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by ppuskari
Mon May 20, 2013 5:32 am
Forum: General discussion
Topic: Rasp Pi as a USB extender/repeater ?
Replies: 3
Views: 4448

Re: Rasp Pi as a USB extender/repeater ?

I was wondering if anyone was still doing this. I've used the usbip package for MANY projects now and I've found it basically the ONLY way to get around most USB issues. Not sure what the issue with hub usage is, but it still seems to be more about the 7 device limitation more than anything as well ...
by ppuskari
Mon May 20, 2013 4:46 am
Forum: Troubleshooting
Topic: Possible fix to those with repeating keys on usb
Replies: 6
Views: 2605

Re: Possible fix to those with repeating keys on usb

I haven't seen any updates in a long while. Had DOM continued/finished work on the EHCI usb replacement driver for the RasPi?? I was really excited to hear work of one utilizing the video core model. Or has this been totally fixed with the 512mb model of the RasPI?? I would also be interested if any...
by ppuskari
Wed Mar 13, 2013 2:49 am
Forum: Troubleshooting
Topic: Possible fix to those with repeating keys on usb
Replies: 6
Views: 2605

Re: Possible fix to those with repeating keys on usb

Well during install you MIGHT get lucky enough and be able to just pull the usb cable out of the pi or hub that your keyboard is using then wait a couple seconds, then plug it back in. It may correct the situation. More often than not however it will simply refuse to reconnect until a power cycle. G...
by ppuskari
Mon Mar 11, 2013 10:06 pm
Forum: Troubleshooting
Topic: Possible fix to those with repeating keys on usb
Replies: 6
Views: 2605

Possible fix to those with repeating keys on usb

Just wanted to get it out there since I couldn't find it mentioned anywhere here. If you know you have good power feeding your Pi and your usb keyboard is still throwing random extra repeats or generally uncontrollable. I happened upon a repeatable solution. 1. Make sure you have ssh running already...
by ppuskari
Sun Feb 17, 2013 6:12 pm
Forum: Linux Kernel
Topic: PCM driver / ALSA!
Replies: 12
Views: 10250

Re: PCM driver / ALSA!

Interesting. By default do you have any of the cpu overclock settings enabled? If you do not and are running stock then you might definitely take a look at the config.txt option that removes the automatic speed ladder control. Could be that you are only getting the right sound output when the cpu is...
by ppuskari
Thu Dec 06, 2012 4:31 am
Forum: Troubleshooting
Topic: rpi-update hangs whole system
Replies: 4
Views: 1213

Re: rpi-update hangs whole system

After doing a apt-get update and apt-get dist-upgrade on the pbxinaflash for pi build then rebooting then it actually let me do rpi-update and it downloaded/checked out all 844 files and upon reboot it looks like it is now running build 307. Something to try at least for those having issues with rpi...
by ppuskari
Thu Dec 06, 2012 4:24 am
Forum: Troubleshooting
Topic: rpi-update hangs whole system
Replies: 4
Views: 1213

Re: rpi-update hangs whole system

Interesting. I do not get the hang on stock raspbian but this behavior definitely shows up on the PBXinaFlash/Incredible PBX release on my other Pi. It's not stuck at build 260 Nov 8 I was wondering perhaps if it had to do more with how they customized that release from stock since they do a custom ...
by ppuskari
Wed Sep 26, 2012 2:12 pm
Forum: Raspbian
Topic: New repository component for bleeding-edge firmware
Replies: 27
Views: 20900

Re: New repository component for bleeding-edge firmware

Thanks much for the info! That did the trick! It was driving me nuts and I just didn't find the right file to tinker with.
by ppuskari
Wed Sep 26, 2012 4:41 am
Forum: Raspbian
Topic: New repository component for bleeding-edge firmware
Replies: 27
Views: 20900

Re: New repository component for bleeding-edge firmware

Okay I have run into this before and now I just want to figure out how to fix this somewhat confusing and annoying interaction of apt-get and rpi-update. My scenario is such that I added the 'untested' repository as suggested and that works fine for the most part. THANKS! My issue happens to show up...
by ppuskari
Sat Sep 15, 2012 4:57 pm
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

@Juul - NOPE... My two Pi's work extremely well. It's a Prolific elcheapo 2.5" ide external usb case with my old latpop 2.5" drive in it. It is powered by my CyberPower 4 port hub. The hub is the ONLY device plugged into the Pi. I'll do some speed tests but I suspect it's in the normal range. @pigle...
by ppuskari
Sat Sep 15, 2012 2:11 am
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

@piglet - can you try and turn down the webcam resolution to 320x240 or less? I've had all sorts of issues at 640x480 and the less usb traffic the better when it comes to mouse movement and usb 2.0 webcams at least in my testing. Camorama seems to work the best for me under X at least. Also the web ...
by ppuskari
Thu Sep 13, 2012 4:46 am
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

I guess it tells us the real usb stack is still screwed up.. bummer.. Okay I'll go back to the troubleshooting tree and see where that leads. Time to learn the usbmon stuff it would seem.
by ppuskari
Tue Sep 11, 2012 4:39 am
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

I wish I knew more about the design of a standard USB stack. I also wish someone else might be able to help usblog the USBIP virtual hub system to potentially see what layer it might be happening at. I bring this up because no matter what I try I can not get the usb package loss symptoms to occur if...
by ppuskari
Sat Sep 08, 2012 4:03 am
Forum: Troubleshooting
Topic: Hang on serial port open
Replies: 28
Views: 13117

