kernel display messages (drm.debug) were at 0, and are at 0x6 while the outputs are asked; the kernel log was at 19.701610 s
graphics cards before the PCI devices were listed: card0=active; after: card0=active (listing them wakes a card that sleeps, and a card that wakes looks at its sockets)
card0-HDMI-A-1: connected, enabled: not asked
drm.debug is back at 0
== kernel messages since then
[  105.416582] nvidia 0000:01:00.0: [drm:drm_mode_getconnector] User-space requested a forced probe on [CONNECTOR:84:DVI-D-1] but is not the DRM master, demoting to read-only probe
[  105.416595] nvidia 0000:01:00.0: [drm:drm_mode_getconnector] User-space requested a forced probe on [CONNECTOR:86:HDMI-A-1] but is not the DRM master, demoting to read-only probe
(the lines "... is not the DRM master, demoting to read-only probe" are modetest's, which this snapshot runs meanwhile for modetest-connectors.txt: it is not the DRM master, so the kernel answers it from what it has and asks no display again; the outputs above that were asked again were asked by this, as root, through their status file)
a TV or monitor is seen on a socket: the kernel's display messages are left as they are
