Thanks. I don't see anything relevant in those logs.
Next please:
1. Tell us if logging into 'Ubuntu on Xorg' fixes the flicker.
2. Attach a video of the problem.
3. Try the workaround mentioned in bug 1958191.
4. Try a different HDMI cable if you can find one, in case it's just below spec for 1080p + 60Hz + whatever colour depth the kernel is using. Such problems may manifest in Linux but not in Windows due to signalling differences.
Thanks. I don't see anything relevant in those logs.
Next please:
1. Tell us if logging into 'Ubuntu on Xorg' fixes the flicker.
2. Attach a video of the problem.
3. Try the workaround mentioned in bug 1958191.
4. Try a different HDMI cable if you can find one, in case it's just below spec for 1080p + 60Hz + whatever colour depth the kernel is using. Such problems may manifest in Linux but not in Windows due to signalling differences.