My issue is not framework specific. Guy with a Thinkpad gets the same exact issue, apparently caused by a zero-division in the driver: External monitor prevents logout/reboot / Kernel & Hardware / Arch Linux Forums
It was fixed 3 weeks ago in upstream. But it has not made it into the 6.8 and 6.9 kernels yet. I found that thread because my dmesg keeps spamming this message permanently when I’m running a game:
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[drm] Mode Validation Warning: Viewport size failed validation.
[drm] Mode Validation Warning: Viewport size failed validation.
[drm] Mode Validation Warning: Viewport size failed validation.
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