Check_pid Error In Packet
Contents |
• All times are UTC - 6 hours [ DST ] Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
USB Issues The widespread integration of USB into embedded applications presents many developers with the challenge of working with this protocol for the first time. The complexity of USB can mask problems, leaving issues that
Nagios Check_snmp
are difficult to detect and isolate when a USB device misbehaves. USB protocol analyzers allow engineers to gain greater visibility into the bus to help them quickly pinpoint the exact nature of a bug, whether it is in the physical, electrical, or protocol layer. In this article, we will explore how a USB protocol analyzer can be used to debug potential problems encountered in USB development. The Case for USB Protocol Analyzers https://support.nagios.com/forum/viewtopic.php?f=7&t=30761 Faced with a wide selection of debugging tools such as logic analyzers, oscilloscopes, and protocol analyzers, finding the ideal debugging tool can be a daunting task. Fortunately, the complexity of USB guides the choice of an ideal debugging solution. As a result of the USB protocol's complexity, tools like logic analyzers or oscilloscopes may be limited by their low-level view, making it difficult to sort through large amounts of serial data. In http://www.totalphase.com/solutions/wp/debugging-usb/ contrast, protocol analyzers are able to non-intrusively monitor the bus, view data as packets, and capture higher-level protocol-specific data in large volumes. Figure 1. Typical device configuration for capturing USB data. The setup for capturing USB data is a straightforward process. In Figure 1, the USB Analyzer is connected in-line between the Target Host and the Target Device to non-intrusively capture data. As communication between the host and device begins, the data is sent immediately to the analysis computer which runs the capture software for real-time display and filtering. In contrast to scopes and logic analyzers, the USB capture software can display detailed information such as timestamp, device and endpoint address, packet identifiers (PIDs), and data in a human-readable format. The software also includes search and/or filter features to help developers quickly locate data of interest within a large amount of data. We will now look at some examples of how a USB protocol analyzer such as the Beagle USB 480 Protocol Analyzer (Figure 1) can be used to help identify common problems in USB development. USB Data Validity USB employs two error checking methods to ensure that data is sent correctly. A cyclic redundancy check (CRC) is sent with all data transmissions to validate data integrity within a packet. In addition, a toggl
joenyland at me Mar15,2012,3:53AM Post #1 of 7 (887 views) Permalink MythFrontend Segfaults on Mac OS X when http://marc.info/?l=mythtv-users&m=133180903227704 attempting to view live TV Hello, This is a follow on from another thread, where Jean-Yves Avenard and others error in were helping me to work through some performance issue with MythFrontend on Mac OS X. I've decided to create a new thread for this, as the original subject doesn't really apply to this issue. My backend: MythTV Version : error in packet v0.25-beta-107-gc09b076 MythTV Branch : master Network Protocol : 72 Library API : 0.25.20120307-2 QT Version : 4.6.2 Options compiled in: linux profile use_hidesyms using_alsa using_oss using_pulse using_pulseoutput using_backend using_bindings_perl using_bindings_python using_bindings_php using_crystalhd using_dvb using_firewire using_frontend using_hdhomerun using_ceton using_hdpvr using_iptv using_ivtv using_joystick_menu using_libcrypto using_libdns_sd using_libxml2 using_lirc using_mheg using_opengl_video using_qtwebkit using_qtscript using_qtdbus using_v4l2 using_v4l1 using_x11 using_xrandr using_xv using_bindings_perl using_bindings_python using_bindings_php using_mythtranscode using_opengl using_vdpau using_ffmpeg_threads using_live using_mheg using_libxml2 Frontend: MythTV Version : v0.25-beta-105-gf261f8e MythTV Branch : master Network Protocol : 72 Library API : 0.25.20120307-2 QT Version : 4.6.4 Options compiled in: debug use_hidesyms darwin_da using_corevideo using_backend using_bindings_php using_darwin using_firewire using_frontend using_hdhomerun using_ceton using_iptv using_libcrypto using_libdns_sd using_libxml2 using_libudf using_mheg using_opengl_video using_qtwebkit using_qtscript using_qtdbus using_appleremote using_bindings_php using_darwin_da using_mythtranscode using_opengl using_ffmpeg_threads using_live using_mhe
Message-ID: 1bddd411-61b1-6208-ad0c-ce9fdb52bd33 () me ! com [Download message RAW] [Attachment #2 (multipart/alternative)] Hello, This is a follow on from another thread, where Jean-Yves Avenard and others were \ helping me to work through some performance issue with MythFrontend on Mac OS X. I've decided to create a new thread for this, as the original subject doesn't really \ apply to this issue. My backend: MythTV Version : v0.25-beta-107-gc09b076 MythTV Branch : master Network Protocol : 72 Library API : 0.25.20120307-2 QT Version : 4.6.2 Options compiled in: linux profile use_hidesyms using_alsa using_oss using_pulse using_pulseoutput \ using_backend using_bindings_perl using_bindings_python using_bindings_php \ using_crystalhd using_dvb using_firewire using_frontend using_hdhomerun using_ceton \ using_hdpvr using_iptv using_ivtv using_joystick_menu using_libcrypto using_libdns_sd \ using_libxml2 using_lirc using_mheg using_opengl_video using_qtwebkit using_qtscript \ using_qtdbus using_v4l2 using_v4l1 using_x11 using_xrandr using_xv \ using_bindings_perl using_bindings_python using_bindings_php using_mythtranscode \ using_opengl using_vdpau using_ffmpeg_threads using_live using_mheg using_libxml2 Frontend: MythTV Version : v0.25-beta-105-gf261f8e MythTV Branch : master Network Protocol : 72 Library API : 0.25.20120307-2 QT Version : 4.6.4 Options compiled in: debug use_hidesyms darwin_da using_corevideo using_backend using_bindings_php \ using_darwin using_firewire using_frontend using_hdhomerun using_ceton using_iptv \ using_libcrypto using_libdns_sd using_libxml2 using_libudf using_mheg \ using_opengl_video using_qtwebkit using_qtscript using_qtdbus using_appleremote \ using_bindings_php using_darwin_da using_mythtranscode using_opengl \ using_ffmpeg_threads using_live using_mheg using_libxml2 using_libudf When I try to watch live TV from the frontend, I get a message displayed "Error \ Opening jump program file buffer in Live TV" or sometimes a message like "Failed to \ read buffer too many times", then moments later MythFrontend crashes with a segfault. \ Here's log with audio,file debugging on: http://pastebin.com/GtnmnVY8 . I doubt it's \ of any use, but here's the Mac OS X crash report too: http://pastebin.com/vjGirB16á Here's my log from the backend server with all debug info on at the same time: \ http://pastebin.com/KHpHXFjJ I'm also getting thousands of messages in my backend logs like this: 2012-03-15 07:16:23.585144 E P