Hi! I'm running Debian Sid on a laptop. I usually connect a external monitor to the HDMI output of the integrated graphic card (an Intel, if relevant). When I'm at home, it works fine, but it is not working at work since a week. When I start with the monitor connected, I can see the manufacturer splash screen, GRUB and the first messages at the start up on my external monitor, but after a few seconds, when the screen goes to black and the terminal changes to "graphical" mode, I lost my external monitor connection and only can use the laptop screen. At home, in the same point where I lost the external monitor at work, it began to see the startup messages mirrored at the two screens. I have look at /var/log/messages looking for some HDMI-related error messages, and the most likely I can found is this: [ 11.456642] HDMI status: Codec=3 Pin=4 Presence_Detect=0 ELD_Valid=0 Any idea to solve that? -- José Luis Segura Lucas
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