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by pwinwood
Sat Jul 21, 2012 3:22 pm
Forum: Troubleshooting
Topic: usb keyboards bring down the usb bus
Replies: 6
Views: 1023

Re: usb keyboards bring down the usb bus

No, here are the connect/disconnect events from my /var/log/messages Jul 21 15:58:25 rasberrypi kernel: [ 39.594581] usb 1-1.3.3: USB disconnect, device number 6 Jul 21 15:58:28 rasberrypi kernel: [ 42.775216] usb 1-1.2: new low speed USB device number 9 using dwc_otg Jul 21 15:58:28 rasberrypi kern...
by pwinwood
Sat Jul 21, 2012 3:00 pm
Forum: Troubleshooting
Topic: usb keyboards bring down the usb bus
Replies: 6
Views: 1023

Re: usb keyboards bring down the usb bus

No problems with my Keysonic ACK-3700C when plugged into the powered HUB or the USB socket on the Pi just USB connect/disconnect messages for the keyboard.
by pwinwood
Thu Jul 19, 2012 8:48 pm
Forum: Raspberry Pi OS
Topic: Blog: Java performance on Raspbian vs Debian
Replies: 7
Views: 4549

Re: Blog: Java performance on Raspbian vs Debian

Once Java code has been compiled the only thing that can be changed to improve the performance of Java is the JIT compiler on the platform. If the JIT compiler for our ARM variant is inefficient then that is what needs to be changed. It seems to me that good platform-specific JIT compilers are rare....
by pwinwood
Sun Jul 08, 2012 10:09 am
Forum: Troubleshooting
Topic: Serious HDMI Problems. What's that smell? Burning Raspberry!
Replies: 72
Views: 68072

Re: Serious HDMI Problems. What's that smell? Burning Raspbe

Hello mad-hatter, You asked: How did you break out the 5V line, an adapter of some sort and strip the cable? I took the HDMI converter apart - this was quite easy, with gentle pressure on the HDMI lead and it's bush in the case the circuit board pops out the other side still attached to the VGA conn...
by pwinwood
Sat Jul 07, 2012 9:05 pm
Forum: Troubleshooting
Topic: Serious HDMI Problems. What's that smell? Burning Raspberry!
Replies: 72
Views: 68072

Re: Serious HDMI Problems. What's that smell? Burning Raspbe

For what it is worth I have measured the current consumption of the "Neewer Black HDMI Input To VGA Adapter Converter" to be 400mA. There are two 800mA switch mode power supply chips in the Converter. Therefore it is likely to damage the diode on the Raspberry Pi board. To fix this I have added a se...

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