[Question] RX 7800 XT cannot control fans?

[Sentenza-Git]

Hello,

I'm trying to manually control the card's fans but my settings have no effect, hence my question:
Is this card already supported in the latest version of TuxClocker?

PS. I have the same problem if I use CoreCtrl.

**TuxClocker version:1.4.0-1
**Distribution: Arch Linux - Cinnamon - X11
**Kernel version:6.6.3-arch1-1
**GPU model:RX 7800 XT Sapphire Pulse
**GPU driver:Mesa 23.2.1-2

[Lurkki14]

Support for that should come in Linux 6.7 but I'm not sure the interface is stable yet.

[Sentenza-Git]

Ok thanks for your reply, I'll be patient then.

[Lurkki14]

New fan control interface has been released, I'm just not sure if the old interface works with 6.7 with 7000-series cards.

If not, I'll just make the fan speed control set all the curve points to the same value on 7000-series cards, since we can already set fan curves with custom granularity and more conveniently.

[Lurkki14]

Attempted to add support with 4f96ee1

[Nama]

Doesn't seem to work.

I have libdrm installed. Tried on 6.7.2-AMD-znver3 and linux-zen 6.7 on arch.

I have XFX SPEEDSTER MERC 310 AMD Radeon RX 7900 XT

[Lurkki14]

@Nama does doing cat /sys/class/drm/card*/device/gpu_od/fan_ctrl/fan_curve look similar to this? #88 (reply in thread)

[Nama]

yes

OD_FAN_CURVE:
0: 0C 0%
1: 0C 0%
2: 0C 0%
3: 0C 0%
4: 0C 0%
OD_RANGE:
FAN_CURVE(hotspot temp): 25C 100C
FAN_CURVE(fan speed): 15% 100%

echoing works for me, too. But not with the values you provided. These worked, but took like 10-20 seconds oO (maybe it was the low temp of the core at 42°C)

echo "0 36 20" | sudo tee /sys/class/drm/card0/device/gpu_od/fan_ctrl/fan_curve
echo "1 40 30" | sudo tee /sys/class/drm/card0/device/gpu_od/fan_ctrl/fan_curve
echo "2 45 35" | sudo tee /sys/class/drm/card0/device/gpu_od/fan_ctrl/fan_curve
echo "3 50 40" | sudo tee /sys/class/drm/card0/device/gpu_od/fan_ctrl/fan_curve
echo "4 55 45" | sudo tee /sys/class/drm/card0/device/gpu_od/fan_ctrl/fan_curve
echo "c" | sudo tee /sys/class/drm/card*/device/gpu_od/fan_ctrl/fan_curve

echo "r" resets the fan speed/curve.

[Nama]

Like @lafluer56 said, the default values can't be read:

getFanSpeedWrite() looks more correct than getFanSpeedWriteRX7000() to me (at least for static speed, I guess)?

$ ls -l /sys/class/drm/card0/device/hwmon/hwmon2/pwm1*
.rw-r--r-- 4.1k root 29 Jan 11:30 /sys/class/drm/card0/device/hwmon/hwmon2/pwm1
.rw-r--r-- 4.1k root 29 Jan 20:10 /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_enable
.r--r--r-- 4.1k root 29 Jan 20:40 /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_max
.r--r--r-- 4.1k root 29 Jan 20:40 /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_min

$ cat /sys/class/drm/card0/device/hwmon/hwmon2/pwm1*
0
2
255
0

$ ls -l /sys/class/drm/card0/device/hwmon/hwmon2/fan1_*
.rw-r--r-- 4.1k root 29 Jan 20:40 /sys/class/drm/card0/device/hwmon/hwmon2/fan1_enable
.r--r--r-- 4.1k root 29 Jan 11:30 /sys/class/drm/card0/device/hwmon/hwmon2/fan1_input
.r--r--r-- 4.1k root 29 Jan 11:30 /sys/class/drm/card0/device/hwmon/hwmon2/fan1_max
.r--r--r-- 4.1k root 29 Jan 11:30 /sys/class/drm/card0/device/hwmon/hwmon2/fan1_min
.rw-r--r-- 4.1k root 29 Jan 20:40 /sys/class/drm/card0/device/hwmon/hwmon2/fan1_target

$ cat /sys/class/drm/card0/device/hwmon/hwmon2/fan1_*
0
0
3300
0
0

# echo 1 > /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_enable
# cat /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_enable
2
# echo 100 > /sys/class/drm/card0/device/hwmon/hwmon2/pwm1
# dmesg
amdgpu: manual fan speed control should be enabled first

It is not possible to change to manual mode oO

[Lurkki14]

Attempted fix for fan speed setting 258ad2f

Also looks like we need a separate node for RX 7000 to reset the fan speed, I'll add that in a bit

[Lurkki14]

Added the reset edb7a8d

Also uploaded a tarball with this to https://github.com/Lurkki14/tuxclocker/releases/tag/1.5.0 as tuxclocker-master.tar.xz