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I have a 4K TV plugged in to my computer over HDMI as its only monitor. I'm using an NVIDIA GPU with the proprietary drivers. When it works it is epic, but unfortunately the setup sometimes does not work after waking up from suspend. The TV will complain about not having a connection to anything. I can usually blindly switch to a virtual terminal and then ctrl-alt-del to politely reboot and the connection starts working again.
Less frequently, the TV won't complain about a lack of a connection but will instead just display black. The virtual terminal reboot trick doesn't work when in this state, so I have to hit the reset button. I assume this is a separate issue.
I've had this problem for many months (of HDMI sometimes not working after suspend) but it only recently became a big deal because it's my only monitor. Has anyone else encountered this? Can anyone recommend some good logs to check out for an idea of what's going on?
I've been looking through journalctl -k and these seem to be the only relevant messages:
nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device SONY TV *02 (HDMI-0)
Earlier on in the logs I also see:
Mar 09 22:13:34 jolly-rogers kernel: NVRM: Your system is not currently configured to drive a VGA console
Mar 09 22:13:34 jolly-rogers kernel: NVRM: on the primary VGA device. The NVIDIA Linux graphics driver
Mar 09 22:13:34 jolly-rogers kernel: NVRM: requires the use of a text-mode VGA console. Use of other console
Mar 09 22:13:34 jolly-rogers kernel: NVRM: drivers including, but not limited to, vesafb, may result in
Mar 09 22:13:34 jolly-rogers kernel: NVRM: corruption and stability problems, and is not supported.
Mar 09 22:13:34 jolly-rogers kernel: nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 358.16 Mon Nov 16 18:58:09 PST 2015
Mar 09 22:13:34 jolly-rogers kernel: nvidia-modeset: Allocated GPU:0 (GPU-4cbdaf97-60ea-777b-5306-a1df233664ae) @ PCI:0000:01:00.0
So I guess I'll try adding "video=vesa:off vga=normal" to my kernel and hope it helps!
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Bah, this seems pretty similar. *shakes fist at nvidia* https://devtalk.nvidia.com/default/topi … tv-resta/2
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