It seemed a tad faster then Midori, so I don't really understand the slowness that you are seeing.
by marsman2020
Fri Jul 13, 2012 12:46 am
Forum: Raspbian
Topic: Congrats on the front-page Raspbian announcement!
Replies: 1
Views: 800

Congrats on the front-page Raspbian announcement!

I saw the post on the front page of the raspberrypi.org website, and I wanted to say 'congratulations' to mpthompson, plugwash, asb, and everyone else who has worked on Raspbian for the past few months, and on getting it packaged up for the Pi using the new scripts. The pace of software development ...
by marsman2020
Tue Jul 10, 2012 4:42 pm
Forum: Troubleshooting
Topic: Network problems and hangs... losing faith... (solved)
Replies: 114
Views: 45388

Re: Network problems and hangs... losing faith...

Those are I documented my findings in https://github.com/raspberrypi/linux/issues/29, but have yet to receive any response from anyone officially involved with the Pi. A little annoyed at that given I spent quite a few hours troubleshooting, borrowing the oscilloscope, etc. We are tracking that issu...
by marsman2020
Mon Jul 09, 2012 7:52 pm
Forum: Troubleshooting
Topic: smsc problems
Replies: 2
Views: 798

Re: smsc problems

I think you're probably seeing a device driver issue. The USB drivers for the host chip on the Pi's SoC are...not good. I've documented my troubleshooting in https://github.com/raspberrypi/linux/issues/29. Over a month and no response from anyone involved with the RPi. My solution was to use a wired...
by marsman2020
Mon Jul 09, 2012 4:43 pm
Forum: Troubleshooting
Topic: Midori won't connect to internet
Replies: 46
Views: 13007

Re: Midori won't connect to internet

Still no response from anyone involved with the Pi kernel on my bug, it's been over a month.

Still new cases of similar issues popping up.
by marsman2020
Mon Jul 09, 2012 4:32 pm
Forum: Troubleshooting
Topic: Network problems and hangs... losing faith... (solved)
Replies: 114
Views: 45388

Re: Network problems and hangs... losing faith...

I think what you are seeing may be a software issue, not a hardware issue. I've seen networking drop when using a powered hub with keyboard/mouse attached. Starting the GPM console mouse service or X Windows killed the networking. I used an oscilloscope to verify the voltages on my Pi were within sp...
by marsman2020
Thu Jun 28, 2012 7:33 pm
Forum: Troubleshooting
Topic: USB, Keyboard, Network problems with Debian beta and 4 PSU
Replies: 13
Views: 4725

Re: USB, Keyboard, Network problems with Debian beta and 4 P

Can you please add your findings to the bug on github about USB+network issues - https://github.com/raspberrypi/linux/issues/29
by marsman2020
Fri Jun 22, 2012 11:21 pm
Forum: Automation, sensing and robotics
Topic: I2C 16 Channel PWM/Servo Breakout - Working
Replies: 15
Views: 36842

Re: I2C 16 Channel PWM/Servo Breakout - Working

I'm going to push forward with making a PiBot using this controller. An early parts list/description. The goal is to keep things inexpensive and use what I have around the house. Chassis: <Insert easily available thin plate building material here> Power: -1 4-AA battery holder -1 1-AA battery holder...
by marsman2020
Fri Jun 22, 2012 4:32 pm
Forum: Automation, sensing and robotics
Topic: I2C 16 Channel PWM/Servo Breakout - Working
Replies: 15
Views: 36842

Re: I2C 16 Channel PWM/Servo Breakout - Working

A fellow makerspace member just did a large (144 channels) PWM driver setup with 3 SPI interface shift register 48 channel PWM drivers, for a massive LED art project. After watching what was required to make the SPI chips work (and helping a little with getting it running), I decided to go with I2C ...
by marsman2020
Fri Jun 22, 2012 2:02 pm
Forum: Troubleshooting
Topic: startx causes USB devices to fail
Replies: 3
Views: 1366

Re: startx causes USB devices to fail

This could be a software issue, see http://www.github.com/raspberrypi/linux/issues/29
by marsman2020
Thu Jun 21, 2012 6:45 pm
Forum: Automation, sensing and robotics
Topic: I2C 16 Channel PWM/Servo Breakout - Working
Replies: 15
Views: 36842

I2C 16 Channel PWM/Servo Breakout - Working

I have successfully attached an NXP PCA9685 16-channel PWM controller breakout (http://www.adafruit.com/products/815) to my Pi, and used the userspace i2cset command to change the registers around and move a servo. I used the new armel Debian Wheezy with bootc's 3.2.20 r1 kernel from http://www.boot...
by marsman2020
Wed Jun 20, 2012 1:11 am
Forum: Raspbian
Topic: MATE for Raspbian
Replies: 145
Views: 93168

