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1b1ed1a
(Get the code!)
Hi!
Are you sure this is not a hardware issue?
The reason I believe it is a hardware issue is because I observed my system "drop monitors" on the docking station also under Windows 10 and even while in the UEFI. Lenovo replaced both the motherboard and the docking station (and I updated firmware for both multiple times), however the issue is still present.
You say that for you, the problem does not appear under Windows. However, note that (at least in my case) this is a sporadic issue, so it may show up every day or every week or only every one or two months. I know of absolutely no way to predict or even "provoke" this.
So are you really sure it is not present for Windows, i. e. have you run the system for MONTHS under Windows and are you sure that your monitors never went off, even for a second or two?
I just wanna say that it may be very hard to judge whether this bug is present or not, because it sometimes occurs VERY seldomly. Since I observed it under both Windows 10 and Ubuntu Linux 20.04 LTS and also while in UEFI, I'm pretty sure it is not (only) a software issue. However, I had both motherboard and docking station replaced and it still occurs, suggesting that it may actually be not just a faulty component, but an issue in the actual hardware design, in which case it might affect the entire notebook or even APU series.