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amatika

Member

Registered: 2016-03-17

Posts: 59

Display disconnects intermittenly

Display loses the signal just out of the blue intermittenly.
Unplugging the DP adapter and plugging it back in seems to bring it back alive.

Display: Acer XV272U KV
GPU: NVIDIA GeForce RTX 3060
GPU driver: nvidia 550.67-3

I see these related log entries

Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-6: disconnected
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-6: Internal DisplayPort
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-6: 2670.0 MHz maximum pixel clock
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0):
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-0: disconnected
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-0: Internal DisplayPort
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-0: 2670.0 MHz maximum pixel clock
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0):

...

Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0):
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-7: disconnected
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-7: Internal TMDS
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-7: 165.0 MHz maximum pixel clock
Mar 31 17:01:26 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0):
Mar 31 17:01:57 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): Acer XV272U KV (DFP-3): connected
Mar 31 17:01:57 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): Acer XV272U KV (DFP-3): Internal DisplayPort
Mar 31 17:01:57 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): Acer XV272U KV (DFP-3): 2670.0 MHz maximum pixel clock
Mar 31 17:01:57 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0):
Mar 31 17:01:58 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-0: disconnected
Mar 31 17:01:58 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-0: Internal DisplayPort
Mar 31 17:01:58 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-0: 2670.0 MHz maximum pixel clock
Mar 31 17:01:58 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0):
Mar 31 17:01:58 amatika /usr/lib/gdm-x-session[1391]: (--) NVIDIA(GPU-0): DFP-1: disconnected

seth

Member

Registered: 2012-09-03

Posts: 51,617

Re: Display disconnects intermittenly

Related to what?
The snippet shows DFP-{0,1,6,7} only being disconnected and DFP-3 only being connected.
It provides no useful information on the situation at all.

Do you have a replacement cable?

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