SABRE hannstar touch screen failure

[Swamy]

Hello,

I have a IMX53 SABRE with hannstar touchscreen but the Touch screen functionality is not working. The GNome comes up and goes to calibrate mode but now we are not able to perform calibration.Here input is not taken at all. Please suggest

Kernel version=2.6.35.3-998-ga1cd8a7

Regards,

Swamy

[XiaoboYang]

Hi Nagesh,

I also met the same issue, and www.imxdev.org is unreachable to me. Could you please attache the patch here. 

Regards,
Xiaobo

nagesha said:

Touch screen is working fine with 11.05 build images.

Applied a patch to egalax driver as given in the below link:

http://www.imxdev.org/wiki/index.php?title=I.MX53_Qt_LVDS_display

Thanks,

-Nagesh A

[PrabhuSundarara · Accepted solution]

Here is correct link I.MX53 Qt LVDS display

[nagesha71]

Touch screen is working fine with 11.05 build images.

Applied a patch to egalax driver as given in the below link:

http://www.imxdev.org/wiki/index.php?title=I.MX53_Qt_LVDS_display

Thanks,

-Nagesh A

[nagesha71]

Hi,

I tried with 11.05 build version, but not luck.

touch pad is not functioning.

The same thing added to a new discussion:

http://imxcommunity.org/group/i-mx53-sabre-tablet/forum/topics/touch-screen-is-not-functional-with-l...

Please give me suggestions and let me know if I need to provide any further inputs.

nagesha said:

Currently, I am using 11.03 version.  I will start building 11.05 today.

Beside, I didn't fine the file called /usr/etc/pointercal in the existing 11.03 version.

[nagesha71]

Currently, I am using 11.03 version.  I will start building 11.05 today.

Beside, I didn't fine the file called /usr/etc/pointercal in the existing 11.03 version.

[Swamy]

I started using 11.05 kernel.

Also we need to kill the process ts_calibrate to actually go to the screen.

The calibrated values are

 /usr/etc/pointercal
2053 18 -966512 16 1548 -942520 65536^@

[nagesha71]

Hi Swamy,

I am facing the exact problem with the board i.MX53 SABRE SMD.

Booted with linux with Kernel version=2.6.35.3-998-ga1cd8a7.

Touch screen is not functioning. 

Output of ts_print_raw command shows all 0's.

Did you get progress in this ?

Please suggest me on how to proceed on this.

[Swamy]

I tried evtest /dev/input/ts0 and recognizes the touch screen driver. I have attached the log for the any touch event also. 

But Touch screen doesn't function.

Also attached the log for ts_print_raw log.

[daiane_angolini]

Can you see any device like /dev/input/eventX?

Can you get any event on evtest?