PINEPHONE: Pulsing display

[nas00]

The screen constantly pulses below approx 60% brightness. Pulsing becomes more noticeable as brightness is reduced to minimum.

[dewitpj]

I think I saw this on an earlier version - I now have a "band of white" on my display - images to follow

[nas00]

I haven't seen whites bands - it's more like a flicker as if the refresh rate is wrong. Seen similar issue on early linux releases.

[rakor]

Here too. The screen is flickering and all hard contrasts have like vertical shadows. So a white box in the middle of the screen gives light lines to the top and the bottom of the screen.

[rsglobal]

This patch describes something similar: https://lore.kernel.org/patchwork/patch/1267690/

I still waiting for device, so I can't check now.

[nas00]

I've seen the bluetooth issue on debian - every input with bt device caused brightness to increase momentarily. The issue here is a faster flicker - I suppose could be related to the wifi so maybe flipping the relevant kill switches would confirm? Edit: I tried the various switches but no difference upon reboot.

[rsglobal]

I've reduced wifi voltage to 1.8: Can anybody check it https://drive.google.com/file/d/1MqHAg_g9Jm_5vI2RLtByuKy3_tncvkY7/view?usp=sharing ?

[dewitpj]

Downloading - will advise

On 15/07/2020, at 22:44, rsglobal notifications@github.com wrote:

I've reduced wifi voltage to 1.8: Can anybody check it https://drive.google.com/file/d/1MqHAg_g9Jm_5vI2RLtByuKy3_tncvkY7/view?usp=sharing https://drive.google.com/file/d/1MqHAg_g9Jm_5vI2RLtByuKy3_tncvkY7/view?usp=sharing ?

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[dewitpj]

I still have the white bars, no flicker as yet

[rsglobal]

@dewitpj , Can you attach a picture here of the bars?

[dewitpj]

Sorry, I did forget to do that:

It’s only when a white screen is present on a dark background

Thanks!

On 16/07/2020, at 07:13, rsglobal notifications@github.com wrote:

 @dewitpj , Can you attach a picture here of the bars?

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[dewitpj]

Seems email attachments don't work :(

[nas00]

I've reduced wifi voltage to 1.8: Can anybody check it

Screen still pulsing but your post reminded of this display voltage issue:

https://mobile.twitter.com/RealDanct12/status/1232456700868710400

[anibyl]

I'm experiencing the same issue.

The temporary "fix" I'm using: brightness ~50% + dark theme.

[nas00]

Are those white bars present in other OSes? They look a bit like LCD hardware issues reported by a few owners.

Seems email attachments don't work :(

[dewitpj]

Are those white bars present in other OSes? They look a bit like LCD hardware issues reported by a few owners.

Seems email attachments don't work :(

Nope, no lines on other OSs :(

[anibyl]

Nope, no lines on other OSs :(

Can confirm, these are the lines from bright elements on the screen, like icons and buttons.

[Exonip]

Nope, no lines on other OSs :(

Can confirm, these are the lines from bright elements on the screen, like icons and buttons.

Can confirm aswell. Any updates yet?

[rsglobal]

This and many other hardware issues solved by @megous in his kernel v5.8 integration branch. (https://github.com/megous/linux/tree/orange-pi-5.8) Currently we are integrating it into the GloDroid.

[rsglobal]

Please test if this issue is fixed: https://github.com/GloDroid/glodroid_manifest/issues/58#issuecomment-670354906