Touchscreen failure with CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND

Viresh Kumar viresh.kumar at linaro.org
Tue Apr 25 21:18:33 PDT 2017


On 25-04-17, 12:24, Fabio Estevam wrote:
> On Tue, Apr 25, 2017 at 11:35 AM, Adam Ford <aford173 at gmail.com> wrote:
> 
> > I have a touch screen (using tsc2004 touch controller) on my board.  I
> > can run some tests if you tell me how you're able to reproduce your
> > issue.  I can at least confirm whether or not I see it too.  I won't
> > be able to do it until later tonight or tomorrow however.
> 
> Just run:
> 
> evtest /dev/input/eventX to capture the touchscreen events and keep
> touching the screen.
> 
> After some random time (1-2 minutes) evtest will stop capturing the events.

And set the governor to Powersave to make sure we are running on
lowest OPP.

-- 
viresh



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