Hi Henry, On 17-Mar-25 5:40 PM, Henry Isaac wrote: > > Hello! > > I recent spoke to Hans after contacting the wrong email who kindly pointed me here. > > I am having issues with a tablet PC I brought where the touch device is not recognised. The tablet is a GeoPad 220 using a Goodix GXTP7386 touch pannel. > > Everything works except the touch screen, I have attached the dmesg.txt and acpidump.txt > > Also here are the command line prompts I was advised to run. > > [henry@Geopad220 ~]$ sudo dmesg > dmesg.txt > [sudo] password for henry: > [henry@Geopad220 ~]$ sudo acpidump -o acpidump.txt > [henry@Geopad220 ~]$ ls /sys/bus/i2c/devices > i2c-0 i2c-10 i2c-12 i2c-2 i2c-4 i2c-6 i2c-8 i2c-GXTP7386:00 > i2c-1 i2c-11 i2c-13 i2c-3 i2c-5 i2c-7 i2c-9 i2c-MXC6655:00 > [henry@Geopad220 ~]$ cat /sys/bus/i2c/devices/i2c-GXTP7386:00/modalias > acpi:GXTP7386:PNP0C50: > > If you need anymore info please reach out I am happy to help where I can in case others have this issue too! Ok, so this appears to be a i2c-hid touchscreen, but for some reason I'm not seeing any i2c-hid related messages in your dmesg. Please add the following to your kernel commandline: i2c_hid.dyndbg See the Arch documentation for how to add something to the kernel commandline. After this reboot with the new kernel commandline and do: cat /proc/cmdline and make sure that i2c_hid.dyndbg is there. Then do: sudo dmesg > dmesg.txt check dmesg.txt this should now contain some i2c_hid xxxx messages, if not then it looks like the driver is not loading for some reason. In this case try manually modprobing it: sudo modprobe i2c_hid_acpi and then run: sudo dmesg > dmesg.txt and see if some new i2c_hid messages have shown up now. Either way please attach the new dmesg.txt to your next email and then we'll see from there. Regards, Hans > > Many thanks > Henry
