Riddle me this - sometimes X on this laptop with a Radeon doesn't quite work (90% of the screen is a white block which does render a terminal but not a browser or background)

However, sometimes on a reboot, X comes up just fine and works 100% correctly.

No idea.

This is what it looks like from a screenshot point-of-view, although the black part is white when looking at it on the LCD itself.

Interestingly, even with a terminal window open that renders on the screen, the screenshot tool doesn't capture it, just black.

Here's it working properly after a couple of reboots with no changes.

Seems sporadic, but at least it "works" in a sense.


@ecliptik Well, first couple things I'd do in this situation would be to check Xorg logs and dmesg at time of the error. You'd be surprised how many issues I've solved just by skimming through the logs.

@Phate6660 I've done all of that, and there's not much there unfortunately.

It's something with the Radeon driver and 5.10 kernel. Was working fine when the laptop was running Debian Buster, but did an upgrade to Sid last night and it started acting wonky.

@nilix I tried both, did the same thing with each driver. I believe it's on amdgpu now since that appears to be the newer and more developed one.

@ecliptik That's really weird. How old is your card? It sounds like a hardware problem :(

@nilix It's a AMD Radeon HD 8870M in a MacBook Pro 2015.

I believe the laptop has an integrated Intel GPU as well, and might try figuring out how to disable the Radeon and use the Intel instead.

Laptop won't be used for any heavy 3D applications, mainly terminal and web - battery over performance is ideal.

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