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by obcd
Tue Apr 30, 2013 11:24 am
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 197284

Re: USB redux

Look up ARM FIQ's for how gsh latest code fixes the interrupt speed issue. Ok, so the FIQ is comparable to the NMI that was present on some early day microcontrollers. Using it should fix the split transaction issues, so no more missing keystrokes and strange mouse behavour. I am still confused abo...
by obcd
Tue Apr 30, 2013 9:15 am
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 197284

Re: USB redux

As it's known what causes the problems, it should be possible to give a clue of when problems can be expected. It's perfectly possible to figure out what type of endpoints an usb device is using. Even if a wiki list isn't complete, it should be possible to create a list of known "good" working devic...
by obcd
Tue Apr 30, 2013 8:28 am
Forum: Troubleshooting
Topic: Huawei E352 and Debian
Replies: 7
Views: 2857

Re: Huawei E352 and Debian

Isn't Sakis3g having options like --interactive --debug (maybe capital I can't remember). If you run it with this parameters from an ssh console, it will show a large amount of output which you can capture in a file. It's precisely the new line that uses AT commands to turn off the cdrom emulation. ...
by obcd
Tue Apr 30, 2013 8:01 am
Forum: Troubleshooting
Topic: Question about ppp connection
Replies: 5
Views: 2946

Re: Question about ppp connection

To my knowledge, it's the other way around The Compaq sees the linux as a modem and will send the AT commands to it. The linux should answer with OK which is the normal AT command set answer. The ATDT coming from the Compaq initiates a dial up. If such succeeds, the modem answers with CONNECT or CON...
by obcd
Tue Apr 30, 2013 7:52 am
Forum: Troubleshooting
Topic: GPSD Troubles
Replies: 7
Views: 3531

Re: GPSD Troubles

Have you tried to create a logfile of the gps nmea sentences with gpscat?
You can feed such a file to gpsd with gpsfake.
WHat indication do you have that gpsd is working properly?
by obcd
Mon Apr 29, 2013 3:25 pm
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 197284

Re: USB redux

Jamesh made a point. If the way usb works now doesn't work for you, don't complain but sell the board and move on to something else. After all, it's just 35 US$ This leads me to believe it won't get much better anymore than it is at the moment. I don't blame the people working on it about that. If t...
by obcd
Mon Apr 29, 2013 1:47 pm
Forum: Nederlands
Topic: 100% CPU in Raspbian
Replies: 13
Views: 2953

Re: 100% CPU in Raspbian

Bij de roku2 boot hij anders wel vanaf een nand flash chip op de pcb van de mediaspeler.
by obcd
Mon Apr 29, 2013 11:29 am
Forum: Nederlands
Topic: 100% CPU in Raspbian
Replies: 13
Views: 2953

Re: 100% CPU in Raspbian

Als je maar 1 usb poort hebt en je moet die gebruiken voor een usbstick, dan begrens je wel serieus de mogelijkheden van je Pi. Je kunt geen usb keyboard, mouse of netwerk module meer aansluiten. Verder moeten de meeste SOC's weten vanaf waar ze booten. Hiervoor gebruiken ze soms enkele io lijnen, o...
by obcd
Mon Apr 29, 2013 8:56 am
Forum: Troubleshooting
Topic: Slow sd card ??
Replies: 10
Views: 3121

Re: Slow sd card ??

It has a fast gpu that makes it possible to decode and show hd video content, but it has a rather slow cpu.
So, as soon as you need cpu power it's limits show up. A typical example of this is web browsing or other activity in the GUI, as that isn't hardware accelerated by the CPU like video playback.
by obcd
Mon Apr 29, 2013 8:36 am
Forum: Troubleshooting
Topic: Slow sd card ??
Replies: 10
Views: 3121

Re: Slow sd card ??

You are not the only one, but there isn't much you can do about it.
by obcd
Mon Apr 29, 2013 7:13 am
Forum: Nederlands
Topic: 100% CPU in Raspbian
Replies: 13
Views: 2953

Re: 100% CPU in Raspbian

precies, op de sd kaart staan er 2 partities. De eerste is een 70 Mb fat32 partitie die gemount wordt als /boot. De tweede is een ext4 partitie die gemount wordt als root. Nu kun je wel die root partitie op usb plaatsen, maar die boot partitie moet op de sd kaart blijven. Je zult in de /boot/cmdline...
by obcd
Sun Apr 28, 2013 7:37 pm
Forum: Troubleshooting
Topic: Huawei E352 and Debian
Replies: 7
Views: 2857

Re: Huawei E352 and Debian

Some of the more modern huawei 3g modems can be switched into modem mode with a couple of AT commands and even stay in that mode afterwards.
Another thing you can do is run sakis in debug mode and check in the output what commands are sent to the modem to get it running.
by obcd
Sat Apr 27, 2013 7:32 am
Forum: Troubleshooting
Topic: Uninstalling a WIFI adapter
Replies: 5
Views: 947

Re: Uninstalling a WIFI adapter

The /etc/network/interfaces is the place where network related information is stored. If you see some wlanx entrys, you might delete those to start over fresh. First thing to check for a wifi adapter is indeed lsusb. It shows all recognised connected usb devices. You could both setup an irc chat cli...
by obcd
Sat Apr 27, 2013 7:21 am
Forum: Troubleshooting
Topic: Strange behaviour DHCP
Replies: 2
Views: 572

