A friend has a Beelink U59 computer running Window 11 Pro, fully updated including drivers. It is connected to a Hisense Fire TV model 43QD65NF running Fire OS 7.7.1.1 (latest), used only as a monitor, via HDMI. Resolution is set to 3840×2160 at 60 Hz. System is set to turn off screen after 10 minutes, not ever sleeping or hibernating.
When the screen turns off, the monitor displays “no signal” then powers off after a few minutes, as expected. But until the monitor turns off, the system plays (through speakers connected via the 3.5 mm jack) obnoxious beeps about every 20 seconds, apparently because the system sees the monitor as being repeatedly disconnected and reconnected. During this time, if the monitor is powered off manually, the beeping stops and all is well.
Trying the other HDMI output (this computer has two, though only one is being used) did not help, nor did trying another HDMI cable or a different HDMI input on the monitor. A Mac M1 Mini was previously connected to this monitor and caused no trouble.
Windows shows the driver for “Intel UHD Graphics” dated 5/31/2022; Windows Update finds nothing newer. The Beelink site shows only Win10 drivers for this machine; I didn’t try it.
Is there a setting or update that might correct this issue?
