Slow, jerky mouse on android (i.mx6DL)

[jfsimon]

Hi,

We have a design based on i.mx6dl. I am running latest JB on it. My screen is HDMI.  Android comes up fine but the mouse is very slow with a choppy motion.

On that design, when I am using the same linux kernel on LTIB with X, the mouse runs perfectly. So I think my kernel is OK.

I am not sure where to look.  When under android,  "logcat" prints a _lot_ of these messages:

(E/FslHwcomposer( 2177): FBIO_WAITFORVSYNC error: Invalid argument).

I think that these error messages are worrysome. But I am not sure they are related to my mouse problem.

Any ideas,

Thanks

-jf simon

[moseeneview]

hey, simon.

have u fixed the ipu issue?

i  also get "E/FslHwcomposer( 2165): FBIO_WAITFORVSYNC error: Timer expired"

[maheshmahadeva1 · Accepted solution]

Are you using the latest JB BSP release that was provided by Freescale.

I am using a mouse and keyboard with an LVDS display and do not see the choppy behavior.

Best regards,

-Mahesh

[jfsimon]

Hi Mahesh

I was wrong. I re-checked and I was not using latest version. Once I did problem went away.

Sorry for confusion

-jfs

[YixingKong]

Mahadevan, could you please keep wworking with the customer?

Thanks,

Yixing

[jfsimon]

Hi Mahesh

Yes I am using the latest BSP.

I have a feeling the problem has to do with the new JB HW composer HAL. See Graphics | Android Developers

The HWcomposer makes a FBIO_WAITFORVSYNC ioctl the linux frame buffer and that doesn't work for some reason I am still unclear.

-jfs