benzhaomin / corsairpsu Goto Github PK

I have a hx750i PSU and am using your driver to monitor the power usage. When I wake my computer from suspend I get all 0 readings until I reload the driver.

corsairpsu-hid-3-3
Adapter: HID adapter
voltage supply:   0.00 V  
voltage 12v:      0.00 V  
voltage 5v:       0.00 V  
voltage 3.3v:     0.00 V  
fan rpm:           0 RPM
temp1:            +0.0°C  
temp2:            +0.0°C  
power total:      0.00 W  
power 12v:        0.00 W  
power 5v:         0.00 W  
power 3.3v:       0.00 W  
current 12v:      0.00 A  
current 5v:       0.00 A  
current 3.3v:     0.00 A 

Then after reloading the driver I get normal readings again

corsairpsu-hid-3-3
Adapter: HID adapter
voltage supply: 115.00 V  
voltage 12v:     12.06 V  
voltage 5v:       5.06 V  
voltage 3.3v:     3.34 V  
fan rpm:           0 RPM
temp1:           +31.2°C  
temp2:           +25.0°C  
power total:     36.00 W  
power 12v:       20.00 W  
power 5v:        10.50 W  
power 3.3v:       7.00 W  
current 12v:      1.75 A  
current 5v:       2.19 A  
current 3.3v:     2.19 A 

I am running on Manjaro with the AUR package: https://duckduckgo.com/?t=ffab&q=corsairpsu+0+readings+after+wake+from+suspend&ia=web

I am not able to get any output from this PSU, and the HX1000i is on the supported list. Maybe there's a rev 3 that's not supported?

lsusb output:

First, thank you for this driver! There's nothing more satisfying than buying a piece of known Windows-only hardware and discovering that somebody has already REd and wrote a driver for that :)

The problem I've discovered is that when you try to read the hwmon sysfs files concurrently from more than one place, they will return completely bogus readings:

# sensors
corsairpsu-hid-3-1
Adapter: HID adapter
voltage supply:   3.33 V
voltage 12v:     48.50 V
voltage 5v:     134.00 V
voltage 3.3v:   106.00 V
fan rpm:           0 RPM
temp1:           +27.0°C
temp2:            +2.0°C
power total:      2.50 W
power 12v:        8.75 W
power 5v:         5.44 W
power 3.3v:     875.00 mW
current 12v:      0.00 A
current 5v:     1000.00 mA
current 3.3v:     2.00 A
<...>

Reproducer is trivial: run watch -n1 sensors and watch -n0.1 sensors in two terminals and look at the first one.

Just in case this is somehow hardware dependent:

• PSU: Corsair HX1000i
• Kernel: 5.4.10-arch1

I'll be happy to provide any other information you need.

I was wondering if it would be possible to expose maximum statistics for relevant metrics, for example power consumption? This can of course be monitored via the hwmon files, but I assume that given the high frequency needed for this monitoring, it can be done better in the driver. Such a feature would be helpful in order to see the maximum power consumption observed in relation to the PSUs rated specification.