RAM stick not found on SMBus

[dietriro]

Hi there,

first thanks a lot for your work! I appreciate it that someone takes the time to implement such a script and shares it.

I have little to no knowledge about SMBus communication. I am just trying to turn off the LEDs on my Kingston Fury Beast DDR5 RAM.
The stick that I installed cannot be found, however. Here is the output from i2cdetect and from your script:

$ sudo ./kfrgb.sh --ramslots 1

• Kingston Fury DDR5 RAM in slot 1 not found on SMBus i2c-2.

• Please select an SMBus (or type 'quit' or 'q' to exit from /home/robind/downloads/kfrgb.sh):

2. i2c-2 smbus SMBus I801 adapter at 3000 SMBus adapter
   choose>

$ sudo i2cdetect -l
i2c-0 i2c Synopsys DesignWare I2C adapter I2C adapter
i2c-1 i2c Synopsys DesignWare I2C adapter I2C adapter
i2c-2 smbus SMBus I801 adapter at 3000 SMBus adapter

$ sudo i2cdetect -y 2
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 08 -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- 44 -- -- -- -- -- 4a -- -- -- -- --
50: -- -- 52 -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- 62 -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

I use the RAM for a linux server, so I don't have Windows running or even a visual desktop environment. That's why your tool would come in really handy.

Thanks in advance for your help!

[dietriro]

I might have found a reason for this. In the startup log I was able to find the following:

[ 2.540388] i2c i2c-2: 1/2 memory slots populated (from DMI)
[ 2.540390] i2c i2c-2: Memory type 0x22 not supported yet, not instantiating SPD

But I don't really know what it means or how it could help to solve the problem.

[KeyofBlueS]

Hi Dietriro, I really appreciate your kind words!

Would you mind sharing the output of the following command?

sudo ./kfrgb.sh --debug

[Sduck865]

Hi there!
I have the same problem, as for the truth im pretty new to linux.
nobara 41, kingston fury beast 2x32g on slot 2-4, gigabyte aorus elite ax v2, ryzen 7 9700x (i disabled Igpu on the BIOS), gigabyte master rtx4070ti
Here is my output:

sudo ./kfrgb.sh --debug

---

ABOUT DETECTION

Setting register &0x0b to 0x04 on addresses 0x5[0-7] allows to read the DIMM model name, but
very often address 0x5 is write protected (as in my system), which makes this method useless.

/opt/kfrgb/kfrgb.sh will:

• lshw: check for 'vendor: Kingston' and 'product: KF5*'.
• i2cdetect: check if addresses 0x6[0-7], 0x5[0-7] and 0x4[8-f] exist on an smbus that support Quick Command.
• i2cdump (mode i): on address 0x6[0-7] check if blocks 0x02=0x46, 0x03=0x55, 0x04=0x52, 0x05=0x59,
  0x07=0x10/0x12 (for BEAST) OR =0x11 (for RENEGADE).

The detection passes if all checks are true.
The detection fails at the first error in the chain.

---

---

• i2cdetect -l (check i2c-buses):
  i2c-0 i2c Synopsys DesignWare I2C adapter I2C adapter
  i2c-1 i2c Synopsys DesignWare I2C adapter I2C adapter
  i2c-2 i2c NVIDIA i2c adapter 1 at 1:00.0 I2C adapter
  i2c-3 i2c NVIDIA i2c adapter 2 at 1:00.0 I2C adapter
  i2c-4 i2c NVIDIA i2c adapter 3 at 1:00.0 I2C adapter
  i2c-5 i2c NVIDIA i2c adapter 4 at 1:00.0 I2C adapter
  i2c-6 i2c NVIDIA i2c adapter 5 at 1:00.0 I2C adapter
  i2c-7 i2c NVIDIA i2c adapter 6 at 1:00.0 I2C adapter
  No SMBus found!

ERROR: exit

I tried to fix based on this link, unfortunatelly without any success:
#29
I loaded the i2c-piix4 module, and there is no spd5118 module loaded, but still no SMBus.

Any kind of help will be very appreciated, and also sorry for my bad english :)

[Sduck865]

The correct way to add "acpi_enforce_resources=lax" parameter is solved my problem!
(Nobara: grubby --update-kernel=ALL --args="acpi_enforce_resources=lax")

Also, i have to "rmmod spd5118" driver after each restart, maybe later i will figure it out how to solve this part.