The "Input not supported" error occurs on the active connection. But
what has changed recently to introduce this problem since booting on
older kernels does not exhibit it?
Paolo
On 12/4/21 05:54, Tom Horsley wrote:
On Sat, 4 Dec 2021 15:16:05 +0800
Ed Greshko wrote:
So, you have a common keyboard, and monitor? I've not used a KVM switch in a long time but they sometimes would cause
problems.
A lot of KVM switches don't pass through EDID info correcly (especially
for connections not currently active), there is a kernel option you
can add to the kernel boot line to point at a binary blob of EDID
info that will override whatever incorrect nonsense it is getting from
the KVM. Usually you just want to save the EDID from the real monitor
when it is properly connected, then point the kernel at that so it
will always know the right stuff.
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