Re: MATE for Raspbian

I've found it to be very page-dependent. One thing that helped a lot was going into the Extensions menu and turning on the AdBlock plugin for Midori, which removes a lot of taxing things from web pages. Firefox has bloated a lot since it's beginning as Phoenix. I'd expect Midori to be faster. On the...
by marsman2020
Tue Jun 19, 2012 11:02 pm
Forum: Raspbian
Topic: MATE for Raspbian
Replies: 145
Views: 93168

Re: MATE for Raspbian

Sorry to hear about your continued USB issues, Mike. I found a mouse/keyboard that works with my hub. The mouse does drop connection and re-discover every few minutes as you describe, but it doesn't seem to impact it's usability... Unfortunately I still have not received any reply on my github bug a...
by marsman2020
Sat Jun 16, 2012 9:34 pm
Forum: Raspbian
Topic: raspbian kernel
Replies: 55
Views: 14455

Re: raspbian kernel

What would the best method be for me to use bootc's 3.2.19 kernel with Raspbian?

I'd like to play with the I2C and SPI drivers.

Can I just install the .deb that he has provided at http://www.bootc.net/projects/raspberry-pi-kernel/?
by marsman2020
Fri Jun 15, 2012 2:58 pm
Forum: Troubleshooting
Topic: Problem with network eth0: kevent 0
Replies: 8
Views: 2395

Re: Problem with network eth0: kevent 0

What is the make/model/specs of the power supply you are using to power your Pi?

What USB devices (including hubs) do you have attached?

Is the network dropping in the console or in X/LXDE?
by marsman2020
Fri Jun 15, 2012 2:56 pm
Forum: Troubleshooting
Topic: Midori won't connect to internet
Replies: 46
Views: 13007

Re: Midori won't connect to internet

I had similar issues with my Logitech wireless mouse and powered hub. I did eventually find a cheapo mouse the kind of works on the hub, but connecting the Logitech mouse directly to the Pi without my powered hub also solved the problem. Is there any chance you'd be willing to create a github accoun...
by marsman2020
Fri Jun 15, 2012 12:01 am
Forum: Troubleshooting
Topic: Network freezing up? + mouse
Replies: 4
Views: 1047

Re: Network freezing up? + mouse

You may be running into a bug with the USB on the Pi. See https://github.com/raspberrypi/linux/issues/29.

Can you try a different powered hub?

Does the network connection die only in X/LXDE or does it die in the console as well?

Were all 3 mice Logitech mice?
by marsman2020
Thu Jun 14, 2012 11:53 pm
Forum: Troubleshooting
Topic: Midori won't connect to internet
Replies: 46
Views: 13007

Re: Midori won't connect to internet

What device(s) do you have attached to your Pi's USB ports? Please be as specific as you can about model numbers. Can you open a terminal (LXTerminal) in the menu and type 'dmesg' while you are trying to access the internet from Midori, and tell us if you see any error messages? If you type a URL in...
by marsman2020
Thu Jun 14, 2012 11:51 pm
Forum: Raspbian
Topic: raspbian hangs on heavy network traffic
Replies: 15
Views: 2872

Re: raspbian hangs on heavy network traffic

How long is the load applied before the hangup occurs? I have not had this issue... A suggestion: for testing network load, I run python3 on another machine on my network, and use 'python -m http.server 8000' to create a simple http server. I picked a random ~100 MB .zip to use as a test download. T...
by marsman2020
Wed Jun 13, 2012 9:13 pm
Forum: Raspbian
Topic: raspbian kernel
Replies: 55
Views: 14455

Re: raspbian kernel

If you have not seen this topic yet there are some interesting kernel patches being evaluated which result in at least a doubling of the SD card read speed. See http://www.raspberrypi.org/phpBB3/viewtopic.php?p=98578#p98578 Looks very promising and hopefully it will eventually speed up all our rpi ...
by marsman2020
Wed Jun 13, 2012 7:01 pm
Forum: Troubleshooting
Topic: Debian Squeeze Network Issues
Replies: 47
Views: 7812

Re: Debian Squeeze Network Issues

I see lots of threads on this forum right now with the OPs problems not actually being solved, so I don't know if there really is a good troubleshooting process at this point. Especially related to these weird USB issues. Even the gentleman coordinating the Raspbian armhf build for the Pi is still h...

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