RPi Bugs - Revision history

Lod: /* Hardware */ Clarified audio click event

2013-04-25T03:40:15Z

‎Hardware: Clarified audio click event

AndrewS: /* Hardware */ changed link formatting

2013-03-12T00:40:42Z

‎Hardware: changed link formatting

Lod: Undo revision 224390 to reinstate sound hardware problem. Problem is real and no reason was given for the deletion.

2013-03-01T23:52:00Z

Undo revision 224390 to reinstate sound hardware problem. Problem is real and no reason was given for the deletion.

Mahjongg: /* Hardware */

2013-02-27T00:06:05Z

‎Hardware

AlonzoTG at 02:33, 20 November 2012

2012-11-20T02:33:09Z

Jbeale: /* Hardware */ spelling

2012-08-23T17:28:08Z

‎Hardware: spelling

Elatllat: /* Hardware */

2012-08-13T04:03:47Z

‎Hardware

Elatllat: /* Firmware */

2012-08-12T22:33:18Z

‎Firmware

Elatllat: /* Firmware */

2012-08-12T21:03:58Z

‎Firmware

Elatllat: /* Firmware */

2012-08-12T20:22:34Z

‎Firmware

@@ Line 11: / Line 11: @@
 * The current R-Pi firmware limits users to 2 hubs and 14 ports.
 * Some Hardware is unsupported [[RPi_VerifiedPeripherals|link]]
-* The sound output port on boards version 1.0 and 2.0 are miss-wired causing distortion and a DC offset which could damage certain types of DC-coupled amplifiers and even loudspeakers. It is recommended that you use the HDMI or I2S functionality. If you need to use this port, make sure that the equipment you use has a DC blocking capacitor. The specific problem is that the surge suppression network, which should come between the SoC and the DC blocking capacitor comes AFTER the capacitor, creating a rectification effect of the signal, causing a DC offset and distortion. The design fix is simple, move the DC blocking capacitor after the surge suppressing diodes and then add a 100k resistor (470k, or even up to 1M is fine too) to ground. A series 100 ohm resistor just before the jack might also help suppress unwanted RF interference. If high quality output is required from existing boards, it is necessary to remove parts D12 and D13 from the back of the board. The three pads should be VCC, signal and GND respectively, identify each pad and carefully install some resistor between 10k and 100k between the signal and GND, making sure not to short out VCC. This is fairly high-end SMD re-work, I would suggest you get some training, tools and practice before attempting. (ed note: the writer of this comment does not have said skills, only knows what would have to be done).
+* The analog sound output chip suffers from a clicking problem when it awakes from sleep.
 = Software =

@@ Line 10: / Line 10: @@
 = Hardware =
 * The current R-Pi firmware limits users to 2 hubs and 14 ports.
-* Some Hardware is unsupported [http://elinux.org/RPi_VerifiedPeripherals link]
+* Some Hardware is unsupported [[RPi_VerifiedPeripherals|link]]
 * The sound output port on boards version 1.0 and 2.0 are miss-wired causing distortion and a DC offset which could damage certain types of DC-coupled amplifiers and even loudspeakers. It is recommended that you use the HDMI or I2S functionality. If you need to use this port, make sure that the equipment you use has a DC blocking capacitor. The specific problem is that the surge suppression network, which should come between the SoC and the DC blocking capacitor comes AFTER the capacitor, creating a rectification effect of the signal, causing a DC offset and distortion. The design fix is simple, move the DC blocking capacitor after the surge suppressing diodes and then add a 100k resistor (470k, or even up to 1M is fine too) to ground. A series 100 ohm resistor just before the jack might also help suppress unwanted RF interference. If high quality output is required from existing boards, it is necessary to remove parts D12 and D13 from the back of the board. The three pads should be VCC, signal and GND respectively, identify each pad and carefully install some resistor between 10k and 100k between the signal and GND, making sure not to short out VCC. This is fairly high-end SMD re-work, I would suggest you get some training, tools and practice before attempting. (ed note: the writer of this comment does not have said skills, only knows what would have to be done).
 = Software =

@@ Line 11: / Line 11: @@
 * The current R-Pi firmware limits users to 2 hubs and 14 ports.
 * Some Hardware is unsupported [http://elinux.org/RPi_VerifiedPeripherals link]
 = Software =

@@ Line 11: / Line 11: @@
 * The current R-Pi firmware limits users to 2 hubs and 14 ports.
 * Some Hardware is unsupported [http://elinux.org/RPi_VerifiedPeripherals link]
 = Software =

@@ Line 11: / Line 11: @@
 * The current R-Pi firmware limits users to 2 hubs and 14 ports.
 * Some Hardware is unsupported [http://elinux.org/RPi_VerifiedPeripherals link]
 = Software =

@@ Line 24: / Line 24: @@
 == Firmware ==
 * tracked on [https://github.com/raspberrypi/firmware/issues github]
-* 73 threads on [https://www.google.ca/#hl=en&q=site%3Ahttp%3A%2F%2Fwww.raspberrypi.org%2FphpBB3+%22kevent+2+may+have+been+dropped%22 kevent 2 may have been dropped] (possible [http://www.raspberrypi.org/phpBB3//viewtopic.php?p=141642#p141642 solution])
+* 73 threads on [https://www.google.ca/#hl=en&q=site%3Ahttp%3A%2F%2Fwww.raspberrypi.org%2FphpBB3+%22kevent+2+may+have+been+dropped%22 kevent 2 may have been dropped] (possible [http://www.raspberrypi.org/phpBB3/viewtopic.php?p=99463#p99463 solution])
 * 55 threads on [https://www.google.ca/#hl=en&q=site%3Ahttp%3A%2F%2Fwww.raspberrypi.org%2FphpBB3+%22error+-71%22 error -71] (see the [[Rpi_USB_check-list]])
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