** Also affects: mir (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1551536
Title:
Fullscreen clients freeze when using NBS with multiple monitors
Status in Mir:
Fix Committed
Status in mir package in Ubuntu:
New
Bug description:
Fullscreen clients freeze when using NBS with multiple monitors
Test case:
1. mir_proving_server --display-config sidebyside --nbuffers=0 &
2. mir_demo_client_egltriangle -f &
3. Manually trigger switching to/from bypass mode using Alt+mousewheel to
adjust opacity.
Expected: Every time you restore full opacity, the triangle continues
spinning smoothly
Observed: The triangle freezes (permanently) when re-entering bypass mode.
This is a manual test case I've used a lot in the past. A freeze
indicates buffer starvation/deadlock -- we have not allocated enough
buffers to cope with combinations of multi-
monitor/bypass/framedropping simultaneously.
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