Turning off environment checking on a fuel

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dhjj
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Turning off environment checking on a fuel

Unread postby dhjj » Sun Apr 30, 2017 6:48 pm

I have a fuel with a problem on the motherboard, it always thinks one of the fans is not working even though they all are.
It always wants to shut down.
Is there a env var that I can set in nvram settings or from the L1 that will disable env checking?

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Raion-Fox
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Re: Turning off environment checking on a fuel

Unread postby Raion-Fox » Sun Apr 30, 2017 7:52 pm

env off from the L1 should do it.

If that fixes the problem then it seems this thread may hold the key to fixing it:

viewtopic.php?f=3&t=16206

That's SMD level stuff though, huge pita.
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Y888099
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Re: Turning off environment checking on a fuel

Unread postby Y888099 » Sun Apr 30, 2017 9:50 pm

I wonder why one of the three DS1780 (Peripheral Monitor chip) decides to fail at some point :roll:
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dhjj
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Re: Turning off environment checking on a fuel

Unread postby dhjj » Mon May 01, 2017 8:58 pm

thanks for the info, turning off the env let me keep the machine running, was able to flash the motherboard and seems to run fine with a 900mhz cpu, but the 2 small fans in front that cool the graphics card still won't run, tried other fans and same result, SO must have a board issue, and changing chips is way beyond my pay grade.

Need a new MB

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Trippynet
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Re: Turning off environment checking on a fuel

Unread postby Trippynet » Tue May 02, 2017 1:32 am

If it's just the fans not spinning and you don't mind running with no environmental monitoring, it might be easier to just use some molex adapters and power the fans that way.
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:Fuel: - Lithium: R14000 600MHz CPU, 4GB RAM, V10 Graphics, 72GB 15k HDD & 300GB 10k HDD, 1Gb/s NIC, New/quiet fans, IRIX 6.5.30
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Re: Turning off environment checking on a fuel

Unread postby kubatyszko » Thu May 04, 2017 7:23 am

Interesting situation, exactly opposite from what I designed into my Fuel ATX adapters - my adapters generate TWO fake fan signals to feed into ENV and make fuel think it's getting fan RPM without having to turn the monitoring off.
But well, you can simply get those molex-adapter based fan's and mount them I guess.

Interestingly, the DS1780 chips themselves do not control fan speeds, they only report RPM to the L1. I wonder what's actually broken on the MB (that's regarding the XIO fan's).
The one fan you mention that works but doesn't show up in L1 - definitely bad 1780.
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