Hi, I found the following traces in my dmesg, so here I am: [133629.989645] thinkpad_acpi: unhandled HKEY event 0x6031 [133629.989648] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-devel@lists.sourceforge.net
So what I think happens: I've a lenovo thinkpad P1 with an Nvidia Quadro T1000. This is connected to a Lenovo USB-C docking station, which has 2 external monitors connected via displayport. (the laptop has thunderbolt 3 support) A week or 2 ago, I updated the firmware of the docking station to the latest version, and since then I've random disconnects of my monitors quite often (say about 5 times a day). I can't find any real errors, this is the only error that seems to happen. more in detail: * I'm running ubuntu 20.04, updated and with nvidia drivers. * Only 1 of the 2 external screens disconnects, the other keeps working. It's not always the same. * It actually not really disconnects, but the screen goes into standby mode. In nvidia-settings I still see the screen as active. But the only way to get it to work again, is by reconnecting the dock. * I've also had a couple of times where it goes into stand-by for a couple of seconds and then recovers automatically. * I have another Lenovo laptop (E590 with Radeon graphics). I don't experience any disconnects there. This laptop has no thunderbolt support. So what do you think, is this something that could be related? I'm more than happy to provide more logs/details if needed. Best regards, Tom
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