Dear support, I am writing this from a laptop with a GTX1070 on driver 375.66. The internal panel is on eDP-1, while I have an external monitor connected on DP-1. $ grep . /sys/class/drm/*/status /sys/class/drm/card0-DP-1/status:connected /sys/class/drm/card0-DP-2/status:disconnected /sys/class/drm/card0-eDP-1/status:connected /sys/class/drm/card0-HDMI-A-1/status:disconnected Yet these connected monitors are reported as disabled by the nvidia driver: $ grep . /sys/class/drm/*/enabled /sys/class/drm/card0-DP-1/enabled:disabled /sys/class/drm/card0-DP-2/enabled:disabled /sys/class/drm/card0-eDP-1/enabled:disabled /sys/class/drm/card0-HDMI-A-1/enabled:disabled In fact these files always report “disabled”, no matter what monitors I connect/disconnect and what resolution I drive them at. This is not the case for nouveau (or intel on another laptop), where “enabled” or “disabled” are reported, reflecting the current monitor status. The nasty consequence of this is that systemd suspends the laptop when I close the lid, because it concludes that no external monitors are connected. nvidia-bug-report.log.gz (140 KB)

We just had a new release with the fix. https://www.nvidia.com/en-us/drivers/details/253003/

Does this also happen if you remove nvidia-drm.modeset=1 from kernel parameters?

Hi generix, I wonder why you ask. Without that kernel parameter there are no connector nodes in /sys/class/drm at all: $ ls -l /sys/class/drm/ total 0 lrwxrwxrwx 1 root root 0 Jun 29 11:06 card0 → …/…/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0 lrwxrwxrwx 1 root root 0 Jun 29 11:06 renderD128 → …/…/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/renderD128 -r–r–r-- 1 root root 4096 Jun 29 11:06 version Cheers, Wouter PS: this does not solve my systemd problem. It still reports: $ busctl get-property org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager Docked b false indicating that there are no external monitors connected. nvidia-bug-report.log.gz (140 KB)

FWIW, one of the systemd authors believes this is a driver bug: Laptop suspends because external monitor reports "disabled" in /sys/class/drm/*/enabled · Issue #6148 · systemd/systemd · GitHub

Most definitely, it reports wrong information to userspace. I can’t test this on my laptop since nvidia_drm.modeset=1 hard hangs the machine without traces.

Looking at the code, this should likely be fixed in 381.22.

Dear generix, At what code did you look? You are mistaken. Cheers, Wouter nvidia-bug-report.log.gz (135 KB)

Of course you will have to add nvidia-drm.modeset=1 back. I just wanted you to remove that to see which part of the nvidia-driver sets the connector state. So I looked at the glue code in nvidia-driver-381.22/kernel/nvidia-drm and it containes a helper function for setting the enabled state. I then looked at the 375.66 driver and it didn’t contain it. Edit: that it’s there doesn’t mean that it’s flawlessly working. Disconnecting/connecting the display or changing modes should set it if there’s not another bug. Please try and report back.

Not sure what more you want me to try? By “You are mistaken” I mean that I ran 381.22 with modeset=1 (through a modprobe.d conffile) and I still get $ grep . /sys/class/drm/*/enabled /sys/class/drm/card0-DP-1/enabled:disabled /sys/class/drm/card0-DP-2/enabled:disabled /sys/class/drm/card0-eDP-1/enabled:disabled /sys/class/drm/card0-HDMI-A-1/enabled:disabled as before.

Ok, sorry, missed that. To get a bit more information, you could add drm.debug=0x10 to kernel cmdline. This should turn on drm atomic modesetting debug messages. On changes (setting modes/connect/disconnect) a line “Set [MODE:] for CRTC state” should show up. Though by digging further into this, it seems like this function is only ever called on shutdown showing “Set [NOMODE] for CRTC state”. So not so very helpful helper function.

/sys/class/drm/*/enabled reports "disabled" for enabled monitors

Graphics / Linux Linux

mlau June 29, 2017, 10:10am 4

same here: gtx1080 HDMI output is connected to running TV:

/sys/class/drm # grep . */enabled
card0-DP-1/enabled:disabled
card0-DP-2/enabled:disabled
card0-DP-3/enabled:disabled
card0-HDMI-A-1/enabled:disabled

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/sys/class/drm/*/enabled reports "disabled" for enabled monitors

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