[Dsg-hallc_gem] Hall c gem gas flow monitoring

[Ching Him Leung]

Hi Brian

Thank you. Yes, it is definitely HDMI port 0, that we are using.

Ching Him
________________________________
From: Brian Eng <beng at jlab.org>
Sent: Friday, May 9, 2025 4:04 PM
To: Ching Him Leung <cleung at jlab.org>; Marc Mcmullen <mcmullen at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Re: [Dsg-hallc_gem] Hall c gem gas flow monitoring

One other thing to make sure is that you’re plugged into HDMI port 0 rather than 1.

________________________________
From: Brian Eng <beng at jlab.org>
Sent: Friday, May 9, 2025 4:01:46 PM
To: Ching Him Leung <cleung at jlab.org>; Marc Mcmullen <mcmullen at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Re: [Dsg-hallc_gem] Hall c gem gas flow monitoring

Hi Ching,

That is the GPU test screen for a raspberry pi, usually if it gets stuck there it is because the SD has failed.

________________________________
From: Dsg-hallc_gem <dsg-hallc_gem-bounces at jlab.org> on behalf of Ching Him Leung <cleung at jlab.org>
Sent: Friday, May 9, 2025 3:53:29 PM
To: Marc Mcmullen <mcmullen at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Re: [Dsg-hallc_gem] Hall c gem gas flow monitoring

Hi Marc

So I powered it on without the network cable. And this is what being shown on the display.

I am not sure if this a good sign or not

Ching Him

[image/jpeg]
________________________________
From: Marc Mcmullen <mcmullen at jlab.org>
Sent: Friday, May 9, 2025 1:30 PM
To: Ching Him Leung <cleung at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Re: Hall c gem gas flow monitoring

I would unplug it for a minute or two, disconnect the network cable. Power it back on with the display connected and see if it powers up and displays a normal Rpi screen (all without the network plugged in).

If that works, then plug in the network cable.
________________________________
From: Ching Him Leung <cleung at jlab.org>
Sent: Friday, May 9, 2025 12:49 PM
To: Marc Mcmullen <mcmullen at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Hall c gem gas flow monitoring

Hi Marc

We think there might be some issue with the rpi for GEM gas flow monitoring in hall c. We tried power cycling it, but it did not respond.  We hook up a display to the rpi, but nothing shows up on the screen.

Do you have some suggestions?

Thank you
Ching Him
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallc_gem/attachments/20250509/c5535f66/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20250509_142047.jpg
Type: image/jpeg
Size: 2089173 bytes
Desc: 20250509_142047.jpg
URL: <https://mailman.jlab.org/pipermail/dsg-hallc_gem/attachments/20250509/c5535f66/attachment-0001.jpg>