[OP 7T] Very weak vibrations / wrong durations

[natinusala]

On my OnePlus 7T (hotdogb), vibrations seem to only last for very little time, at the point where they are barely noticable when holding the phone.

I tried with one of my apps and the phone always vibrates the same way regardless to the value I give to the vibrate method... I went up to a 500ms vibration, no difference whatsoever

Any clue ? I am using stock vendor. Thanks !

[phhusson]

K, they probably have a "2d" vibrator which can also variate the intensity, not just duration. I guess they exposed it with custom HAL. Please give the list of those:

adb shell lshal

Le jeu. 19 déc. 2019 à 14:36, Nathan S. notifications@github.com a écrit :

On my OnePlus 7T (hotdogb), vibrations seem to only last for very little time, at the point where they are barely noticable when holding the phone.

I tried with one of my apps and the phone always vibrates the same way regardless to the value I give to the vibrate method... I went up to a 500ms vibration, no difference whatsoever

Any clue ? I am using stock vendor. Thanks !

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[natinusala]

Here it is : https://pastebin.com/5YAKzfiZ

[phhusson]

Hum nothings looks obvious.

Could be:

• vendor.oneplus.engnative.engineer@1.0::Engineer
• vendor.oneplus.hardware.brain@1.0::IOneplusBrain
• vendor.oneplus.hardware.param@1.0::IOneplusParam

I'm downloading OP7T firmware to reverse those and see if they seem related to vibrator.

Le jeu. 19 déc. 2019 à 16:37, Nathan S. notifications@github.com a écrit :

Here it is : https://pastebin.com/5YAKzfiZ

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[natinusala]

Cool thanks a lot !

[phhusson]

Okay, I found this in oneplus-services.jar:

private String mVibratorIntensityPath = "/sys/class/leds/vibrator/vmax_mv";
        if ("dumpling".equals(str) || "cheeseburger".equals(str)) {
            this.mVibratorIntensityPath = "/sys/class/timed_output/vibrator/vmax_mv";
        }

The values written to this file are 580, 1508, 1910 or 1726 depending on the vibration pattern. Let's start by trying all those values.

[natinusala]

Sadly none of the files above exist (using the stock kernel)