Re: Strange behaviour DHCP

Back to computer, not working dhcp, but pi request ip from old router... DHCP doesn't work like that. If a network interface is set to dhcp, the device will broadcast a dhcp request. A dhcp server on the same subnet will provide a valid dhcp ip adress to the device. DHCP servers tend to hand out th...
by obcd
Thu Apr 25, 2013 10:17 pm
Forum: Troubleshooting
Topic: New Model B not starting
Replies: 10
Views: 1441

Re: New Model B not starting

Yes, a male usb to male usb should work. (Just don't connect something to the mini usb at the same time) Some usb to mini usb cables have very thin wires and have a 0.15 - 0.25V cable loss. As the Pi needs 5V +- 5%, the cable can make the difference. The TP1 and TP2 points are clearly marked on the ...
by obcd
Thu Apr 25, 2013 9:47 pm
Forum: Troubleshooting
Topic: New Model B not starting
Replies: 10
Views: 1441

Re: New Model B not starting

You may not like the standard answers, but it's necessairy to rule out those issues before we can start examining other possible causes. Your Pi could for instance have a bad polyfuse, but you need to measure the TP1 - TP2 voltage to see if that's the case. Another thing you can try is powering it t...
by obcd
Thu Apr 25, 2013 8:49 pm
Forum: Troubleshooting
Topic: Trouble with multiple Raspberry Pi's
Replies: 10
Views: 1310

Re: Trouble with multiple Raspberry Pi's

So what kernel version are you on? uname - a should give you that information.
There should be OpenElec versions that are up to date and should work as well.
Maybe it's the overclocking of the xbmc distro's that is giving problems.
You could try disabling that in the /boot/config.txt file.
by obcd
Thu Apr 25, 2013 8:43 pm
Forum: Troubleshooting
Topic: Shutdown after about 5 min
Replies: 8
Views: 992

Re: Shutdown after about 5 min

I don't see how cooling it down would make a difference for the sd card firmware. If your TP1 - TP2 voltage is measuring fine, it's likely a bad soldering somewhere on the board. If it's still under warranty, you could request an RMA to exchange it. Are you overclocking your Pi or just running it at...
by obcd
Thu Apr 25, 2013 8:37 pm
Forum: Troubleshooting
Topic: problems with setting up AP
Replies: 6
Views: 788

Re: problems with setting up AP

When I tried a setup like that, I had problems that the Pi often failed to deliver a dhcp adress to the clients. At that moment, there was a description in the news section of someone that made an AP and had an image available for download preconfigured. He also has a topic in the Forum, probably in...
by obcd
Thu Apr 25, 2013 8:23 pm
Forum: Troubleshooting
Topic: New Model B not starting
Replies: 10
Views: 1441

Re: New Model B not starting

The first thing to check in such case is the TP1 - TP2 voltage. What power adapter are you using? Is it known as a good working adapter for the Pi? The next thing you can suspect is the sd card or the sd card socket. When the os is being loaded, you should see the green act led flashing for 10 - 20 ...
by obcd
Thu Apr 25, 2013 7:39 pm
Forum: Troubleshooting
Topic: SD Card is working fine in Pi but in nothing else!
Replies: 37
Views: 20074

Re: SD Card is working fine in Pi but in nothing else!

my apologies. I often have to defend my findings up to an absurd level so I guess it becomes a habbit. I am also always the one being confronted with Murphys law, so I know in my case the broken part is usually the most expensive or the one that can't be replaced. And after several years of fault fi...
by obcd
Thu Apr 25, 2013 3:50 pm
Forum: Nederlands
Topic: Win32DiskImager alternatief
Replies: 8
Views: 2230

Re: Win32DiskImager

Goed om weten. Jammer genoeg ook closed source. Bedankt om die info te delen.
Blijkbaar zijn er mensen die problemen hebben dat Win32Diskimager hun interne kaartlezer niet herkent. Misschien zijn de alternatieven een oplossing in zo'n geval. (Of misschien zijn die problemen ondertussen opgelost)
by obcd
Thu Apr 25, 2013 3:02 pm
Forum: Nederlands
Topic: Win32DiskImager alternatief
Replies: 8
Views: 2230

Re: Win32DiskImager

Zo op het eerste zicht kun je een compressed backup en restore doen van een sd kaart.
Dit lijkt mij toch wel handig.
Als je sd kaart niet vol stond, dan neemt je image file minder plaats in op je computer.
by obcd
Thu Apr 25, 2013 11:52 am
Forum: Troubleshooting
Topic: SD Card is working fine in Pi but in nothing else!
Replies: 37
Views: 20074

Re: SD Card is working fine in Pi but in nothing else!

He says it's a DSLR camera. Those are high end with a high resolution and only recently started to use sd card technology. Before they used compact flash cards as those were faster. We will need to wait for the original poster to get the answers. I am not saying sdhc compatibility of his devices can...
by obcd
Thu Apr 25, 2013 11:12 am
Forum: Troubleshooting
Topic: SD Card is working fine in Pi but in nothing else!
Replies: 37
Views: 20074

Re: SD Card is working fine in Pi but in nothing else!

He even tried his camera.
I guess that's not with the sd card reader(s) he was using with the pc's.

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