Comment 91 for bug 1810183

Ok, I think this issue will be solved in a few days !

Thanks to you, I finally found the magic lines.

My laptop is : Asus-VivoBook-ASUSLaptop-X421IA-M433IA

The command "sudo i2cdetect -l" return theses lines :

i2c-3 smbus SMBus PIIX4 adapter port 1 at 0b20 SMBus adapter
i2c-1 smbus SMBus PIIX4 adapter port 0 at 0b00 SMBus adapter
i2c-6 i2c AMDGPU DM aux hw bus 0 I2C adapter
i2c-4 i2c AMDGPU DM i2c hw bus 0 I2C adapter
i2c-2 smbus SMBus PIIX4 adapter port 2 at 0b00 SMBus adapter
i2c-0 i2c Synopsys DesignWare I2C adapter I2C adapter
i2c-5 i2c AMDGPU DM i2c hw bus 1 I2C adapter

And now, to turn on the numpad I use this command :

sudo i2ctransfer -f -y 0 w13@0x15 0x05 0x00 0x3d 0x03 0x06 0x00 0x07 0x00 0x0d 0x14 0x03 0x01 0xad

And to turn the numpad off this one :

sudo i2ctransfer -f -y 0 w13@0x15 0x05 0x00 0x3d 0x03 0x06 0x00 0x07 0x00 0x0d 0x14 0x03 0x00 0xad

As I told before, I succeed to turn it on with the "all ports test" command but wanted to know the good one and I started to test 1 to 6 but could not guess it was 0 !

I really think that there is no hardware to handle the numpad since without the correct driver installed, there is no way use the lightpad. So, i'm sure there is a little program running in background to detect the zone pressed in the numpad and display the corresponding number.

Someone already wrote such a program and if I could get it work, I would have printed numbers on a transparent sticky paper and place it on the numpad. But people who succeed in turning on the numpad will probably make us a kind of .deb to install and get this thing work ! I trust you !

Whatever, many thanks for this hack ! Even if I can't use it for now, I can give the illusion that Linux do the job too ! :-)