Re: Radeon 6800 XT: 100% GPU core usage & 74 Watts when idle
The Wanderer wrote:
> On 2021-07-23 at 16:44, piorunz wrote:
>
> > Hello,
> >
> > I am using Bullseye 11 with Radeon 6800 XT and noticed higher
> > temperature and noise comparing to Windows, so I investigated this and
> > found the fault. GPU core works at 100% usage at all times, even at idle.
> >
> > $ cat /sys/class/drm/card0/device/gpu_busy_percent
> > 99
>
> That's interesting. I get the same output from that command (with a 5600
> XT), but I'm not noticing any meaningful noise that seems to be coming
> from the card.
RX560: 0
> > $ sensors
> > amdgpu-pci-0900
> > Adapter: PCI adapter
> > vddgfx: 1.14 V
> > fan1: 1098 RPM (min = 0 RPM, max = 3000 RPM)
> > edge: +51.0°C (crit = +100.0°C, hyst = -273.1°C)
> > (emerg = +105.0°C)
> > junction: +55.0°C (crit = +110.0°C, hyst = -273.1°C)
> > (emerg = +115.0°C)
> > mem: +56.0°C (crit = +100.0°C, hyst = -273.1°C)
> > (emerg = +105.0°C)
> > power1: 74.00 W (cap = 272.00 W)
>
> I get 1478 RPM, and temperature readings of 66, 72, 78, plus a power
> reading of 94 W. Those do sound higher than reasonable, but I'm
> disinclined to trust the RPM value at least, since that'd be nearly 25
> revolutions per second and I'm nearly positive that'd be a lot more
> audible than what I'm hearing. And of course if that reading isn't
> accurate, there's less reason to trust the others.
Still an RX560:
amdgpu-pci-2b00
Adapter: PCI adapter
vddgfx: 887.00 mV
fan1: 1610 RPM (min = 0 RPM, max = 3600 RPM)
edge: +42.0°C (crit = +94.0°C, hyst = -273.1°C)
power1: 22.09 W (cap = 48.00 W)
> My initial guess is that this is either A: bad data / false positive
> (i.e., it's not really that bad under the hood), or B: a limitation of
> the Linux-side drivers.
It's plausible that there's something in power management that
can and should be turned on, and isn't.
-dsr-
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