Re: Hang on serial port open

Okay, I finally have working pl2303, ibm usb keyboard (low power passive 2 port hub), ethernet (onboard), cheap webcam, mVox usb mic/speaker, Prolific chipset usb hd case with 2.5" ide drive, and logitech trackball with a 4 port powered hub, all working great!!!! If it helps anyone I'm using the lat...
by ppuskari
Sat Sep 08, 2012 3:39 am
Forum: Troubleshooting
Topic: huawei e1692 - e156
Replies: 7
Views: 3403

Re: huawei e1692 - e156

Interesting.. Your SD was "fixed" with the latest firmware... Mine was broken in an unusual but related way to your fix... When I updated to the most recent kernel/firmware on September 6, I suddenly was left with a system that ONLY found the SD rca output active after a quick screen flash about 1/1...
by ppuskari
Sat Sep 08, 2012 3:28 am
Forum: Troubleshooting
Topic: 8000 interrupts per second when idle!
Replies: 141
Views: 55083

Re: 8000 interrupts per second when idle!

I have seen it several times and I can make it happen repeatably where if you get a bus reset on the usb stack and especially if that device was on the powered hub. On next reboot the entire hub fails to initialize properly. The fix I see is to power down the pi, power off the hub, then power up the...
by ppuskari
Mon Sep 03, 2012 3:40 am
Forum: Troubleshooting
Topic: 8000 interrupts per second when idle!
Replies: 141
Views: 55083

Re: 8000 interrupts per second when idle!

I am running a pl2303 as well. My cmdlinetxt is showing mf_sched =1 and fiq=1 syncafterdma=0 and llm=1 Build #102 firmware When I plugged the fullspeed pl2303 device into the highspeed hub attached to the upper usb port on the pi, I get the usual split speed issues with the raspi. No dice. and no er...
by ppuskari
Fri Aug 24, 2012 1:18 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: FTDI USB Serial Hangs
Replies: 138
Views: 157258

Re: FTDI USB Serial Hangs

I know this isn't much of a full fix, but I can say that at least for the PL2303 device connected to a USR 56k modem, attaching the PL2303 via USBIP works 100% awesome and with no lag or anything. I just posted my complete test bed in the other forum post on "USB elephant in the room". I know this w...
by ppuskari
Fri Aug 24, 2012 12:59 am
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

I just got home and have been playing with something interesting the last few days. I was able to get the latest USBIP software compiled for the raspi and the new kernel modules built, as well as on amd64 Ubuntu 12.04 On the Ubuntu side I attached: IBM USB keyboard (built in 2 port low power hub) Lo...
by ppuskari
Tue Aug 21, 2012 4:49 am
Forum: Troubleshooting
Topic: Hang on serial port open
Replies: 28
Views: 13117

Re: Hang on serial port open

I haven't tried the rest of these exotics yet with the new kernel but here's all of the "usb" options I could find all in one place. dwc_otg.microframe_schedule=1, sdhci-bcm2708.missing_status=0, sdhci-bcm2708.sync_after_dma=0 dwc_otg.speed=1 I THINK this slows the buss down to low speed? or is it h...
by ppuskari
Tue Aug 21, 2012 4:44 am
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

I'll have to try and see if I can reproduce the failure but I was able to coax a traceback listing after plugging in my bluetooth usb dongle. The main stack trace basically was REALLY unhappy about dma inside the usb stack it looked like... Once I get done building the USBIP modules I'll try and kil...
by ppuskari
Mon Aug 20, 2012 3:10 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: FTDI USB Serial Hangs
Replies: 138
Views: 157258

Re: FTDI USB Serial Hangs

Here's the cross link back to the other forum posting. Please try with the new microscheduler option and new 3.2 kernel. Combined they fixed a few of my usb issues and for the slow-high speed mix issue it at least makes it possible to isolate the misbehaving devices. It's usually 2 not ALL the devic...
by ppuskari
Mon Aug 20, 2012 2:55 am
Forum: Troubleshooting
Topic: Hang on serial port open
Replies: 28
Views: 13117

Re: Hang on serial port open

If you haven't already downloaded and installed via rpi-update or manually grab the new 3.2 kernel and activate the new microscheduler code. It does fix SOME issues and might fix your hang. It doesn't fix the multiple low speed devices on hub issue, but it does highlight WHICH devices are having con...
by ppuskari
Mon Aug 20, 2012 2:26 am
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 265435

Re: USB - the Elephant in our Room

Thanks Dom and the Pi gang for getting these usb fixes and kernel updates out. Going to 3.2.x has FIXED the CIFS timeout 4 errors completely for me. Only odd bit is now that we have 3.2 the cifs code says ntlmv2 is now defaulted in 3.3 :) It used to say it was present in 3.2 Oh well NOT a real issue...
by ppuskari
Fri Aug 10, 2012 4:03 am
Forum: Troubleshooting
Topic: Hang on serial port open
Replies: 28
Views: 13117

Re: Hang on serial port open

After remembering the issues with the Raspi and low speed usb devices and combinations I was able to get my pl2303 device working direct on the usb port AND on the powered usb hub (CyberPower) In my case I am thinking it is back to the bug with the USB mixed speed setups... In my previous tests I ha...

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