Re: Progess with GeoPad Tablet

Re: Progess with GeoPad Tablet

[Hans de Goede]

Hi Henry,

On 5-Apr-25 6:12 PM, Henry Isaac wrote:
> Hello Hans
> 
> Very sorry to email you directly again, I somehow lost the the emails with the community cc in, feel free to add them back or point me in that direction. No idea how I lost the emails. 
> 
> I think I may have made some progress. Before when running 
> 
> sudo i2cdetect -y -r 9 
> 
> We would get no output, just the lines all across. However withing the BIOS I found that settings for the touch panel could be changed. When switching from Goodix GT7385 device (which works in windows) to Goodix touch device when running the command again I get a new output 
> 
> Line 50 d 
> 
> Unsure if this is progress? 

Yes this is definitely progress for some reason changing
the BIOS option seems to have turned on the touchscreen.

The output now looking like this:

[henry@archlinux ~]$ sudo i2cdetect -y -r 9
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- 5d -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --                         

Indicates that the touchscreen is at the expected 0x5d
address, which matches with the "Goodix GT7385 Device"
option in the BIOS.

I wonder what happens if you change the BIOS option back
to "Goodix GT7385 Device" ?

Does "sudo i2cdetect -y -r 9" still show the 5d entry
then and/or does the touchscreen maybe start to work.

> I'm wondering if the bios has 2 different options. One for windows driver and one for generic Linux? (If that's a thing) 

No that is not it the "Goodix Touch Device" option
you chose is for a different Goodix touchscreen
at address 0x14. The touchscreen now showing up
at address 0x5d matches with the original
"Goodix GT7385 Device" selection.

Regards,

Hans

Re: Progess with GeoPad Tablet

[Hans de Goede]

Hi,

On 6-Apr-25 20:43, Henry Isaac wrote:
> Hello, 
> 
> I did try this actually, switching back to the correct option in bios and running the command again resulted in a blank one again but I'll double check. 

Ok, that is unfortunate.

So it looks like the kernel may need to manually instantiate
an i2c-client at address 0x5d, while you are leaving the BIOS
option set to "Goodix Touch Device".

Can you switch the BIOS option back to "Goodix Touch Device"
and then collect dmesg output:

sudo dmesg > dmesg.txt

and also please collect dmidecode output:

sudo dmidecode > dmidecode.txt

and then attach both files to you next email.

Regards,

Hans