Three upgrades from the on-glass rounds on .173/.221:
- `ddc-open` timing: the handle-ACQUISITION cost per monitor is reported even
when it yields no physical handles — the poller's first contact with a
virtual display, exactly what the DDC-fail-fast driver work changes; the
old code silently skipped handle-less monitors, which on a streaming host
in exclusive topology is every monitor there is.
- Monitors are labeled by GDI device name (\\.\DISPLAYn) so a virtual
display and a panel are tellable apart in the correlation log.
- `extend` mode: one SDC_TOPOLOGY_EXTEND poke — re-activates every
attachable display, i.e. the exact 'non-managed display re-activated'
event the exclusive watchdog evicts. One shot, not a loop: trigger a
reassert round, observe the recovery.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The stall-immunity bench needs both stall classes on demand, without a standby
TV or a monitor-tool storm: `ddc` replays the Twinkle-Tray/PowerDisplay-class
DDC/CI traffic (VCP reads, optional capabilities-string requests) through the
win32k I2C path; `modeset` re-commits the current mode with CDS_RESET — the
Level-Two modeset entry that idles the whole adapter with nothing Win32-visible
changing. Every op prints an epoch-stamped took_ms line so host.log stall
reports correlate line-for-line, and the op duration itself measures the
driver's service time per disturbance.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehlerandClaude Fable 5