@amxmln @haeckerfelix HDMI seems to be more sensitive to interference. I have two external displays on a laptop, and only of of those gets blanked frequently. Larger display has longer cable, so that might be part of the reason why it's more sensitive to any issues. Maybe better cable quality might reduce part of the issues, as some of the thinner cables don't have that much insulation.
But seriously, the chair is likely to the blame, not the cables. Floor covering might also matter a bit, too?
@autiomaa @amxmln @haeckerfelix I have the same screen connected to two computers, one via DP one via hdmi. Sometimes it blanks out via hdmi (especially when i feel a small electricity discharge) but never DP
But it can also be cable quality