Problems with 4k screen #4167
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That's probably something to do with macos lying to us about the actual pixel density. |
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Thank you for the fast response. We also had the same problem with xpra on a 4k window surface machine. So it seems to be not macos specific. I will let the user test |
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Yes, that means rendering will be much slower - which is a shame because the fix is likely quite trivial. |
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As I said, we also had this on windows. Is there anything we can do to help you to workaround this issue? Couldnt we set the DPI manually somehow? :-) |
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MS Windows, I should be able to fix if I can reproduce it. |
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Maybe you've tried this, but I have something similar happen on my MBPro (Sonoma Xpra 5.0.7) with external monitor (not 4k though). It's sufficient to resize the window to get a redraw filling the window. |
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+1 on this issue, I'm experiencing this on macOS (Unfortunately I don't have windows machine to test this on) xpra v5.0.2 on the server 
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@totaam whats the best way to debug this issue? |
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I noticed that a similar issue was reported 5 years ago, #1933 |
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@ardavank I actually have done a lot of testing on MS Windows lately, with various GPUs, and I haven't seen this bug at all. I don't have the hardware required for testing or fixing MacOS. |
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I upgraded the client to use version 6 and in this version, I'm seeing a blank window: |
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totaam
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Thanks @ardavank
Perhaps this will work better (worth a try):
That is a problem. Looks like OpenGL 3.3 (mac) Error validating program: Validation Failed: No vertex array object bound Can you screenshot the blank window? What color is it? Transparent? |
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@totaam thanks for the tips I tried it again with |
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@totaam here is the screenshot when |
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@totaam using version |
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@totaam using version |
totaam
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as the window may be moved from one monitor to another
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@ardavank I believe that this is now fixed. Thank you for your patience. I found the "scaled" display setting here: Please try I'm seeing crashes when I click on the dock icon, but that's a different issue: #4042 |
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@totaam thanks, I just tried the here is the log: |
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the |
(not
Two weird things about this:
Yes - probably related to:
I've posted a |
No I'm running
I've tested the arm64 version and things are much more better, however, I feel like the experience is still better when opengl is disabled. |
Portion of the screen or window?
Do you have a screenshot? |
portions of the screen, imagine you are scrolling in an app but only a portion of screen moves and some of the areas are still showing the previous state |
If it's only when scrolling, make sure that your server is up to date as there was a bug with scrolling before ~5.0.7 IIRC. |
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BTW, the reason why this has changed recently is because we now target MacOS 12 or later, and wantsBestResolutionOpenGLSurface now defaults to true. |
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Thank you so much for xpra, its super nice! :-)
When I use xpra to attach on a 4k screen, we are ending up with a tiny image in a big red area:
I tried using --desktop-scaling=2, but that did not help at all. Any recommendations what to do?
Best,
Thorsten
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