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s800_daq_tools [2016/02/29 13:27] pereira [Troubleshooting] |
s800_daq_tools [2016/02/29 14:56] pereira [Old processes still running] |
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There are several common reasons why the S800 DAQ may fails to start. The list below describes what to do to fix these problems. | There are several common reasons why the S800 DAQ may fails to start. The list below describes what to do to fix these problems. | ||
* [[#No data sources defined]] | * [[#No data sources defined]] | ||
+ | * [[#CCUSB and/or VMUSB claimed by existing programs]] | ||
+ | * [[#Manual rebooting]] | ||
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+ | ==== Old processes still running ==== | ||
+ | Sometimes, particularly if the previous S800 DAQ session ended in an uncontrolled way, there may be old processes running (CCUSB and/or VMUSB and/or S800 event builder) that will prevent Readout GUI to begin a run. Whenever this happens (typically after clicking '' | ||
+ | - Make sure that you exit your Readout GUI properly | ||
+ | - Type '' | ||
+ | - Type ''/ | ||
+ | - You will see a list of ringbuffers with information about their status (see figure below). Check that the producer value of each ringbuffer (see column '' | ||
+ | - If the producer value of a ringbuffer is not -1, take note of the PID, and kill the process by typing '' | ||
+ | - You should now be able to run Readout GUI and begin a run without problem. | ||
==== No data sources defined ==== | ==== No data sources defined ==== | ||
When clicking '' | When clicking '' |