Lock screen dithered and looks bad

[Snowflake6]

Describe the bug
When running xochitl under oxide, and the screensaver / lock screen loads suspended.png, the image first loads cleanly, then is immediately dithered to half-brightness or something, and looks blurry.

To Reproduce
Steps to reproduce the behavior:

1. From oxide launcher, start xochitl
2. While xochitl is running, press the power button on top of the RM1
3. Observe suspended.png loading cleanly (briefly)
4. Observe an immediate dithering of the clean image

Expected behavior
A clear presentation of the image in suspended.png when the screen is locked or times out.

Screenshots
Not sure how to take a screenshot of a lock screen.

Version Information:

• Device: reMarkable 1
• OS: 2.5.0.27-patch_17.1.03-0-gd8286ca
• Version: 2.0.1-beta-2

Additional context
I am using remarkable_news (https://github.com/Evidlo/remarkable_news) to dynamically change my suspended.png image. It is pulling images from picsum.photo with the following URL: https://picsum.photos/1404/1872.jpg?grayscale. This should bring in an image perfectly sized to the screen, and greyscaled.

Note: Prior to installing toltec and oxide, I was using remarkable_news and the images were coming in clean. I think this is something to do with oxide trying to "help" the screen lock action, perhaps?

[Eeems]

This is likely due to an issue that others have mentioned (but not opened an issue for yet) where the power button press is for some reason not actually being blocked by tarnish, and thus xochitl is also trying to handle the button press as well. This isn't a problem on the rM1 due to how it's properly blocking the button press if it's being handled.

@Witos could you include your findings (evtest etc) here?

@Snowflake6 also, for the screenshot, you can just take a photo of your tablet when the lockscreen is displayed.

[Snowflake6]

@Eeems Good point on the screenshots. It sounds like the issue may be understood, but for the sake of completeness, here are two.

Expected behavior: toltec/oxide not running:

Actual behavior: toltec/oxide running:

[Eeems]

Oh wait, this is on v2.0.1. I think I had the fix to greyscale image display in v2.1 (unreleased). #93

[Snowflake6]

@Eeems Gah. I did try to find an existing issue, too. This can probably be closed then as it seems to be a duplicate. I'll wait for 2.1 to come out.

[Eeems]

I'm going to be pushing v2.0.2 here in the next little bit due to a couple of PRs that are open. I'll sneak this in as well.